loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
/* Rtl-level induction variable analysis.
|
|
|
|
Copyright (C) 2004 Free Software Foundation, Inc.
|
|
|
|
|
|
|
|
This file is part of GCC.
|
|
|
|
|
|
|
|
GCC is free software; you can redistribute it and/or modify it
|
|
|
|
under the terms of the GNU General Public License as published by the
|
|
|
|
Free Software Foundation; either version 2, or (at your option) any
|
|
|
|
later version.
|
|
|
|
|
|
|
|
GCC is distributed in the hope that it will be useful, but WITHOUT
|
|
|
|
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
|
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
|
|
for more details.
|
|
|
|
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
|
|
along with GCC; see the file COPYING. If not, write to the Free
|
|
|
|
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
|
|
|
|
02111-1307, USA. */
|
|
|
|
|
|
|
|
/* This is just a very simplistic analysis of induction variables of the loop.
|
|
|
|
The major use is for determining the number of iterations of a loop for
|
|
|
|
loop unrolling, doloop optimization and branch prediction. For this we
|
|
|
|
are only interested in bivs and a fairly limited set of givs that are
|
|
|
|
needed in the exit condition. We also only compute the iv information on
|
|
|
|
demand.
|
|
|
|
|
|
|
|
The interesting registers are determined. A register is interesting if
|
|
|
|
|
|
|
|
-- it is set only in the blocks that dominate the latch of the current loop
|
|
|
|
-- all its sets are simple -- i.e. in the form we understand
|
|
|
|
|
|
|
|
We also number the insns sequentially in each basic block. For a use of the
|
|
|
|
interesting reg, it is now easy to find a reaching definition (there may be
|
|
|
|
only one).
|
|
|
|
|
c-decl.c, [...]: Fix comment typos and formatting.
* c-decl.c, c-ppoutput.c, combine.c, cppfiles.c, dwarf2out.c,
expr.c, fold-const.c, gcc.c, haifa-sched.c, loop-iv.c,
params.def, read-rtl.c, rtl.c, rtlanal.c, toplev.c: Fix
comment typos and formatting. Follow spelling conventions.
From-SVN: r78555
2004-02-27 08:09:43 +01:00
|
|
|
Induction variable is then simply analyzed by walking the use-def
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
chains.
|
|
|
|
|
|
|
|
Usage:
|
|
|
|
|
|
|
|
iv_analysis_loop_init (loop);
|
|
|
|
insn = iv_get_reaching_def (where, reg);
|
2004-02-24 04:43:59 +01:00
|
|
|
if (iv_analyze (insn, reg, &iv))
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
|
|
|
...
|
|
|
|
}
|
|
|
|
iv_analysis_done (); */
|
|
|
|
|
|
|
|
#include "config.h"
|
|
|
|
#include "system.h"
|
|
|
|
#include "coretypes.h"
|
|
|
|
#include "tm.h"
|
|
|
|
#include "rtl.h"
|
|
|
|
#include "hard-reg-set.h"
|
|
|
|
#include "basic-block.h"
|
|
|
|
#include "cfgloop.h"
|
|
|
|
#include "expr.h"
|
|
|
|
#include "output.h"
|
|
|
|
|
|
|
|
/* The insn information. */
|
|
|
|
|
|
|
|
struct insn_info
|
|
|
|
{
|
|
|
|
/* Id of the insn. */
|
|
|
|
unsigned luid;
|
|
|
|
|
|
|
|
/* The previous definition of the register defined by the single
|
|
|
|
set in the insn. */
|
|
|
|
rtx prev_def;
|
|
|
|
|
|
|
|
/* The description of the iv. */
|
|
|
|
struct rtx_iv iv;
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct insn_info *insn_info;
|
|
|
|
|
|
|
|
/* The last definition of register. */
|
|
|
|
|
|
|
|
static rtx *last_def;
|
|
|
|
|
|
|
|
/* The bivs. */
|
|
|
|
|
|
|
|
static struct rtx_iv *bivs;
|
|
|
|
|
|
|
|
/* Maximal insn number for that there is place in insn_info array. */
|
|
|
|
|
|
|
|
static unsigned max_insn_no;
|
|
|
|
|
|
|
|
/* Maximal register number for that there is place in bivs and last_def
|
|
|
|
arrays. */
|
|
|
|
|
|
|
|
static unsigned max_reg_no;
|
|
|
|
|
|
|
|
/* Dumps information about IV to FILE. */
|
|
|
|
|
|
|
|
extern void dump_iv_info (FILE *, struct rtx_iv *);
|
|
|
|
void
|
|
|
|
dump_iv_info (FILE *file, struct rtx_iv *iv)
|
|
|
|
{
|
|
|
|
if (!iv->base)
|
|
|
|
{
|
|
|
|
fprintf (file, "not simple");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2004-08-06 11:40:39 +02:00
|
|
|
if (iv->step == const0_rtx
|
|
|
|
&& !iv->first_special)
|
|
|
|
fprintf (file, "invariant ");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
print_rtl (file, iv->base);
|
2004-08-06 11:40:39 +02:00
|
|
|
if (iv->step != const0_rtx)
|
|
|
|
{
|
|
|
|
fprintf (file, " + ");
|
|
|
|
print_rtl (file, iv->step);
|
|
|
|
fprintf (file, " * iteration");
|
|
|
|
}
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
fprintf (file, " (in %s)", GET_MODE_NAME (iv->mode));
|
|
|
|
|
|
|
|
if (iv->mode != iv->extend_mode)
|
|
|
|
fprintf (file, " %s to %s",
|
|
|
|
rtx_name[iv->extend],
|
|
|
|
GET_MODE_NAME (iv->extend_mode));
|
|
|
|
|
|
|
|
if (iv->mult != const1_rtx)
|
|
|
|
{
|
|
|
|
fprintf (file, " * ");
|
|
|
|
print_rtl (file, iv->mult);
|
|
|
|
}
|
|
|
|
if (iv->delta != const0_rtx)
|
|
|
|
{
|
|
|
|
fprintf (file, " + ");
|
|
|
|
print_rtl (file, iv->delta);
|
|
|
|
}
|
|
|
|
if (iv->first_special)
|
|
|
|
fprintf (file, " (first special)");
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Assigns luids to insns in basic block BB. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
assign_luids (basic_block bb)
|
|
|
|
{
|
|
|
|
unsigned i = 0, uid;
|
|
|
|
rtx insn;
|
|
|
|
|
|
|
|
FOR_BB_INSNS (bb, insn)
|
|
|
|
{
|
|
|
|
uid = INSN_UID (insn);
|
|
|
|
insn_info[uid].luid = i++;
|
|
|
|
insn_info[uid].prev_def = NULL_RTX;
|
|
|
|
insn_info[uid].iv.analysed = false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Generates a subreg to get the least significant part of EXPR (in mode
|
|
|
|
INNER_MODE) to OUTER_MODE. */
|
|
|
|
|
|
|
|
static rtx
|
|
|
|
lowpart_subreg (enum machine_mode outer_mode, rtx expr,
|
|
|
|
enum machine_mode inner_mode)
|
|
|
|
{
|
|
|
|
return simplify_gen_subreg (outer_mode, expr, inner_mode,
|
|
|
|
subreg_lowpart_offset (outer_mode, inner_mode));
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Checks whether REG is a well-behaved register. */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
simple_reg_p (rtx reg)
|
|
|
|
{
|
|
|
|
unsigned r;
|
|
|
|
|
|
|
|
if (GET_CODE (reg) == SUBREG)
|
|
|
|
{
|
|
|
|
if (!subreg_lowpart_p (reg))
|
|
|
|
return false;
|
|
|
|
reg = SUBREG_REG (reg);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!REG_P (reg))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
r = REGNO (reg);
|
|
|
|
if (HARD_REGISTER_NUM_P (r))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (GET_MODE_CLASS (GET_MODE (reg)) != MODE_INT)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (last_def[r] == const0_rtx)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Checks whether assignment LHS = RHS is simple enough for us to process. */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
simple_set_p (rtx lhs, rtx rhs)
|
|
|
|
{
|
|
|
|
rtx op0, op1;
|
|
|
|
|
|
|
|
if (!REG_P (lhs)
|
|
|
|
|| !simple_reg_p (lhs))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (CONSTANT_P (rhs))
|
|
|
|
return true;
|
|
|
|
|
|
|
|
switch (GET_CODE (rhs))
|
|
|
|
{
|
|
|
|
case SUBREG:
|
|
|
|
case REG:
|
|
|
|
return simple_reg_p (rhs);
|
|
|
|
|
|
|
|
case SIGN_EXTEND:
|
|
|
|
case ZERO_EXTEND:
|
|
|
|
case NEG:
|
|
|
|
return simple_reg_p (XEXP (rhs, 0));
|
|
|
|
|
|
|
|
case PLUS:
|
|
|
|
case MINUS:
|
|
|
|
case MULT:
|
2004-06-24 18:50:35 +02:00
|
|
|
case ASHIFT:
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
op0 = XEXP (rhs, 0);
|
|
|
|
op1 = XEXP (rhs, 1);
|
|
|
|
|
|
|
|
if (!simple_reg_p (op0)
|
|
|
|
&& !CONSTANT_P (op0))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (!simple_reg_p (op1)
|
|
|
|
&& !CONSTANT_P (op1))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (GET_CODE (rhs) == MULT
|
|
|
|
&& !CONSTANT_P (op0)
|
|
|
|
&& !CONSTANT_P (op1))
|
|
|
|
return false;
|
|
|
|
|
2004-06-24 18:50:35 +02:00
|
|
|
if (GET_CODE (rhs) == ASHIFT
|
|
|
|
&& CONSTANT_P (op0))
|
|
|
|
return false;
|
|
|
|
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
return true;
|
|
|
|
|
|
|
|
default:
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Mark single SET in INSN. */
|
|
|
|
|
|
|
|
static rtx
|
|
|
|
mark_single_set (rtx insn, rtx set)
|
|
|
|
{
|
|
|
|
rtx def = SET_DEST (set), src;
|
|
|
|
unsigned regno, uid;
|
|
|
|
|
|
|
|
src = find_reg_equal_equiv_note (insn);
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
if (src)
|
|
|
|
src = XEXP (src, 0);
|
|
|
|
else
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
src = SET_SRC (set);
|
|
|
|
|
|
|
|
if (!simple_set_p (SET_DEST (set), src))
|
|
|
|
return NULL_RTX;
|
|
|
|
|
|
|
|
regno = REGNO (def);
|
|
|
|
uid = INSN_UID (insn);
|
|
|
|
|
|
|
|
bivs[regno].analysed = false;
|
|
|
|
insn_info[uid].prev_def = last_def[regno];
|
|
|
|
last_def[regno] = insn;
|
|
|
|
|
|
|
|
return def;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Invalidate register REG unless it is equal to EXCEPT. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
kill_sets (rtx reg, rtx by ATTRIBUTE_UNUSED, void *except)
|
|
|
|
{
|
|
|
|
if (GET_CODE (reg) == SUBREG)
|
|
|
|
reg = SUBREG_REG (reg);
|
|
|
|
if (!REG_P (reg))
|
|
|
|
return;
|
|
|
|
if (reg == except)
|
|
|
|
return;
|
|
|
|
|
|
|
|
last_def[REGNO (reg)] = const0_rtx;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Marks sets in basic block BB. If DOM is true, BB dominates the loop
|
|
|
|
latch. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
mark_sets (basic_block bb, bool dom)
|
|
|
|
{
|
|
|
|
rtx insn, set, def;
|
|
|
|
|
|
|
|
FOR_BB_INSNS (bb, insn)
|
|
|
|
{
|
|
|
|
if (!INSN_P (insn))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (dom
|
|
|
|
&& (set = single_set (insn)))
|
|
|
|
def = mark_single_set (insn, set);
|
|
|
|
else
|
|
|
|
def = NULL_RTX;
|
|
|
|
|
|
|
|
note_stores (PATTERN (insn), kill_sets, def);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Prepare the data for an induction variable analysis of a LOOP. */
|
|
|
|
|
|
|
|
void
|
|
|
|
iv_analysis_loop_init (struct loop *loop)
|
|
|
|
{
|
|
|
|
basic_block *body = get_loop_body_in_dom_order (loop);
|
|
|
|
unsigned b;
|
|
|
|
|
|
|
|
if ((unsigned) get_max_uid () >= max_insn_no)
|
|
|
|
{
|
|
|
|
/* Add some reserve for insns and registers produced in optimizations. */
|
|
|
|
max_insn_no = get_max_uid () + 100;
|
|
|
|
if (insn_info)
|
|
|
|
free (insn_info);
|
|
|
|
insn_info = xmalloc (max_insn_no * sizeof (struct insn_info));
|
|
|
|
}
|
|
|
|
|
|
|
|
if ((unsigned) max_reg_num () >= max_reg_no)
|
|
|
|
{
|
|
|
|
max_reg_no = max_reg_num () + 100;
|
|
|
|
if (last_def)
|
|
|
|
free (last_def);
|
|
|
|
last_def = xmalloc (max_reg_no * sizeof (rtx));
|
|
|
|
if (bivs)
|
|
|
|
free (bivs);
|
|
|
|
bivs = xmalloc (max_reg_no * sizeof (struct rtx_iv));
|
|
|
|
}
|
|
|
|
|
|
|
|
memset (last_def, 0, max_reg_num () * sizeof (rtx));
|
|
|
|
|
|
|
|
for (b = 0; b < loop->num_nodes; b++)
|
|
|
|
{
|
|
|
|
assign_luids (body[b]);
|
|
|
|
mark_sets (body[b], just_once_each_iteration_p (loop, body[b]));
|
|
|
|
}
|
|
|
|
|
|
|
|
free (body);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Gets definition of REG reaching the INSN. If REG is not simple, const0_rtx
|
|
|
|
is returned. If INSN is before the first def in the loop, NULL_RTX is
|
|
|
|
returned. */
|
|
|
|
|
|
|
|
rtx
|
|
|
|
iv_get_reaching_def (rtx insn, rtx reg)
|
|
|
|
{
|
|
|
|
unsigned regno, luid, auid;
|
|
|
|
rtx ainsn;
|
|
|
|
basic_block bb, abb;
|
|
|
|
|
|
|
|
if (GET_CODE (reg) == SUBREG)
|
|
|
|
{
|
|
|
|
if (!subreg_lowpart_p (reg))
|
|
|
|
return const0_rtx;
|
|
|
|
reg = SUBREG_REG (reg);
|
|
|
|
}
|
|
|
|
if (!REG_P (reg))
|
|
|
|
return NULL_RTX;
|
|
|
|
|
|
|
|
regno = REGNO (reg);
|
|
|
|
if (!last_def[regno]
|
|
|
|
|| last_def[regno] == const0_rtx)
|
|
|
|
return last_def[regno];
|
|
|
|
|
|
|
|
bb = BLOCK_FOR_INSN (insn);
|
|
|
|
luid = insn_info[INSN_UID (insn)].luid;
|
|
|
|
|
|
|
|
ainsn = last_def[regno];
|
|
|
|
while (1)
|
|
|
|
{
|
|
|
|
abb = BLOCK_FOR_INSN (ainsn);
|
|
|
|
|
|
|
|
if (dominated_by_p (CDI_DOMINATORS, bb, abb))
|
|
|
|
break;
|
|
|
|
|
|
|
|
auid = INSN_UID (ainsn);
|
|
|
|
ainsn = insn_info[auid].prev_def;
|
|
|
|
|
|
|
|
if (!ainsn)
|
|
|
|
return NULL_RTX;
|
|
|
|
}
|
|
|
|
|
|
|
|
while (1)
|
|
|
|
{
|
|
|
|
abb = BLOCK_FOR_INSN (ainsn);
|
|
|
|
if (abb != bb)
|
|
|
|
return ainsn;
|
|
|
|
|
|
|
|
auid = INSN_UID (ainsn);
|
|
|
|
if (luid > insn_info[auid].luid)
|
|
|
|
return ainsn;
|
|
|
|
|
|
|
|
ainsn = insn_info[auid].prev_def;
|
|
|
|
if (!ainsn)
|
|
|
|
return NULL_RTX;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Sets IV to invariant CST in MODE. Always returns true (just for
|
|
|
|
consistency with other iv manipulation functions that may fail). */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
iv_constant (struct rtx_iv *iv, rtx cst, enum machine_mode mode)
|
|
|
|
{
|
|
|
|
if (mode == VOIDmode)
|
|
|
|
mode = GET_MODE (cst);
|
|
|
|
|
|
|
|
iv->analysed = true;
|
|
|
|
iv->mode = mode;
|
|
|
|
iv->base = cst;
|
|
|
|
iv->step = const0_rtx;
|
|
|
|
iv->first_special = false;
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
iv->extend = UNKNOWN;
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
iv->extend_mode = iv->mode;
|
|
|
|
iv->delta = const0_rtx;
|
|
|
|
iv->mult = const1_rtx;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Evaluates application of subreg to MODE on IV. */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
iv_subreg (struct rtx_iv *iv, enum machine_mode mode)
|
|
|
|
{
|
2004-08-06 11:40:39 +02:00
|
|
|
/* If iv is invariant, just calculate the new value. */
|
|
|
|
if (iv->step == const0_rtx
|
|
|
|
&& !iv->first_special)
|
|
|
|
{
|
|
|
|
rtx val = get_iv_value (iv, const0_rtx);
|
|
|
|
val = lowpart_subreg (mode, val, iv->extend_mode);
|
|
|
|
|
|
|
|
iv->base = val;
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
iv->extend = UNKNOWN;
|
2004-08-06 11:40:39 +02:00
|
|
|
iv->mode = iv->extend_mode = mode;
|
|
|
|
iv->delta = const0_rtx;
|
|
|
|
iv->mult = const1_rtx;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
if (iv->extend_mode == mode)
|
|
|
|
return true;
|
|
|
|
|
|
|
|
if (GET_MODE_BITSIZE (mode) > GET_MODE_BITSIZE (iv->mode))
|
|
|
|
return false;
|
|
|
|
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
iv->extend = UNKNOWN;
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
iv->mode = mode;
|
|
|
|
|
|
|
|
iv->base = simplify_gen_binary (PLUS, iv->extend_mode, iv->delta,
|
|
|
|
simplify_gen_binary (MULT, iv->extend_mode,
|
|
|
|
iv->base, iv->mult));
|
|
|
|
iv->step = simplify_gen_binary (MULT, iv->extend_mode, iv->step, iv->mult);
|
|
|
|
iv->mult = const1_rtx;
|
|
|
|
iv->delta = const0_rtx;
|
|
|
|
iv->first_special = false;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Evaluates application of EXTEND to MODE on IV. */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
iv_extend (struct rtx_iv *iv, enum rtx_code extend, enum machine_mode mode)
|
|
|
|
{
|
2004-08-06 11:40:39 +02:00
|
|
|
/* If iv is invariant, just calculate the new value. */
|
|
|
|
if (iv->step == const0_rtx
|
|
|
|
&& !iv->first_special)
|
|
|
|
{
|
|
|
|
rtx val = get_iv_value (iv, const0_rtx);
|
|
|
|
val = simplify_gen_unary (extend, mode, val, iv->extend_mode);
|
|
|
|
|
|
|
|
iv->base = val;
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
iv->extend = UNKNOWN;
|
2004-08-06 11:40:39 +02:00
|
|
|
iv->mode = iv->extend_mode = mode;
|
|
|
|
iv->delta = const0_rtx;
|
|
|
|
iv->mult = const1_rtx;
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
if (mode != iv->extend_mode)
|
|
|
|
return false;
|
|
|
|
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
if (iv->extend != UNKNOWN
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
&& iv->extend != extend)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
iv->extend = extend;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Evaluates negation of IV. */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
iv_neg (struct rtx_iv *iv)
|
|
|
|
{
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
if (iv->extend == UNKNOWN)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
|
|
|
iv->base = simplify_gen_unary (NEG, iv->extend_mode,
|
|
|
|
iv->base, iv->extend_mode);
|
|
|
|
iv->step = simplify_gen_unary (NEG, iv->extend_mode,
|
|
|
|
iv->step, iv->extend_mode);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
iv->delta = simplify_gen_unary (NEG, iv->extend_mode,
|
|
|
|
iv->delta, iv->extend_mode);
|
|
|
|
iv->mult = simplify_gen_unary (NEG, iv->extend_mode,
|
|
|
|
iv->mult, iv->extend_mode);
|
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Evaluates addition or subtraction (according to OP) of IV1 to IV0. */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
iv_add (struct rtx_iv *iv0, struct rtx_iv *iv1, enum rtx_code op)
|
|
|
|
{
|
|
|
|
enum machine_mode mode;
|
|
|
|
rtx arg;
|
|
|
|
|
c-decl.c, [...]: Fix comment typos and formatting.
* c-decl.c, c-ppoutput.c, combine.c, cppfiles.c, dwarf2out.c,
expr.c, fold-const.c, gcc.c, haifa-sched.c, loop-iv.c,
params.def, read-rtl.c, rtl.c, rtlanal.c, toplev.c: Fix
comment typos and formatting. Follow spelling conventions.
From-SVN: r78555
2004-02-27 08:09:43 +01:00
|
|
|
/* Extend the constant to extend_mode of the other operand if necessary. */
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
if (iv0->extend == UNKNOWN
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
&& iv0->mode == iv0->extend_mode
|
|
|
|
&& iv0->step == const0_rtx
|
|
|
|
&& GET_MODE_SIZE (iv0->extend_mode) < GET_MODE_SIZE (iv1->extend_mode))
|
|
|
|
{
|
|
|
|
iv0->extend_mode = iv1->extend_mode;
|
|
|
|
iv0->base = simplify_gen_unary (ZERO_EXTEND, iv0->extend_mode,
|
|
|
|
iv0->base, iv0->mode);
|
|
|
|
}
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
if (iv1->extend == UNKNOWN
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
&& iv1->mode == iv1->extend_mode
|
|
|
|
&& iv1->step == const0_rtx
|
|
|
|
&& GET_MODE_SIZE (iv1->extend_mode) < GET_MODE_SIZE (iv0->extend_mode))
|
|
|
|
{
|
|
|
|
iv1->extend_mode = iv0->extend_mode;
|
|
|
|
iv1->base = simplify_gen_unary (ZERO_EXTEND, iv1->extend_mode,
|
|
|
|
iv1->base, iv1->mode);
|
|
|
|
}
|
|
|
|
|
|
|
|
mode = iv0->extend_mode;
|
|
|
|
if (mode != iv1->extend_mode)
|
|
|
|
return false;
|
|
|
|
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
if (iv0->extend == UNKNOWN && iv1->extend == UNKNOWN)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
|
|
|
if (iv0->mode != iv1->mode)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
iv0->base = simplify_gen_binary (op, mode, iv0->base, iv1->base);
|
|
|
|
iv0->step = simplify_gen_binary (op, mode, iv0->step, iv1->step);
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Handle addition of constant. */
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
if (iv1->extend == UNKNOWN
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
&& iv1->mode == mode
|
|
|
|
&& iv1->step == const0_rtx)
|
|
|
|
{
|
|
|
|
iv0->delta = simplify_gen_binary (op, mode, iv0->delta, iv1->base);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
if (iv0->extend == UNKNOWN
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
&& iv0->mode == mode
|
|
|
|
&& iv0->step == const0_rtx)
|
|
|
|
{
|
|
|
|
arg = iv0->base;
|
|
|
|
*iv0 = *iv1;
|
|
|
|
if (op == MINUS
|
|
|
|
&& !iv_neg (iv0))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
iv0->delta = simplify_gen_binary (PLUS, mode, iv0->delta, arg);
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Evaluates multiplication of IV by constant CST. */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
iv_mult (struct rtx_iv *iv, rtx mby)
|
|
|
|
{
|
|
|
|
enum machine_mode mode = iv->extend_mode;
|
|
|
|
|
|
|
|
if (GET_MODE (mby) != VOIDmode
|
|
|
|
&& GET_MODE (mby) != mode)
|
|
|
|
return false;
|
|
|
|
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
if (iv->extend == UNKNOWN)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
|
|
|
iv->base = simplify_gen_binary (MULT, mode, iv->base, mby);
|
|
|
|
iv->step = simplify_gen_binary (MULT, mode, iv->step, mby);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
iv->delta = simplify_gen_binary (MULT, mode, iv->delta, mby);
|
|
|
|
iv->mult = simplify_gen_binary (MULT, mode, iv->mult, mby);
|
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
2004-06-24 18:50:35 +02:00
|
|
|
/* Evaluates shift of IV by constant CST. */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
iv_shift (struct rtx_iv *iv, rtx mby)
|
|
|
|
{
|
|
|
|
enum machine_mode mode = iv->extend_mode;
|
|
|
|
|
|
|
|
if (GET_MODE (mby) != VOIDmode
|
|
|
|
&& GET_MODE (mby) != mode)
|
|
|
|
return false;
|
|
|
|
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
if (iv->extend == UNKNOWN)
|
2004-06-24 18:50:35 +02:00
|
|
|
{
|
|
|
|
iv->base = simplify_gen_binary (ASHIFT, mode, iv->base, mby);
|
|
|
|
iv->step = simplify_gen_binary (ASHIFT, mode, iv->step, mby);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
iv->delta = simplify_gen_binary (ASHIFT, mode, iv->delta, mby);
|
|
|
|
iv->mult = simplify_gen_binary (ASHIFT, mode, iv->mult, mby);
|
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
/* The recursive part of get_biv_step. Gets the value of the single value
|
|
|
|
defined in INSN wrto initial value of REG inside loop, in shape described
|
|
|
|
at get_biv_step. */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
get_biv_step_1 (rtx insn, rtx reg,
|
|
|
|
rtx *inner_step, enum machine_mode *inner_mode,
|
|
|
|
enum rtx_code *extend, enum machine_mode outer_mode,
|
|
|
|
rtx *outer_step)
|
|
|
|
{
|
|
|
|
rtx set, lhs, rhs, op0 = NULL_RTX, op1 = NULL_RTX;
|
|
|
|
rtx next, nextr, def_insn, tmp;
|
|
|
|
enum rtx_code code;
|
|
|
|
|
|
|
|
set = single_set (insn);
|
|
|
|
rhs = find_reg_equal_equiv_note (insn);
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
if (rhs)
|
|
|
|
rhs = XEXP (rhs, 0);
|
|
|
|
else
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
rhs = SET_SRC (set);
|
|
|
|
lhs = SET_DEST (set);
|
|
|
|
|
|
|
|
code = GET_CODE (rhs);
|
|
|
|
switch (code)
|
|
|
|
{
|
|
|
|
case SUBREG:
|
|
|
|
case REG:
|
|
|
|
next = rhs;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case PLUS:
|
|
|
|
case MINUS:
|
|
|
|
op0 = XEXP (rhs, 0);
|
|
|
|
op1 = XEXP (rhs, 1);
|
|
|
|
|
|
|
|
if (code == PLUS && CONSTANT_P (op0))
|
|
|
|
{
|
|
|
|
tmp = op0; op0 = op1; op1 = tmp;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!simple_reg_p (op0)
|
|
|
|
|| !CONSTANT_P (op1))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (GET_MODE (rhs) != outer_mode)
|
|
|
|
{
|
|
|
|
/* ppc64 uses expressions like
|
|
|
|
|
|
|
|
(set x:SI (plus:SI (subreg:SI y:DI) 1)).
|
|
|
|
|
|
|
|
this is equivalent to
|
|
|
|
|
|
|
|
(set x':DI (plus:DI y:DI 1))
|
|
|
|
(set x:SI (subreg:SI (x':DI)). */
|
|
|
|
if (GET_CODE (op0) != SUBREG)
|
|
|
|
return false;
|
|
|
|
if (GET_MODE (SUBREG_REG (op0)) != outer_mode)
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
next = op0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SIGN_EXTEND:
|
|
|
|
case ZERO_EXTEND:
|
|
|
|
if (GET_MODE (rhs) != outer_mode)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
op0 = XEXP (rhs, 0);
|
|
|
|
if (!simple_reg_p (op0))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
next = op0;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (GET_CODE (next) == SUBREG)
|
|
|
|
{
|
|
|
|
if (!subreg_lowpart_p (next))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
nextr = SUBREG_REG (next);
|
|
|
|
if (GET_MODE (nextr) != outer_mode)
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
nextr = next;
|
|
|
|
|
|
|
|
def_insn = iv_get_reaching_def (insn, nextr);
|
|
|
|
if (def_insn == const0_rtx)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (!def_insn)
|
|
|
|
{
|
|
|
|
if (!rtx_equal_p (nextr, reg))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
*inner_step = const0_rtx;
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
*extend = UNKNOWN;
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
*inner_mode = outer_mode;
|
|
|
|
*outer_step = const0_rtx;
|
|
|
|
}
|
|
|
|
else if (!get_biv_step_1 (def_insn, reg,
|
|
|
|
inner_step, inner_mode, extend, outer_mode,
|
|
|
|
outer_step))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (GET_CODE (next) == SUBREG)
|
|
|
|
{
|
|
|
|
enum machine_mode amode = GET_MODE (next);
|
|
|
|
|
|
|
|
if (GET_MODE_SIZE (amode) > GET_MODE_SIZE (*inner_mode))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
*inner_mode = amode;
|
|
|
|
*inner_step = simplify_gen_binary (PLUS, outer_mode,
|
|
|
|
*inner_step, *outer_step);
|
|
|
|
*outer_step = const0_rtx;
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
*extend = UNKNOWN;
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
switch (code)
|
|
|
|
{
|
|
|
|
case REG:
|
|
|
|
case SUBREG:
|
|
|
|
break;
|
|
|
|
|
|
|
|
case PLUS:
|
|
|
|
case MINUS:
|
|
|
|
if (*inner_mode == outer_mode
|
|
|
|
/* See comment in previous switch. */
|
|
|
|
|| GET_MODE (rhs) != outer_mode)
|
|
|
|
*inner_step = simplify_gen_binary (code, outer_mode,
|
|
|
|
*inner_step, op1);
|
|
|
|
else
|
|
|
|
*outer_step = simplify_gen_binary (code, outer_mode,
|
|
|
|
*outer_step, op1);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SIGN_EXTEND:
|
|
|
|
case ZERO_EXTEND:
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
if (GET_MODE (op0) != *inner_mode
|
|
|
|
|| *extend != UNKNOWN
|
|
|
|
|| *outer_step != const0_rtx)
|
|
|
|
abort ();
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
*extend = code;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
abort ();
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Gets the operation on register REG inside loop, in shape
|
|
|
|
|
|
|
|
OUTER_STEP + EXTEND_{OUTER_MODE} (SUBREG_{INNER_MODE} (REG + INNER_STEP))
|
|
|
|
|
|
|
|
If the operation cannot be described in this shape, return false. */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
get_biv_step (rtx reg, rtx *inner_step, enum machine_mode *inner_mode,
|
|
|
|
enum rtx_code *extend, enum machine_mode *outer_mode,
|
|
|
|
rtx *outer_step)
|
|
|
|
{
|
|
|
|
*outer_mode = GET_MODE (reg);
|
|
|
|
|
|
|
|
if (!get_biv_step_1 (last_def[REGNO (reg)], reg,
|
|
|
|
inner_step, inner_mode, extend, *outer_mode,
|
|
|
|
outer_step))
|
|
|
|
return false;
|
|
|
|
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
if (*inner_mode != *outer_mode
|
|
|
|
&& *extend == UNKNOWN)
|
|
|
|
abort ();
|
|
|
|
|
|
|
|
if (*inner_mode == *outer_mode
|
|
|
|
&& *extend != UNKNOWN)
|
|
|
|
abort ();
|
|
|
|
|
|
|
|
if (*inner_mode == *outer_mode
|
|
|
|
&& *outer_step != const0_rtx)
|
|
|
|
abort ();
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Determines whether DEF is a biv and if so, stores its description
|
|
|
|
to *IV. */
|
|
|
|
|
|
|
|
static bool
|
2004-02-24 04:43:59 +01:00
|
|
|
iv_analyze_biv (rtx def, struct rtx_iv *iv)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
|
|
|
unsigned regno;
|
|
|
|
rtx inner_step, outer_step;
|
|
|
|
enum machine_mode inner_mode, outer_mode;
|
|
|
|
enum rtx_code extend;
|
|
|
|
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
if (dump_file)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
fprintf (dump_file, "Analysing ");
|
|
|
|
print_rtl (dump_file, def);
|
|
|
|
fprintf (dump_file, " for bivness.\n");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
if (!REG_P (def))
|
|
|
|
{
|
|
|
|
if (!CONSTANT_P (def))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
return iv_constant (iv, def, VOIDmode);
|
|
|
|
}
|
|
|
|
|
|
|
|
regno = REGNO (def);
|
|
|
|
if (last_def[regno] == const0_rtx)
|
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
if (dump_file)
|
|
|
|
fprintf (dump_file, " not simple.\n");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (last_def[regno] && bivs[regno].analysed)
|
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
if (dump_file)
|
|
|
|
fprintf (dump_file, " already analysed.\n");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
*iv = bivs[regno];
|
|
|
|
return iv->base != NULL_RTX;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!last_def[regno])
|
|
|
|
{
|
|
|
|
iv_constant (iv, def, VOIDmode);
|
|
|
|
goto end;
|
|
|
|
}
|
|
|
|
|
|
|
|
iv->analysed = true;
|
|
|
|
if (!get_biv_step (def, &inner_step, &inner_mode, &extend,
|
|
|
|
&outer_mode, &outer_step))
|
|
|
|
{
|
|
|
|
iv->base = NULL_RTX;
|
|
|
|
goto end;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Loop transforms base to es (base + inner_step) + outer_step,
|
|
|
|
where es means extend of subreg between inner_mode and outer_mode.
|
|
|
|
The corresponding induction variable is
|
|
|
|
|
|
|
|
es ((base - outer_step) + i * (inner_step + outer_step)) + outer_step */
|
|
|
|
|
|
|
|
iv->base = simplify_gen_binary (MINUS, outer_mode, def, outer_step);
|
|
|
|
iv->step = simplify_gen_binary (PLUS, outer_mode, inner_step, outer_step);
|
|
|
|
iv->mode = inner_mode;
|
|
|
|
iv->extend_mode = outer_mode;
|
|
|
|
iv->extend = extend;
|
|
|
|
iv->mult = const1_rtx;
|
|
|
|
iv->delta = outer_step;
|
|
|
|
iv->first_special = inner_mode != outer_mode;
|
|
|
|
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
end:
|
|
|
|
if (dump_file)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
fprintf (dump_file, " ");
|
|
|
|
dump_iv_info (dump_file, iv);
|
|
|
|
fprintf (dump_file, "\n");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
bivs[regno] = *iv;
|
|
|
|
|
|
|
|
return iv->base != NULL_RTX;
|
|
|
|
}
|
|
|
|
|
c-decl.c, [...]: Fix comment typos and formatting.
* c-decl.c, c-ppoutput.c, combine.c, cppfiles.c, dwarf2out.c,
expr.c, fold-const.c, gcc.c, haifa-sched.c, loop-iv.c,
params.def, read-rtl.c, rtl.c, rtlanal.c, toplev.c: Fix
comment typos and formatting. Follow spelling conventions.
From-SVN: r78555
2004-02-27 08:09:43 +01:00
|
|
|
/* Analyzes operand OP of INSN and stores the result to *IV. */
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
static bool
|
2004-02-24 04:43:59 +01:00
|
|
|
iv_analyze_op (rtx insn, rtx op, struct rtx_iv *iv)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
|
|
|
rtx def_insn;
|
|
|
|
unsigned regno;
|
|
|
|
bool inv = CONSTANT_P (op);
|
|
|
|
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
if (dump_file)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
fprintf (dump_file, "Analysing operand ");
|
|
|
|
print_rtl (dump_file, op);
|
|
|
|
fprintf (dump_file, " of insn ");
|
|
|
|
print_rtl_single (dump_file, insn);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
if (GET_CODE (op) == SUBREG)
|
|
|
|
{
|
|
|
|
if (!subreg_lowpart_p (op))
|
|
|
|
return false;
|
|
|
|
|
2004-02-24 04:43:59 +01:00
|
|
|
if (!iv_analyze_op (insn, SUBREG_REG (op), iv))
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
return false;
|
|
|
|
|
|
|
|
return iv_subreg (iv, GET_MODE (op));
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!inv)
|
|
|
|
{
|
|
|
|
regno = REGNO (op);
|
|
|
|
if (!last_def[regno])
|
|
|
|
inv = true;
|
|
|
|
else if (last_def[regno] == const0_rtx)
|
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
if (dump_file)
|
|
|
|
fprintf (dump_file, " not simple.\n");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (inv)
|
|
|
|
{
|
|
|
|
iv_constant (iv, op, VOIDmode);
|
|
|
|
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
if (dump_file)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
fprintf (dump_file, " ");
|
|
|
|
dump_iv_info (dump_file, iv);
|
|
|
|
fprintf (dump_file, "\n");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
def_insn = iv_get_reaching_def (insn, op);
|
|
|
|
if (def_insn == const0_rtx)
|
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
if (dump_file)
|
|
|
|
fprintf (dump_file, " not simple.\n");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2004-02-24 04:43:59 +01:00
|
|
|
return iv_analyze (def_insn, op, iv);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
|
c-decl.c, [...]: Fix comment typos and formatting.
* c-decl.c, c-ppoutput.c, combine.c, cppfiles.c, dwarf2out.c,
expr.c, fold-const.c, gcc.c, haifa-sched.c, loop-iv.c,
params.def, read-rtl.c, rtl.c, rtlanal.c, toplev.c: Fix
comment typos and formatting. Follow spelling conventions.
From-SVN: r78555
2004-02-27 08:09:43 +01:00
|
|
|
/* Analyzes iv DEF defined in INSN and stores the result to *IV. */
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
bool
|
2004-02-24 04:43:59 +01:00
|
|
|
iv_analyze (rtx insn, rtx def, struct rtx_iv *iv)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
|
|
|
unsigned uid;
|
|
|
|
rtx set, rhs, mby = NULL_RTX, tmp;
|
|
|
|
rtx op0 = NULL_RTX, op1 = NULL_RTX;
|
|
|
|
struct rtx_iv iv0, iv1;
|
|
|
|
enum machine_mode amode;
|
|
|
|
enum rtx_code code;
|
|
|
|
|
|
|
|
if (insn == const0_rtx)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (GET_CODE (def) == SUBREG)
|
|
|
|
{
|
|
|
|
if (!subreg_lowpart_p (def))
|
|
|
|
return false;
|
|
|
|
|
2004-02-24 04:43:59 +01:00
|
|
|
if (!iv_analyze (insn, SUBREG_REG (def), iv))
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
return false;
|
|
|
|
|
|
|
|
return iv_subreg (iv, GET_MODE (def));
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!insn)
|
2004-02-24 04:43:59 +01:00
|
|
|
return iv_analyze_biv (def, iv);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
if (dump_file)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
fprintf (dump_file, "Analysing def of ");
|
|
|
|
print_rtl (dump_file, def);
|
|
|
|
fprintf (dump_file, " in insn ");
|
|
|
|
print_rtl_single (dump_file, insn);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
uid = INSN_UID (insn);
|
|
|
|
if (insn_info[uid].iv.analysed)
|
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
if (dump_file)
|
|
|
|
fprintf (dump_file, " already analysed.\n");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
*iv = insn_info[uid].iv;
|
|
|
|
return iv->base != NULL_RTX;
|
|
|
|
}
|
|
|
|
|
|
|
|
iv->mode = VOIDmode;
|
|
|
|
iv->base = NULL_RTX;
|
|
|
|
iv->step = NULL_RTX;
|
|
|
|
|
|
|
|
set = single_set (insn);
|
|
|
|
rhs = find_reg_equal_equiv_note (insn);
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
if (rhs)
|
|
|
|
rhs = XEXP (rhs, 0);
|
|
|
|
else
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
rhs = SET_SRC (set);
|
|
|
|
code = GET_CODE (rhs);
|
|
|
|
|
|
|
|
if (CONSTANT_P (rhs))
|
|
|
|
{
|
|
|
|
op0 = rhs;
|
|
|
|
amode = GET_MODE (def);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
switch (code)
|
|
|
|
{
|
|
|
|
case SUBREG:
|
|
|
|
if (!subreg_lowpart_p (rhs))
|
|
|
|
goto end;
|
|
|
|
op0 = rhs;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case REG:
|
|
|
|
op0 = rhs;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case SIGN_EXTEND:
|
|
|
|
case ZERO_EXTEND:
|
|
|
|
case NEG:
|
|
|
|
op0 = XEXP (rhs, 0);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case PLUS:
|
|
|
|
case MINUS:
|
|
|
|
op0 = XEXP (rhs, 0);
|
|
|
|
op1 = XEXP (rhs, 1);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case MULT:
|
|
|
|
op0 = XEXP (rhs, 0);
|
|
|
|
mby = XEXP (rhs, 1);
|
|
|
|
if (!CONSTANT_P (mby))
|
|
|
|
{
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
if (!CONSTANT_P (op0))
|
|
|
|
abort ();
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
tmp = op0;
|
|
|
|
op0 = mby;
|
|
|
|
mby = tmp;
|
|
|
|
}
|
|
|
|
break;
|
2004-06-24 18:50:35 +02:00
|
|
|
|
|
|
|
case ASHIFT:
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
if (CONSTANT_P (XEXP (rhs, 0)))
|
|
|
|
abort ();
|
2004-06-24 18:50:35 +02:00
|
|
|
op0 = XEXP (rhs, 0);
|
|
|
|
mby = XEXP (rhs, 1);
|
|
|
|
break;
|
|
|
|
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
default:
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
abort ();
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
amode = GET_MODE (rhs);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (op0)
|
|
|
|
{
|
2004-02-24 04:43:59 +01:00
|
|
|
if (!iv_analyze_op (insn, op0, &iv0))
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
goto end;
|
|
|
|
|
|
|
|
if (iv0.mode == VOIDmode)
|
|
|
|
{
|
|
|
|
iv0.mode = amode;
|
|
|
|
iv0.extend_mode = amode;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (op1)
|
|
|
|
{
|
2004-02-24 04:43:59 +01:00
|
|
|
if (!iv_analyze_op (insn, op1, &iv1))
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
goto end;
|
|
|
|
|
|
|
|
if (iv1.mode == VOIDmode)
|
|
|
|
{
|
|
|
|
iv1.mode = amode;
|
|
|
|
iv1.extend_mode = amode;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
switch (code)
|
|
|
|
{
|
|
|
|
case SIGN_EXTEND:
|
|
|
|
case ZERO_EXTEND:
|
|
|
|
if (!iv_extend (&iv0, code, amode))
|
|
|
|
goto end;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case NEG:
|
|
|
|
if (!iv_neg (&iv0))
|
|
|
|
goto end;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case PLUS:
|
|
|
|
case MINUS:
|
|
|
|
if (!iv_add (&iv0, &iv1, code))
|
|
|
|
goto end;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case MULT:
|
|
|
|
if (!iv_mult (&iv0, mby))
|
|
|
|
goto end;
|
|
|
|
break;
|
|
|
|
|
2004-06-24 18:50:35 +02:00
|
|
|
case ASHIFT:
|
|
|
|
if (!iv_shift (&iv0, mby))
|
|
|
|
goto end;
|
|
|
|
break;
|
|
|
|
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
*iv = iv0;
|
|
|
|
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
end:
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
iv->analysed = true;
|
|
|
|
insn_info[uid].iv = *iv;
|
|
|
|
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
if (dump_file)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
print_rtl (dump_file, def);
|
|
|
|
fprintf (dump_file, " in insn ");
|
|
|
|
print_rtl_single (dump_file, insn);
|
|
|
|
fprintf (dump_file, " is ");
|
|
|
|
dump_iv_info (dump_file, iv);
|
|
|
|
fprintf (dump_file, "\n");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
return iv->base != NULL_RTX;
|
|
|
|
}
|
|
|
|
|
Makefile.in (loop-unroll.o): Add HASHTAB_H and RECOG_H dependency.
* Makefile.in (loop-unroll.o): Add HASHTAB_H and RECOG_H dependency.
* basic-block.h (struct reorder_block_def): Add copy_number field.
* cfgloop.h (biv_p): Declare.
* cfgloopmanip.c (duplicate_loop_to_header_edge): Set copy_number.
* common.opt (fsplit-ivs-in-unroller): New flag.
* loop-iv.c (biv_p): New function.
* loop-unroll.c: Include hashtab.h and recog.h.
(struct iv_to_split, struct split_ivs_info): New types.
(analyze_ivs_to_split, si_info_start_duplication, split_ivs_in_copies,
free_si_info, si_info_hash, si_info_eq, analyze_iv_to_split_insn,
determine_split_iv_delta, get_ivts_expr, allocate_basic_variable,
insert_base_initialization, split_iv): New functions.
(peel_loop_completely, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations, peel_loop_simple, unroll_loop_stupid):
Use them.
* doc/invoke.texi (-fsplit-ivs-in-unroller): Document.
Co-Authored-By: Steven Bosscher <stevenb@suse.de>
From-SVN: r87487
2004-09-14 10:05:46 +02:00
|
|
|
/* Checks whether definition of register REG in INSN a basic induction
|
|
|
|
variable. IV analysis must have been initialized (via a call to
|
|
|
|
iv_analysis_loop_init) for this function to produce a result. */
|
|
|
|
|
|
|
|
bool
|
|
|
|
biv_p (rtx insn, rtx reg)
|
|
|
|
{
|
|
|
|
struct rtx_iv iv;
|
|
|
|
|
|
|
|
if (!REG_P (reg))
|
|
|
|
return false;
|
|
|
|
|
|
|
|
if (last_def[REGNO (reg)] != insn)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
return iv_analyze_biv (reg, &iv);
|
|
|
|
}
|
|
|
|
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
/* Calculates value of IV at ITERATION-th iteration. */
|
|
|
|
|
|
|
|
rtx
|
|
|
|
get_iv_value (struct rtx_iv *iv, rtx iteration)
|
|
|
|
{
|
|
|
|
rtx val;
|
|
|
|
|
|
|
|
/* We would need to generate some if_then_else patterns, and so far
|
|
|
|
it is not needed anywhere. */
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
if (iv->first_special)
|
|
|
|
abort ();
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
if (iv->step != const0_rtx && iteration != const0_rtx)
|
|
|
|
val = simplify_gen_binary (PLUS, iv->extend_mode, iv->base,
|
|
|
|
simplify_gen_binary (MULT, iv->extend_mode,
|
|
|
|
iv->step, iteration));
|
|
|
|
else
|
|
|
|
val = iv->base;
|
|
|
|
|
|
|
|
if (iv->extend_mode == iv->mode)
|
|
|
|
return val;
|
|
|
|
|
|
|
|
val = lowpart_subreg (iv->mode, val, iv->extend_mode);
|
|
|
|
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
if (iv->extend == UNKNOWN)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
return val;
|
|
|
|
|
|
|
|
val = simplify_gen_unary (iv->extend, iv->extend_mode, val, iv->mode);
|
|
|
|
val = simplify_gen_binary (PLUS, iv->extend_mode, iv->delta,
|
|
|
|
simplify_gen_binary (MULT, iv->extend_mode,
|
|
|
|
iv->mult, val));
|
|
|
|
|
|
|
|
return val;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Free the data for an induction variable analysis. */
|
|
|
|
|
|
|
|
void
|
|
|
|
iv_analysis_done (void)
|
|
|
|
{
|
|
|
|
max_insn_no = 0;
|
|
|
|
max_reg_no = 0;
|
|
|
|
if (insn_info)
|
|
|
|
{
|
|
|
|
free (insn_info);
|
|
|
|
insn_info = NULL;
|
|
|
|
}
|
|
|
|
if (last_def)
|
|
|
|
{
|
|
|
|
free (last_def);
|
|
|
|
last_def = NULL;
|
|
|
|
}
|
|
|
|
if (bivs)
|
|
|
|
{
|
|
|
|
free (bivs);
|
|
|
|
bivs = NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Computes inverse to X modulo (1 << MOD). */
|
|
|
|
|
|
|
|
static unsigned HOST_WIDEST_INT
|
|
|
|
inverse (unsigned HOST_WIDEST_INT x, int mod)
|
|
|
|
{
|
|
|
|
unsigned HOST_WIDEST_INT mask =
|
|
|
|
((unsigned HOST_WIDEST_INT) 1 << (mod - 1) << 1) - 1;
|
|
|
|
unsigned HOST_WIDEST_INT rslt = 1;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < mod - 1; i++)
|
|
|
|
{
|
|
|
|
rslt = (rslt * x) & mask;
|
|
|
|
x = (x * x) & mask;
|
|
|
|
}
|
|
|
|
|
|
|
|
return rslt;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Tries to estimate the maximum number of iterations. */
|
|
|
|
|
|
|
|
static unsigned HOST_WIDEST_INT
|
|
|
|
determine_max_iter (struct niter_desc *desc)
|
|
|
|
{
|
|
|
|
rtx niter = desc->niter_expr;
|
|
|
|
rtx mmin, mmax, left, right;
|
|
|
|
unsigned HOST_WIDEST_INT nmax, inc;
|
|
|
|
|
|
|
|
if (GET_CODE (niter) == AND
|
|
|
|
&& GET_CODE (XEXP (niter, 0)) == CONST_INT)
|
|
|
|
{
|
|
|
|
nmax = INTVAL (XEXP (niter, 0));
|
|
|
|
if (!(nmax & (nmax + 1)))
|
|
|
|
{
|
|
|
|
desc->niter_max = nmax;
|
|
|
|
return nmax;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
get_mode_bounds (desc->mode, desc->signed_p, desc->mode, &mmin, &mmax);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
nmax = INTVAL (mmax) - INTVAL (mmin);
|
|
|
|
|
|
|
|
if (GET_CODE (niter) == UDIV)
|
|
|
|
{
|
|
|
|
if (GET_CODE (XEXP (niter, 1)) != CONST_INT)
|
|
|
|
{
|
|
|
|
desc->niter_max = nmax;
|
|
|
|
return nmax;
|
|
|
|
}
|
|
|
|
inc = INTVAL (XEXP (niter, 1));
|
|
|
|
niter = XEXP (niter, 0);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
inc = 1;
|
|
|
|
|
|
|
|
if (GET_CODE (niter) == PLUS)
|
|
|
|
{
|
|
|
|
left = XEXP (niter, 0);
|
|
|
|
right = XEXP (niter, 0);
|
|
|
|
|
|
|
|
if (GET_CODE (right) == CONST_INT)
|
|
|
|
right = GEN_INT (-INTVAL (right));
|
|
|
|
}
|
|
|
|
else if (GET_CODE (niter) == MINUS)
|
|
|
|
{
|
|
|
|
left = XEXP (niter, 0);
|
|
|
|
right = XEXP (niter, 0);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
left = niter;
|
|
|
|
right = mmin;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (GET_CODE (left) == CONST_INT)
|
|
|
|
mmax = left;
|
|
|
|
if (GET_CODE (right) == CONST_INT)
|
|
|
|
mmin = right;
|
|
|
|
nmax = INTVAL (mmax) - INTVAL (mmin);
|
|
|
|
|
|
|
|
desc->niter_max = nmax / inc;
|
|
|
|
return nmax / inc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Checks whether register *REG is in set ALT. Callback for for_each_rtx. */
|
|
|
|
|
|
|
|
static int
|
|
|
|
altered_reg_used (rtx *reg, void *alt)
|
|
|
|
{
|
|
|
|
if (!REG_P (*reg))
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
return REGNO_REG_SET_P (alt, REGNO (*reg));
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Marks registers altered by EXPR in set ALT. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
mark_altered (rtx expr, rtx by ATTRIBUTE_UNUSED, void *alt)
|
|
|
|
{
|
|
|
|
if (GET_CODE (expr) == SUBREG)
|
|
|
|
expr = SUBREG_REG (expr);
|
|
|
|
if (!REG_P (expr))
|
|
|
|
return;
|
|
|
|
|
|
|
|
SET_REGNO_REG_SET (alt, REGNO (expr));
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Checks whether RHS is simple enough to process. */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
simple_rhs_p (rtx rhs)
|
|
|
|
{
|
|
|
|
rtx op0, op1;
|
|
|
|
|
|
|
|
if (CONSTANT_P (rhs)
|
|
|
|
|| REG_P (rhs))
|
|
|
|
return true;
|
|
|
|
|
|
|
|
switch (GET_CODE (rhs))
|
|
|
|
{
|
|
|
|
case PLUS:
|
|
|
|
case MINUS:
|
|
|
|
op0 = XEXP (rhs, 0);
|
|
|
|
op1 = XEXP (rhs, 1);
|
|
|
|
/* Allow reg + const sets only. */
|
|
|
|
if (REG_P (op0) && CONSTANT_P (op1))
|
|
|
|
return true;
|
|
|
|
if (REG_P (op1) && CONSTANT_P (op0))
|
|
|
|
return true;
|
|
|
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
default:
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Simplifies *EXPR using assignment in INSN. ALTERED is the set of registers
|
|
|
|
altered so far. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
simplify_using_assignment (rtx insn, rtx *expr, regset altered)
|
|
|
|
{
|
|
|
|
rtx set = single_set (insn);
|
2004-08-03 23:13:15 +02:00
|
|
|
rtx lhs = NULL_RTX, rhs;
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
bool ret = false;
|
|
|
|
|
|
|
|
if (set)
|
|
|
|
{
|
|
|
|
lhs = SET_DEST (set);
|
alias.c (record_set, [...]): Use REG_P.
2004-06-15 Jerry Quinn <jlquinn@optonline.net>
* alias.c (record_set, record_base_value, canon_rtx, get_addr,
nonlocal_mentioned_p_1, init_alias_analysis): Use REG_P.
* bt-load.c (find_btr_reference, insn_sets_btr_p, note_btr_set):
Likewise.
* builtins.c (expand_builtin_setjmp, expand_builtin_apply,
expand_builtin_mathfn, expand_builtin_strlen, expand_builtin_memcmp,
expand_builtin_strcmp, expand_builtin_strncmp,
expand_builtin_frame_address): Likewise.
* caller-save.c (mark_set_regs, add_stored_regs, mark_referenced_regs,
insert_one_insn): Likewise.
* calls.c (prepare_call_address, precompute_register_parameters,
precompute_arguments, expand_call, emit_library_call_value_1): Likewise.
* cfganal.c (flow_active_insn_p): Likewise.
* combine.c (set_nonzero_bits_and_sign_copies, can_combine_p,
combinable_i3pat, try_combine, find_split_point, COMBINE_RTX_EQUAL_P,
subst, combine_simplify_rtx, simplify_if_then_else, simplify_set,
make_extraction, recog_for_combine, gen_lowpart_for_combine,
simplify_comparison, record_dead_and_set_regs_1,
record_dead_and_set_regs, record_promoted_value,
check_promoted_subreg, get_last_value_validate, get_last_value,
reg_dead_at_p_1, reg_bitfield_target_p, distribute_notes,
unmentioned_reg_p_1): Likewise.
* conflict.c (mark_reg): Likewise.
* cse.c (HASH, COST, COST_IN, approx_reg_cost_1, notreg_cost,
mention_regs, insert_regs, lookup, lookup_for_remove, insert,
merge_equiv_classes, flush_hash_table, invalidate,
remove_invalid_refs, remove_invalid_subreg_refs, rehash_using_reg,
invalidate_for_call, use_related_value, canon_hash, exp_equiv_p,
cse_rtx_varies_p, canon_reg, find_best_addr, fold_rtx, equiv_constant,
record_jump_cond, cse_insn, addr_affects_sp_p,
invalidate_from_clobbers, cse_process_notes, cse_around_loop,
cse_set_around_loop, count_reg_usage, set_live_p, cse_change_cc_mode,
cse_cc_succs, cse_condition_code_reg): Likewise.
* cselib.c (cselib_reg_set_mode, rtx_equal_for_cselib_p,
cselib_lookup, cselib_invalidate_regno, cselib_invalidate_rtx,
cselib_record_set, cselib_record_sets): Likewise.
* dbxout.c (dbxout_symbol_location, dbxout_parms, dbxout_reg_parms,
dbxout_block): Likewise.
* df.c (df_ref_record, df_def_record_1, df_uses_record): Likewise.
* dojump.c (do_jump): Likewise.
* dwarf2out.c (dwarf2out_frame_debug_expr, is_pseudo_reg,
is_based_loc, rtl_for_decl_location): Likewise.
* emit-rtl.c (set_reg_attrs_for_parm, set_decl_rtl,
set_decl_incoming_rtl, mark_user_reg): Likewise.
* explow.c (copy_all_regs, copy_all_regs, memory_address, force_reg,
copy_to_suggested_reg, allocate_dynamic_stack_space,
probe_stack_range, hard_function_value): Likewise.
* expmed.c (store_bit_field, store_fixed_bit_field,
store_split_bit_field, extract_bit_field, extract_fixed_bit_field,
extract_split_bit_field, expand_divmod, emit_store_flag_force):
Likewise.
* expr.c (convert_move, convert_modes,
block_move_libcall_safe_for_call_parm, emit_group_load, use_reg,
use_group_regs, emit_move_insn, emit_move_insn_1,
compress_float_constant, push_block, emit_single_push_insn,
emit_push_insn, get_subtarget, expand_assignment, store_expr,
store_constructor, store_field, force_operand, safe_from_p,
expand_expr_real_1, expand_increment, do_store_flag, do_tablejump):
Likewise.
* final.c (profile_function, final_scan_insn, alter_subreg,
get_mem_expr_from_op, output_asm_operand_names, output_operand,
only_leaf_regs_used, leaf_renumber_regs_insn): Likewise.
* flow.c (verify_wide_reg_1, mark_regs_live_at_end,
find_regno_partial, propagate_one_insn, init_propagate_block_info,
insn_dead_p, libcall_dead_p, mark_set_1, not_reg_cond,
attempt_auto_inc, find_auto_inc, mark_used_regs,
count_or_remove_death_notes_bb): Likewise.
* function.c (find_temp_slot_from_address, update_temp_slot_address,
preserve_temp_slots, put_var_into_stack, fixup_var_refs_insn,
fixup_var_refs_1, fixup_stack_1, optimize_bit_field, flush_addressof,
put_addressof_into_stack, purge_addressof_1, insns_for_mem_walk,
purge_single_hard_subreg_set, instantiate_decl,
instantiate_virtual_regs_1, aggregate_value_p, assign_parms,
promoted_input_arg, setjmp_vars_warning, setjmp_args_warning,
setjmp_protect, setjmp_protect_args, fix_lexical_addr,
expand_function_start, diddle_return_value, clobber_return_register,
expand_function_end, keep_stack_depressed, handle_epilogue_set,
update_epilogue_consts): Likewise.
* genemit.c (gen_exp, gen_insn): Likewise.
* genrecog.c (make_insn_sequence): Likewise.
* global.c (global_conflicts, expand_preferences, mark_reg_store,
mark_reg_conflicts, set_preference, reg_becomes_live,
build_insn_chain, mark_reg_change): Likewise.
* haifa_sched.c (CONST_BASED_ADDRESS_P, find_set_reg_weight):
Likewise.
* ifcvt.c (noce_try_abs, noce_get_condition, noce_process_if_block):
Likewise.
* integrate.c (copy_rtx_and_substitute, try_constants,
subst_constants, mark_stores, allocate_initial_values): Likewise.
* jump.c (reversed_comparison_code_parts, delete_prior_computation,
delete_computation, rtx_renumbered_equal_p, true_regnum,
reg_or_subregno): Likewise.
* lcm.c (reg_dies, reg_becomes_live): Likewise.
* local-alloc.c (validate_equiv_mem_from_store, validate_equiv_mem,
update_equiv_regs, no_equiv, block_alloc, combine_regs, reg_is_set,
wipe_dead_reg, no_conflict_p): Likewise.
* loop-iv.c (simple_reg_p, simple_set_p, kill_sets,
iv_get_reaching_def, iv_analyze_biv, altered_reg_used, mark_altered,
simple_rhs_p, simplify_using_assignment, implies_p): Likewise.
* loop.c (scan_loop, combine_movables, rtx_equal_for_loop_p,
move_movables, note_set_pseudo_multiple_uses, consec_sets_invariant_p,
find_single_use_in_loop, count_one_set, loop_bivs_init_find,
loop_givs_rescan, check_insn_for_bivs, check_insn_for_givs,
valid_initial_value_p, simplify_giv_expr, consec_sets_giv,
loop_regs_update, check_dbra_loop, maybe_eliminate_biv,
maybe_eliminate_biv_1, record_initial, update_reg_last_use,
canonicalize_condition, loop_regs_scan, load_mems, try_copy_prop,
try_swap_copy_prop): Likewise.
* optabs.c (expand_binop, expand_vector_binop, expand_vector_unop,
expand_abs, emit_no_conflict_block, emit_libcall_block, expand_float):
Likewise.
* postreload.c (reload_cse_simplify, reload_cse_simplify_set,
reload_cse_simplify_operands, reload_combine,
reload_combine_note_store, reload_combine_note_use,
reload_cse_move2add, move2add_note_store): Likewise.
* print-rtl.c (print_rtx): Likewise.
* ra-build.c (copy_insn_p, remember_move, init_one_web_common,
contains_pseudo, handle_asm_insn): Likewise.
* ra-debug.c (ra_print_rtx_object, dump_constraints,
dump_static_insn_cost): Likewise.
* ra-rewrite.c (slots_overlap_p, emit_colors,
remove_suspicious_death_notes): Likewise.
* recog.c (validate_replace_rtx_1, find_single_use_1, find_single_use,
register_operand, scratch_operand, nonmemory_operand,
constrain_operands): Likewise.
* reg-stack (check_asm_stack_operands, remove_regno_note,
emit_swap_insn, swap_rtx_condition, subst_stack_regs_pat,
subst_asm_stack_regs): Likewise.
* regclass.c (scan_one_insn, record_reg_classes, copy_cost,
record_address_regs, reg_scan_mark_refs): Likewise.
* regmove.c (discover_flags_reg, replacement_quality,
copy_src_to_dest, reg_is_remote_constant_p, regmove_optimize,
fixup_match_1): Likewise.
* regrename.c (note_sets, clear_dead_regs, build_def_use, kill_value,
kill_set_value, copyprop_hardreg_forward_1): Likewise.
* reload.c (MATCHES, push_secondary_reload, find_reusable_reload,
reload_inner_reg_of_subreg, can_reload_into, push_reload,
combine_reloads, find_dummy_reload, hard_reg_set_here_p,
operands_match_p, decompose, find_reloads, find_reloads_toplev,
find_reloads_address, subst_indexed_address, find_reloads_address_1,
find_reloads_subreg_address, find_replacement,
refers_to_regno_for_reload_p, reg_overlap_mentioned_for_reload_p,
refers_to_mem_for_reload_p, find_equiv_reg, regno_clobbered_p): Likewise.
* reload1.c (replace_pseudos_in, reload, calculate_needs_all_insns,
find_reg, delete_dead_insn, alter_reg, eliminate_regs,
elimination_effects, eliminate_regs_in_insn, scan_paradoxical_subregs,
forget_old_reloads_1, reload_reg_free_for_value_p, choose_reload_regs,
emit_input_reload_insns, emit_output_reload_insns, do_input_reload,
do_output_reload, emit_reload_insns, gen_reload,
delete_address_reloads_1, inc_for_reload): Likewise.
* reorg.c (update_reg_dead_notes, fix_reg_dead_note,
update_reg_unused_notes, fill_slots_from_thread): Likewise.
* resource.c (update_live_status, mark_referenced_resources,
mark_set_resources, mark_target_live_regs): Likewise.
* rtlanal.c (nonzero_address_p, get_jump_table_offset,
global_reg_mentioned_p_1, reg_mentioned_p, reg_referenced_p,
reg_set_p, set_noop_p, find_last_value, refers_to_regno_p,
note_stores, dead_or_set_p, dead_or_set_regno_p, find_regno_note,
find_reg_fusage, find_regno_fusage, replace_regs, regno_use_in,
parms_set, find_first_parameter_load, keep_with_call_p,
hoist_test_store, hoist_update_store, address_cost, nonzero_bits1,
num_sign_bit_copies1): Likewise.
* rtlhooks.c (gen_lowpart_general): Likewise.
* sched-deps.c (deps_may_trap_p, sched_analyze_1, sched_analyze_insn,
sched_analyze): Likewise.
* sched-rgn.c (check_live_1, update_live_1, sets_likely_spilled_1):
Likewise.
* sdbout.c (sdbout_symbol, sdbout_parms, sdbout_reg_parms): Likewise.
* simplify-rtx.c (simplify_replace_rtx, simplify_unary_operation,
simplify_binary_operation, simplify_const_relational_operation,
simplify_subreg): Likewise.
* stmt.c (decl_conflicts_with_clobbers_p, expand_asm_operands,
expand_end_stmt_expr, expand_return, expand_decl,
expand_anon_union_decl): Likewise.
* unroll.c (precondition_loop_p, calculate_giv_inc, copy_loop_body,
find_splittable_regs, find_splittable_givs, find_common_reg_term,
loop_iterations): Likewise.
* var-tracking.c (variable_union, variable_part_different_p,
variable_different_p, count_uses, add_uses, add_stores,
compute_bb_dataflow, set_variable_part, delete_variable_part,
emit_notes_in_bb, vt_get_decl_and_offset, vt_add_function_parameters):
Likewise.
* varasm.c (assemble_variable): Likewise.
From-SVN: r83195
2004-06-15 20:02:40 +02:00
|
|
|
if (!REG_P (lhs)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|| altered_reg_used (&lhs, altered))
|
|
|
|
ret = true;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
ret = true;
|
|
|
|
|
|
|
|
note_stores (PATTERN (insn), mark_altered, altered);
|
alias.c (nonlocal_mentioned_p, [...]): Use, LABEL_P, JUMP_P, CALL_P, NONJUMP_INSN_P, INSN_P, NOTE_P, BARRIER_P.
2004-07-08 Jerry Quinn <jlquinn@optonline.net>
* alias.c (nonlocal_mentioned_p, nonlocal_referenced_p,
nonlocal_set_p, init_alias_analysis): Use, LABEL_P, JUMP_P, CALL_P,
NONJUMP_INSN_P, INSN_P, NOTE_P, BARRIER_P.
* bb-reorder.c (mark_bb_for_unlikely_executed_section,
add_labels_and_missing_jumps, find_jump_block,
fix_crossing_unconditional_branches, add_reg_crossing_jump_notes):
Likewise.
* bt-load.c (btr_referenced_p, compute_defs_uses_and_gen,
link_btr_uses, move_btr_def): Likewise.
* builtins.c (expand_builtin_longjmp, expand_builtin_nonlocal_goto,
expand_builtin_expect_jump): Likewise.
* caller-save.c (save_call_clobbered_regs, insert_one_insn): Likewise.
* calls.c (expand_call, emit_library_call_value_1): Likewise.
* cfganal.c (forwarder_block_p): Likewise.
* cfgbuild.c (inside_basic_block_p, count_basic_blocks,
make_label_edge, rtl_make_eh_edge, make_edges, find_basic_blocks_1,
find_bb_boundaries): Likewise.
* cfgcleanup.c (try_simplify_condjump, try_forward_edges,
merge_blocks_move_predecessor_nojumps,
merge_blocks_move_successor_nojumps, insns_match_p,
flow_find_cross_jump, outgoing_edges_match, try_crossjump_to_edge,
try_optimize_cfg): Likewise.
* cfgexpand.c (expand_block, construct_exit_block): Likewise.
* cfglayout.c (skip_insns_after_block, label_for_bb,
record_effective_endpoints, insn_locators_initialize,
fixup_reorder_chain, update_unlikely_executed_notes): Likewise.
* cfgmainloop.c (create_loop_notes): Likewise.
* cfgrtl.c (delete_insn, delete_insn_chain,
create_basic_block_structure, rtl_delete_block, free_bb_for_insn,
update_bb_for_insn, rtl_merge_blocks, rtl_can_merge_blocks,
block_label, try_redirect_by_replacing_jump, last_loop_beg_note,
redirect_branch_edge, force_nonfallthru_and_redirect,
rtl_tidy_fallthru_edge, back_edge_of_syntactic_loop_p,
rtl_split_edge, commit_one_edge_insertion, print_rtl_with_bb,
update_br_prob_note, rtl_verify_flow_info_1, rtl_verify_flow_info,
purge_dead_edges, cfg_layout_redirect_edge_and_branch,
cfg_layout_delete_block, cfg_layout_can_merge_blocks_p,
cfg_layout_merge_blocks, rtl_block_ends_with_call_p,
need_fake_edge_p, rtl_flow_call_edges_add): Likewise.
* combine.c (combine_instructions, can_combine_p, try_combine,
find_split_point, record_dead_and_set_regs, reg_dead_at_p,
distribute_notes, distribute_links, insn_cuid): Likewise.
* cse.c (fold_rtx, cse_insn, cse_around_loop,
invalidate_skipped_block, cse_set_around_loop,
cse_end_of_basic_block, cse_main, cse_basic_block,
cse_condition_code_reg): Likewise.
* cselib.c (cselib_process_insn): Likewise.
* ddg.c (create_ddg): Likewise.
* df.c (df_insn_refs_record, df_bb_rd_local_compute, df_insns_modify):
Likewise.
* dwarf2out.c (dwarf2out_stack_adjust, dwarf2out_frame_debug,
gen_label_die, dwarf2out_var_location): Likewise.
* emit-rtl.c (get_first_nonnote_insn, get_last_nonnote_insn,
next_insn, previous_insn, next_nonnote_insn, prev_nonnote_insn,
last_call_insn, active_insn_p, next_label, prev_label,
link_cc0_insns, next_cc0_user, try_split, add_insn_after,
add_insn_before, remove_insn, add_function_usage_to,
reorder_insns, find_line_note, remove_unnecessary_notes,
emit_insn_after_1, classify_insn): Likewise.
* except.c (convert_from_eh_region_ranges_1, emit_to_new_bb_before,
connect_post_landing_pads, sjlj_mark_call_sites,
sjlj_emit_function_enter, sjlj_emit_function_exit, reachable_handlers,
can_throw_internal, can_throw_external, set_nothrow_function_flags,
convert_to_eh_region_ranges): Likewise.
* explow.c (optimize_save_area_alloca): Likewise.
* expr.c (expand_expr_real): Likewise.
* final.c (insn_current_reference_address, compute_alignments,
shorten_branches, final, scan_ahead_for_unlikely_executed_note,
final_scan_insn, output_asm_label, leaf_function_p): Likewise.
* flow.c (first_insn_after_basic_block_note, delete_dead_jumptables,
propagate_block_delete_insn, propagate_one_insn,
init_propagate_block_info, propagate_block, libcall_dead_p,
mark_set_1, attempt_auto_inc, find_auto_inc, try_pre_increment):
Likewise.
* function.c (instantiate_virtual_regs, reorder_blocks_1,
expand_function_start, expand_function_end, contains,
thread_prologue_and_epilogue_insns,
reposition_prologue_and_epilogue_notes): Likewise.
* gcse.c (constprop_register, bypass_conditional_jumps,
insert_insn_end_bb, gcse_after_reload): Likewise.
* genemit.c (gen_expand, gen_split): Likewise.
* genpeep.c (gen_peephole, main): Likewise.
* global.c (build_insn_chain): Likewise.
* graph.c (node_data, print_rtl_graph_with_bb): Likewise.
* haifa-sched.c (unlink_other_notes, unlink_line_notes,
get_block_head_tail, no_real_insns_p, rm_line_notes, save_line_notes,
restore_line_notes, rm_redundant_line_notes, rm_other_notes,
ok_for_early_queue_removal, set_priorities, sched_init): Likewise.
* ifcvt.c (count_bb_insns, first_active_insn, last_active_insn,
cond_exec_process_insns, end_ifcvt_sequence, noce_process_if_block,
merge_if_block, block_jumps_and_fallthru_p, find_if_block,
dead_or_predicable): Likewise.
* integrate.c (try_constants): Likewise.
* jump.c (rebuild_jump_labels, cleanup_barriers,
purge_line_number_notes, init_label_info, mark_all_labels,
squeeze_notes, get_label_before, get_label_after,
reversed_comparison_code_parts, simplejump_p, pc_set,
returnjump_p, onlyjump_p, follow_jumps, mark_jump_label,
delete_barrier, delete_prior_computation, delete_computation,
delete_related_insns, delete_for_peephole, redirect_jump):
Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (validate_equiv_mem, update_equiv_regs, block_alloc):
Likewise.
* loop-doloop.c (doloop_valid_p, doloop_optimize): Likewise.
* loop-invariant.c (find_exits, find_invariants_bb): Likewise.
* loop-iv.c (simplify_using_assignment): Likewise.
* loop.c (compute_luids, loop_optimize, scan_loop, libcall_other_reg,
libcall_benefit, skip_consec_insns, move_movables, prescan_loop,
find_and_verify_loops, labels_in_range_p, for_each_insn_in_loop,
loop_bivs_init_find, strength_reduce, check_insn_for_bivs,
check_insn_for_givs, check_final_value, update_giv_derive,
basic_induction_var, product_cheap_p, check_dbra_loop,
loop_insn_first_p, last_use_this_basic_block,
canonicalize_condition, get_condition, loop_regs_scan, load_mems,
try_copy_prop, LOOP_BLOCK_NUM, loop_dump_aux): Likewise.
* modulo-sched.c (doloop_register_get, find_line_note, sms_schedule,
sms_schedule_by_order): Likewise.
* optabs.c (emit_no_conflict_block, emit_libcall_block): Likewise.
* postreload.c (reload_cse_simplify_operands, reload_combine,
reload_cse_move2add): Likewise.
* predict.c (can_predict_insn_p, estimate_probability,
expected_value_to_br_prob, process_note_predictions): Likewise.
* print-rtl.c (print_rtx, print_rtl, print_rtl_single): Likewise.
* profile.c (branch_prob): Likewise.
* ra-build.c (live_out_1, livethrough_conflicts_bb,
detect_webs_set_in_cond_jump): Likewise.
* ra-debug.c (ra_print_rtx_object, ra_debug_insns,
ra_print_rtl_with_bb): Likewise.
* ra-rewrite.c (insert_stores, rewrite_program2): Likewise.
* recog.c (next_insn_tests_no_inequality, find_single_use,
split_all_insns, peephole2_optimize, if_test_bypass_p): Likewise.
* reg-stack.c (next_flags_user, record_label_references,
emit_swap_insn, swap_rtx_condition, subst_stack_regs,
compensate_edge, convert_regs_1): Likewise.
* regclass.c (scan_one_insn): Likewise.
* regmove.c (optimize_reg_copy_1, optimize_reg_copy_2, fixup_match_2,
regmove_optimize, fixup_match_1, single_set_for_csa,
combine_stack_adjustments_for_block): Likewise.
* regrename.c (build_def_use, copyprop_hardreg_forward_1): Likewise.
* reload.c (find_reloads, find_reloads_address_1, subst_reloads,
find_equiv_reg): Likewise.
* reload1.c (reload, calculate_needs_all_insns, set_label_offsets,
reload_as_needed, emit_input_reload_insns, do_output_reload,
delete_output_reload, delete_address_reloads_1, fixup_abnormal_edges):
Likewise.
* reorg.c (find_end_label, emit_delay_sequence,
delete_from_delay_slot, delete_scheduled_jump, optimize_skip,
get_jump_flags, rare_destination, mostly_true_jump,
try_merge_delay_insns, redundant_insn, own_thread_p,
fill_simple_delay_slots, fill_slots_from_thread,
fill_eager_delay_slots, relax_delay_slots, make_return_insns,
dbr_schedule): Likewise.
* resource.c (find_basic_block, next_insn_no_annul,
find_dead_or_set_registers, mark_target_live_regs): Likewise.
* rtl.h (RTX_PREV): Likewise.
* rtlanal.c (global_reg_mentioned_p, no_labels_between_p,
no_jumps_between_p, reg_used_between_p, reg_referenced_between_p,
reg_set_p, find_last_value, dead_or_set_regno_p, find_reg_fusage,
find_regno_fusage, pure_call_p, replace_label, rtx_referenced_p_1,
tablejump_p, computed_jump_p, insns_safe_to_move_p,
find_first_parameter_load, can_hoist_insn_p): Likewise.
* sched-deps.c (get_condition, add_dependence, sched_analyze_2,
sched_analyze_insn, sched_analyze, add_forward_dependence): Likewise.
* sched-ebb.c (fix_basic_block_boundaries, add_deps_for_risky_insns,
schedule_ebbs): Likewise.
* sched-rgn.c (is_cfg_nonregular, find_conditional_protection,
is_conditionally_protected, can_schedule_ready_p,
add_branch_dependences, debug_dependencies): Likewise.
* stmt.c (emit_nop, expand_start_case, emit_jump_if_reachable):
Likewise.
* unroll.c (unroll_loop, copy_loop_body, back_branch_in_range_p,
reg_dead_after_loop, loop_find_equiv_value, loop_iterations,
set_dominates_use, ujump_to_loop_cont): Likewise.
* var-tracking.c (prologue_stack_adjust, vt_initialize): Likewise.
* varasm.c (output_constant_pool_1): Likewise.
From-SVN: r84341
2004-07-09 05:29:35 +02:00
|
|
|
if (CALL_P (insn))
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
/* Kill all call clobbered registers. */
|
|
|
|
for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
|
|
|
|
if (TEST_HARD_REG_BIT (regs_invalidated_by_call, i))
|
|
|
|
SET_REGNO_REG_SET (altered, i);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (ret)
|
|
|
|
return;
|
|
|
|
|
|
|
|
rhs = find_reg_equal_equiv_note (insn);
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
if (rhs)
|
|
|
|
rhs = XEXP (rhs, 0);
|
|
|
|
else
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
rhs = SET_SRC (set);
|
|
|
|
|
|
|
|
if (!simple_rhs_p (rhs))
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (for_each_rtx (&rhs, altered_reg_used, altered))
|
|
|
|
return;
|
|
|
|
|
|
|
|
*expr = simplify_replace_rtx (*expr, lhs, rhs);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Checks whether A implies B. */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
implies_p (rtx a, rtx b)
|
|
|
|
{
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
rtx op0, op1, opb0, opb1, r;
|
|
|
|
enum machine_mode mode;
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
if (GET_CODE (a) == EQ)
|
|
|
|
{
|
|
|
|
op0 = XEXP (a, 0);
|
|
|
|
op1 = XEXP (a, 1);
|
|
|
|
|
|
|
|
if (REG_P (op0))
|
|
|
|
{
|
|
|
|
r = simplify_replace_rtx (b, op0, op1);
|
|
|
|
if (r == const_true_rtx)
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (REG_P (op1))
|
|
|
|
{
|
|
|
|
r = simplify_replace_rtx (b, op1, op0);
|
|
|
|
if (r == const_true_rtx)
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
/* A < B implies A + 1 <= B. */
|
|
|
|
if ((GET_CODE (a) == GT || GET_CODE (a) == LT)
|
|
|
|
&& (GET_CODE (b) == GE || GET_CODE (b) == LE))
|
|
|
|
{
|
|
|
|
op0 = XEXP (a, 0);
|
|
|
|
op1 = XEXP (a, 1);
|
|
|
|
opb0 = XEXP (b, 0);
|
|
|
|
opb1 = XEXP (b, 1);
|
|
|
|
|
|
|
|
if (GET_CODE (a) == GT)
|
|
|
|
{
|
|
|
|
r = op0;
|
|
|
|
op0 = op1;
|
|
|
|
op1 = r;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (GET_CODE (b) == GE)
|
|
|
|
{
|
|
|
|
r = opb0;
|
|
|
|
opb0 = opb1;
|
|
|
|
opb1 = r;
|
|
|
|
}
|
|
|
|
|
|
|
|
mode = GET_MODE (op0);
|
|
|
|
if (mode != GET_MODE (opb0))
|
|
|
|
mode = VOIDmode;
|
|
|
|
else if (mode == VOIDmode)
|
|
|
|
{
|
|
|
|
mode = GET_MODE (op1);
|
|
|
|
if (mode != GET_MODE (opb1))
|
|
|
|
mode = VOIDmode;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (mode != VOIDmode
|
|
|
|
&& rtx_equal_p (op1, opb1)
|
|
|
|
&& simplify_gen_binary (MINUS, mode, opb0, op0) == const1_rtx)
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Canonicalizes COND so that
|
|
|
|
|
|
|
|
(1) Ensure that operands are ordered according to
|
|
|
|
swap_commutative_operands_p.
|
|
|
|
(2) (LE x const) will be replaced with (LT x <const+1>) and similarly
|
|
|
|
for GE, GEU, and LEU. */
|
|
|
|
|
|
|
|
rtx
|
|
|
|
canon_condition (rtx cond)
|
|
|
|
{
|
|
|
|
rtx tem;
|
|
|
|
rtx op0, op1;
|
|
|
|
enum rtx_code code;
|
|
|
|
enum machine_mode mode;
|
|
|
|
|
|
|
|
code = GET_CODE (cond);
|
|
|
|
op0 = XEXP (cond, 0);
|
|
|
|
op1 = XEXP (cond, 1);
|
|
|
|
|
|
|
|
if (swap_commutative_operands_p (op0, op1))
|
|
|
|
{
|
|
|
|
code = swap_condition (code);
|
|
|
|
tem = op0;
|
|
|
|
op0 = op1;
|
|
|
|
op1 = tem;
|
|
|
|
}
|
|
|
|
|
|
|
|
mode = GET_MODE (op0);
|
|
|
|
if (mode == VOIDmode)
|
|
|
|
mode = GET_MODE (op1);
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
if (mode == VOIDmode)
|
|
|
|
abort ();
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
if (GET_CODE (op1) == CONST_INT
|
|
|
|
&& GET_MODE_CLASS (mode) != MODE_CC
|
|
|
|
&& GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT)
|
|
|
|
{
|
|
|
|
HOST_WIDE_INT const_val = INTVAL (op1);
|
|
|
|
unsigned HOST_WIDE_INT uconst_val = const_val;
|
|
|
|
unsigned HOST_WIDE_INT max_val
|
|
|
|
= (unsigned HOST_WIDE_INT) GET_MODE_MASK (mode);
|
|
|
|
|
|
|
|
switch (code)
|
|
|
|
{
|
|
|
|
case LE:
|
|
|
|
if ((unsigned HOST_WIDE_INT) const_val != max_val >> 1)
|
|
|
|
code = LT, op1 = gen_int_mode (const_val + 1, GET_MODE (op0));
|
|
|
|
break;
|
|
|
|
|
|
|
|
/* When cross-compiling, const_val might be sign-extended from
|
|
|
|
BITS_PER_WORD to HOST_BITS_PER_WIDE_INT */
|
|
|
|
case GE:
|
|
|
|
if ((HOST_WIDE_INT) (const_val & max_val)
|
|
|
|
!= (((HOST_WIDE_INT) 1
|
|
|
|
<< (GET_MODE_BITSIZE (GET_MODE (op0)) - 1))))
|
|
|
|
code = GT, op1 = gen_int_mode (const_val - 1, mode);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEU:
|
|
|
|
if (uconst_val < max_val)
|
|
|
|
code = LTU, op1 = gen_int_mode (uconst_val + 1, mode);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case GEU:
|
|
|
|
if (uconst_val != 0)
|
|
|
|
code = GTU, op1 = gen_int_mode (uconst_val - 1, mode);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (op0 != XEXP (cond, 0)
|
|
|
|
|| op1 != XEXP (cond, 1)
|
|
|
|
|| code != GET_CODE (cond)
|
|
|
|
|| GET_MODE (cond) != SImode)
|
|
|
|
cond = gen_rtx_fmt_ee (code, SImode, op0, op1);
|
|
|
|
|
|
|
|
return cond;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Tries to use the fact that COND holds to simplify EXPR. ALTERED is the
|
|
|
|
set of altered regs. */
|
|
|
|
|
|
|
|
void
|
|
|
|
simplify_using_condition (rtx cond, rtx *expr, regset altered)
|
|
|
|
{
|
|
|
|
rtx rev, reve, exp = *expr;
|
|
|
|
|
alias.c (rtx_equal_for_memref_p): Use predicates to test rtx classes and new rtx class codes...
2004-02-07 Paolo Bonzini <bonzini@gnu.org>
* alias.c (rtx_equal_for_memref_p): Use predicates
to test rtx classes and new rtx class codes, possibly
splitting conditionals that tested against '<' and 'o'.
* caller-save.c (save_call_clobbered_regs): Likewise.
* combine.c (contains_muldiv, find_split_point, subst,
combine_simplify_rtx, simplify_if_then_else,
simplify_set, simplify_logical, expand_compound_operation,
make_compound_operation, if_then_else_cond, known_cond,
apply_distributive_law, cached_nonzero_bits,
cached_num_sign_bit_copies, simplify_shift_const,
gen_binary, simplify_comparison, update_table_tick,
record_value_for_reg, get_lsat_value_validate): Likewise.
* cse.c (mention_regs, find_best_addr, find_comparison_args,
fold_rtx, cse_insn, invalidate_memory, cse_basic_block):
Likewise.
* emit-rtl.c (copy_insn_1): Likewise.
* expr.c (force_operand): Likewise.
* final.c (final_scan_insn, get_mem_expr_from_op): Likewise.
* flow.c (notice_stack_pointer_modification_1,
invalidate_mems_from_autoinc, ior_reg_cond, not_reg_cond,
and_reg_cond, elim_reg_cond): Likewise.
* function.c (update_epilogue_consts): Likewise.
* genattrtab.c (attr_rtx_1): Likewise.
* genopinit.c (gen_insn): Likewise.
* integrate.c (subst_constants): Likewise.
* jump.c (reversed_comparison_code_parts,
reversed_comparison_code, delete_related_insns,
rtx_renumbered_equal_p): Likewise.
* local-alloc.c (block_alloc): Likewise.
* loop.c (rtx_equal_for_prefetch_p, maybe_eliminate_biv,
canonicalize_condition): Likewise.
* loop-iv.c (simplify_using_conditions, iv_number_of_iterations):
Likewise.
* optabs.c (add_equal_node, expand_binop): Likewise.
* predict.c (estimate_probability): Likewise.
* ra-debug.c (ra_print_rtx_2op, ra_print_rtx): Likewise.
* recog.c (validate_replace_rtx_1, comparison_operator,
offsettable_address_p, constrain_operands): Likewise.
* reg-stack.c (swap_rtx_condition_1, subst_stack_regs_pat):
Likewise.
* regclass.c (scan_one_insn): Likewise.
* regmove.c (stable_and_no_regs_but_for_p): Likewise.
* regrename.c (kill_autoinc_value): Likewise.
* reload.c (find_reusable_reload, find_reloads,
reg_overlap_mentioned_for_reload_p): Likewise.
* reload1.c (gen_reload, delete_address_reloads_1): Likewise.
* rtl.c (copy_rtx): Likewise.
* rtl.h (CONSTANT_P, INSN_P): Likewise.
* rtlanal.c (commutative_operand_precedence): Likewise.
* sched-deps.c (conditions_mutex_p): Likewise.
* sched-rgn.c (is_cfg_nonregular): Likewise.
* simplify-rtx.c (simplify_gen_binary,
simplify_gen_relational, simplify_replace_rtx,
simplify_unary_operation, simplify_binary_operation,
simplify_ternary_operation, simplify_rtx): Likewise.
* unroll.c (reg_dead_after_loop): Likewise.
* config/alpha/alpha.c (alpha_swapped_comparison_operator,
print_operand): Likewise.
* config/arc/arc.c (proper_comparison_operator): Likewise.
* config/arm/arm.c (arm_arm_address_cost, arm_select_cc_mode):
Likewise.
* config/avr/avr.c (_reg_unused_after): Likewise.
* config/frv/frv.c (frv_ifcvt_modify_tests,
frv_ifcvt_modify_insn, frv_pack_insn): Likewise.
* config/i386/i386.c (ix86_comparison_operator,
ix86_carry_flag_operator, fcmov_comparison_operator,
arith_or_logical_operator, print_operand,
ix86_expand_binary_operator, ix86_binary_operator_ok):
Likewise.
* config/i386/i386.md: Likewise.
* config/ia64/ia64.c (not_postinc_memory_operand,
ia64_print_operand, update_set_flags, errata_emit_nops):
Likewise.
* config/ia64/ia64.h (PREFERRED_RELOAD_CLASS,
CONSTRAINT_OK_FOR_S): Likewise.
* config/ip2k/ip2k.c (mdr_resequence_xy_yx,
mdr_try_move_dp_reload, ip2k_check_can_adjust_stack_ref,
ip2k_xexp_not_uses_reg_for_mem, ip2k_xexp_not_uses_reg_p,
ip2k_composite_xexp_not_uses_reg_p, ip2k_unary_operator):
Likewise.
* config/iq2000/iq2000.c (cmp_op, symbolic_expression_p,
eqne_comparison_operator, signed_comparison_operator):
Likewise.
* config/mips/mips.c (cmp_op, symbolic_expression_p):
Likewise.
* config/mmix/mmix (mmix_foldable_comparison_operator,
mmix_comparison_operator): Likewise.
* config/pa/pa.c (hppa_legitimize_address): Likewise.
* config/rs6000/rs6000.c (stmw_operation,
branch_comparison_operator, trap_comparison_operator,
ccr_bit): Likewise.
* config/rs6000/rs6000.h (SELECT_CC_MODE): Likewise.
* config/s390/s390.c (s390_alc_comparison,
s390_slb_comparison):L Likewise.
* config/sh/sh.c (gen_block_redirect, reg_unused_after):
Likewise.
* config/sparc/sparc.c (eq_or_neq, normal_comp_operator,
noov_compare_op, noov_compare64_op, v9_regcmp_op,
emit_hard_tfmode_operation, reg_unused_after)
* doc/md.texi, doc/rtl.texi: Likewise.
* ra-debug.c: Add 2004 to list of copyright years.
* unroll.c: Likewise.
* combine.c (simplify_logical): Remove dummy test,
(apply_distributive_law): Fix typo in comment.
GET_CODE (x) == AND so x is a commutative binary op.
* jump.c (delete_related_insns): simplify loop
condition, move testing of RTX codes inside the loop.
(rtx_renumbered_equal_p): do not use RTX_CODE.
* rtl.c (rtx_class): Declare as enum rtx_class.
* rtl.def (EQ, NE, UNEQ, LTGT, UNORDERED, ORDERED):
Move to RTX_COMM_COMPARE class.
(HIGH, SYMBOL_REF, LABEL_REF, CONST, CONST_INT, CONST_DOUBLE):
Move to RTX_CONST_OBJ class.
* rtl.h (enum rtx_class): New declaration,
(RTX_OBJ_MASK, RTX_OBJ_RESULT, RTX_COMPARE_MASK,
RTX_COMPARE_RESULT, RTX_ARITHMETIC_MASK, RTX_ARITHMETIC_RESULT,
RTX_BINARY_MASK, RTX_BINARY_RESULT, RTX_COMMUTATIVE_MASK,
RTX_COMMUTATIVE_RESULT, RTX_NON_COMMUTATIVE_RESULT,
RTX_EXPR_FIRST, RTX_EXPR_LAST, UNARY_P, BINARY_P,
ARITHMETIC_P, COMMUTATIVE_ARITHMETIC_P, COMPARISON_P,
SWAPPABLE_OPERANDS_P, NON_COMMUTATIVE_P, COMMUTATIVE_P,
OBJECT_P): New macros.
* config/sparc/sparc.c (noov_compare_op): Remove register
from parameter.
From-SVN: r78824
2004-03-03 09:35:33 +01:00
|
|
|
if (!COMPARISON_P (exp))
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
return;
|
|
|
|
|
|
|
|
/* If some register gets altered later, we do not really speak about its
|
|
|
|
value at the time of comparison. */
|
|
|
|
if (altered
|
|
|
|
&& for_each_rtx (&cond, altered_reg_used, altered))
|
|
|
|
return;
|
|
|
|
|
|
|
|
rev = reversed_condition (cond);
|
|
|
|
reve = reversed_condition (exp);
|
|
|
|
|
|
|
|
cond = canon_condition (cond);
|
|
|
|
exp = canon_condition (exp);
|
|
|
|
if (rev)
|
|
|
|
rev = canon_condition (rev);
|
|
|
|
if (reve)
|
|
|
|
reve = canon_condition (reve);
|
|
|
|
|
|
|
|
if (rtx_equal_p (exp, cond))
|
|
|
|
{
|
|
|
|
*expr = const_true_rtx;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (rev && rtx_equal_p (exp, rev))
|
|
|
|
{
|
|
|
|
*expr = const0_rtx;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (implies_p (cond, exp))
|
|
|
|
{
|
|
|
|
*expr = const_true_rtx;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (reve && implies_p (cond, reve))
|
|
|
|
{
|
|
|
|
*expr = const0_rtx;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* A proof by contradiction. If *EXPR implies (not cond), *EXPR must
|
|
|
|
be false. */
|
|
|
|
if (rev && implies_p (exp, rev))
|
|
|
|
{
|
|
|
|
*expr = const0_rtx;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Similarly, If (not *EXPR) implies (not cond), *EXPR must be true. */
|
|
|
|
if (rev && reve && implies_p (reve, rev))
|
|
|
|
{
|
|
|
|
*expr = const_true_rtx;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* We would like to have some other tests here. TODO. */
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Use relationship between A and *B to eventually eliminate *B.
|
|
|
|
OP is the operation we consider. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
eliminate_implied_condition (enum rtx_code op, rtx a, rtx *b)
|
|
|
|
{
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
if (op == AND)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
|
|
|
/* If A implies *B, we may replace *B by true. */
|
|
|
|
if (implies_p (a, *b))
|
|
|
|
*b = const_true_rtx;
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
}
|
|
|
|
else if (op == IOR)
|
|
|
|
{
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
/* If *B implies A, we may replace *B by false. */
|
|
|
|
if (implies_p (*b, a))
|
|
|
|
*b = const0_rtx;
|
|
|
|
}
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
else
|
|
|
|
abort ();
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Eliminates the conditions in TAIL that are implied by HEAD. OP is the
|
|
|
|
operation we consider. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
eliminate_implied_conditions (enum rtx_code op, rtx *head, rtx tail)
|
|
|
|
{
|
|
|
|
rtx elt;
|
|
|
|
|
|
|
|
for (elt = tail; elt; elt = XEXP (elt, 1))
|
|
|
|
eliminate_implied_condition (op, *head, &XEXP (elt, 0));
|
|
|
|
for (elt = tail; elt; elt = XEXP (elt, 1))
|
|
|
|
eliminate_implied_condition (op, XEXP (elt, 0), head);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Simplifies *EXPR using initial values at the start of the LOOP. If *EXPR
|
|
|
|
is a list, its elements are assumed to be combined using OP. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
simplify_using_initial_values (struct loop *loop, enum rtx_code op, rtx *expr)
|
|
|
|
{
|
|
|
|
rtx head, tail, insn;
|
|
|
|
rtx neutral, aggr;
|
|
|
|
regset altered;
|
|
|
|
regset_head altered_head;
|
|
|
|
edge e;
|
|
|
|
|
|
|
|
if (!*expr)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (CONSTANT_P (*expr))
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (GET_CODE (*expr) == EXPR_LIST)
|
|
|
|
{
|
|
|
|
head = XEXP (*expr, 0);
|
|
|
|
tail = XEXP (*expr, 1);
|
|
|
|
|
|
|
|
eliminate_implied_conditions (op, &head, tail);
|
|
|
|
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
if (op == AND)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
|
|
|
neutral = const_true_rtx;
|
|
|
|
aggr = const0_rtx;
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
}
|
|
|
|
else if (op == IOR)
|
|
|
|
{
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
neutral = const0_rtx;
|
|
|
|
aggr = const_true_rtx;
|
|
|
|
}
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
else
|
|
|
|
abort ();
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
simplify_using_initial_values (loop, UNKNOWN, &head);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
if (head == aggr)
|
|
|
|
{
|
|
|
|
XEXP (*expr, 0) = aggr;
|
|
|
|
XEXP (*expr, 1) = NULL_RTX;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
else if (head == neutral)
|
|
|
|
{
|
|
|
|
*expr = tail;
|
|
|
|
simplify_using_initial_values (loop, op, expr);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
simplify_using_initial_values (loop, op, &tail);
|
|
|
|
|
|
|
|
if (tail && XEXP (tail, 0) == aggr)
|
|
|
|
{
|
|
|
|
*expr = tail;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
XEXP (*expr, 0) = head;
|
|
|
|
XEXP (*expr, 1) = tail;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
if (op != UNKNOWN)
|
|
|
|
abort ();
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
e = loop_preheader_edge (loop);
|
|
|
|
if (e->src == ENTRY_BLOCK_PTR)
|
|
|
|
return;
|
|
|
|
|
|
|
|
altered = INITIALIZE_REG_SET (altered_head);
|
|
|
|
|
|
|
|
while (1)
|
|
|
|
{
|
|
|
|
insn = BB_END (e->src);
|
|
|
|
if (any_condjump_p (insn))
|
|
|
|
{
|
2004-07-27 09:27:12 +02:00
|
|
|
rtx cond = get_condition (BB_END (e->src), NULL, false, true);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
if (cond && (e->flags & EDGE_FALLTHRU))
|
|
|
|
cond = reversed_condition (cond);
|
|
|
|
if (cond)
|
|
|
|
{
|
|
|
|
simplify_using_condition (cond, expr, altered);
|
|
|
|
if (CONSTANT_P (*expr))
|
|
|
|
{
|
|
|
|
FREE_REG_SET (altered);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
FOR_BB_INSNS_REVERSE (e->src, insn)
|
|
|
|
{
|
|
|
|
if (!INSN_P (insn))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
simplify_using_assignment (insn, expr, altered);
|
|
|
|
if (CONSTANT_P (*expr))
|
|
|
|
{
|
|
|
|
FREE_REG_SET (altered);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
e = e->src->pred;
|
|
|
|
if (e->pred_next
|
|
|
|
|| e->src == ENTRY_BLOCK_PTR)
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
FREE_REG_SET (altered);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Transforms invariant IV into MODE. Adds assumptions based on the fact
|
|
|
|
that IV occurs as left operands of comparison COND and its signedness
|
|
|
|
is SIGNED_P to DESC. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
shorten_into_mode (struct rtx_iv *iv, enum machine_mode mode,
|
|
|
|
enum rtx_code cond, bool signed_p, struct niter_desc *desc)
|
|
|
|
{
|
|
|
|
rtx mmin, mmax, cond_over, cond_under;
|
|
|
|
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
get_mode_bounds (mode, signed_p, iv->extend_mode, &mmin, &mmax);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
cond_under = simplify_gen_relational (LT, SImode, iv->extend_mode,
|
|
|
|
iv->base, mmin);
|
|
|
|
cond_over = simplify_gen_relational (GT, SImode, iv->extend_mode,
|
|
|
|
iv->base, mmax);
|
|
|
|
|
|
|
|
switch (cond)
|
|
|
|
{
|
|
|
|
case LE:
|
|
|
|
case LT:
|
|
|
|
case LEU:
|
|
|
|
case LTU:
|
|
|
|
if (cond_under != const0_rtx)
|
|
|
|
desc->infinite =
|
|
|
|
alloc_EXPR_LIST (0, cond_under, desc->infinite);
|
|
|
|
if (cond_over != const0_rtx)
|
|
|
|
desc->noloop_assumptions =
|
|
|
|
alloc_EXPR_LIST (0, cond_over, desc->noloop_assumptions);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case GE:
|
|
|
|
case GT:
|
|
|
|
case GEU:
|
|
|
|
case GTU:
|
|
|
|
if (cond_over != const0_rtx)
|
|
|
|
desc->infinite =
|
|
|
|
alloc_EXPR_LIST (0, cond_over, desc->infinite);
|
|
|
|
if (cond_under != const0_rtx)
|
|
|
|
desc->noloop_assumptions =
|
|
|
|
alloc_EXPR_LIST (0, cond_under, desc->noloop_assumptions);
|
|
|
|
break;
|
|
|
|
|
|
|
|
case NE:
|
|
|
|
if (cond_over != const0_rtx)
|
|
|
|
desc->infinite =
|
|
|
|
alloc_EXPR_LIST (0, cond_over, desc->infinite);
|
|
|
|
if (cond_under != const0_rtx)
|
|
|
|
desc->infinite =
|
|
|
|
alloc_EXPR_LIST (0, cond_under, desc->infinite);
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
abort ();
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
iv->mode = mode;
|
|
|
|
iv->extend = signed_p ? SIGN_EXTEND : ZERO_EXTEND;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Transforms IV0 and IV1 compared by COND so that they are both compared as
|
c-decl.c, [...]: Fix comment typos and formatting.
* c-decl.c, c-ppoutput.c, combine.c, cppfiles.c, dwarf2out.c,
expr.c, fold-const.c, gcc.c, haifa-sched.c, loop-iv.c,
params.def, read-rtl.c, rtl.c, rtlanal.c, toplev.c: Fix
comment typos and formatting. Follow spelling conventions.
From-SVN: r78555
2004-02-27 08:09:43 +01:00
|
|
|
subregs of the same mode if possible (sometimes it is necessary to add
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
some assumptions to DESC). */
|
|
|
|
|
|
|
|
static bool
|
|
|
|
canonicalize_iv_subregs (struct rtx_iv *iv0, struct rtx_iv *iv1,
|
|
|
|
enum rtx_code cond, struct niter_desc *desc)
|
|
|
|
{
|
|
|
|
enum machine_mode comp_mode;
|
|
|
|
bool signed_p;
|
|
|
|
|
|
|
|
/* If the ivs behave specially in the first iteration, or are
|
|
|
|
added/multiplied after extending, we ignore them. */
|
|
|
|
if (iv0->first_special || iv0->mult != const1_rtx || iv0->delta != const0_rtx)
|
|
|
|
return false;
|
|
|
|
if (iv1->first_special || iv1->mult != const1_rtx || iv1->delta != const0_rtx)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
/* If there is some extend, it must match signedness of the comparison. */
|
|
|
|
switch (cond)
|
|
|
|
{
|
|
|
|
case LE:
|
|
|
|
case LT:
|
|
|
|
if (iv0->extend == ZERO_EXTEND
|
|
|
|
|| iv1->extend == ZERO_EXTEND)
|
|
|
|
return false;
|
|
|
|
signed_p = true;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case LEU:
|
|
|
|
case LTU:
|
|
|
|
if (iv0->extend == SIGN_EXTEND
|
|
|
|
|| iv1->extend == SIGN_EXTEND)
|
|
|
|
return false;
|
|
|
|
signed_p = false;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case NE:
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
if (iv0->extend != UNKNOWN
|
|
|
|
&& iv1->extend != UNKNOWN
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
&& iv0->extend != iv1->extend)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
signed_p = false;
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
if (iv0->extend != UNKNOWN)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
signed_p = iv0->extend == SIGN_EXTEND;
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
if (iv1->extend != UNKNOWN)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
signed_p = iv1->extend == SIGN_EXTEND;
|
|
|
|
break;
|
|
|
|
|
|
|
|
default:
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
abort ();
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Values of both variables should be computed in the same mode. These
|
|
|
|
might indeed be different, if we have comparison like
|
|
|
|
|
|
|
|
(compare (subreg:SI (iv0)) (subreg:SI (iv1)))
|
|
|
|
|
|
|
|
and iv0 and iv1 are both ivs iterating in SI mode, but calculated
|
|
|
|
in different modes. This does not seem impossible to handle, but
|
|
|
|
it hardly ever occurs in practice.
|
|
|
|
|
|
|
|
The only exception is the case when one of operands is invariant.
|
|
|
|
For example pentium 3 generates comparisons like
|
|
|
|
(lt (subreg:HI (reg:SI)) 100). Here we assign HImode to 100, but we
|
|
|
|
definitely do not want this prevent the optimization. */
|
|
|
|
comp_mode = iv0->extend_mode;
|
|
|
|
if (GET_MODE_BITSIZE (comp_mode) < GET_MODE_BITSIZE (iv1->extend_mode))
|
|
|
|
comp_mode = iv1->extend_mode;
|
|
|
|
|
|
|
|
if (iv0->extend_mode != comp_mode)
|
|
|
|
{
|
|
|
|
if (iv0->mode != iv0->extend_mode
|
|
|
|
|| iv0->step != const0_rtx)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
iv0->base = simplify_gen_unary (signed_p ? SIGN_EXTEND : ZERO_EXTEND,
|
|
|
|
comp_mode, iv0->base, iv0->mode);
|
|
|
|
iv0->extend_mode = comp_mode;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (iv1->extend_mode != comp_mode)
|
|
|
|
{
|
|
|
|
if (iv1->mode != iv1->extend_mode
|
|
|
|
|| iv1->step != const0_rtx)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
iv1->base = simplify_gen_unary (signed_p ? SIGN_EXTEND : ZERO_EXTEND,
|
|
|
|
comp_mode, iv1->base, iv1->mode);
|
|
|
|
iv1->extend_mode = comp_mode;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check that both ivs belong to a range of a single mode. If one of the
|
|
|
|
operands is an invariant, we may need to shorten it into the common
|
|
|
|
mode. */
|
|
|
|
if (iv0->mode == iv0->extend_mode
|
|
|
|
&& iv0->step == const0_rtx
|
|
|
|
&& iv0->mode != iv1->mode)
|
|
|
|
shorten_into_mode (iv0, iv1->mode, cond, signed_p, desc);
|
|
|
|
|
|
|
|
if (iv1->mode == iv1->extend_mode
|
|
|
|
&& iv1->step == const0_rtx
|
|
|
|
&& iv0->mode != iv1->mode)
|
|
|
|
shorten_into_mode (iv1, iv0->mode, swap_condition (cond), signed_p, desc);
|
|
|
|
|
|
|
|
if (iv0->mode != iv1->mode)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
desc->mode = iv0->mode;
|
|
|
|
desc->signed_p = signed_p;
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Computes number of iterations of the CONDITION in INSN in LOOP and stores
|
|
|
|
the result into DESC. Very similar to determine_number_of_iterations
|
|
|
|
(basically its rtl version), complicated by things like subregs. */
|
|
|
|
|
|
|
|
void
|
|
|
|
iv_number_of_iterations (struct loop *loop, rtx insn, rtx condition,
|
|
|
|
struct niter_desc *desc)
|
|
|
|
{
|
|
|
|
rtx op0, op1, delta, step, bound, may_xform, def_insn, tmp, tmp0, tmp1;
|
|
|
|
struct rtx_iv iv0, iv1, tmp_iv;
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
rtx assumption, may_not_xform;
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
enum rtx_code cond;
|
|
|
|
enum machine_mode mode, comp_mode;
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
rtx mmin, mmax, mode_mmin, mode_mmax;
|
|
|
|
unsigned HOST_WIDEST_INT s, size, d, inv;
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
HOST_WIDEST_INT up, down, inc;
|
|
|
|
int was_sharp = false;
|
2004-07-11 04:52:54 +02:00
|
|
|
rtx old_niter;
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
/* The meaning of these assumptions is this:
|
|
|
|
if !assumptions
|
|
|
|
then the rest of information does not have to be valid
|
|
|
|
if noloop_assumptions then the loop does not roll
|
|
|
|
if infinite then this exit is never used */
|
|
|
|
|
|
|
|
desc->assumptions = NULL_RTX;
|
|
|
|
desc->noloop_assumptions = NULL_RTX;
|
|
|
|
desc->infinite = NULL_RTX;
|
|
|
|
desc->simple_p = true;
|
|
|
|
|
|
|
|
desc->const_iter = false;
|
|
|
|
desc->niter_expr = NULL_RTX;
|
|
|
|
desc->niter_max = 0;
|
|
|
|
|
|
|
|
cond = GET_CODE (condition);
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
if (!COMPARISON_P (condition))
|
|
|
|
abort ();
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
mode = GET_MODE (XEXP (condition, 0));
|
|
|
|
if (mode == VOIDmode)
|
|
|
|
mode = GET_MODE (XEXP (condition, 1));
|
|
|
|
/* The constant comparisons should be folded. */
|
Revert 2004-09-09 Giovanni Bajo <giovannibajo@gcc.gnu.org>
* lambda-mat.c (lambda_matrix_inverse_hard): Use gcc_assert
and gcc_unreachable instead of abort.
* lambda.h (lambda_vector_min_nz): Likewise.
* langhooks.c lhd_set_decl_assembler_name, lhd_can_use_bit_fields_p,
lhd_incomplete_type_error, lhd_expand_expr, lhd_types_compatible_p,
lhd_gimplify_expr): Likewise.
* lcm.c (optimize_mode_switching): Likewise.
* local-alloc.c (update_equiv_regs, block_alloc, find_free_reg):
Likewise.
* loop-doloop.c (doloop_modify): Likewise.
* loop-invariant.c (record_use): Likewise.
* loop-iv.c (get_biv_step_1, get_biv_step, iv_analyze, get_iv_value,
canon_condition, simplify_using_condition,
simplify_using_initial_values, shorten_into_mode,
canonicalize_iv_subregs, iv_number_of_iterations): Likewise.
* loop-unroll.c (unroll_and_peel_loops, peel_loop_completely,
unroll_loop_constant_iterations, unroll_loop_runtime_iterations,
peel_loop_simple, unroll_loop_stupid): Likewise.
* loop-unswitch.c (compare_and_jump_seq, unswitch_single_loop,
unswitch_loop): Likewise.
* loop.c (gen_prefetch, loop_optimize, rtx_equal_for_loop_p,
move_movables, replace_call_address, find_and_verify_loops,
rtx_equal_for_prefetch_p, record_giv, general_induction_var,
simplify_giv_expr, check_ext_dependent_givs, try_copy_prop,
loop_giv_dump): Likewise.
* loop.h (INSN_LUID): Likewise.
* modulo-sched.c (normalize_sched_times, generate_prolog_epilog,
sms_schedule, check_nodes_order): Likewise.
* optabs.c (gen_conditional, add_equal_note, expand_simple_binop,
expand_twoval_unop, expand_twoval_binop, expand_twoval_binop_libfunc,
expand_simple_unop, emit_no_conflict_block, prepare_cmp_insn,
emit_cmp_and_jump_insn_1, emit_cmp_and_jump_insns,
prepare_float_lib_cmp, gen_add2_insn, have_add2_insn, gen_sub2_insn,
have_sub2_insn, expand_float, expand_fix, debug_optab_libfuncs):
Likewise.
* opts.c (common_handle_option): Likewise.
* params.c (set_param_value): Likewise.
* passes.c (open_dump_file, rest_of_handle_final): Likewise.
* postreload-gcse.c (expr_equiv_p, oprs_unchanged_p,hash_scan_set,
reg_set_between_after_reload_p, reg_used_between_after_reload_p,
get_avail_load_store_reg, eliminate_partially_redundant_load):
Likewise.
* postreload.c (reload_cse_simplify_set, reload_combine_note_use):
Likewise.
* predict.c (tree_predicted_by_p, expected_value_to_br_prob,
propagate_freq, expensive_function_p): Likewise.
* pretty-print.c (pp_base_format_text)
* profile.c (instrument_edges, instrument_values,
compute_branch_probabilities, branch_prob, union_groups,
end_branch_prob, tree_register_profile_hooks): Likewise.
From-SVN: r87290
2004-09-10 13:02:26 +02:00
|
|
|
if (mode == VOIDmode)
|
|
|
|
abort ();
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
/* We only handle integers or pointers. */
|
|
|
|
if (GET_MODE_CLASS (mode) != MODE_INT
|
|
|
|
&& GET_MODE_CLASS (mode) != MODE_PARTIAL_INT)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
op0 = XEXP (condition, 0);
|
|
|
|
def_insn = iv_get_reaching_def (insn, op0);
|
2004-02-24 04:43:59 +01:00
|
|
|
if (!iv_analyze (def_insn, op0, &iv0))
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
goto fail;
|
|
|
|
if (iv0.extend_mode == VOIDmode)
|
|
|
|
iv0.mode = iv0.extend_mode = mode;
|
|
|
|
|
|
|
|
op1 = XEXP (condition, 1);
|
|
|
|
def_insn = iv_get_reaching_def (insn, op1);
|
2004-02-24 04:43:59 +01:00
|
|
|
if (!iv_analyze (def_insn, op1, &iv1))
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
goto fail;
|
|
|
|
if (iv1.extend_mode == VOIDmode)
|
|
|
|
iv1.mode = iv1.extend_mode = mode;
|
|
|
|
|
|
|
|
if (GET_MODE_BITSIZE (iv0.extend_mode) > HOST_BITS_PER_WIDE_INT
|
|
|
|
|| GET_MODE_BITSIZE (iv1.extend_mode) > HOST_BITS_PER_WIDE_INT)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
/* Check condition and normalize it. */
|
|
|
|
|
|
|
|
switch (cond)
|
|
|
|
{
|
|
|
|
case GE:
|
|
|
|
case GT:
|
|
|
|
case GEU:
|
|
|
|
case GTU:
|
|
|
|
tmp_iv = iv0; iv0 = iv1; iv1 = tmp_iv;
|
|
|
|
cond = swap_condition (cond);
|
|
|
|
break;
|
|
|
|
case NE:
|
|
|
|
case LE:
|
|
|
|
case LEU:
|
|
|
|
case LT:
|
|
|
|
case LTU:
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Handle extends. This is relatively nontrivial, so we only try in some
|
|
|
|
easy cases, when we can canonicalize the ivs (possibly by adding some
|
|
|
|
assumptions) to shape subreg (base + i * step). This function also fills
|
|
|
|
in desc->mode and desc->signed_p. */
|
|
|
|
|
|
|
|
if (!canonicalize_iv_subregs (&iv0, &iv1, cond, desc))
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
comp_mode = iv0.extend_mode;
|
|
|
|
mode = iv0.mode;
|
|
|
|
size = GET_MODE_BITSIZE (mode);
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
get_mode_bounds (mode, (cond == LE || cond == LT), comp_mode, &mmin, &mmax);
|
|
|
|
mode_mmin = lowpart_subreg (mode, mmin, comp_mode);
|
|
|
|
mode_mmax = lowpart_subreg (mode, mmax, comp_mode);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
if (GET_CODE (iv0.step) != CONST_INT || GET_CODE (iv1.step) != CONST_INT)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
/* We can take care of the case of two induction variables chasing each other
|
|
|
|
if the test is NE. I have never seen a loop using it, but still it is
|
|
|
|
cool. */
|
|
|
|
if (iv0.step != const0_rtx && iv1.step != const0_rtx)
|
|
|
|
{
|
|
|
|
if (cond != NE)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
iv0.step = simplify_gen_binary (MINUS, comp_mode, iv0.step, iv1.step);
|
|
|
|
iv1.step = const0_rtx;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* This is either infinite loop or the one that ends immediately, depending
|
|
|
|
on initial values. Unswitching should remove this kind of conditions. */
|
|
|
|
if (iv0.step == const0_rtx && iv1.step == const0_rtx)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
/* Ignore loops of while (i-- < 10) type. */
|
|
|
|
if (cond != NE
|
|
|
|
&& (INTVAL (iv0.step) < 0 || INTVAL (iv1.step) > 0))
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
/* Some more condition normalization. We must record some assumptions
|
|
|
|
due to overflows. */
|
|
|
|
switch (cond)
|
|
|
|
{
|
|
|
|
case LT:
|
|
|
|
case LTU:
|
|
|
|
/* We want to take care only of non-sharp relationals; this is easy,
|
|
|
|
as in cases the overflow would make the transformation unsafe
|
|
|
|
the loop does not roll. Seemingly it would make more sense to want
|
|
|
|
to take care of sharp relationals instead, as NE is more similar to
|
|
|
|
them, but the problem is that here the transformation would be more
|
|
|
|
difficult due to possibly infinite loops. */
|
|
|
|
if (iv0.step == const0_rtx)
|
|
|
|
{
|
|
|
|
tmp = lowpart_subreg (mode, iv0.base, comp_mode);
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
assumption = simplify_gen_relational (EQ, SImode, mode, tmp,
|
|
|
|
mode_mmax);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
if (assumption == const_true_rtx)
|
|
|
|
goto zero_iter;
|
|
|
|
iv0.base = simplify_gen_binary (PLUS, comp_mode,
|
|
|
|
iv0.base, const1_rtx);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
tmp = lowpart_subreg (mode, iv1.base, comp_mode);
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
assumption = simplify_gen_relational (EQ, SImode, mode, tmp,
|
|
|
|
mode_mmin);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
if (assumption == const_true_rtx)
|
|
|
|
goto zero_iter;
|
|
|
|
iv1.base = simplify_gen_binary (PLUS, comp_mode,
|
|
|
|
iv1.base, constm1_rtx);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (assumption != const0_rtx)
|
|
|
|
desc->noloop_assumptions =
|
|
|
|
alloc_EXPR_LIST (0, assumption, desc->noloop_assumptions);
|
|
|
|
cond = (cond == LT) ? LE : LEU;
|
|
|
|
|
|
|
|
/* It will be useful to be able to tell the difference once more in
|
|
|
|
LE -> NE reduction. */
|
|
|
|
was_sharp = true;
|
|
|
|
break;
|
|
|
|
default: ;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Take care of trivially infinite loops. */
|
|
|
|
if (cond != NE)
|
|
|
|
{
|
|
|
|
if (iv0.step == const0_rtx)
|
|
|
|
{
|
|
|
|
tmp = lowpart_subreg (mode, iv0.base, comp_mode);
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
if (rtx_equal_p (tmp, mode_mmin))
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
|
|
|
desc->infinite =
|
|
|
|
alloc_EXPR_LIST (0, const_true_rtx, NULL_RTX);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
tmp = lowpart_subreg (mode, iv1.base, comp_mode);
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
if (rtx_equal_p (tmp, mode_mmax))
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
|
|
|
desc->infinite =
|
|
|
|
alloc_EXPR_LIST (0, const_true_rtx, NULL_RTX);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* If we can we want to take care of NE conditions instead of size
|
|
|
|
comparisons, as they are much more friendly (most importantly
|
|
|
|
this takes care of special handling of loops with step 1). We can
|
|
|
|
do it if we first check that upper bound is greater or equal to
|
|
|
|
lower bound, their difference is constant c modulo step and that
|
|
|
|
there is not an overflow. */
|
|
|
|
if (cond != NE)
|
|
|
|
{
|
|
|
|
if (iv0.step == const0_rtx)
|
|
|
|
step = simplify_gen_unary (NEG, comp_mode, iv1.step, comp_mode);
|
|
|
|
else
|
|
|
|
step = iv0.step;
|
|
|
|
delta = simplify_gen_binary (MINUS, comp_mode, iv1.base, iv0.base);
|
|
|
|
delta = lowpart_subreg (mode, delta, comp_mode);
|
|
|
|
delta = simplify_gen_binary (UMOD, mode, delta, step);
|
|
|
|
may_xform = const0_rtx;
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
may_not_xform = const_true_rtx;
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
if (GET_CODE (delta) == CONST_INT)
|
|
|
|
{
|
|
|
|
if (was_sharp && INTVAL (delta) == INTVAL (step) - 1)
|
|
|
|
{
|
|
|
|
/* A special case. We have transformed condition of type
|
|
|
|
for (i = 0; i < 4; i += 4)
|
|
|
|
into
|
|
|
|
for (i = 0; i <= 3; i += 4)
|
|
|
|
obviously if the test for overflow during that transformation
|
|
|
|
passed, we cannot overflow here. Most importantly any
|
|
|
|
loop with sharp end condition and step 1 falls into this
|
c-decl.c, [...]: Fix comment typos and formatting.
* c-decl.c, c-ppoutput.c, combine.c, cppfiles.c, dwarf2out.c,
expr.c, fold-const.c, gcc.c, haifa-sched.c, loop-iv.c,
params.def, read-rtl.c, rtl.c, rtlanal.c, toplev.c: Fix
comment typos and formatting. Follow spelling conventions.
From-SVN: r78555
2004-02-27 08:09:43 +01:00
|
|
|
category, so handling this case specially is definitely
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
worth the troubles. */
|
|
|
|
may_xform = const_true_rtx;
|
|
|
|
}
|
|
|
|
else if (iv0.step == const0_rtx)
|
|
|
|
{
|
|
|
|
bound = simplify_gen_binary (PLUS, comp_mode, mmin, step);
|
|
|
|
bound = simplify_gen_binary (MINUS, comp_mode, bound, delta);
|
|
|
|
bound = lowpart_subreg (mode, bound, comp_mode);
|
|
|
|
tmp = lowpart_subreg (mode, iv0.base, comp_mode);
|
|
|
|
may_xform = simplify_gen_relational (cond, SImode, mode,
|
|
|
|
bound, tmp);
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
may_not_xform = simplify_gen_relational (reverse_condition (cond),
|
|
|
|
SImode, mode,
|
|
|
|
bound, tmp);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
bound = simplify_gen_binary (MINUS, comp_mode, mmax, step);
|
|
|
|
bound = simplify_gen_binary (PLUS, comp_mode, bound, delta);
|
|
|
|
bound = lowpart_subreg (mode, bound, comp_mode);
|
|
|
|
tmp = lowpart_subreg (mode, iv1.base, comp_mode);
|
|
|
|
may_xform = simplify_gen_relational (cond, SImode, mode,
|
|
|
|
tmp, bound);
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
may_not_xform = simplify_gen_relational (reverse_condition (cond),
|
|
|
|
SImode, mode,
|
|
|
|
tmp, bound);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (may_xform != const0_rtx)
|
|
|
|
{
|
|
|
|
/* We perform the transformation always provided that it is not
|
|
|
|
completely senseless. This is OK, as we would need this assumption
|
|
|
|
to determine the number of iterations anyway. */
|
|
|
|
if (may_xform != const_true_rtx)
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
{
|
|
|
|
/* If the step is a power of two and the final value we have
|
|
|
|
computed overflows, the cycle is infinite. Otherwise it
|
|
|
|
is nontrivial to compute the number of iterations. */
|
|
|
|
s = INTVAL (step);
|
|
|
|
if ((s & (s - 1)) == 0)
|
|
|
|
desc->infinite = alloc_EXPR_LIST (0, may_not_xform,
|
|
|
|
desc->infinite);
|
|
|
|
else
|
|
|
|
desc->assumptions = alloc_EXPR_LIST (0, may_xform,
|
|
|
|
desc->assumptions);
|
|
|
|
}
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
/* We are going to lose some information about upper bound on
|
|
|
|
number of iterations in this step, so record the information
|
|
|
|
here. */
|
|
|
|
inc = INTVAL (iv0.step) - INTVAL (iv1.step);
|
|
|
|
if (GET_CODE (iv1.base) == CONST_INT)
|
|
|
|
up = INTVAL (iv1.base);
|
|
|
|
else
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
up = INTVAL (mode_mmax) - inc;
|
|
|
|
down = INTVAL (GET_CODE (iv0.base) == CONST_INT
|
|
|
|
? iv0.base
|
|
|
|
: mode_mmin);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
desc->niter_max = (up - down) / inc + 1;
|
|
|
|
|
|
|
|
if (iv0.step == const0_rtx)
|
|
|
|
{
|
|
|
|
iv0.base = simplify_gen_binary (PLUS, comp_mode, iv0.base, delta);
|
|
|
|
iv0.base = simplify_gen_binary (MINUS, comp_mode, iv0.base, step);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
iv1.base = simplify_gen_binary (MINUS, comp_mode, iv1.base, delta);
|
|
|
|
iv1.base = simplify_gen_binary (PLUS, comp_mode, iv1.base, step);
|
|
|
|
}
|
|
|
|
|
|
|
|
tmp0 = lowpart_subreg (mode, iv0.base, comp_mode);
|
|
|
|
tmp1 = lowpart_subreg (mode, iv1.base, comp_mode);
|
|
|
|
assumption = simplify_gen_relational (reverse_condition (cond),
|
|
|
|
SImode, mode, tmp0, tmp1);
|
|
|
|
if (assumption == const_true_rtx)
|
|
|
|
goto zero_iter;
|
|
|
|
else if (assumption != const0_rtx)
|
|
|
|
desc->noloop_assumptions =
|
|
|
|
alloc_EXPR_LIST (0, assumption, desc->noloop_assumptions);
|
|
|
|
cond = NE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Count the number of iterations. */
|
|
|
|
if (cond == NE)
|
|
|
|
{
|
|
|
|
/* Everything we do here is just arithmetics modulo size of mode. This
|
|
|
|
makes us able to do more involved computations of number of iterations
|
|
|
|
than in other cases. First transform the condition into shape
|
|
|
|
s * i <> c, with s positive. */
|
|
|
|
iv1.base = simplify_gen_binary (MINUS, comp_mode, iv1.base, iv0.base);
|
|
|
|
iv0.base = const0_rtx;
|
|
|
|
iv0.step = simplify_gen_binary (MINUS, comp_mode, iv0.step, iv1.step);
|
|
|
|
iv1.step = const0_rtx;
|
|
|
|
if (INTVAL (iv0.step) < 0)
|
|
|
|
{
|
|
|
|
iv0.step = simplify_gen_unary (NEG, comp_mode, iv0.step, mode);
|
|
|
|
iv1.base = simplify_gen_unary (NEG, comp_mode, iv1.base, mode);
|
|
|
|
}
|
|
|
|
iv0.step = lowpart_subreg (mode, iv0.step, comp_mode);
|
|
|
|
|
|
|
|
/* Let nsd (s, size of mode) = d. If d does not divide c, the loop
|
|
|
|
is infinite. Otherwise, the number of iterations is
|
|
|
|
(inverse(s/d) * (c/d)) mod (size of mode/d). */
|
|
|
|
s = INTVAL (iv0.step); d = 1;
|
|
|
|
while (s % 2 != 1)
|
|
|
|
{
|
|
|
|
s /= 2;
|
|
|
|
d *= 2;
|
|
|
|
size--;
|
|
|
|
}
|
|
|
|
bound = GEN_INT (((unsigned HOST_WIDEST_INT) 1 << (size - 1 ) << 1) - 1);
|
|
|
|
|
|
|
|
tmp1 = lowpart_subreg (mode, iv1.base, comp_mode);
|
|
|
|
tmp = simplify_gen_binary (UMOD, mode, tmp1, GEN_INT (d));
|
|
|
|
assumption = simplify_gen_relational (NE, SImode, mode, tmp, const0_rtx);
|
|
|
|
desc->infinite = alloc_EXPR_LIST (0, assumption, desc->infinite);
|
|
|
|
|
|
|
|
tmp = simplify_gen_binary (UDIV, mode, tmp1, GEN_INT (d));
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
inv = inverse (s, size);
|
|
|
|
inv = trunc_int_for_mode (inv, mode);
|
|
|
|
tmp = simplify_gen_binary (MULT, mode, tmp, GEN_INT (inv));
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
desc->niter_expr = simplify_gen_binary (AND, mode, tmp, bound);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
if (iv1.step == const0_rtx)
|
|
|
|
/* Condition in shape a + s * i <= b
|
|
|
|
We must know that b + s does not overflow and a <= b + s and then we
|
|
|
|
can compute number of iterations as (b + s - a) / s. (It might
|
|
|
|
seem that we in fact could be more clever about testing the b + s
|
|
|
|
overflow condition using some information about b - a mod s,
|
|
|
|
but it was already taken into account during LE -> NE transform). */
|
|
|
|
{
|
|
|
|
step = iv0.step;
|
|
|
|
tmp0 = lowpart_subreg (mode, iv0.base, comp_mode);
|
|
|
|
tmp1 = lowpart_subreg (mode, iv1.base, comp_mode);
|
|
|
|
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
bound = simplify_gen_binary (MINUS, mode, mode_mmax,
|
|
|
|
lowpart_subreg (mode, step, comp_mode));
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
assumption = simplify_gen_relational (cond, SImode, mode,
|
|
|
|
tmp1, bound);
|
|
|
|
desc->assumptions =
|
|
|
|
alloc_EXPR_LIST (0, assumption, desc->assumptions);
|
|
|
|
|
|
|
|
tmp = simplify_gen_binary (PLUS, comp_mode, iv1.base, iv0.step);
|
|
|
|
tmp = lowpart_subreg (mode, tmp, comp_mode);
|
|
|
|
assumption = simplify_gen_relational (reverse_condition (cond),
|
|
|
|
SImode, mode, tmp0, tmp);
|
|
|
|
|
|
|
|
delta = simplify_gen_binary (PLUS, mode, tmp1, step);
|
|
|
|
delta = simplify_gen_binary (MINUS, mode, delta, tmp0);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* Condition in shape a <= b - s * i
|
|
|
|
We must know that a - s does not overflow and a - s <= b and then
|
|
|
|
we can again compute number of iterations as (b - (a - s)) / s. */
|
|
|
|
step = simplify_gen_unary (NEG, mode, iv1.step, mode);
|
|
|
|
tmp0 = lowpart_subreg (mode, iv0.base, comp_mode);
|
|
|
|
tmp1 = lowpart_subreg (mode, iv1.base, comp_mode);
|
|
|
|
|
Multiple fixes: PRs 14692, 15274 and 15463
PR c++/15463
* loop-iv.c (iv_number_of_iterations): Use trunc_int_for_mode on
result of inverse.
PR rtl-optimization/15274
* loop-iv.c (determine_max_iter, shorten_into_mode,
iv_number_of_iterations): Handle constants correctly.
* rtl.h (get_mode_bounds): Declaration changed.
* stor-layout.c (get_mode_bounds): Return a constant suitable for
the target mode.
PR rtl-optimization/14692
* loop-unswitch.c (may_unswitch_on): Try folding the result.
(unswitch_single_loop): Work correctly when may_unswitch_on
returns a folded constant.
* loop-iv.c (implies_p): Handle A < B ==> A + 1 <= B.
* simplify-rtx.c (simplify_const_relational_operation): Optimize
comparisons with mode bounds.
* function.c (struct temp_slot): Add new field prev.
(free_after_compilation, init_temp_slots): Free new fields.
(cut_slot_from_list, insert_slot_to_list,
temp_slots_at_level, max_slot_level, move_slot_to_level,
make_slot_available): New functions.
(assign_stack_temp_for_type, combine_temp_slots,
find_temp_slot_from_address, preserve_temp_slots,
preserve_rtl_expr_result, free_temp_slots,
free_temps_for_rtl_expr, pop_temp_slots): Work with
the new structure of lists.
(mark_all_temps_used): Removed.
* function.h (struct function): Field x_temp_slots
replaced by x_used_temp_slots and x_avail_temp_slots.
(temp_slots): Replaced by ...
(used_temp_slots, avail_temp_slots): New.
* tree.h (mark_all_temps_used): Declaration removed.
* loop-iv.c (mark_single_set, get_biv_step_1, iv_analyze,
simplify_using_assignment): Take the expression out of
the expr_list wrapper.
* loop-iv.c (iv_number_of_iterations): Improve clasification of
infinite loops.
From-SVN: r82028
2004-05-19 19:53:45 +02:00
|
|
|
bound = simplify_gen_binary (MINUS, mode, mode_mmin,
|
|
|
|
lowpart_subreg (mode, step, comp_mode));
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
assumption = simplify_gen_relational (cond, SImode, mode,
|
|
|
|
bound, tmp0);
|
|
|
|
desc->assumptions =
|
|
|
|
alloc_EXPR_LIST (0, assumption, desc->assumptions);
|
|
|
|
|
|
|
|
tmp = simplify_gen_binary (PLUS, comp_mode, iv0.base, iv1.step);
|
|
|
|
tmp = lowpart_subreg (mode, tmp, comp_mode);
|
|
|
|
assumption = simplify_gen_relational (reverse_condition (cond),
|
|
|
|
SImode, mode,
|
|
|
|
tmp, tmp1);
|
|
|
|
delta = simplify_gen_binary (MINUS, mode, tmp0, step);
|
|
|
|
delta = simplify_gen_binary (MINUS, mode, tmp1, delta);
|
|
|
|
}
|
|
|
|
if (assumption == const_true_rtx)
|
|
|
|
goto zero_iter;
|
|
|
|
else if (assumption != const0_rtx)
|
|
|
|
desc->noloop_assumptions =
|
|
|
|
alloc_EXPR_LIST (0, assumption, desc->noloop_assumptions);
|
|
|
|
delta = simplify_gen_binary (UDIV, mode, delta, step);
|
|
|
|
desc->niter_expr = delta;
|
|
|
|
}
|
|
|
|
|
2004-07-11 04:52:54 +02:00
|
|
|
old_niter = desc->niter_expr;
|
|
|
|
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
simplify_using_initial_values (loop, AND, &desc->assumptions);
|
|
|
|
if (desc->assumptions
|
|
|
|
&& XEXP (desc->assumptions, 0) == const0_rtx)
|
|
|
|
goto fail;
|
|
|
|
simplify_using_initial_values (loop, IOR, &desc->noloop_assumptions);
|
|
|
|
simplify_using_initial_values (loop, IOR, &desc->infinite);
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
simplify_using_initial_values (loop, UNKNOWN, &desc->niter_expr);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
/* Rerun the simplification. Consider code (created by copying loop headers)
|
|
|
|
|
|
|
|
i = 0;
|
|
|
|
|
|
|
|
if (0 < n)
|
|
|
|
{
|
|
|
|
do
|
|
|
|
{
|
|
|
|
i++;
|
|
|
|
} while (i < n);
|
|
|
|
}
|
|
|
|
|
|
|
|
The first pass determines that i = 0, the second pass uses it to eliminate
|
|
|
|
noloop assumption. */
|
|
|
|
|
|
|
|
simplify_using_initial_values (loop, AND, &desc->assumptions);
|
|
|
|
if (desc->assumptions
|
|
|
|
&& XEXP (desc->assumptions, 0) == const0_rtx)
|
|
|
|
goto fail;
|
|
|
|
simplify_using_initial_values (loop, IOR, &desc->noloop_assumptions);
|
|
|
|
simplify_using_initial_values (loop, IOR, &desc->infinite);
|
rtl.def (NIL): Delete.
* rtl.def (NIL): Delete.
* read-rtl.c (read_rtx): Handle (nil) like (define_constants).
Tighten the syntax a little.
* cfgloop.h, combine.c, cse.c, loop-iv.c, postreload.c, reload.c
* config/alpha/alpha.c, config/alpha/alpha.h, config/arc/arc.h
* config/arm/arm.h, config/frv/frv.h, config/i386/i386.c
* config/i386/predicates.md, config/m32r/m32r.h
* config/m68hc11/m68hc11.c, config/mcore/mcore.h, config/mips/mips.c
* config/mmix/mmix.c, config/pa/pa.h, config/sh/sh.h
* config/sparc/sparc.h, doc/tm.texi:
Replace all occurrences of NIL with UNKNOWN.
From-SVN: r86193
2004-08-18 19:05:14 +02:00
|
|
|
simplify_using_initial_values (loop, UNKNOWN, &desc->niter_expr);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
2004-03-18 17:42:34 +01:00
|
|
|
if (desc->noloop_assumptions
|
|
|
|
&& XEXP (desc->noloop_assumptions, 0) == const_true_rtx)
|
|
|
|
goto zero_iter;
|
|
|
|
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
if (GET_CODE (desc->niter_expr) == CONST_INT)
|
|
|
|
{
|
|
|
|
unsigned HOST_WIDEST_INT val = INTVAL (desc->niter_expr);
|
|
|
|
|
|
|
|
desc->const_iter = true;
|
|
|
|
desc->niter_max = desc->niter = val & GET_MODE_MASK (desc->mode);
|
|
|
|
}
|
2004-07-11 04:52:54 +02:00
|
|
|
else
|
|
|
|
{
|
|
|
|
if (!desc->niter_max)
|
|
|
|
desc->niter_max = determine_max_iter (desc);
|
|
|
|
|
|
|
|
/* simplify_using_initial_values does a copy propagation on the registers
|
|
|
|
in the expression for the number of iterations. This prolongs life
|
|
|
|
ranges of registers and increases register pressure, and usually
|
|
|
|
brings no gain (and if it happens to do, the cse pass will take care
|
|
|
|
of it anyway). So prevent this behavior, unless it enabled us to
|
|
|
|
derive that the number of iterations is a constant. */
|
|
|
|
desc->niter_expr = old_niter;
|
|
|
|
}
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
fail:
|
|
|
|
desc->simple_p = false;
|
|
|
|
return;
|
|
|
|
|
|
|
|
zero_iter:
|
|
|
|
desc->const_iter = true;
|
|
|
|
desc->niter = 0;
|
|
|
|
desc->niter_max = 0;
|
|
|
|
desc->niter_expr = const0_rtx;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Checks whether E is a simple exit from LOOP and stores its description
|
cfgloop.h (struct loop_desc): Removed.
* cfgloop.h (struct loop_desc): Removed.
(struct loop): Fields simple, desc and has_desc removed.
(simple_loop_p, count_loop_iterations): Declaration removed.
* cfgloopanal.c (struct unmark_altered_insn_data): Removed.
(unmark_altered, blocks_invariant_registers, unmark_altered_insn
blocks_single_set_registers, invariant_rtx_wrto_regs_p_helper,
invariant_rtx_wrto_regs_p, test_for_iteration, constant_iterations,
simple_loop_exit_p, variable_initial_value, variable_initial_values,
simple_condition_p, simple_increment, count_strange_loop_iterations,
inverse, fits_in_mode_p, simple_loop_p, count_loop_iterations):
Removed.
* loop-iv.c (check_simple_exit, find_simple_exit): Update comments.
From-SVN: r78777
2004-03-02 21:21:14 +01:00
|
|
|
into DESC. */
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
static void
|
|
|
|
check_simple_exit (struct loop *loop, edge e, struct niter_desc *desc)
|
|
|
|
{
|
|
|
|
basic_block exit_bb;
|
|
|
|
rtx condition, at;
|
|
|
|
edge ei;
|
|
|
|
|
|
|
|
exit_bb = e->src;
|
|
|
|
desc->simple_p = false;
|
|
|
|
|
|
|
|
/* It must belong directly to the loop. */
|
|
|
|
if (exit_bb->loop_father != loop)
|
|
|
|
return;
|
|
|
|
|
|
|
|
/* It must be tested (at least) once during any iteration. */
|
|
|
|
if (!dominated_by_p (CDI_DOMINATORS, loop->latch, exit_bb))
|
|
|
|
return;
|
|
|
|
|
|
|
|
/* It must end in a simple conditional jump. */
|
|
|
|
if (!any_condjump_p (BB_END (exit_bb)))
|
|
|
|
return;
|
|
|
|
|
|
|
|
ei = exit_bb->succ;
|
|
|
|
if (ei == e)
|
|
|
|
ei = ei->succ_next;
|
|
|
|
|
|
|
|
desc->out_edge = e;
|
|
|
|
desc->in_edge = ei;
|
|
|
|
|
|
|
|
/* Test whether the condition is suitable. */
|
2004-07-27 09:27:12 +02:00
|
|
|
if (!(condition = get_condition (BB_END (ei->src), &at, false, false)))
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
return;
|
|
|
|
|
|
|
|
if (ei->flags & EDGE_FALLTHRU)
|
|
|
|
{
|
|
|
|
condition = reversed_condition (condition);
|
|
|
|
if (!condition)
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check that we are able to determine number of iterations and fill
|
|
|
|
in information about it. */
|
|
|
|
iv_number_of_iterations (loop, at, condition, desc);
|
|
|
|
}
|
|
|
|
|
cfgloop.h (struct loop_desc): Removed.
* cfgloop.h (struct loop_desc): Removed.
(struct loop): Fields simple, desc and has_desc removed.
(simple_loop_p, count_loop_iterations): Declaration removed.
* cfgloopanal.c (struct unmark_altered_insn_data): Removed.
(unmark_altered, blocks_invariant_registers, unmark_altered_insn
blocks_single_set_registers, invariant_rtx_wrto_regs_p_helper,
invariant_rtx_wrto_regs_p, test_for_iteration, constant_iterations,
simple_loop_exit_p, variable_initial_value, variable_initial_values,
simple_condition_p, simple_increment, count_strange_loop_iterations,
inverse, fits_in_mode_p, simple_loop_p, count_loop_iterations):
Removed.
* loop-iv.c (check_simple_exit, find_simple_exit): Update comments.
From-SVN: r78777
2004-03-02 21:21:14 +01:00
|
|
|
/* Finds a simple exit of LOOP and stores its description into DESC. */
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
|
|
|
void
|
|
|
|
find_simple_exit (struct loop *loop, struct niter_desc *desc)
|
|
|
|
{
|
|
|
|
unsigned i;
|
|
|
|
basic_block *body;
|
|
|
|
edge e;
|
|
|
|
struct niter_desc act;
|
|
|
|
bool any = false;
|
|
|
|
|
|
|
|
desc->simple_p = false;
|
|
|
|
body = get_loop_body (loop);
|
|
|
|
|
|
|
|
for (i = 0; i < loop->num_nodes; i++)
|
|
|
|
{
|
|
|
|
for (e = body[i]->succ; e; e = e->succ_next)
|
|
|
|
{
|
|
|
|
if (flow_bb_inside_loop_p (loop, e->dest))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
check_simple_exit (loop, e, &act);
|
|
|
|
if (!act.simple_p)
|
|
|
|
continue;
|
|
|
|
|
|
|
|
/* Prefer constant iterations; the less the better. */
|
|
|
|
if (!any)
|
|
|
|
any = true;
|
|
|
|
else if (!act.const_iter
|
|
|
|
|| (desc->const_iter && act.niter >= desc->niter))
|
|
|
|
continue;
|
|
|
|
*desc = act;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
if (dump_file)
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
{
|
|
|
|
if (desc->simple_p)
|
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
fprintf (dump_file, "Loop %d is simple:\n", loop->num);
|
|
|
|
fprintf (dump_file, " simple exit %d -> %d\n",
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
desc->out_edge->src->index,
|
|
|
|
desc->out_edge->dest->index);
|
|
|
|
if (desc->assumptions)
|
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
fprintf (dump_file, " assumptions: ");
|
|
|
|
print_rtl (dump_file, desc->assumptions);
|
|
|
|
fprintf (dump_file, "\n");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
if (desc->noloop_assumptions)
|
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
fprintf (dump_file, " does not roll if: ");
|
|
|
|
print_rtl (dump_file, desc->noloop_assumptions);
|
|
|
|
fprintf (dump_file, "\n");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
if (desc->infinite)
|
|
|
|
{
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
fprintf (dump_file, " infinite if: ");
|
|
|
|
print_rtl (dump_file, desc->infinite);
|
|
|
|
fprintf (dump_file, "\n");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
fprintf (dump_file, " number of iterations: ");
|
|
|
|
print_rtl (dump_file, desc->niter_expr);
|
|
|
|
fprintf (dump_file, "\n");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
fprintf (dump_file, " upper bound: ");
|
|
|
|
fprintf (dump_file, HOST_WIDEST_INT_PRINT_DEC, desc->niter_max);
|
|
|
|
fprintf (dump_file, "\n");
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
else
|
toplev.c (dump_file_tbl): Rename from dump_file.
* toplev.c (dump_file_tbl): Rename from dump_file.
* bb-reorder.c, bt-load.c, cfgcleanup.c, cfglayout.c, cfgloopanal.c,
cfgloopmanip.c, cfgrtl.c, config/arm/arm.c, config/frv/frv.c,
config/i386/i386.c, config/ia64/ia64.c, config/mips/mips.c,
config/sh/sh.c, cse.c, flow.c, ifcvt.c, loop-iv.c, loop-unroll.c,
loop-unswitch.c, output.h, predict.c, profile.c, ra-build.c,
ra-colorize.c, ra-debug.c, ra-rewrite.c, ra.c, regrename.c, reload1.c,
toplev.c, tracer.c, value-prof.c, var-tracking.c, web.c:
s/rtl_dump_file/dump_file/g.
From-SVN: r78399
2004-02-25 00:40:03 +01:00
|
|
|
fprintf (dump_file, "Loop %d is not simple.\n", loop->num);
|
loop-iv.c: New file.
* loop-iv.c: New file.
* Makefile.in (loop-iv.o): New.
* basic_block.h (FOR_BB_INSNS, FOR_BB_INSNS_REVERSE): New macros.
* cfgloop.c (fill_sons_in_loop, get_loop_body_in_dom_order,
num_loop_branches): New functions.
* cfgloop.h (get_loop_body_in_dom_order, num_loop_branches,
iv_analysis_loop_init, iv_get_reaching_def, iv_analyse, get_iv_value,
find_simple_exit, iv_number_of_iterations, iv_analysis_done,
get_simple_loop_desc, free_simple_loop_desc): Declare.
(simple_loop_desc): New inline function.
(struct rtx_iv, struct niter_desc): New.
* cfgloopmanip.c (loopify): Specify semantics more precisely.
* expr.c (force_operand): Handle subregs of expressions created by
loop unroller.
* loop-init.c (loop_optimizer_init, loop_optimizer_finalize): Move
parts of the initialization to toplev.c
* loop-unroll.c (loop_exit_at_end_p): New.
(unroll_and_peel_loops): Call iv_analysis_done.
(decide_peel_once_rolling, decide_peel_completely,
decide_unroll_stupid, decide_unroll_constant_iterations,
decide_unroll_runtime_iterations, decide_peel_simple,
peel_loop_simple, unroll_loop_stupid, unroll_loop_constant_iterations,
unroll_loop_runtime_iterations): Use new simple loop analysis.
* loop-unswitch.c (compare_and_jump_seq): New.
(may_unswitch_on_p): Renamed to ...
(may_unswitch_on): Use new iv analysis.
(reversed_condition): Export.
(unswitch_single_loop, unswitch_loop): Use new iv analysis.
* predict.c (estimate_probability): Use new simple loop analysis.
* rtl.h (get_mode_bounds, reversed_condition,compare_and_jump_seq,
canon_condition, simplify_using_condition): Declare.
* stor-layout.c (get_mode_bounds): New.
* toplev.c (rest_of_handle_loop2): Some parts of
initialization/finalization moved here from loop-init.c.
From-SVN: r77951
2004-02-17 17:41:44 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
free (body);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Creates a simple loop description of LOOP if it was not computed
|
|
|
|
already. */
|
|
|
|
|
|
|
|
struct niter_desc *
|
|
|
|
get_simple_loop_desc (struct loop *loop)
|
|
|
|
{
|
|
|
|
struct niter_desc *desc = simple_loop_desc (loop);
|
|
|
|
|
|
|
|
if (desc)
|
|
|
|
return desc;
|
|
|
|
|
|
|
|
desc = xmalloc (sizeof (struct niter_desc));
|
|
|
|
iv_analysis_loop_init (loop);
|
|
|
|
find_simple_exit (loop, desc);
|
|
|
|
loop->aux = desc;
|
|
|
|
|
|
|
|
return desc;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Releases simple loop description for LOOP. */
|
|
|
|
|
|
|
|
void
|
|
|
|
free_simple_loop_desc (struct loop *loop)
|
|
|
|
{
|
|
|
|
struct niter_desc *desc = simple_loop_desc (loop);
|
|
|
|
|
|
|
|
if (!desc)
|
|
|
|
return;
|
|
|
|
|
|
|
|
free (desc);
|
|
|
|
loop->aux = NULL;
|
|
|
|
}
|