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Makefile.in (gcse.o, [...]): Depend on gcse.h..

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gcc/
	* Makefile.in (gcse.o, target-globals.o): Depend on gcse.h..
	* gcse.h: New file.
	* gcse.c: Include gcse.h.
	(default_target_gcse): New variable.
	(this_target_gcse): New conditional variable.
	(can_copy): Redefine as a macro.
	(can_copy_init_p): New macro.
	(can_copy_p): Remove can_copy_init_p.
	* target-globals.h (this_target_gcse): Declare.
	(target_globals): Add a gcse field.
	(restore_target_globals): Copy the gcse field to
	this_target_gcse.
	* target-globals.c: Include gcse.h.
	(default_target_globals): Initialize the gcse field.
	(save_target_globals): Likewise.

From-SVN: r162108
This commit is contained in:
Richard Sandiford 2010-07-12 19:04:03 +00:00 committed by Richard Sandiford
parent 15e7b94f18
commit 7c6811fe1e
6 changed files with 80 additions and 9 deletions
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18
gcc/ChangeLog
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@ -1,3 +1,21 @@
2010-07-12 Richard Sandiford <rdsandiford@googlemail.com>
* Makefile.in (gcse.o, target-globals.o): Depend on gcse.h..
* gcse.h: New file.
* gcse.c: Include gcse.h.
(default_target_gcse): New variable.
(this_target_gcse): New conditional variable.
(can_copy): Redefine as a macro.
(can_copy_init_p): New macro.
(can_copy_p): Remove can_copy_init_p.
* target-globals.h (this_target_gcse): Declare.
(target_globals): Add a gcse field.
(restore_target_globals): Copy the gcse field to
this_target_gcse.
* target-globals.c: Include gcse.h.
(default_target_globals): Initialize the gcse field.
(save_target_globals): Likewise.
2010-07-12 Richard Sandiford <rdsandiford@googlemail.com>
* ira-int.h (target_ira_int): Add x_ira_prohibited_mode_move_regs

4
gcc/Makefile.in
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@ -3097,7 +3097,7 @@ gcse.o : gcse.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(RTL_H) \
$(RECOG_H) $(EXPR_H) $(BASIC_BLOCK_H) $(FUNCTION_H) output.h $(TOPLEV_H) $(DIAGNOSTIC_CORE_H) \
$(TM_P_H) $(PARAMS_H) cselib.h $(EXCEPT_H) gt-gcse.h $(TREE_H) $(TIMEVAR_H) \
intl.h $(OBSTACK_H) $(TREE_PASS_H) $(DF_H) $(DBGCNT_H) $(TARGET_H) \
$(DF_H)
$(DF_H) gcse.h
store-motion.o : store-motion.c $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) $(RTL_H) \
$(REGS_H) hard-reg-set.h $(FLAGS_H) insn-config.h $(GGC_H) \
$(RECOG_H) $(EXPR_H) $(BASIC_BLOCK_H) $(FUNCTION_H) output.h $(TOPLEV_H) $(DIAGNOSTIC_CORE_H) \
@ -3483,7 +3483,7 @@ lower-subreg.o : lower-subreg.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \
target-globals.o : target-globals.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \
$(TM_H) insn-config.h $(MACHMODE_H) $(GGC_H) $(TOPLEV_H) target-globals.h \
$(FLAGS_H) $(REGS_H) $(RTL_H) reload.h expmed.h $(EXPR_H) $(OPTABS_H) \
$(LIBFUNCS_H) $(CFGLOOP_H) $(IRA_INT_H) builtins.h
$(LIBFUNCS_H) $(CFGLOOP_H) $(IRA_INT_H) builtins.h gcse.h
$(out_object_file): $(out_file) $(CONFIG_H) coretypes.h $(TM_H) $(TREE_H) \
$(RTL_H) $(REGS_H) hard-reg-set.h insn-config.h conditions.h \

16
gcc/gcse.c
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@ -170,6 +170,7 @@ along with GCC; see the file COPYING3. If not see
#include "df.h"
#include "dbgcnt.h"
#include "target.h"
#include "gcse.h"
/* We support GCSE via Partial Redundancy Elimination. PRE optimizations
are a superset of those done by classic GCSE.
@ -263,6 +264,11 @@ along with GCC; see the file COPYING3. If not see
/* GCSE global vars. */
struct target_gcse default_target_gcse;
#if SWITCHABLE_TARGET
struct target_gcse *this_target_gcse = &default_target_gcse;
#endif
/* Set to non-zero if CSE should run after all GCSE optimizations are done. */
int flag_rerun_cse_after_global_opts;
@ -539,10 +545,10 @@ static bool is_too_expensive (const char *);
/* Misc. utilities. */
/* Nonzero for each mode that supports (set (reg) (reg)).
This is trivially true for integer and floating point values.
It may or may not be true for condition codes. */
static char can_copy[(int) NUM_MACHINE_MODES];
#define can_copy \
(this_target_gcse->x_can_copy)
#define can_copy_init_p \
(this_target_gcse->x_can_copy_init_p)
/* Compute which modes support reg/reg copy operations. */
@ -579,8 +585,6 @@ compute_can_copy (void)
bool
can_copy_p (enum machine_mode mode)
{
static bool can_copy_init_p = false;
if (! can_copy_init_p)
{
compute_can_copy ();

43
gcc/gcse.h Normal file
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@ -0,0 +1,43 @@
/* Global common subexpression elimination/Partial redundancy elimination
and global constant/copy propagation for GNU compiler.
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
2006, 2007, 2008, 2009, 2010 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 3, 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 COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifndef GCC_GCSE_H
#define GCC_GCSE_H
/* Target-dependent globals. */
struct target_gcse {
/* Nonzero for each mode that supports (set (reg) (reg)).
This is trivially true for integer and floating point values.
It may or may not be true for condition codes. */
char x_can_copy[(int) NUM_MACHINE_MODES];
/* True if the previous field has been initialized. */
bool x_can_copy_init_p;
};
extern GTY(()) struct target_gcse default_target_gcse;
#if SWITCHABLE_TARGET
extern struct target_gcse *this_target_gcse;
#else
#define this_target_gcse (&default_target_gcse)
#endif
#endif

5
gcc/target-globals.c
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@ -38,6 +38,7 @@ along with GCC; see the file COPYING3. If not see
#include "cfgloop.h"
#include "ira-int.h"
#include "builtins.h"
#include "gcse.h"
#if SWITCHABLE_TARGET
struct target_globals default_target_globals = {
@ -52,7 +53,8 @@ struct target_globals default_target_globals = {
&default_target_cfgloop,
&default_target_ira,
&default_target_ira_int,
&default_target_builtins
&default_target_builtins,
&default_target_gcse
};
struct target_globals *
@ -73,6 +75,7 @@ save_target_globals (void)
g->ira = XCNEW (struct target_ira);
g->ira_int = XCNEW (struct target_ira_int);
g->builtins = XCNEW (struct target_builtins);
g->gcse = XCNEW (struct target_gcse);
restore_target_globals (g);
target_reinit ();
return g;

3
gcc/target-globals.h
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@ -33,6 +33,7 @@ extern struct target_cfgloop *this_target_cfgloop;
extern struct target_ira *this_target_ira;
extern struct target_ira_int *this_target_ira_int;
extern struct target_builtins *this_target_builtins;
extern struct target_gcse *this_target_gcse;
struct GTY(()) target_globals {
struct target_flag_state *GTY((skip)) flag_state;
@ -47,6 +48,7 @@ struct GTY(()) target_globals {
struct target_ira *GTY((skip)) ira;
struct target_ira_int *GTY((skip)) ira_int;
struct target_builtins *GTY((skip)) builtins;
struct target_gcse *GTY((skip)) gcse;
};
extern struct target_globals default_target_globals;
@ -68,6 +70,7 @@ restore_target_globals (struct target_globals *g)
this_target_ira = g->ira;
this_target_ira_int = g->ira_int;
this_target_builtins = g->builtins;
this_target_gcse = g->gcse;
}
#endif