2017-12-04 Richard Biener <rguenther@suse.de>
* tree-vectorizer.h (check_reduction_path): Declare.
* tree-vect-loop.c (check_reduction_path): New function, split out
from ...
(vect_is_simple_reduction): ... here.
* gimple-loop-interchange.cc: Include tree-vectorizer.h.
(loop_cand::analyze_iloop_reduction_var): Use single_imm_use.
Properly check for a supported reduction operation and a
valid expression if the reduction covers multiple stmts.
(prepare_perfect_loop_nest): Simpify allocation.
(pass_linterchange::execute): Likewise.
* gcc.dg/tree-ssa/loop-interchange-1.c: Add fast-math flags.
* gcc.dg/tree-ssa/loop-interchange-1b.c: New test variant.
* gcc.dg/tree-ssa/loop-interchange-4.c: XFAIL.
From-SVN: r255383
2017-11-28 Bin Cheng <bin.cheng@arm.com>
* Makefile.in (gimple-loop-interchange.o): New object file.
* common.opt (floop-interchange): Reuse the option from graphite.
* doc/invoke.texi (-floop-interchange): Ditto. New document.
* gimple-loop-interchange.cc: New file.
* params.def (PARAM_LOOP_INTERCHANGE_MAX_NUM_STMTS): New parameter.
(PARAM_LOOP_INTERCHANGE_STRIDE_RATIO): New parameter.
* passes.def (pass_linterchange): New pass.
* timevar.def (TV_LINTERCHANGE): New time var.
* tree-pass.h (make_pass_linterchange): New declaration.
* tree-ssa-loop-ivcanon.c (create_canonical_iv): Change to external
interchange. Record IV before/after increment in new parameters.
* tree-ssa-loop-ivopts.h (create_canonical_iv): New declaration.
gcc/testsuite
2017-11-28 Bin Cheng <bin.cheng@arm.com>
* gcc.dg/tree-ssa/loop-interchange-1.c: New test.
* gcc.dg/tree-ssa/loop-interchange-2.c: New test.
* gcc.dg/tree-ssa/loop-interchange-3.c: New test.
* gcc.dg/tree-ssa/loop-interchange-4.c: New test.
* gcc.dg/tree-ssa/loop-interchange-5.c: New test.
* gcc.dg/tree-ssa/loop-interchange-6.c: New test.
* gcc.dg/tree-ssa/loop-interchange-7.c: New test.
* gcc.dg/tree-ssa/loop-interchange-8.c: New test.
* gcc.dg/tree-ssa/loop-interchange-9.c: New test.
* gcc.dg/tree-ssa/loop-interchange-10.c: New test.
* gcc.dg/tree-ssa/loop-interchange-11.c: New test.
From-SVN: r255207
2017-11-28 Bin Cheng <bin.cheng@arm.com>
* tree-ssa-dce.c (simple_dce_from_worklist): Move and rename from
tree-ssa-pre.c::remove_dead_inserted_code.
* tree-ssa-dce.h: New file.
* tree-ssa-pre.c (tree-ssa-dce.h): Include new header file.
(remove_dead_inserted_code): Move and rename to function
tree-ssa-dce.c::simple_dce_from_worklist.
(pass_pre::execute): Update use.
From-SVN: r255206
PR c++/81675
* cp-gimplify.c (cp_fold) <case COND_EXPR>: Don't return immediately
for VOID_TYPE_P COND_EXPRs, instead fold the operands and if op0 is
INTEGER_CST, ensure that both op1 and op2 are non-NULL and fall
through into normal folding, otherwise just rebuild x if any op
changed.
* g++.dg/warn/pr81675.C: New test.
From-SVN: r255167
bootstrap-ubsan shows:
gcc/hash-map.h:277:19: runtime error: member access within null pointer of type 'struct hash_map'
Fix the issue by returning early.
From-SVN: r255166
According to the description of inssp instruction from Intel CET it
adusts the shadow stack pointer (ssp) only by value in the range of
[0..255]. As a number of adjustment could be greater than 255 there
should be a loop generated to adjust ssp.
gcc/
* config/i386/i386.md: Add a loop with incssp.
* testsuite/gcc.target/i386/cet-sjlj-1.c: Fix test.
* testsuite/gcc.target/i386/cet-sjlj-4.c: Likewise.
From-SVN: r255164
PR debug/81307
* dbxout.c (lastlineno): New variable.
(dbx_debug_hooks): Use dbxout_switch_text_section as
switch_text_section debug hook.
(dbxout_function_end): Switch to current_function_section
rather than function_section. If crtl->has_bb_partition,
output just one N_FUN, depending on in_cold_section_p.
(dbxout_source_line): Remember last lineno in lastlineno.
(dbxout_switch_text_section): New function.
(dbxout_function_decl): Adjust dbxout_block caller.
(dbx_block_with_cold_children): New function.
(dbxout_block): Return true if any LBRAC/RBRAC have been
emitted. Use dbx_block_with_cold_children at depth == 0
in second partition. Add PARENT_BLOCKNUM argument, pass
it optionally adjusted to children. Output LBRAC/RBRAC
around recursive call only if the block is in the current
partition, if not and anything was output, emit empty
range LBRAC/RBRAC.
* final.c (final_scan_insn): Compute cold_function_name
before calling switch_text_section debug hook. Call
that hook even if dwarf2out_do_frame if not emitting
dwarf debug info.
* g++.dg/debug/debug9.C: Remove -fno-reorder-blocks-and-partition
workaround.
From-SVN: r255161
PR rtl-optimization/81553
* combine.c (simplify_if_then_else): In (if_then_else COND (OP Z C1) Z)
to (OP Z (mult COND (C1 * STORE_FLAG_VALUE))) optimization, if OP
is a shift where C1 has different mode than the whole shift, use C1's
mode for MULT rather than the shift's mode.
* gcc.c-torture/compile/pr81553.c: New test.
From-SVN: r255150
PR target/82848
* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Don't fold
builtins not enabled in the currently selected ISA.
* gcc.target/powerpc/pr82848.c: New test.
From-SVN: r255148
PR fortran/81304
* trans-openmp.c (gfc_trans_omp_array_reduction_or_udr): Set
attr.implicit_type in intrinsic_sym to avoid undesirable warning.
* testsuite/libgomp.fortran/pr81304.f90: New test.
From-SVN: r255144
This patch implements the some of the division optimizations discussed in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71026.
The division reciprocal optimization now handles divisions by squares:
x / (y * y) -> x * (1 / y) * (1 / y)
This requires at least one more division by y before it triggers - the
3 divisions of (1/ y) are then CSEd into a single division. Overall
this changes 1 division into 1 multiply, which is generally much faster.
2017-11-24 Jackson Woodruff <jackson.woodruff@arm.com>
gcc/
PR tree-optimization/71026
* tree-ssa-math-opts (is_division_by_square, is_square_of): New.
(insert_reciprocals): Change to insert reciprocals before a division
by a square and to insert the square of a reciprocal.
(execute_cse_reciprocals_1): Change to consider division by a square.
(register_division_in): Add importance parameter.
testsuite/
PR tree-optimization/71026
* gfortran.dg/extract_recip_1.f: New test.
* gcc.dg/extract_recip_3.c: New test.
* gcc.dg/extract_recip_4.c: New test.
From-SVN: r255141
* tree-object-size.c (pass_through_call): Use gimple_call_return_flags
ERF_RETURN*ARG* for builtins other than BUILT_IN_ASSUME_ALIGNED,
check for the latter with gimple_call_builtin_p. Do not handle
BUILT_IN_STPNCPY_CHK which is not a pass through call.
* gcc.dg/builtin-object-size-18.c: New test.
From-SVN: r255133
Bin Cheng
Richard Biener
Richard Biener
Tamar Christina
Jakub Jelinek
Markus Trippelsdorf
Eric Botcazou
Igor Tsimbalist
Martin Jambor
Jakub Jelinek
GCC Administrator
Uros Bizjak
Boris Kolpackov
Andreas Schwab
Jackson Woodruff
Marc Glisse
Jan Hubicka
Janne Blomqvist
Kirill Yukhin
Jonathan Wakely
Christophe Lyon
Julia Koval