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| author | Jeff Law <law@redhat.com> | 2017-09-19 23:43:28 -0600 |
|---|---|---|
| committer | Jeff Law <law@gcc.gnu.org> | 2017-09-19 23:43:28 -0600 |
| commit | ac9c032e4d7e6350c529707cedda7250b77190cc (patch) | |
| tree | 926f3e77aacdcb0040c2b0731fb7dd61d5f8b7aa /gcc/combine-stack-adj.c | |
| parent | 8e7a09c353842f38c05b8cb171efa9784ab84862 (diff) | |
| download | gcc-ac9c032e4d7e6350c529707cedda7250b77190cc.zip gcc-ac9c032e4d7e6350c529707cedda7250b77190cc.tar.gz gcc-ac9c032e4d7e6350c529707cedda7250b77190cc.tar.bz2 | |
combine-stack-adj.c (combine_stack_adjustments_for_block): Do nothing for stack adjustments with REG_STACK_CHECK.
* combine-stack-adj.c (combine_stack_adjustments_for_block): Do
nothing for stack adjustments with REG_STACK_CHECK.
* sched-deps.c (parse_add_or_inc): Reject insns with
REG_STACK_CHECK from dependency breaking.
* config/i386/i386.c (pro_epilogue_adjust_stack): Return insn.
(ix86_adjust_satck_and_probe_stack_clash): Add REG_STACK_NOTEs.
* reg-notes.def (STACK_CHECK): New note.
* gcc.target/i386/stack-check-11.c: New test.
From-SVN: r252999
Diffstat (limited to 'gcc/combine-stack-adj.c')
| -rw-r--r-- | gcc/combine-stack-adj.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/gcc/combine-stack-adj.c b/gcc/combine-stack-adj.c index 9ec14a3..82d6dba 100644 --- a/gcc/combine-stack-adj.c +++ b/gcc/combine-stack-adj.c @@ -508,6 +508,8 @@ combine_stack_adjustments_for_block (basic_block bb) continue; set = single_set_for_csa (insn); + if (set && find_reg_note (insn, REG_STACK_CHECK, NULL_RTX)) + set = NULL_RTX; if (set) { rtx dest = SET_DEST (set); |