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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/config | |
| 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/config')
| -rw-r--r-- | gcc/config/i386/i386.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index fdfe595..d19c770 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -13547,7 +13547,7 @@ ix86_add_queued_cfa_restore_notes (rtx insn) zero if %r11 register is live and cannot be freely used and positive otherwise. */ -static void +static rtx pro_epilogue_adjust_stack (rtx dest, rtx src, rtx offset, int style, bool set_cfa) { @@ -13638,6 +13638,7 @@ pro_epilogue_adjust_stack (rtx dest, rtx src, rtx offset, m->fs.sp_valid = valid; m->fs.sp_realigned = realigned; } + return insn; } /* Find an available register to be used as dynamic realign argument @@ -13987,9 +13988,11 @@ ix86_adjust_stack_and_probe_stack_clash (const HOST_WIDE_INT size) for (i = probe_interval; i <= size; i += probe_interval) { /* Allocate PROBE_INTERVAL bytes. */ - pro_epilogue_adjust_stack (stack_pointer_rtx, stack_pointer_rtx, - GEN_INT (-probe_interval), -1, - m->fs.cfa_reg == stack_pointer_rtx); + rtx insn + = pro_epilogue_adjust_stack (stack_pointer_rtx, stack_pointer_rtx, + GEN_INT (-PROBE_INTERVAL), -1, + m->fs.cfa_reg == stack_pointer_rtx); + add_reg_note (insn, REG_STACK_CHECK, const0_rtx); /* And probe at *sp. */ emit_stack_probe (stack_pointer_rtx); |