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| author | H.J. Lu <hongjiu.lu@intel.com> | 2009-05-18 17:21:13 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl@gcc.gnu.org> | 2009-05-18 10:21:13 -0700 |
| commit | 6a90d232abb6815994146ecc0ebbfc83d37f6d8a (patch) | |
| tree | 2fb3542b94522bbfefddada10c6ca9132052ae09 /gcc/config/i386/i386.md | |
| parent | cf249b02ea98df08336b39543b54ff2830d87d94 (diff) | |
| download | gcc-6a90d232abb6815994146ecc0ebbfc83d37f6d8a.tar.gz | |
re PR target/39942 (Nonoptimal code - leaveq; xchg %ax,%ax; retq)
2009-05-18 H.J. Lu <hongjiu.lu@intel.com>
PR target/39942
* config/i386/i386.c (ix86_avoid_jump_misspredicts): Replace
gen_align with gen_pad.
(ix86_reorg): Check ASM_OUTPUT_MAX_SKIP_PAD instead of
#ifdef ASM_OUTPUT_MAX_SKIP_ALIGN.
* config/i386/i386.h (ASM_OUTPUT_MAX_SKIP_PAD): New.
* config/i386/x86-64.h (ASM_OUTPUT_MAX_SKIP_PAD): Likewise.
* config/i386/i386.md (align): Renamed to ...
(pad): This. Replace ASM_OUTPUT_MAX_SKIP_ALIGN with
ASM_OUTPUT_MAX_SKIP_PAD.
From-SVN: r147671
Diffstat (limited to 'gcc/config/i386/i386.md')
| -rw-r--r-- | gcc/config/i386/i386.md | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 198b59d2e47..2e2880220b8 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -15519,16 +15519,16 @@ (set_attr "length_immediate" "0") (set_attr "modrm" "0")]) -;; Align to 16-byte boundary, max skip in op0. Used to avoid +;; Pad to 16-byte boundary, max skip in op0. Used to avoid ;; branch prediction penalty for the third jump in a 16-byte ;; block on K8. -(define_insn "align" +(define_insn "pad" [(unspec_volatile [(match_operand 0 "" "")] UNSPECV_ALIGN)] "" { -#ifdef ASM_OUTPUT_MAX_SKIP_ALIGN - ASM_OUTPUT_MAX_SKIP_ALIGN (asm_out_file, 4, (int)INTVAL (operands[0])); +#ifdef ASM_OUTPUT_MAX_SKIP_PAD + ASM_OUTPUT_MAX_SKIP_PAD (asm_out_file, 4, (int)INTVAL (operands[0])); #else /* It is tempting to use ASM_OUTPUT_ALIGN here, but we don't want to do that. The align insn is used to avoid 3 jump instructions in the row to improve |