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fix minsize detection: minsize attribute implies optimizing for size 

llvm-svn: 244464
This commit is contained in:
Sanjay Patel 2015-08-10 17:15:17 +00:00
parent 0f12d71b49
commit 10294b59de
2 changed files with 7 additions and 9 deletions
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4
llvm/lib/Target/X86/X86InstrInfo.cpp
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@ -5241,9 +5241,7 @@ MachineInstr *X86InstrInfo::foldMemoryOperandImpl(
// Unless optimizing for size, don't fold to avoid partial
// register update stalls
// FIXME: Use Function::optForSize().
if (!MF.getFunction()->hasFnAttribute(Attribute::OptimizeForSize) &&
hasPartialRegUpdate(MI->getOpcode()))
if (!MF.getFunction()->optForSize() && hasPartialRegUpdate(MI->getOpcode()))
return nullptr;
const MachineFrameInfo *MFI = MF.getFrameInfo();

12
llvm/test/CodeGen/X86/stack-folding-fp-sse42.ll
View File

@ -314,7 +314,7 @@ define i64 @stack_fold_cvtsd2si64_int(<2 x double> %a0) {
}
declare i64 @llvm.x86.sse2.cvtsd2si64(<2 x double>) nounwind readnone
define float @stack_fold_cvtsd2ss(double %a0) optsize {
define float @stack_fold_cvtsd2ss(double %a0) minsize {
;CHECK-LABEL: stack_fold_cvtsd2ss
;CHECK: cvtsd2ss {{-?[0-9]*}}(%rsp), {{%xmm[0-9][0-9]*}} {{.*#+}} 8-byte Folded Reload
%1 = tail call <2 x i64> asm sideeffect "nop", "=x,~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15},~{flags}"()
@ -331,7 +331,7 @@ define <4 x float> @stack_fold_cvtsd2ss_int(<2 x double> %a0) optsize {
}
declare <4 x float> @llvm.x86.sse2.cvtsd2ss(<4 x float>, <2 x double>) nounwind readnone
define double @stack_fold_cvtsi2sd(i32 %a0) optsize {
define double @stack_fold_cvtsi2sd(i32 %a0) minsize {
;CHECK-LABEL: stack_fold_cvtsi2sd
;CHECK: cvtsi2sdl {{-?[0-9]*}}(%rsp), {{%xmm[0-9][0-9]*}} {{.*#+}} 4-byte Folded Reload
%1 = tail call <2 x i64> asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
@ -365,7 +365,7 @@ define <2 x double> @stack_fold_cvtsi642sd_int(i64 %a0) {
}
declare <2 x double> @llvm.x86.sse2.cvtsi642sd(<2 x double>, i64) nounwind readnone
define float @stack_fold_cvtsi2ss(i32 %a0) optsize {
define float @stack_fold_cvtsi2ss(i32 %a0) minsize {
;CHECK-LABEL: stack_fold_cvtsi2ss
;CHECK: cvtsi2ssl {{-?[0-9]*}}(%rsp), {{%xmm[0-9][0-9]*}} {{.*#+}} 4-byte Folded Reload
%1 = tail call <2 x i64> asm sideeffect "nop", "=x,~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15}"()
@ -399,7 +399,7 @@ define <4 x float> @stack_fold_cvtsi642ss_int(i64 %a0) {
}
declare <4 x float> @llvm.x86.sse.cvtsi642ss(<4 x float>, i64) nounwind readnone
define double @stack_fold_cvtss2sd(float %a0) optsize {
define double @stack_fold_cvtss2sd(float %a0) minsize {
;CHECK-LABEL: stack_fold_cvtss2sd
;CHECK: cvtss2sd {{-?[0-9]*}}(%rsp), {{%xmm[0-9][0-9]*}} {{.*#+}} 4-byte Folded Reload
%1 = tail call <2 x i64> asm sideeffect "nop", "=x,~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15},~{flags}"()
@ -896,7 +896,7 @@ declare double @llvm.floor.f64(double) nounwind readnone
; TODO stack_fold_roundsd_int
declare <2 x double> @llvm.x86.sse41.round.sd(<2 x double>, <2 x double>, i32) nounwind readnone
define float @stack_fold_roundss(float %a0) optsize {
define float @stack_fold_roundss(float %a0) minsize {
;CHECK-LABEL: stack_fold_roundss
;CHECK: roundss $1, {{-?[0-9]*}}(%rsp), {{%xmm[0-9][0-9]*}} {{.*#+}} 4-byte Folded Reload
%1 = tail call <2 x i64> asm sideeffect "nop", "=x,~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15},~{flags}"()
@ -968,7 +968,7 @@ declare double @llvm.sqrt.f64(double) nounwind readnone
; TODO stack_fold_sqrtsd_int
declare <2 x double> @llvm.x86.sse2.sqrt.sd(<2 x double>) nounwind readnone
define float @stack_fold_sqrtss(float %a0) optsize {
define float @stack_fold_sqrtss(float %a0) minsize {
;CHECK-LABEL: stack_fold_sqrtss
;CHECK: sqrtss {{-?[0-9]*}}(%rsp), {{%xmm[0-9][0-9]*}} {{.*#+}} 4-byte Folded Reload
%1 = tail call <2 x i64> asm sideeffect "nop", "=x,~{xmm1},~{xmm2},~{xmm3},~{xmm4},~{xmm5},~{xmm6},~{xmm7},~{xmm8},~{xmm9},~{xmm10},~{xmm11},~{xmm12},~{xmm13},~{xmm14},~{xmm15},~{flags}"()