0ef60da858
For a certain combination of options, BuildPairF64_{64}, ExtractElementF64{_64}
may be expanded into instructions using stack.
Add implicit operand $sp for such cases so that ShrinkWrapping doesn't move
prologue setup below them.
Fixes MultiSource/Benchmarks/MallocBench/cfrac for
'--target=mips-img-linux-gnu -mcpu=mips32r6 -mfpxx -mnan=2008'
and
'--target=mips-img-linux-gnu -mcpu=mips32r6 -mfp64 -mnan=2008 -mno-odd-spreg'.
Differential Revision: https://reviews.llvm.org/D50986
llvm-svn: 340927
33 lines
1.4 KiB
LLVM
33 lines
1.4 KiB
LLVM
; RUN: llc -o - %s -mtriple=mips-unknown-linux-gnu \
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; RUN: -mcpu=mips32 -mattr=+fpxx \
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; RUN: -stop-after=expand-isel-pseudos | \
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; RUN: FileCheck %s -check-prefix=FPXX-IMPLICIT-SP
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; RUN: llc -o - %s -mtriple=mips-unknown-linux-gnu \
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; RUN: -mcpu=mips32r6 -mattr=+fp64,+nooddspreg \
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; RUN: -stop-after=expand-isel-pseudos | \
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; RUN: FileCheck %s -check-prefix=FP64-IMPLICIT-SP
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; RUN: llc -o - %s -mtriple=mips-unknown-linux-gnu \
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; RUN: -mcpu=mips32r2 -mattr=+fpxx \
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; RUN: -stop-after=expand-isel-pseudos | \
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; RUN: FileCheck %s -check-prefix=NO-IMPLICIT-SP
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define double @foo2(i32 signext %v1, double %d1) {
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entry:
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; FPXX-IMPLICIT-SP: BuildPairF64 %{{[0-9]+}}, %{{[0-9]+}}, implicit $sp
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; FPXX-IMPLICIT-SP: ExtractElementF64 killed %{{[0-9]+}}, 1, implicit $sp
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; FP64-IMPLICIT-SP: BuildPairF64_64 %{{[0-9]+}}, %{{[0-9]+}}, implicit $sp
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; FP64-IMPLICIT-SP: ExtractElementF64_64 killed %{{[0-9]+}}, 1, implicit $sp
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; NO-IMPLICIT-SP: BuildPairF64 %{{[0-9]+}}, %{{[0-9]+}}
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; NO-IMPLICIT-SP-NOT: BuildPairF64 %{{[0-9]+}}, %{{[0-9]+}}, implicit $sp
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; NO-IMPLICIT-SP: ExtractElementF64 killed %{{[0-9]+}}, 1
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; NO-IMPLICIT-SP-NOT: ExtractElementF64 killed %{{[0-9]+}}, 1, implicit $sp
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%conv = fptrunc double %d1 to float
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%0 = tail call float @llvm.copysign.f32(float 1.000000e+00, float %conv)
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%conv1 = fpext float %0 to double
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ret double %conv1
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}
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declare float @llvm.copysign.f32(float, float)
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