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Also cos(fabs(x)) -> cos(x) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291022 91177308-0d34-0410-b5e6-96231b3b80d8
82 lines
2.8 KiB
LLVM
82 lines
2.8 KiB
LLVM
; RUN: opt < %s -instcombine -S | FileCheck %s
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; This test makes sure that the undef is propagated for the cos instrinsic
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declare double @llvm.cos.f64(double %Val)
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declare float @llvm.cos.f32(float %Val)
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declare <2 x float> @llvm.cos.v2f32(<2 x float> %Val)
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declare float @llvm.fabs.f32(float %Val)
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declare <2 x float> @llvm.fabs.v2f32(<2 x float> %Val)
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; Function Attrs: nounwind readnone
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define double @test1() {
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; CHECK-LABEL: define double @test1(
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; CHECK-NEXT: ret double 0.000000e+00
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%1 = call double @llvm.cos.f64(double undef)
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ret double %1
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}
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; Function Attrs: nounwind readnone
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define float @test2(float %d) {
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; CHECK-LABEL: define float @test2(
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; CHECK-NEXT: %cosval = call float @llvm.cos.f32(float %d)
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%cosval = call float @llvm.cos.f32(float %d)
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%cosval2 = call float @llvm.cos.f32(float undef)
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%fsum = fadd float %cosval2, %cosval
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ret float %fsum
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; CHECK-NEXT: %fsum
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; CHECK: ret float %fsum
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}
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; CHECK-LABEL: @cos_fneg_f32(
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; CHECK: %cos = call float @llvm.cos.f32(float %x)
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; CHECK-NEXT: ret float %cos
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define float @cos_fneg_f32(float %x) {
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%x.fneg = fsub float -0.0, %x
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%cos = call float @llvm.cos.f32(float %x.fneg)
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ret float %cos
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}
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; FIXME: m_FNeg() doesn't handle vectors
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; CHECK-LABEL: @cos_fneg_v2f32(
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; CHECK: %x.fneg = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, %x
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; CHECK-NEXT: %cos = call <2 x float> @llvm.cos.v2f32(<2 x float> %x.fneg)
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; CHECK-NEXT: ret <2 x float> %cos
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define <2 x float> @cos_fneg_v2f32(<2 x float> %x) {
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%x.fneg = fsub <2 x float> <float -0.0, float -0.0>, %x
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%cos = call <2 x float> @llvm.cos.v2f32(<2 x float> %x.fneg)
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ret <2 x float> %cos
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}
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; CHECK-LABEL: @cos_fabs_f32(
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; CHECK-NEXT: %cos = call float @llvm.cos.f32(float %x)
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; CHECK-NEXT: ret float %cos
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define float @cos_fabs_f32(float %x) {
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%x.fabs = call float @llvm.fabs.f32(float %x)
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%cos = call float @llvm.cos.f32(float %x.fabs)
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ret float %cos
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}
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; CHECK-LABEL: @cos_fabs_fneg_f32(
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; CHECK: %cos = call float @llvm.cos.f32(float %x)
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; CHECK-NEXT: ret float %cos
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define float @cos_fabs_fneg_f32(float %x) {
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%x.fabs = call float @llvm.fabs.f32(float %x)
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%x.fabs.fneg = fsub float -0.0, %x.fabs
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%cos = call float @llvm.cos.f32(float %x.fabs.fneg)
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ret float %cos
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}
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; CHECK-LABEL: @cos_fabs_fneg_v2f32(
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; CHECK: %x.fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %x)
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; CHECK-NEXT: %x.fabs.fneg = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, %x.fabs
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; CHECK-NEXT: %cos = call <2 x float> @llvm.cos.v2f32(<2 x float> %x.fabs.fneg)
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; CHECK-NEXT: ret <2 x float> %cos
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define <2 x float> @cos_fabs_fneg_v2f32(<2 x float> %x) {
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%x.fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %x)
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%x.fabs.fneg = fsub <2 x float> <float -0.0, float -0.0>, %x.fabs
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%cos = call <2 x float> @llvm.cos.v2f32(<2 x float> %x.fabs.fneg)
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ret <2 x float> %cos
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}
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