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f86719876c
This is a follow-up to rL339604 which did the same transform for a sin libcall. The handling of intrinsics vs. libcalls is unfortunately scattered, so I'm just adding this next to the existing transform for llvm.cos for now. This should resolve PR38458: https://bugs.llvm.org/show_bug.cgi?id=38458 If the call was already negated, the negates will cancel each other out. llvm-svn: 340952
123 lines
4.0 KiB
LLVM
123 lines
4.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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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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define double @undef_arg() {
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; CHECK-LABEL: @undef_arg(
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; CHECK-NEXT: ret double 0.000000e+00
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;
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%r = call double @llvm.cos.f64(double undef)
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ret double %r
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}
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define float @undef_arg2(float %d) {
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; CHECK-LABEL: @undef_arg2(
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; CHECK-NEXT: [[COSVAL:%.*]] = call float @llvm.cos.f32(float [[D:%.*]])
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; CHECK-NEXT: [[FSUM:%.*]] = fadd float [[COSVAL]], 0.000000e+00
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; CHECK-NEXT: ret float [[FSUM]]
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;
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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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}
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define float @fneg_f32(float %x) {
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; CHECK-LABEL: @fneg_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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;
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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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define <2 x float> @fneg_v2f32(<2 x float> %x) {
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; CHECK-LABEL: @fneg_v2f32(
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; CHECK-NEXT: [[COS:%.*]] = call <2 x float> @llvm.cos.v2f32(<2 x float> [[X:%.*]])
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; CHECK-NEXT: ret <2 x float> [[COS]]
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;
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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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; FMF are not required, but they should propagate.
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define <2 x float> @fneg_cos_fmf(<2 x float> %x){
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; CHECK-LABEL: @fneg_cos_fmf(
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; CHECK-NEXT: [[R:%.*]] = call nnan afn <2 x float> @llvm.cos.v2f32(<2 x float> [[X:%.*]])
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; CHECK-NEXT: ret <2 x float> [[R]]
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;
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%negx = fsub fast <2 x float> <float -0.0, float -0.0>, %x
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%r = call nnan afn <2 x float> @llvm.cos.v2f32(<2 x float> %negx)
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ret <2 x float> %r
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}
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define float @fabs_f32(float %x) {
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; CHECK-LABEL: @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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;
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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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define float @fabs_fneg_f32(float %x) {
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; CHECK-LABEL: @fabs_fneg_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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;
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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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define <2 x float> @fabs_fneg_v2f32(<2 x float> %x) {
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; CHECK-LABEL: @fabs_fneg_v2f32(
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; CHECK-NEXT: [[COS:%.*]] = call <2 x float> @llvm.cos.v2f32(<2 x float> [[X:%.*]])
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; CHECK-NEXT: ret <2 x float> [[COS]]
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;
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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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; Negate is canonicalized after sin.
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declare <2 x float> @llvm.sin.v2f32(<2 x float>)
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define <2 x float> @fneg_sin(<2 x float> %x){
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; CHECK-LABEL: @fneg_sin(
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; CHECK-NEXT: [[TMP1:%.*]] = call <2 x float> @llvm.sin.v2f32(<2 x float> [[X:%.*]])
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; CHECK-NEXT: [[R:%.*]] = fsub <2 x float> <float -0.000000e+00, float -0.000000e+00>, [[TMP1]]
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; CHECK-NEXT: ret <2 x float> [[R]]
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;
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%negx = fsub <2 x float> <float -0.0, float -0.0>, %x
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%r = call <2 x float> @llvm.sin.v2f32(<2 x float> %negx)
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ret <2 x float> %r
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}
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; FMF are not required, but they should propagate.
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define <2 x float> @fneg_sin_fmf(<2 x float> %x){
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; CHECK-LABEL: @fneg_sin_fmf(
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; CHECK-NEXT: [[TMP1:%.*]] = call nnan arcp afn <2 x float> @llvm.sin.v2f32(<2 x float> [[X:%.*]])
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; CHECK-NEXT: [[R:%.*]] = fsub nnan arcp afn <2 x float> <float -0.000000e+00, float -0.000000e+00>, [[TMP1]]
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; CHECK-NEXT: ret <2 x float> [[R]]
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;
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%negx = fsub fast <2 x float> <float -0.0, float -0.0>, %x
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%r = call nnan arcp afn <2 x float> @llvm.sin.v2f32(<2 x float> %negx)
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ret <2 x float> %r
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}
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