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224e72eaad
Summary: The llvm cos intrinsic currently does not propagate undef's. This change transforms cos(undef) to null value or 0. There are 2 test cases added as well. Patch by Anna Thomas! Reviewers: sanjoy Subscribers: majnemer, llvm-commits Differential Revision: http://reviews.llvm.org/D18863 llvm-svn: 265825
27 lines
790 B
LLVM
27 lines
790 B
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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; 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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