llvm/test/Transforms/InstCombine/copysign.ll
Karthik Bhat df95a94064 Allow constant folding of copysign
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203076 91177308-0d34-0410-b5e6-96231b3b80d8
2014-03-06 05:32:52 +00:00

50 lines
1.5 KiB
LLVM

; RUN: opt -S -instcombine < %s | FileCheck %s
declare float @llvm.copysign.f32(float, float) #0
declare double @llvm.copysign.f64(double, double) #0
; CHECK-LABEL: @constant_fold_copysign_f32_01
; CHECK-NEXT: ret float -1.000000e+00
define float @constant_fold_copysign_f32_01() #0 {
%x = call float @llvm.copysign.f32(float 1.0, float -2.0) #0
ret float %x
}
; CHECK-LABEL: @constant_fold_copysign_f32_02
; CHECK-NEXT: ret float 2.000000e+00
define float @constant_fold_copysign_f32_02() #0 {
%x = call float @llvm.copysign.f32(float -2.0, float 1.0) #0
ret float %x
}
; CHECK-LABEL: @constant_fold_copysign_f32_03
; CHECK-NEXT: ret float -2.000000e+00
define float @constant_fold_copysign_f32_03() #0 {
%x = call float @llvm.copysign.f32(float -2.0, float -1.0) #0
ret float %x
}
; CHECK-LABEL: @constant_fold_copysign_f64_01
; CHECK-NEXT: ret double -1.000000e+00
define double @constant_fold_copysign_f64_01() #0 {
%x = call double @llvm.copysign.f64(double 1.0, double -2.0) #0
ret double %x
}
; CHECK-LABEL: @constant_fold_copysign_f64_02
; CHECK-NEXT: ret double 1.000000e+00
define double @constant_fold_copysign_f64_02() #0 {
%x = call double @llvm.copysign.f64(double -1.0, double 2.0) #0
ret double %x
}
; CHECK-LABEL: @constant_fold_copysign_f64_03
; CHECK-NEXT: ret double -1.000000e+00
define double @constant_fold_copysign_f64_03() #0 {
%x = call double @llvm.copysign.f64(double -1.0, double -2.0) #0
ret double %x
}
attributes #0 = { nounwind readnone }