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[InstCombine] add tests for copysign; NFC

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This commit is contained in:
Sanjay Patel 2019-12-17 16:46:42 -05:00
parent 1ee93efcd0
commit 3d2cabef27
1 changed files with 23 additions and 0 deletions
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23
test/Transforms/InstCombine/copysign.ll
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@ -1,6 +1,7 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -instcombine < %s | FileCheck %s
declare float @llvm.fabs.f32(float)
declare float @llvm.copysign.f32(float, float)
declare <3 x double> @llvm.copysign.v3f64(<3 x double>, <3 x double>)
@ -41,3 +42,25 @@ define <3 x double> @negative_sign_arg_vec_splat(<3 x double> %x) {
%r = call fast <3 x double> @llvm.copysign.v3f64(<3 x double> %x, <3 x double> <double -42.0, double -42.0, double -42.0>)
ret <3 x double> %r
}
define float @known_positive_sign_arg(float %x, float %y) {
; CHECK-LABEL: @known_positive_sign_arg(
; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[Y:%.*]])
; CHECK-NEXT: [[R:%.*]] = call ninf float @llvm.copysign.f32(float [[X:%.*]], float [[FABS]])
; CHECK-NEXT: ret float [[R]]
;
%fabs = call float @llvm.fabs.f32(float %y)
%r = call ninf float @llvm.copysign.f32(float %x, float %fabs)
ret float %r
}
define <3 x double> @known_positive_sign_arg_vec(<3 x double> %x, <3 x i32> %y) {
; CHECK-LABEL: @known_positive_sign_arg_vec(
; CHECK-NEXT: [[YF:%.*]] = uitofp <3 x i32> [[Y:%.*]] to <3 x double>
; CHECK-NEXT: [[R:%.*]] = call arcp <3 x double> @llvm.copysign.v3f64(<3 x double> [[X:%.*]], <3 x double> [[YF]])
; CHECK-NEXT: ret <3 x double> [[R]]
;
%yf = uitofp <3 x i32> %y to <3 x double>
%r = call arcp <3 x double> @llvm.copysign.v3f64(<3 x double> %x, <3 x double> %yf)
ret <3 x double> %r
}