78 lines
2.9 KiB
LLVM
78 lines
2.9 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 float @llvm.fabs.f32(float)
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declare float @llvm.copysign.f32(float, float)
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declare <3 x double> @llvm.copysign.v3f64(<3 x double>, <3 x double>)
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define float @positive_sign_arg(float %x) {
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; CHECK-LABEL: @positive_sign_arg(
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; CHECK-NEXT: [[TMP1:%.*]] = call arcp float @llvm.fabs.f32(float [[X:%.*]])
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; CHECK-NEXT: ret float [[TMP1]]
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;
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%r = call arcp float @llvm.copysign.f32(float %x, float 0.0)
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ret float %r
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}
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define <3 x double> @positive_sign_arg_vec_splat(<3 x double> %x) {
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; CHECK-LABEL: @positive_sign_arg_vec_splat(
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; CHECK-NEXT: [[TMP1:%.*]] = call ninf <3 x double> @llvm.fabs.v3f64(<3 x double> [[X:%.*]])
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; CHECK-NEXT: ret <3 x double> [[TMP1]]
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;
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%r = call ninf <3 x double> @llvm.copysign.v3f64(<3 x double> %x, <3 x double> <double 42.0, double 42.0, double 42.0>)
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ret <3 x double> %r
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}
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define float @negative_sign_arg(float %x) {
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; CHECK-LABEL: @negative_sign_arg(
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; CHECK-NEXT: [[TMP1:%.*]] = call nnan float @llvm.fabs.f32(float [[X:%.*]])
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; CHECK-NEXT: [[TMP2:%.*]] = fneg nnan float [[TMP1]]
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; CHECK-NEXT: ret float [[TMP2]]
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;
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%r = call nnan float @llvm.copysign.f32(float %x, float -0.0)
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ret float %r
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}
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define <3 x double> @negative_sign_arg_vec_splat(<3 x double> %x) {
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; CHECK-LABEL: @negative_sign_arg_vec_splat(
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; CHECK-NEXT: [[TMP1:%.*]] = call fast <3 x double> @llvm.fabs.v3f64(<3 x double> [[X:%.*]])
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; CHECK-NEXT: [[TMP2:%.*]] = fneg fast <3 x double> [[TMP1]]
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; CHECK-NEXT: ret <3 x double> [[TMP2]]
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;
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%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>)
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ret <3 x double> %r
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}
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define float @known_positive_sign_arg(float %x, float %y) {
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; CHECK-LABEL: @known_positive_sign_arg(
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; CHECK-NEXT: [[TMP1:%.*]] = call ninf float @llvm.fabs.f32(float [[X:%.*]])
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; CHECK-NEXT: ret float [[TMP1]]
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;
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%fabs = call float @llvm.fabs.f32(float %y)
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%r = call ninf float @llvm.copysign.f32(float %x, float %fabs)
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ret float %r
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}
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define <3 x double> @known_positive_sign_arg_vec(<3 x double> %x, <3 x i32> %y) {
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; CHECK-LABEL: @known_positive_sign_arg_vec(
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; CHECK-NEXT: [[TMP1:%.*]] = call arcp <3 x double> @llvm.fabs.v3f64(<3 x double> [[X:%.*]])
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; CHECK-NEXT: ret <3 x double> [[TMP1]]
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;
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%yf = uitofp <3 x i32> %y to <3 x double>
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%r = call arcp <3 x double> @llvm.copysign.v3f64(<3 x double> %x, <3 x double> %yf)
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ret <3 x double> %r
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}
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; The magnitude operand of the 1st copysign is irrelevant.
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; copysign(x, copysign(y, z)) --> copysign(x, z)
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define float @copysign_sign_arg(float %x, float %y, float %z) {
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; CHECK-LABEL: @copysign_sign_arg(
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; CHECK-NEXT: [[R:%.*]] = call ninf float @llvm.copysign.f32(float [[X:%.*]], float [[Z:%.*]])
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; CHECK-NEXT: ret float [[R]]
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;
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%s = call reassoc float @llvm.copysign.f32(float %y, float %z)
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%r = call ninf float @llvm.copysign.f32(float %x, float %s)
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ret float %r
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}
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