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-rw-r--r--llvm/test/Transforms/InstCombine/fabs-fneg-fold.ll186
1 files changed, 186 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/fabs-fneg-fold.ll b/llvm/test/Transforms/InstCombine/fabs-fneg-fold.ll
new file mode 100644
index 0000000..a1988e5
--- /dev/null
+++ b/llvm/test/Transforms/InstCombine/fabs-fneg-fold.ll
@@ -0,0 +1,186 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
+; RUN: opt -S -passes=instcombine %s | FileCheck %s
+
+define float @fabs_fneg_basic(float %x) {
+; CHECK-LABEL: define float @fabs_fneg_basic(
+; CHECK-SAME: float [[X:%.*]]) {
+; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[X]])
+; CHECK-NEXT: ret float [[FABS]]
+;
+ %neg = fneg float %x
+ %fabs = call float @llvm.fabs.f32(float %neg)
+ ret float %fabs
+}
+
+define <2 x float> @fabs_fneg_v2f32(<2 x float> %x) {
+; CHECK-LABEL: define <2 x float> @fabs_fneg_v2f32(
+; CHECK-SAME: <2 x float> [[X:%.*]]) {
+; CHECK-NEXT: [[FABS:%.*]] = call <2 x float> @llvm.fabs.v2f32(<2 x float> [[X]])
+; CHECK-NEXT: ret <2 x float> [[FABS]]
+;
+ %neg = fneg <2 x float> %x
+ %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %neg)
+ ret <2 x float> %fabs
+}
+
+define double @fabs_fneg_f64(double %x) {
+; CHECK-LABEL: define double @fabs_fneg_f64(
+; CHECK-SAME: double [[X:%.*]]) {
+; CHECK-NEXT: [[FABS:%.*]] = call double @llvm.fabs.f64(double [[X]])
+; CHECK-NEXT: ret double [[FABS]]
+;
+ %neg = fneg double %x
+ %fabs = call double @llvm.fabs.f64(double %neg)
+ ret double %fabs
+}
+
+define <4 x double> @fabs_fneg_v4f64(<4 x double> %x) {
+; CHECK-LABEL: define <4 x double> @fabs_fneg_v4f64(
+; CHECK-SAME: <4 x double> [[X:%.*]]) {
+; CHECK-NEXT: [[FABS:%.*]] = call <4 x double> @llvm.fabs.v4f64(<4 x double> [[X]])
+; CHECK-NEXT: ret <4 x double> [[FABS]]
+;
+ %neg = fneg <4 x double> %x
+ %fabs = call <4 x double> @llvm.fabs.v4f64(<4 x double> %neg)
+ ret <4 x double> %fabs
+}
+
+define half @fabs_fneg_f16(half %x) {
+; CHECK-LABEL: define half @fabs_fneg_f16(
+; CHECK-SAME: half [[X:%.*]]) {
+; CHECK-NEXT: [[FABS:%.*]] = call half @llvm.fabs.f16(half [[X]])
+; CHECK-NEXT: ret half [[FABS]]
+;
+ %neg = fneg half %x
+ %fabs = call half @llvm.fabs.f16(half %neg)
+ ret half %fabs
+}
+
+define float @fabs_copysign_nnan(float %x, float %y) {
+; CHECK-LABEL: define float @fabs_copysign_nnan(
+; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
+; CHECK-NEXT: [[FABS:%.*]] = call nnan float @llvm.fabs.f32(float [[X]])
+; CHECK-NEXT: ret float [[FABS]]
+;
+ %copysign = call float @llvm.copysign.f32(float %x, float %y)
+ %fabs = call nnan float @llvm.fabs.f32(float %copysign)
+ ret float %fabs
+}
+
+
+define float @fabs_copysign_ninf(float %x, float %y) {
+; CHECK-LABEL: define float @fabs_copysign_ninf(
+; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
+; CHECK-NEXT: [[FABS:%.*]] = call ninf float @llvm.fabs.f32(float [[X]])
+; CHECK-NEXT: ret float [[FABS]]
+;
+ %copysign = call float @llvm.copysign.f32(float %x, float %y)
+ %fabs = call ninf float @llvm.fabs.f32(float %copysign)
+ ret float %fabs
+}
+
+define float @fabs_copysign_nsz(float %x, float %y) {
+; CHECK-LABEL: define float @fabs_copysign_nsz(
+; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
+; CHECK-NEXT: [[FABS:%.*]] = call nsz float @llvm.fabs.f32(float [[X]])
+; CHECK-NEXT: ret float [[FABS]]
+;
+ %copysign = call float @llvm.copysign.f32(float %x, float %y)
+ %fabs = call nsz float @llvm.fabs.f32(float %copysign)
+ ret float %fabs
+}
+
+define float @fabs_copysign_nnan_negative(float %x, float %y) {
+; CHECK-LABEL: define float @fabs_copysign_nnan_negative(
+; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
+; CHECK-NEXT: [[FABS:%.*]] = call nnan float @llvm.fabs.f32(float [[X]])
+; CHECK-NEXT: ret float [[FABS]]
+;
+ %copysign = call float @llvm.copysign.f32(float %x, float %y)
+ %fabs = call nnan float @llvm.fabs.f32(float %copysign)
+ ret float %fabs
+}
+
+
+define float @fabs_copysign_ninf_negative(float %x, float %y) {
+; CHECK-LABEL: define float @fabs_copysign_ninf_negative(
+; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
+; CHECK-NEXT: [[FABS:%.*]] = call ninf float @llvm.fabs.f32(float [[X]])
+; CHECK-NEXT: ret float [[FABS]]
+;
+ %copysign = call float @llvm.copysign.f32(float %x, float %y)
+ %fabs = call ninf float @llvm.fabs.f32(float %copysign)
+ ret float %fabs
+}
+
+define float @fabs_copysign_nsz_negative(float %x, float %y) {
+; CHECK-LABEL: define float @fabs_copysign_nsz_negative(
+; CHECK-SAME: float [[X:%.*]], float [[Y:%.*]]) {
+; CHECK-NEXT: [[FABS:%.*]] = call nsz float @llvm.fabs.f32(float [[X]])
+; CHECK-NEXT: ret float [[FABS]]
+;
+ %copysign = call float @llvm.copysign.f32(float %x, float %y)
+ %fabs = call nsz float @llvm.fabs.f32(float %copysign)
+ ret float %fabs
+}
+
+define float @fabs_fneg_no_fabs(float %x) {
+; CHECK-LABEL: define float @fabs_fneg_no_fabs(
+; CHECK-SAME: float [[X:%.*]]) {
+; CHECK-NEXT: [[NEG:%.*]] = fneg float [[X]]
+; CHECK-NEXT: ret float [[NEG]]
+;
+ %neg = fneg float %x
+ ret float %neg
+}
+
+define <2 x float> @fabs_fneg_splat_v2f32(<2 x float> %x) {
+; CHECK-LABEL: define <2 x float> @fabs_fneg_splat_v2f32(
+; CHECK-SAME: <2 x float> [[X:%.*]]) {
+; CHECK-NEXT: ret <2 x float> <float 2.000000e+00, float 2.000000e+00>
+;
+ %neg = fneg <2 x float> <float -2.0, float -2.0>
+ %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %neg)
+ ret <2 x float> %fabs
+}
+
+
+define <2 x float> @fabs_fneg_splat_poison_v2f32(<2 x float> %x) {
+; CHECK-LABEL: define <2 x float> @fabs_fneg_splat_poison_v2f32(
+; CHECK-SAME: <2 x float> [[X:%.*]]) {
+; CHECK-NEXT: [[FABS:%.*]] = call <2 x float> @llvm.fabs.v2f32(<2 x float> <float -2.000000e+00, float poison>)
+; CHECK-NEXT: ret <2 x float> [[FABS]]
+;
+ %neg = fneg <2 x float> <float 2.0, float poison>
+ %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %neg)
+ ret <2 x float> %fabs
+}
+
+define <2 x float> @fabs_fneg_non_splat_v2f32(<2 x float> %x) {
+; CHECK-LABEL: define <2 x float> @fabs_fneg_non_splat_v2f32(
+; CHECK-SAME: <2 x float> [[X:%.*]]) {
+; CHECK-NEXT: ret <2 x float> <float 2.000000e+00, float 3.000000e+00>
+;
+ %neg = fneg <2 x float> <float 2.0, float 3.0>
+ %fabs = call <2 x float> @llvm.fabs.v2f32(<2 x float> %neg)
+ ret <2 x float> %fabs
+}
+
+declare void @use(float)
+
+define float @fabs_fneg_multi_use(float %x) {
+; CHECK-LABEL: define float @fabs_fneg_multi_use(
+; CHECK-SAME: float [[X:%.*]]) {
+; CHECK-NEXT: [[NEG:%.*]] = fneg float [[X]]
+; CHECK-NEXT: call void @use(float [[NEG]])
+; CHECK-NEXT: [[FABS:%.*]] = call float @llvm.fabs.f32(float [[X]])
+; CHECK-NEXT: ret float [[FABS]]
+;
+ %neg = fneg float %x
+ call void @use(float %neg)
+ %fabs = call float @llvm.fabs.f32(float %neg)
+ ret float %fabs
+}
+
+
+
generated by cgit v1.1 at 2024-09-17 13:45:21 +0000