1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; RUN: opt -passes=instcombine -S < %s | FileCheck %s
4 declare double @llvm.fabs.f64(double)
5 declare float @llvm.fabs.f32(float)
6 declare <4 x double> @llvm.fabs.v4f64(<4 x double>)
7 declare void @use(double)
9 declare double @llvm.copysign.f64(double, double)
10 declare float @llvm.copysign.f32(float, float)
12 define double @fabs_copysign(double %x) {
13 ; CHECK-LABEL: @fabs_copysign(
14 ; CHECK-NEXT: [[DIV:%.*]] = call nnan ninf double @llvm.copysign.f64(double 1.000000e+00, double [[X:%.*]])
15 ; CHECK-NEXT: ret double [[DIV]]
17 %f = tail call double @llvm.fabs.f64(double %x)
18 %div = fdiv nnan ninf double %x, %f
22 define double @fabs_copysign_commuted(double %x) {
23 ; CHECK-LABEL: @fabs_copysign_commuted(
24 ; CHECK-NEXT: [[DIV:%.*]] = call nnan ninf double @llvm.copysign.f64(double 1.000000e+00, double [[X:%.*]])
25 ; CHECK-NEXT: ret double [[DIV]]
27 %f = tail call double @llvm.fabs.f64(double %x)
28 %div = fdiv nnan ninf double %f, %x
32 define <4 x double> @fabs_copysign_vec(<4 x double> %x) {
33 ; CHECK-LABEL: @fabs_copysign_vec(
34 ; CHECK-NEXT: [[DIV:%.*]] = call nnan ninf <4 x double> @llvm.copysign.v4f64(<4 x double> splat (double 1.000000e+00), <4 x double> [[X:%.*]])
35 ; CHECK-NEXT: ret <4 x double> [[DIV]]
37 %f = call <4 x double> @llvm.fabs.v4f64(<4 x double> %x)
38 %div = fdiv nnan ninf <4 x double> %x, %f
42 define <4 x double> @fabs_copysign_vec_commuted(<4 x double> %x) {
43 ; CHECK-LABEL: @fabs_copysign_vec_commuted(
44 ; CHECK-NEXT: [[DIV:%.*]] = call nnan ninf <4 x double> @llvm.copysign.v4f64(<4 x double> splat (double 1.000000e+00), <4 x double> [[X:%.*]])
45 ; CHECK-NEXT: ret <4 x double> [[DIV]]
47 %f = call <4 x double> @llvm.fabs.v4f64(<4 x double> %x)
48 %div = fdiv nnan ninf <4 x double> %f, %x
52 define float @fabs_copysignf(float %x) {
53 ; CHECK-LABEL: @fabs_copysignf(
54 ; CHECK-NEXT: [[DIV:%.*]] = call nnan ninf float @llvm.copysign.f32(float 1.000000e+00, float [[X:%.*]])
55 ; CHECK-NEXT: ret float [[DIV]]
57 %f = tail call float @llvm.fabs.f32(float %x)
58 %div = fdiv nnan ninf float %x, %f
62 define double @fabs_copysign_use(double %x) {
63 ; CHECK-LABEL: @fabs_copysign_use(
64 ; CHECK-NEXT: [[F:%.*]] = tail call double @llvm.fabs.f64(double [[X:%.*]])
65 ; CHECK-NEXT: call void @use(double [[F]])
66 ; CHECK-NEXT: [[DIV:%.*]] = call nnan ninf double @llvm.copysign.f64(double 1.000000e+00, double [[X]])
67 ; CHECK-NEXT: ret double [[DIV]]
69 %f = tail call double @llvm.fabs.f64(double %x)
70 call void @use(double %f)
71 %div = fdiv nnan ninf double %x, %f
77 define double @fabs_copysign_mismatch(double %x, double %y) {
78 ; CHECK-LABEL: @fabs_copysign_mismatch(
79 ; CHECK-NEXT: [[F:%.*]] = tail call double @llvm.fabs.f64(double [[Y:%.*]])
80 ; CHECK-NEXT: [[DIV:%.*]] = fdiv double [[X:%.*]], [[F]]
81 ; CHECK-NEXT: ret double [[DIV]]
83 %f = tail call double @llvm.fabs.f64(double %y)
84 %div = fdiv double %x, %f
88 define double @fabs_copysign_commuted_mismatch(double %x, double %y) {
89 ; CHECK-LABEL: @fabs_copysign_commuted_mismatch(
90 ; CHECK-NEXT: [[F:%.*]] = tail call double @llvm.fabs.f64(double [[Y:%.*]])
91 ; CHECK-NEXT: [[DIV:%.*]] = fdiv double [[F]], [[X:%.*]]
92 ; CHECK-NEXT: ret double [[DIV]]
94 %f = tail call double @llvm.fabs.f64(double %y)
95 %div = fdiv double %f, %x
99 define double @fabs_copysign_no_nnan(double %x) {
100 ; CHECK-LABEL: @fabs_copysign_no_nnan(
101 ; CHECK-NEXT: [[F:%.*]] = tail call double @llvm.fabs.f64(double [[X:%.*]])
102 ; CHECK-NEXT: [[DIV:%.*]] = fdiv ninf double [[X]], [[F]]
103 ; CHECK-NEXT: ret double [[DIV]]
105 %f = tail call double @llvm.fabs.f64(double %x)
106 %div = fdiv ninf double %x, %f
110 define double @fabs_copysign_no_ninf(double %x) {
111 ; CHECK-LABEL: @fabs_copysign_no_ninf(
112 ; CHECK-NEXT: [[F:%.*]] = tail call double @llvm.fabs.f64(double [[X:%.*]])
113 ; CHECK-NEXT: [[DIV:%.*]] = fdiv nnan double [[X]], [[F]]
114 ; CHECK-NEXT: ret double [[DIV]]
116 %f = tail call double @llvm.fabs.f64(double %x)
117 %div = fdiv nnan double %x, %f