| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -instcombine -S < %s | FileCheck %s |
| |
| declare double @llvm.fabs.f64(double) |
| declare float @llvm.fabs.f32(float) |
| declare <4 x double> @llvm.fabs.v4f64(<4 x double>) |
| declare void @use(double) |
| |
| declare double @llvm.copysign.f64(double, double) |
| declare float @llvm.copysign.f32(float, float) |
| |
| define double @fabs_copysign(double %x) { |
| ; CHECK-LABEL: @fabs_copysign( |
| ; CHECK-NEXT: [[TMP1:%.*]] = call nnan ninf double @llvm.copysign.f64(double 1.000000e+00, double [[X:%.*]]) |
| ; CHECK-NEXT: ret double [[TMP1]] |
| ; |
| %f = tail call double @llvm.fabs.f64(double %x) |
| %div = fdiv nnan ninf double %x, %f |
| ret double %div |
| } |
| |
| define double @fabs_copysign_commuted(double %x) { |
| ; CHECK-LABEL: @fabs_copysign_commuted( |
| ; CHECK-NEXT: [[TMP1:%.*]] = call nnan ninf double @llvm.copysign.f64(double 1.000000e+00, double [[X:%.*]]) |
| ; CHECK-NEXT: ret double [[TMP1]] |
| ; |
| %f = tail call double @llvm.fabs.f64(double %x) |
| %div = fdiv nnan ninf double %f, %x |
| ret double %div |
| } |
| |
| define <4 x double> @fabs_copysign_vec(<4 x double> %x) { |
| ; CHECK-LABEL: @fabs_copysign_vec( |
| ; CHECK-NEXT: [[TMP1:%.*]] = call nnan ninf <4 x double> @llvm.copysign.v4f64(<4 x double> <double 1.000000e+00, double 1.000000e+00, double 1.000000e+00, double 1.000000e+00>, <4 x double> [[X:%.*]]) |
| ; CHECK-NEXT: ret <4 x double> [[TMP1]] |
| ; |
| %f = call <4 x double> @llvm.fabs.v4f64(<4 x double> %x) |
| %div = fdiv nnan ninf <4 x double> %x, %f |
| ret <4 x double> %div |
| } |
| |
| define <4 x double> @fabs_copysign_vec_commuted(<4 x double> %x) { |
| ; CHECK-LABEL: @fabs_copysign_vec_commuted( |
| ; CHECK-NEXT: [[TMP1:%.*]] = call nnan ninf <4 x double> @llvm.copysign.v4f64(<4 x double> <double 1.000000e+00, double 1.000000e+00, double 1.000000e+00, double 1.000000e+00>, <4 x double> [[X:%.*]]) |
| ; CHECK-NEXT: ret <4 x double> [[TMP1]] |
| ; |
| %f = call <4 x double> @llvm.fabs.v4f64(<4 x double> %x) |
| %div = fdiv nnan ninf <4 x double> %f, %x |
| ret <4 x double> %div |
| } |
| |
| define float @fabs_copysignf(float %x) { |
| ; CHECK-LABEL: @fabs_copysignf( |
| ; CHECK-NEXT: [[TMP1:%.*]] = call nnan ninf float @llvm.copysign.f32(float 1.000000e+00, float [[X:%.*]]) |
| ; CHECK-NEXT: ret float [[TMP1]] |
| ; |
| %f = tail call float @llvm.fabs.f32(float %x) |
| %div = fdiv nnan ninf float %x, %f |
| ret float %div |
| } |
| |
| define double @fabs_copysign_use(double %x) { |
| ; CHECK-LABEL: @fabs_copysign_use( |
| ; CHECK-NEXT: [[F:%.*]] = tail call double @llvm.fabs.f64(double [[X:%.*]]) |
| ; CHECK-NEXT: call void @use(double [[F]]) |
| ; CHECK-NEXT: [[TMP1:%.*]] = call nnan ninf double @llvm.copysign.f64(double 1.000000e+00, double [[X]]) |
| ; CHECK-NEXT: ret double [[TMP1]] |
| ; |
| %f = tail call double @llvm.fabs.f64(double %x) |
| call void @use(double %f) |
| %div = fdiv nnan ninf double %x, %f |
| ret double %div |
| } |
| |
| ; Negative tests |
| |
| define double @fabs_copysign_mismatch(double %x, double %y) { |
| ; CHECK-LABEL: @fabs_copysign_mismatch( |
| ; CHECK-NEXT: [[F:%.*]] = tail call double @llvm.fabs.f64(double [[Y:%.*]]) |
| ; CHECK-NEXT: [[DIV:%.*]] = fdiv double [[X:%.*]], [[F]] |
| ; CHECK-NEXT: ret double [[DIV]] |
| ; |
| %f = tail call double @llvm.fabs.f64(double %y) |
| %div = fdiv double %x, %f |
| ret double %div |
| } |
| |
| define double @fabs_copysign_commuted_mismatch(double %x, double %y) { |
| ; CHECK-LABEL: @fabs_copysign_commuted_mismatch( |
| ; CHECK-NEXT: [[F:%.*]] = tail call double @llvm.fabs.f64(double [[Y:%.*]]) |
| ; CHECK-NEXT: [[DIV:%.*]] = fdiv double [[F]], [[X:%.*]] |
| ; CHECK-NEXT: ret double [[DIV]] |
| ; |
| %f = tail call double @llvm.fabs.f64(double %y) |
| %div = fdiv double %f, %x |
| ret double %div |
| } |
| |
| define double @fabs_copysign_no_nnan(double %x) { |
| ; CHECK-LABEL: @fabs_copysign_no_nnan( |
| ; CHECK-NEXT: [[F:%.*]] = tail call double @llvm.fabs.f64(double [[X:%.*]]) |
| ; CHECK-NEXT: [[DIV:%.*]] = fdiv ninf double [[X]], [[F]] |
| ; CHECK-NEXT: ret double [[DIV]] |
| ; |
| %f = tail call double @llvm.fabs.f64(double %x) |
| %div = fdiv ninf double %x, %f |
| ret double %div |
| } |
| |
| define double @fabs_copysign_no_ninf(double %x) { |
| ; CHECK-LABEL: @fabs_copysign_no_ninf( |
| ; CHECK-NEXT: [[F:%.*]] = tail call double @llvm.fabs.f64(double [[X:%.*]]) |
| ; CHECK-NEXT: [[DIV:%.*]] = fdiv nnan double [[X]], [[F]] |
| ; CHECK-NEXT: ret double [[DIV]] |
| ; |
| %f = tail call double @llvm.fabs.f64(double %x) |
| %div = fdiv nnan double %x, %f |
| ret double %div |
| } |