1 ; RUN: opt -S -instcombine < %s | FileCheck %s 2 3 declare float @llvm.fma.f32(float, float, float) #0 4 declare float @llvm.fmuladd.f32(float, float, float) #0 5 declare <4 x float> @llvm.fma.v4f32(<4 x float>, <4 x float>, <4 x float>) #0 6 7 declare double @llvm.fma.f64(double, double, double) #0 8 declare double @llvm.fmuladd.f64(double, double, double) #0 9 10 declare double @llvm.sqrt.f64(double) #0 11 12 13 ; CHECK-LABEL: @constant_fold_fma_f32 14 ; CHECK-NEXT: ret float 6.000000e+00 15 define float @constant_fold_fma_f32() #0 { 16 %x = call float @llvm.fma.f32(float 1.0, float 2.0, float 4.0) #0 17 ret float %x 18 } 19 20 ; CHECK-LABEL: @constant_fold_fma_v4f32 21 ; CHECK-NEXT: ret <4 x float> <float 1.200000e+01, float 1.400000e+01, float 1.600000e+01, float 1.800000e+01> 22 define <4 x float> @constant_fold_fma_v4f32() #0 { 23 %x = call <4 x float> @llvm.fma.v4f32(<4 x float> <float 1.0, float 2.0, float 3.0, float 4.0>, <4 x float> <float 2.0, float 2.0, float 2.0, float 2.0>, <4 x float> <float 10.0, float 10.0, float 10.0, float 10.0>) 24 ret <4 x float> %x 25 } 26 27 ; CHECK-LABEL: @constant_fold_fmuladd_f32 28 ; CHECK-NEXT: ret float 6.000000e+00 29 define float @constant_fold_fmuladd_f32() #0 { 30 %x = call float @llvm.fmuladd.f32(float 1.0, float 2.0, float 4.0) #0 31 ret float %x 32 } 33 34 ; CHECK-LABEL: @constant_fold_fma_f64 35 ; CHECK-NEXT: ret double 6.000000e+00 36 define double @constant_fold_fma_f64() #0 { 37 %x = call double @llvm.fma.f64(double 1.0, double 2.0, double 4.0) #0 38 ret double %x 39 } 40 41 ; CHECK-LABEL: @constant_fold_fmuladd_f64 42 ; CHECK-NEXT: ret double 6.000000e+00 43 define double @constant_fold_fmuladd_f64() #0 { 44 %x = call double @llvm.fmuladd.f64(double 1.0, double 2.0, double 4.0) #0 45 ret double %x 46 } 47 48 ; The sqrt intrinsic is undefined for negative inputs besides -0.0. 49 ; CHECK-LABEL: @bad_sqrt 50 ; CHECK-NEXT: ret double undef 51 define double @bad_sqrt() { 52 %x = call double @llvm.sqrt.f64(double -2.000000e+00) 53 ret double %x 54 } 55 56 attributes #0 = { nounwind readnone } 57
