1 ; RUN: opt -S -instcombine < %s | FileCheck %s 2 3 declare float @llvm.round.f32(float) #0 4 declare double @llvm.round.f64(double) #0 5 6 ; CHECK-LABEL: @constant_fold_round_f32_01 7 ; CHECK-NEXT: ret float 1.000000e+00 8 define float @constant_fold_round_f32_01() #0 { 9 %x = call float @llvm.round.f32(float 1.25) #0 10 ret float %x 11 } 12 13 ; CHECK-LABEL: @constant_fold_round_f32_02 14 ; CHECK-NEXT: ret float -1.000000e+00 15 define float @constant_fold_round_f32_02() #0 { 16 %x = call float @llvm.round.f32(float -1.25) #0 17 ret float %x 18 } 19 20 ; CHECK-LABEL: @constant_fold_round_f32_03 21 ; CHECK-NEXT: ret float 2.000000e+00 22 define float @constant_fold_round_f32_03() #0 { 23 %x = call float @llvm.round.f32(float 1.5) #0 24 ret float %x 25 } 26 27 ; CHECK-LABEL: @constant_fold_round_f32_04 28 ; CHECK-NEXT: ret float -2.000000e+00 29 define float @constant_fold_round_f32_04() #0 { 30 %x = call float @llvm.round.f32(float -1.5) #0 31 ret float %x 32 } 33 34 ; CHECK-LABEL: @constant_fold_round_f32_05 35 ; CHECK-NEXT: ret float 3.000000e+00 36 define float @constant_fold_round_f32_05() #0 { 37 %x = call float @llvm.round.f32(float 2.75) #0 38 ret float %x 39 } 40 41 ; CHECK-LABEL: @constant_fold_round_f32_06 42 ; CHECK-NEXT: ret float -3.000000e+00 43 define float @constant_fold_round_f32_06() #0 { 44 %x = call float @llvm.round.f32(float -2.75) #0 45 ret float %x 46 } 47 48 ; CHECK-LABEL: @constant_fold_round_f64_01 49 ; CHECK-NEXT: ret double 1.000000e+00 50 define double @constant_fold_round_f64_01() #0 { 51 %x = call double @llvm.round.f64(double 1.3) #0 52 ret double %x 53 } 54 55 ; CHECK-LABEL: @constant_fold_round_f64_02 56 ; CHECK-NEXT: ret double -1.000000e+00 57 define double @constant_fold_round_f64_02() #0 { 58 %x = call double @llvm.round.f64(double -1.3) #0 59 ret double %x 60 } 61 62 ; CHECK-LABEL: @constant_fold_round_f64_03 63 ; CHECK-NEXT: ret double 2.000000e+00 64 define double @constant_fold_round_f64_03() #0 { 65 %x = call double @llvm.round.f64(double 1.5) #0 66 ret double %x 67 } 68 69 ; CHECK-LABEL: @constant_fold_round_f64_04 70 ; CHECK-NEXT: ret double -2.000000e+00 71 define double @constant_fold_round_f64_04() #0 { 72 %x = call double @llvm.round.f64(double -1.5) #0 73 ret double %x 74 } 75 76 ; CHECK-LABEL: @constant_fold_round_f64_05 77 ; CHECK-NEXT: ret double 3.000000e+00 78 define double @constant_fold_round_f64_05() #0 { 79 %x = call double @llvm.round.f64(double 2.7) #0 80 ret double %x 81 } 82 83 ; CHECK-LABEL: @constant_fold_round_f64_06 84 ; CHECK-NEXT: ret double -3.000000e+00 85 define double @constant_fold_round_f64_06() #0 { 86 %x = call double @llvm.round.f64(double -2.7) #0 87 ret double %x 88 } 89 90 attributes #0 = { nounwind readnone } 91
