1; RUN: opt -S -instcombine < %s | FileCheck %s 2 3declare float @llvm.round.f32(float) #0 4declare double @llvm.round.f64(double) #0 5 6; CHECK-LABEL: @constant_fold_round_f32_01 7; CHECK-NEXT: ret float 1.000000e+00 8define 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 15define 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 22define 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 29define 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 36define 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 43define 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 50define 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 57define 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 64define 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 71define 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 78define 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 85define double @constant_fold_round_f64_06() #0 { 86 %x = call double @llvm.round.f64(double -2.7) #0 87 ret double %x 88} 89 90attributes #0 = { nounwind readnone } 91