1 ; RUN: opt -S -instcombine < %s | FileCheck %s 2 3 declare float @llvm.maxnum.f32(float, float) #0 4 declare float @llvm.maxnum.v2f32(<2 x float>, <2 x float>) #0 5 declare <4 x float> @llvm.maxnum.v4f32(<4 x float>, <4 x float>) #0 6 7 declare double @llvm.maxnum.f64(double, double) #0 8 declare <2 x double> @llvm.maxnum.v2f64(<2 x double>, <2 x double>) #0 9 10 ; CHECK-LABEL: @constant_fold_maxnum_f32 11 ; CHECK-NEXT: ret float 2.000000e+00 12 define float @constant_fold_maxnum_f32() #0 { 13 %x = call float @llvm.maxnum.f32(float 1.0, float 2.0) #0 14 ret float %x 15 } 16 17 ; CHECK-LABEL: @constant_fold_maxnum_f32_inv 18 ; CHECK-NEXT: ret float 2.000000e+00 19 define float @constant_fold_maxnum_f32_inv() #0 { 20 %x = call float @llvm.maxnum.f32(float 2.0, float 1.0) #0 21 ret float %x 22 } 23 24 ; CHECK-LABEL: @constant_fold_maxnum_f32_nan0 25 ; CHECK-NEXT: ret float 2.000000e+00 26 define float @constant_fold_maxnum_f32_nan0() #0 { 27 %x = call float @llvm.maxnum.f32(float 0x7FF8000000000000, float 2.0) #0 28 ret float %x 29 } 30 31 ; CHECK-LABEL: @constant_fold_maxnum_f32_nan1 32 ; CHECK-NEXT: ret float 2.000000e+00 33 define float @constant_fold_maxnum_f32_nan1() #0 { 34 %x = call float @llvm.maxnum.f32(float 2.0, float 0x7FF8000000000000) #0 35 ret float %x 36 } 37 38 ; CHECK-LABEL: @constant_fold_maxnum_f32_nan_nan 39 ; CHECK-NEXT: ret float 0x7FF8000000000000 40 define float @constant_fold_maxnum_f32_nan_nan() #0 { 41 %x = call float @llvm.maxnum.f32(float 0x7FF8000000000000, float 0x7FF8000000000000) #0 42 ret float %x 43 } 44 45 ; CHECK-LABEL: @constant_fold_maxnum_f32_p0_p0 46 ; CHECK-NEXT: ret float 0.000000e+00 47 define float @constant_fold_maxnum_f32_p0_p0() #0 { 48 %x = call float @llvm.maxnum.f32(float 0.0, float 0.0) #0 49 ret float %x 50 } 51 52 ; CHECK-LABEL: @constant_fold_maxnum_f32_p0_n0 53 ; CHECK-NEXT: ret float 0.000000e+00 54 define float @constant_fold_maxnum_f32_p0_n0() #0 { 55 %x = call float @llvm.maxnum.f32(float 0.0, float -0.0) #0 56 ret float %x 57 } 58 59 ; CHECK-LABEL: @constant_fold_maxnum_f32_n0_p0 60 ; CHECK-NEXT: ret float -0.000000e+00 61 define float @constant_fold_maxnum_f32_n0_p0() #0 { 62 %x = call float @llvm.maxnum.f32(float -0.0, float 0.0) #0 63 ret float %x 64 } 65 66 ; CHECK-LABEL: @constant_fold_maxnum_f32_n0_n0 67 ; CHECK-NEXT: ret float -0.000000e+00 68 define float @constant_fold_maxnum_f32_n0_n0() #0 { 69 %x = call float @llvm.maxnum.f32(float -0.0, float -0.0) #0 70 ret float %x 71 } 72 73 ; CHECK-LABEL: @constant_fold_maxnum_v4f32 74 ; CHECK-NEXT: ret <4 x float> <float 2.000000e+00, float 8.000000e+00, float 1.000000e+01, float 9.000000e+00> 75 define <4 x float> @constant_fold_maxnum_v4f32() #0 { 76 %x = call <4 x float> @llvm.maxnum.v4f32(<4 x float> <float 1.0, float 8.0, float 3.0, float 9.0>, <4 x float> <float 2.0, float 2.0, float 10.0, float 5.0>) 77 ret <4 x float> %x 78 } 79 80 ; CHECK-LABEL: @constant_fold_maxnum_f64 81 ; CHECK-NEXT: ret double 2.000000e+00 82 define double @constant_fold_maxnum_f64() #0 { 83 %x = call double @llvm.maxnum.f64(double 1.0, double 2.0) #0 84 ret double %x 85 } 86 87 ; CHECK-LABEL: @constant_fold_maxnum_f64_nan0 88 ; CHECK-NEXT: ret double 2.000000e+00 89 define double @constant_fold_maxnum_f64_nan0() #0 { 90 %x = call double @llvm.maxnum.f64(double 0x7FF8000000000000, double 2.0) #0 91 ret double %x 92 } 93 94 ; CHECK-LABEL: @constant_fold_maxnum_f64_nan1 95 ; CHECK-NEXT: ret double 2.000000e+00 96 define double @constant_fold_maxnum_f64_nan1() #0 { 97 %x = call double @llvm.maxnum.f64(double 2.0, double 0x7FF8000000000000) #0 98 ret double %x 99 } 100 101 ; CHECK-LABEL: @constant_fold_maxnum_f64_nan_nan 102 ; CHECK-NEXT: ret double 0x7FF8000000000000 103 define double @constant_fold_maxnum_f64_nan_nan() #0 { 104 %x = call double @llvm.maxnum.f64(double 0x7FF8000000000000, double 0x7FF8000000000000) #0 105 ret double %x 106 } 107 108 ; CHECK-LABEL: @canonicalize_constant_maxnum_f32 109 ; CHECK: call float @llvm.maxnum.f32(float %x, float 1.000000e+00) 110 define float @canonicalize_constant_maxnum_f32(float %x) #0 { 111 %y = call float @llvm.maxnum.f32(float 1.0, float %x) #0 112 ret float %y 113 } 114 115 ; CHECK-LABEL: @noop_maxnum_f32 116 ; CHECK-NEXT: ret float %x 117 define float @noop_maxnum_f32(float %x) #0 { 118 %y = call float @llvm.maxnum.f32(float %x, float %x) #0 119 ret float %y 120 } 121 122 ; CHECK-LABEL: @maxnum_f32_nan_val 123 ; CHECK-NEXT: ret float %x 124 define float @maxnum_f32_nan_val(float %x) #0 { 125 %y = call float @llvm.maxnum.f32(float 0x7FF8000000000000, float %x) #0 126 ret float %y 127 } 128 129 ; CHECK-LABEL: @maxnum_f32_val_nan 130 ; CHECK-NEXT: ret float %x 131 define float @maxnum_f32_val_nan(float %x) #0 { 132 %y = call float @llvm.maxnum.f32(float %x, float 0x7FF8000000000000) #0 133 ret float %y 134 } 135 136 ; CHECK-LABEL: @fold_maxnum_f32_undef_undef 137 ; CHECK-NEXT: ret float undef 138 define float @fold_maxnum_f32_undef_undef(float %x) nounwind { 139 %val = call float @llvm.maxnum.f32(float undef, float undef) #0 140 ret float %val 141 } 142 143 ; CHECK-LABEL: @fold_maxnum_f32_val_undef 144 ; CHECK-NEXT: ret float %x 145 define float @fold_maxnum_f32_val_undef(float %x) nounwind { 146 %val = call float @llvm.maxnum.f32(float %x, float undef) #0 147 ret float %val 148 } 149 150 ; CHECK-LABEL: @fold_maxnum_f32_undef_val 151 ; CHECK-NEXT: ret float %x 152 define float @fold_maxnum_f32_undef_val(float %x) nounwind { 153 %val = call float @llvm.maxnum.f32(float undef, float %x) #0 154 ret float %val 155 } 156 157 ; CHECK-LABEL: @maxnum_x_maxnum_x_y 158 ; CHECK-NEXT: call float @llvm.maxnum.f32(float %x, float %y) 159 ; CHECK-NEXT: ret float 160 define float @maxnum_x_maxnum_x_y(float %x, float %y) #0 { 161 %a = call float @llvm.maxnum.f32(float %x, float %y) #0 162 %b = call float @llvm.maxnum.f32(float %x, float %a) #0 163 ret float %b 164 } 165 166 ; CHECK-LABEL: @maxnum_y_maxnum_x_y 167 ; CHECK-NEXT: call float @llvm.maxnum.f32(float %x, float %y) 168 ; CHECK-NEXT: ret float 169 define float @maxnum_y_maxnum_x_y(float %x, float %y) #0 { 170 %a = call float @llvm.maxnum.f32(float %x, float %y) #0 171 %b = call float @llvm.maxnum.f32(float %y, float %a) #0 172 ret float %b 173 } 174 175 ; CHECK-LABEL: @maxnum_z_maxnum_x_y 176 ; CHECK-NEXT: call float @llvm.maxnum.f32(float %x, float %y) 177 ; CHECK-NEXT: call float @llvm.maxnum.f32(float %z, float %a) 178 ; CHECK-NEXT: ret float 179 define float @maxnum_z_maxnum_x_y(float %x, float %y, float %z) #0 { 180 %a = call float @llvm.maxnum.f32(float %x, float %y) #0 181 %b = call float @llvm.maxnum.f32(float %z, float %a) #0 182 ret float %b 183 } 184 185 ; CHECK-LABEL: @maxnum_maxnum_x_y_z 186 ; CHECK-NEXT: call float @llvm.maxnum.f32(float %x, float %y) 187 ; CHECK-NEXT: call float @llvm.maxnum.f32(float %a, float %z) 188 ; CHECK-NEXT: ret float 189 define float @maxnum_maxnum_x_y_z(float %x, float %y, float %z) #0 { 190 %a = call float @llvm.maxnum.f32(float %x, float %y) #0 191 %b = call float @llvm.maxnum.f32(float %a, float %z) #0 192 ret float %b 193 } 194 195 ; CHECK-LABEL: @maxnum4 196 ; CHECK-NEXT: call float @llvm.maxnum.f32(float %x, float %y) 197 ; CHECK-NEXT: call float @llvm.maxnum.f32(float %z, float %w) 198 ; CHECK-NEXT: call float @llvm.maxnum.f32(float %a, float %b) 199 ; CHECK-NEXT: ret float 200 define float @maxnum4(float %x, float %y, float %z, float %w) #0 { 201 %a = call float @llvm.maxnum.f32(float %x, float %y) #0 202 %b = call float @llvm.maxnum.f32(float %z, float %w) #0 203 %c = call float @llvm.maxnum.f32(float %a, float %b) #0 204 ret float %c 205 } 206 207 ; CHECK-LABEL: @fold_maxnum_f32_inf_val 208 ; CHECK-NEXT: ret float 0x7FF0000000000000 209 define float @fold_maxnum_f32_inf_val(float %x) nounwind { 210 %val = call float @llvm.maxnum.f32(float 0x7FF0000000000000, float %x) #0 211 ret float %val 212 } 213 214 ; CHECK-LABEL: @fold_maxnum_f32_neginf_val 215 ; CHECK-NEXT: call float @llvm.maxnum.f32(float %x, float 0xFFF0000000000000) 216 ; CHECK-NEXT: ret float 217 define float @fold_maxnum_f32_neginf_val(float %x) nounwind { 218 %val = call float @llvm.maxnum.f32(float 0xFFF0000000000000, float %x) #0 219 ret float %val 220 } 221 222 attributes #0 = { nounwind readnone } 223
