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annotate llvm/test/Transforms/AggressiveInstCombine/trunc_select_cmp.ll @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
parents
children c4bab56944e8
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150
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1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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2 ; RUN: opt < %s -aggressive-instcombine -S | FileCheck %s
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3 ; RUN: opt < %s -passes=aggressive-instcombine -S | FileCheck %s
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4
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5 define dso_local i16 @cmp_select_sext_const(i8 %a) {
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6 ; CHECK-LABEL: @cmp_select_sext_const(
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7 ; CHECK-NEXT: entry:
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8 ; CHECK-NEXT: [[CONV:%.*]] = sext i8 [[A:%.*]] to i32
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9 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[CONV]], 109
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10 ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 109, i32 [[CONV]]
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11 ; CHECK-NEXT: [[CONV4:%.*]] = trunc i32 [[COND]] to i16
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12 ; CHECK-NEXT: ret i16 [[CONV4]]
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13 ;
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14 entry:
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15 %conv = sext i8 %a to i32
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16 %cmp = icmp slt i32 %conv, 109
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17 %cond = select i1 %cmp, i32 109, i32 %conv
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18 %conv4 = trunc i32 %cond to i16
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19 ret i16 %conv4
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20 }
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21
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22 define dso_local i16 @cmp_select_sext(i8 %a, i8 %b) {
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23 ; CHECK-LABEL: @cmp_select_sext(
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24 ; CHECK-NEXT: entry:
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25 ; CHECK-NEXT: [[CONV:%.*]] = sext i8 [[A:%.*]] to i32
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26 ; CHECK-NEXT: [[CONV2:%.*]] = sext i8 [[B:%.*]] to i32
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27 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[CONV]], [[CONV2]]
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28 ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[CONV2]], i32 [[CONV]]
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29 ; CHECK-NEXT: [[CONV4:%.*]] = trunc i32 [[COND]] to i16
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30 ; CHECK-NEXT: ret i16 [[CONV4]]
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31 ;
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32 entry:
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33 %conv = sext i8 %a to i32
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34 %conv2 = sext i8 %b to i32
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35 %cmp = icmp slt i32 %conv, %conv2
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36 %cond = select i1 %cmp, i32 %conv2, i32 %conv
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37 %conv4 = trunc i32 %cond to i16
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38 ret i16 %conv4
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39 }
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40
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41 define dso_local i16 @cmp_select_zext(i8 %a, i8 %b) {
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42 ; CHECK-LABEL: @cmp_select_zext(
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43 ; CHECK-NEXT: entry:
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44 ; CHECK-NEXT: [[CONV:%.*]] = zext i8 [[A:%.*]] to i32
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45 ; CHECK-NEXT: [[CONV2:%.*]] = zext i8 [[B:%.*]] to i32
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46 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[CONV]], [[CONV2]]
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47 ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[CONV2]], i32 [[CONV]]
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48 ; CHECK-NEXT: [[CONV4:%.*]] = trunc i32 [[COND]] to i16
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49 ; CHECK-NEXT: ret i16 [[CONV4]]
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50 ;
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51 entry:
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52 %conv = zext i8 %a to i32
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53 %conv2 = zext i8 %b to i32
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54 %cmp = icmp slt i32 %conv, %conv2
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55 %cond = select i1 %cmp, i32 %conv2, i32 %conv
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56 %conv4 = trunc i32 %cond to i16
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57 ret i16 %conv4
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58 }
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59
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60 define dso_local i16 @cmp_select_zext_sext(i8 %a, i8 %b) {
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61 ; CHECK-LABEL: @cmp_select_zext_sext(
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62 ; CHECK-NEXT: entry:
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63 ; CHECK-NEXT: [[CONV:%.*]] = zext i8 [[A:%.*]] to i32
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64 ; CHECK-NEXT: [[CONV2:%.*]] = sext i8 [[B:%.*]] to i32
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65 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[CONV]], [[CONV2]]
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66 ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[CONV2]], i32 [[CONV]]
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67 ; CHECK-NEXT: [[CONV4:%.*]] = trunc i32 [[COND]] to i16
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68 ; CHECK-NEXT: ret i16 [[CONV4]]
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69 ;
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70 entry:
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71 %conv = zext i8 %a to i32
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72 %conv2 = sext i8 %b to i32
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73 %cmp = icmp slt i32 %conv, %conv2
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74 %cond = select i1 %cmp, i32 %conv2, i32 %conv
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75 %conv4 = trunc i32 %cond to i16
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76 ret i16 %conv4
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77 }
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78
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79 define dso_local i16 @cmp_select_zext_sext_diffOrigTy(i8 %a, i16 %b) {
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80 ; CHECK-LABEL: @cmp_select_zext_sext_diffOrigTy(
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81 ; CHECK-NEXT: entry:
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82 ; CHECK-NEXT: [[CONV:%.*]] = zext i8 [[A:%.*]] to i32
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83 ; CHECK-NEXT: [[CONV2:%.*]] = sext i16 [[B:%.*]] to i32
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84 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[CONV]], [[CONV2]]
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85 ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[CONV2]], i32 [[CONV]]
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86 ; CHECK-NEXT: [[CONV4:%.*]] = trunc i32 [[COND]] to i16
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87 ; CHECK-NEXT: ret i16 [[CONV4]]
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88 ;
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89 entry:
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90 %conv = zext i8 %a to i32
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91 %conv2 = sext i16 %b to i32
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92 %cmp = icmp slt i32 %conv, %conv2
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93 %cond = select i1 %cmp, i32 %conv2, i32 %conv
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94 %conv4 = trunc i32 %cond to i16
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95 ret i16 %conv4
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96 }
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97
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98 define dso_local i16 @my_abs_sext(i8 %a) {
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99 ; CHECK-LABEL: @my_abs_sext(
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100 ; CHECK-NEXT: entry:
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101 ; CHECK-NEXT: [[CONV:%.*]] = sext i8 [[A:%.*]] to i32
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102 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[CONV]], 0
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103 ; CHECK-NEXT: [[SUB:%.*]] = sub nsw i32 0, [[CONV]]
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104 ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[SUB]], i32 [[CONV]]
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105 ; CHECK-NEXT: [[CONV4:%.*]] = trunc i32 [[COND]] to i16
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106 ; CHECK-NEXT: ret i16 [[CONV4]]
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107 ;
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108 entry:
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109 %conv = sext i8 %a to i32
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110 %cmp = icmp slt i32 %conv, 0
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111 %sub = sub nsw i32 0, %conv
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112 %cond = select i1 %cmp, i32 %sub, i32 %conv
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113 %conv4 = trunc i32 %cond to i16
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114 ret i16 %conv4
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115 }
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116
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117 define dso_local i16 @my_abs_zext(i8 %a) {
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118 ; CHECK-LABEL: @my_abs_zext(
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119 ; CHECK-NEXT: entry:
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120 ; CHECK-NEXT: [[CONV:%.*]] = zext i8 [[A:%.*]] to i32
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121 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[CONV]], 0
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122 ; CHECK-NEXT: [[SUB:%.*]] = sub nsw i32 0, [[CONV]]
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123 ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 [[SUB]], i32 [[CONV]]
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124 ; CHECK-NEXT: [[CONV4:%.*]] = trunc i32 [[COND]] to i16
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125 ; CHECK-NEXT: ret i16 [[CONV4]]
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126 ;
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127 entry:
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128 %conv = zext i8 %a to i32
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129 %cmp = icmp slt i32 %conv, 0
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130 %sub = sub nsw i32 0, %conv
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131 %cond = select i1 %cmp, i32 %sub, i32 %conv
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132 %conv4 = trunc i32 %cond to i16
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133 ret i16 %conv4
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134 }
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135
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136 define dso_local i16 @select_sext(i8 %a, i1 %cond) {
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137 ; CHECK-LABEL: @select_sext(
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138 ; CHECK-NEXT: entry:
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139 ; CHECK-NEXT: [[CONV:%.*]] = sext i8 [[A:%.*]] to i16
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140 ; CHECK-NEXT: [[SUB:%.*]] = sub i16 0, [[CONV]]
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141 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i16 [[SUB]], i16 [[CONV]]
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142 ; CHECK-NEXT: ret i16 [[SEL]]
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143 ;
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144 entry:
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145 %conv = sext i8 %a to i32
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146 %sub = sub nsw i32 0, %conv
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147 %sel = select i1 %cond, i32 %sub, i32 %conv
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148 %conv4 = trunc i32 %sel to i16
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149 ret i16 %conv4
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150 }
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151
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152 define dso_local i16 @select_zext(i8 %a, i1 %cond) {
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153 ; CHECK-LABEL: @select_zext(
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154 ; CHECK-NEXT: entry:
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155 ; CHECK-NEXT: [[CONV:%.*]] = zext i8 [[A:%.*]] to i16
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156 ; CHECK-NEXT: [[SUB:%.*]] = sub i16 0, [[CONV]]
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157 ; CHECK-NEXT: [[SEL:%.*]] = select i1 [[COND:%.*]], i16 [[SUB]], i16 [[CONV]]
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158 ; CHECK-NEXT: ret i16 [[SEL]]
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159 ;
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160 entry:
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161 %conv = zext i8 %a to i32
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162 %sub = sub nsw i32 0, %conv
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163 %sel = select i1 %cond, i32 %sub, i32 %conv
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164 %conv4 = trunc i32 %sel to i16
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165 ret i16 %conv4
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166 }
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167
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168 define i16 @cmp_select_signed_const_i16Const_noTransformation(i8 %a) {
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169 ; CHECK-LABEL: @cmp_select_signed_const_i16Const_noTransformation(
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170 ; CHECK-NEXT: [[CONV:%.*]] = sext i8 [[A:%.*]] to i32
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171 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[CONV]], 32768
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172 ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 32768, i32 [[CONV]]
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173 ; CHECK-NEXT: [[CONV4:%.*]] = trunc i32 [[COND]] to i16
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174 ; CHECK-NEXT: ret i16 [[CONV4]]
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175 ;
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176 %conv = sext i8 %a to i32
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177 %cmp = icmp slt i32 %conv, 32768
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178 %cond = select i1 %cmp, i32 32768, i32 %conv
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179 %conv4 = trunc i32 %cond to i16
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180 ret i16 %conv4
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181 }
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182
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183 define i16 @cmp_select_unsigned_const_i16Const(i8 %a) {
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184 ; CHECK-LABEL: @cmp_select_unsigned_const_i16Const(
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185 ; CHECK-NEXT: [[CONV:%.*]] = zext i8 [[A:%.*]] to i32
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186 ; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[CONV]], 32768
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187 ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 32768, i32 [[CONV]]
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188 ; CHECK-NEXT: [[CONV4:%.*]] = trunc i32 [[COND]] to i16
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189 ; CHECK-NEXT: ret i16 [[CONV4]]
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190 ;
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191 %conv = zext i8 %a to i32
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192 %cmp = icmp ult i32 %conv, 32768
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193 %cond = select i1 %cmp, i32 32768, i32 %conv
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194 %conv4 = trunc i32 %cond to i16
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195 ret i16 %conv4
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196 }
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197
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198 define i16 @cmp_select_unsigned_const_i16Const_noTransformation(i8 %a) {
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199 ; CHECK-LABEL: @cmp_select_unsigned_const_i16Const_noTransformation(
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200 ; CHECK-NEXT: [[CONV:%.*]] = zext i8 [[A:%.*]] to i32
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201 ; CHECK-NEXT: [[CMP:%.*]] = icmp ult i32 [[CONV]], 65536
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202 ; CHECK-NEXT: [[COND:%.*]] = select i1 [[CMP]], i32 65536, i32 [[CONV]]
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203 ; CHECK-NEXT: [[CONV4:%.*]] = trunc i32 [[COND]] to i16
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204 ; CHECK-NEXT: ret i16 [[CONV4]]
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205 ;
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206 %conv = zext i8 %a to i32
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207 %cmp = icmp ult i32 %conv, 65536
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208 %cond = select i1 %cmp, i32 65536, i32 %conv
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209 %conv4 = trunc i32 %cond to i16
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210 ret i16 %conv4
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211 }
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212