1 // RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o - | FileCheck %s 2 3 // rdar://problem/9246208 4 5 // Basic test. 6 namespace test0 { 7 struct A { 8 A(); 9 int x; 10 }; 11 12 typedef A elt; 13 14 // CHECK: define [[A:%.*]]* @_ZN5test04testEs(i16 signext 15 // CHECK: [[N:%.*]] = sext i16 {{%.*}} to i32 16 // CHECK-NEXT: [[T0:%.*]] = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 [[N]], i32 4) 17 // CHECK-NEXT: [[T1:%.*]] = extractvalue { i32, i1 } [[T0]], 1 18 // CHECK-NEXT: [[T2:%.*]] = extractvalue { i32, i1 } [[T0]], 0 19 // CHECK-NEXT: [[T3:%.*]] = select i1 [[T1]], i32 -1, i32 [[T2]] 20 // CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T3]]) 21 // CHECK: getelementptr inbounds {{.*}}, i32 [[N]] 22 elt *test(short s) { 23 return new elt[s]; 24 } 25 } 26 27 // test0 with a nested array. 28 namespace test1 { 29 struct A { 30 A(); 31 int x; 32 }; 33 34 typedef A elt[100]; 35 36 // CHECK: define [100 x [[A:%.*]]]* @_ZN5test14testEs(i16 signext 37 // CHECK: [[N:%.*]] = sext i16 {{%.*}} to i32 38 // CHECK-NEXT: [[T0:%.*]] = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 [[N]], i32 400) 39 // CHECK-NEXT: [[T1:%.*]] = extractvalue { i32, i1 } [[T0]], 1 40 // CHECK-NEXT: [[T2:%.*]] = extractvalue { i32, i1 } [[T0]], 0 41 // CHECK-NEXT: [[T3:%.*]] = mul i32 [[N]], 100 42 // CHECK-NEXT: [[T4:%.*]] = select i1 [[T1]], i32 -1, i32 [[T2]] 43 // CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T4]]) 44 // CHECK: getelementptr inbounds {{.*}}, i32 [[T3]] 45 elt *test(short s) { 46 return new elt[s]; 47 } 48 } 49 50 // test1 with an array cookie. 51 namespace test2 { 52 struct A { 53 A(); 54 ~A(); 55 int x; 56 }; 57 58 typedef A elt[100]; 59 60 // CHECK: define [100 x [[A:%.*]]]* @_ZN5test24testEs(i16 signext 61 // CHECK: [[N:%.*]] = sext i16 {{%.*}} to i32 62 // CHECK-NEXT: [[T0:%.*]] = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 [[N]], i32 400) 63 // CHECK-NEXT: [[T1:%.*]] = extractvalue { i32, i1 } [[T0]], 1 64 // CHECK-NEXT: [[T2:%.*]] = extractvalue { i32, i1 } [[T0]], 0 65 // CHECK-NEXT: [[T3:%.*]] = mul i32 [[N]], 100 66 // CHECK-NEXT: [[T4:%.*]] = call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 [[T2]], i32 4) 67 // CHECK-NEXT: [[T5:%.*]] = extractvalue { i32, i1 } [[T4]], 1 68 // CHECK-NEXT: [[T6:%.*]] = or i1 [[T1]], [[T5]] 69 // CHECK-NEXT: [[T7:%.*]] = extractvalue { i32, i1 } [[T4]], 0 70 // CHECK-NEXT: [[T8:%.*]] = select i1 [[T6]], i32 -1, i32 [[T7]] 71 // CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T8]]) 72 // CHECK: getelementptr inbounds {{.*}}, i32 [[T3]] 73 elt *test(short s) { 74 return new elt[s]; 75 } 76 } 77 78 // test0 with a 1-byte element. 79 namespace test4 { 80 struct A { 81 A(); 82 }; 83 84 typedef A elt; 85 86 // CHECK: define [[A:%.*]]* @_ZN5test44testEs(i16 signext 87 // CHECK: [[N:%.*]] = sext i16 {{%.*}} to i32 88 // CHECK-NEXT: [[T0:%.*]] = icmp slt i32 [[N]], 0 89 // CHECK-NEXT: [[T1:%.*]] = select i1 [[T0]], i32 -1, i32 [[N]] 90 // CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T1]]) 91 // CHECK: getelementptr inbounds {{.*}}, i32 [[N]] 92 elt *test(short s) { 93 return new elt[s]; 94 } 95 } 96 97 // test4 with no sext required. 98 namespace test5 { 99 struct A { 100 A(); 101 }; 102 103 typedef A elt; 104 105 // CHECK: define [[A:%.*]]* @_ZN5test54testEi(i32 106 // CHECK: [[N:%.*]] = load i32* 107 // CHECK-NEXT: [[T0:%.*]] = icmp slt i32 [[N]], 0 108 // CHECK-NEXT: [[T1:%.*]] = select i1 [[T0]], i32 -1, i32 [[N]] 109 // CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T1]]) 110 // CHECK: getelementptr inbounds {{.*}}, i32 [[N]] 111 elt *test(int s) { 112 return new elt[s]; 113 } 114 } 115 116 // test0 with an unsigned size. 117 namespace test6 { 118 struct A { 119 A(); 120 int x; 121 }; 122 123 typedef A elt; 124 125 // CHECK: define [[A:%.*]]* @_ZN5test64testEt(i16 zeroext 126 // CHECK: [[N:%.*]] = zext i16 {{%.*}} to i32 127 // CHECK-NEXT: [[T0:%.*]] = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 [[N]], i32 4) 128 // CHECK-NEXT: [[T1:%.*]] = extractvalue { i32, i1 } [[T0]], 1 129 // CHECK-NEXT: [[T2:%.*]] = extractvalue { i32, i1 } [[T0]], 0 130 // CHECK-NEXT: [[T3:%.*]] = select i1 [[T1]], i32 -1, i32 [[T2]] 131 // CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T3]]) 132 // CHECK: getelementptr inbounds {{.*}}, i32 [[N]] 133 elt *test(unsigned short s) { 134 return new elt[s]; 135 } 136 } 137 138 // test1 with an unsigned size. 139 namespace test7 { 140 struct A { 141 A(); 142 int x; 143 }; 144 145 typedef A elt[100]; 146 147 // CHECK: define [100 x [[A:%.*]]]* @_ZN5test74testEt(i16 zeroext 148 // CHECK: [[N:%.*]] = zext i16 {{%.*}} to i32 149 // CHECK-NEXT: [[T0:%.*]] = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 [[N]], i32 400) 150 // CHECK-NEXT: [[T1:%.*]] = extractvalue { i32, i1 } [[T0]], 1 151 // CHECK-NEXT: [[T2:%.*]] = extractvalue { i32, i1 } [[T0]], 0 152 // CHECK-NEXT: [[T3:%.*]] = mul i32 [[N]], 100 153 // CHECK-NEXT: [[T4:%.*]] = select i1 [[T1]], i32 -1, i32 [[T2]] 154 // CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T4]]) 155 // CHECK: getelementptr inbounds {{.*}}, i32 [[T3]] 156 elt *test(unsigned short s) { 157 return new elt[s]; 158 } 159 } 160 161 // test0 with a signed type larger than size_t. 162 namespace test8 { 163 struct A { 164 A(); 165 int x; 166 }; 167 168 typedef A elt; 169 170 // CHECK: define [[A:%.*]]* @_ZN5test84testEx(i64 171 // CHECK: [[N:%.*]] = load i64* 172 // CHECK-NEXT: [[T0:%.*]] = icmp uge i64 [[N]], 4294967296 173 // CHECK-NEXT: [[T1:%.*]] = trunc i64 [[N]] to i32 174 // CHECK-NEXT: [[T2:%.*]] = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 [[T1]], i32 4) 175 // CHECK-NEXT: [[T3:%.*]] = extractvalue { i32, i1 } [[T2]], 1 176 // CHECK-NEXT: [[T4:%.*]] = or i1 [[T0]], [[T3]] 177 // CHECK-NEXT: [[T5:%.*]] = extractvalue { i32, i1 } [[T2]], 0 178 // CHECK-NEXT: [[T6:%.*]] = select i1 [[T4]], i32 -1, i32 [[T5]] 179 // CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T6]]) 180 // CHECK: getelementptr inbounds {{.*}}, i32 [[T1]] 181 elt *test(long long s) { 182 return new elt[s]; 183 } 184 } 185 186 // test8 with an unsigned type. 187 namespace test9 { 188 struct A { 189 A(); 190 int x; 191 }; 192 193 typedef A elt; 194 195 // CHECK: define [[A:%.*]]* @_ZN5test94testEy(i64 196 // CHECK: [[N:%.*]] = load i64* 197 // CHECK-NEXT: [[T0:%.*]] = icmp uge i64 [[N]], 4294967296 198 // CHECK-NEXT: [[T1:%.*]] = trunc i64 [[N]] to i32 199 // CHECK-NEXT: [[T2:%.*]] = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 [[T1]], i32 4) 200 // CHECK-NEXT: [[T3:%.*]] = extractvalue { i32, i1 } [[T2]], 1 201 // CHECK-NEXT: [[T4:%.*]] = or i1 [[T0]], [[T3]] 202 // CHECK-NEXT: [[T5:%.*]] = extractvalue { i32, i1 } [[T2]], 0 203 // CHECK-NEXT: [[T6:%.*]] = select i1 [[T4]], i32 -1, i32 [[T5]] 204 // CHECK-NEXT: call noalias i8* @_Znaj(i32 [[T6]]) 205 // CHECK: getelementptr inbounds {{.*}}, i32 [[T1]] 206 elt *test(unsigned long long s) { 207 return new elt[s]; 208 } 209 } 210
