Daniel Dunbar | e1467a4 | 2010-04-22 02:35:46 +0000 | [diff] [blame] | 1 | // RUN: %clang_cc1 -emit-llvm -triple x86_64 -O3 -o %t.opt.ll %s \ |
| 2 | // RUN: -fdump-record-layouts 2> %t.dump.txt |
| 3 | // RUN: FileCheck -check-prefix=CHECK-RECORD < %t.dump.txt %s |
| 4 | // RUN: FileCheck -check-prefix=CHECK-OPT < %t.opt.ll %s |
Daniel Dunbar | 2677261 | 2010-04-15 03:47:33 +0000 | [diff] [blame] | 5 | |
| 6 | /****/ |
| 7 | |
Daniel Dunbar | e1467a4 | 2010-04-22 02:35:46 +0000 | [diff] [blame] | 8 | // Check that we don't read off the end a packed 24-bit structure. |
Daniel Dunbar | 2677261 | 2010-04-15 03:47:33 +0000 | [diff] [blame] | 9 | // PR6176 |
| 10 | |
Daniel Dunbar | e1467a4 | 2010-04-22 02:35:46 +0000 | [diff] [blame] | 11 | // CHECK-RECORD: *** Dumping IRgen Record Layout |
| 12 | // CHECK-RECORD: Record: struct s0 |
| 13 | // CHECK-RECORD: Layout: <CGRecordLayout |
| 14 | // CHECK-RECORD: LLVMType:<{ [3 x i8] }> |
| 15 | // CHECK-RECORD: ContainsPointerToDataMember:0 |
| 16 | // CHECK-RECORD: BitFields:[ |
| 17 | // CHECK-RECORD: <CGBitFieldInfo Size:24 IsSigned:1 |
| 18 | // CHECK-RECORD: NumComponents:2 Components: [ |
| 19 | // CHECK-RECORD: <AccessInfo FieldIndex:0 FieldByteOffset:0 FieldBitStart:0 AccessWidth:16 |
Daniel Dunbar | 89da874 | 2010-04-22 03:17:04 +0000 | [diff] [blame] | 20 | // CHECK-RECORD: AccessAlignment:1 TargetBitOffset:0 TargetBitWidth:16> |
Daniel Dunbar | e1467a4 | 2010-04-22 02:35:46 +0000 | [diff] [blame] | 21 | // CHECK-RECORD: <AccessInfo FieldIndex:0 FieldByteOffset:2 FieldBitStart:0 AccessWidth:8 |
Daniel Dunbar | 89da874 | 2010-04-22 03:17:04 +0000 | [diff] [blame] | 22 | // CHECK-RECORD: AccessAlignment:1 TargetBitOffset:16 TargetBitWidth:8> |
Daniel Dunbar | 2677261 | 2010-04-15 03:47:33 +0000 | [diff] [blame] | 23 | struct __attribute((packed)) s0 { |
| 24 | int f0 : 24; |
| 25 | }; |
| 26 | |
| 27 | struct s0 g0 = { 0xdeadbeef }; |
| 28 | |
| 29 | int f0_load(struct s0 *a0) { |
| 30 | int size_check[sizeof(struct s0) == 3 ? 1 : -1]; |
| 31 | return a0->f0; |
| 32 | } |
| 33 | int f0_store(struct s0 *a0) { |
| 34 | return (a0->f0 = 1); |
| 35 | } |
| 36 | int f0_reload(struct s0 *a0) { |
| 37 | return (a0->f0 += 1); |
| 38 | } |
| 39 | |
| 40 | // CHECK-OPT: define i64 @test_0() |
| 41 | // CHECK-OPT: ret i64 1 |
| 42 | // CHECK-OPT: } |
| 43 | unsigned long long test_0() { |
| 44 | struct s0 g0 = { 0xdeadbeef }; |
| 45 | unsigned long long res = 0; |
| 46 | res ^= g0.f0; |
| 47 | res ^= f0_load(&g0) ^ f0_store(&g0) ^ f0_reload(&g0); |
| 48 | res ^= g0.f0; |
| 49 | return res; |
| 50 | } |
| 51 | |
| 52 | /****/ |
| 53 | |
| 54 | // PR5591 |
| 55 | |
Daniel Dunbar | e1467a4 | 2010-04-22 02:35:46 +0000 | [diff] [blame] | 56 | // CHECK-RECORD: *** Dumping IRgen Record Layout |
| 57 | // CHECK-RECORD: Record: struct s1 |
| 58 | // CHECK-RECORD: Layout: <CGRecordLayout |
| 59 | // CHECK-RECORD: LLVMType:<{ [2 x i8], i8 }> |
| 60 | // CHECK-RECORD: ContainsPointerToDataMember:0 |
| 61 | // CHECK-RECORD: BitFields:[ |
| 62 | // CHECK-RECORD: <CGBitFieldInfo Size:10 IsSigned:1 |
| 63 | // CHECK-RECORD: NumComponents:1 Components: [ |
| 64 | // CHECK-RECORD: <AccessInfo FieldIndex:0 FieldByteOffset:0 FieldBitStart:0 AccessWidth:16 |
Daniel Dunbar | 89da874 | 2010-04-22 03:17:04 +0000 | [diff] [blame] | 65 | // CHECK-RECORD: AccessAlignment:1 TargetBitOffset:0 TargetBitWidth:10> |
Daniel Dunbar | e1467a4 | 2010-04-22 02:35:46 +0000 | [diff] [blame] | 66 | // CHECK-RECORD: ]> |
| 67 | // CHECK-RECORD: <CGBitFieldInfo Size:10 IsSigned:1 |
| 68 | // CHECK-RECORD: NumComponents:2 Components: [ |
| 69 | // CHECK-RECORD: <AccessInfo FieldIndex:0 FieldByteOffset:0 FieldBitStart:10 AccessWidth:16 |
Daniel Dunbar | 89da874 | 2010-04-22 03:17:04 +0000 | [diff] [blame] | 70 | // CHECK-RECORD: AccessAlignment:1 TargetBitOffset:0 TargetBitWidth:6> |
Daniel Dunbar | e1467a4 | 2010-04-22 02:35:46 +0000 | [diff] [blame] | 71 | // CHECK-RECORD: <AccessInfo FieldIndex:0 FieldByteOffset:2 FieldBitStart:0 AccessWidth:8 |
Daniel Dunbar | 89da874 | 2010-04-22 03:17:04 +0000 | [diff] [blame] | 72 | // CHECK-RECORD: AccessAlignment:1 TargetBitOffset:6 TargetBitWidth:4> |
Daniel Dunbar | e1467a4 | 2010-04-22 02:35:46 +0000 | [diff] [blame] | 73 | |
Daniel Dunbar | 2677261 | 2010-04-15 03:47:33 +0000 | [diff] [blame] | 74 | #pragma pack(push) |
| 75 | #pragma pack(1) |
| 76 | struct __attribute((packed)) s1 { |
| 77 | signed f0 : 10; |
| 78 | signed f1 : 10; |
| 79 | }; |
| 80 | #pragma pack(pop) |
| 81 | |
| 82 | struct s1 g1 = { 0xdeadbeef, 0xdeadbeef }; |
| 83 | |
| 84 | int f1_load(struct s1 *a0) { |
| 85 | int size_check[sizeof(struct s1) == 3 ? 1 : -1]; |
| 86 | return a0->f1; |
| 87 | } |
| 88 | int f1_store(struct s1 *a0) { |
| 89 | return (a0->f1 = 1234); |
| 90 | } |
| 91 | int f1_reload(struct s1 *a0) { |
| 92 | return (a0->f1 += 1234); |
| 93 | } |
| 94 | |
| 95 | // CHECK-OPT: define i64 @test_1() |
| 96 | // CHECK-OPT: ret i64 210 |
| 97 | // CHECK-OPT: } |
| 98 | unsigned long long test_1() { |
| 99 | struct s1 g1 = { 0xdeadbeef, 0xdeadbeef }; |
| 100 | unsigned long long res = 0; |
| 101 | res ^= g1.f0 ^ g1.f1; |
| 102 | res ^= f1_load(&g1) ^ f1_store(&g1) ^ f1_reload(&g1); |
| 103 | res ^= g1.f0 ^ g1.f1; |
| 104 | return res; |
| 105 | } |
| 106 | |
| 107 | /****/ |
| 108 | |
Daniel Dunbar | e1467a4 | 2010-04-22 02:35:46 +0000 | [diff] [blame] | 109 | // Check that we don't access beyond the bounds of a union. |
| 110 | // |
Daniel Dunbar | 2677261 | 2010-04-15 03:47:33 +0000 | [diff] [blame] | 111 | // PR5567 |
| 112 | |
Daniel Dunbar | e1467a4 | 2010-04-22 02:35:46 +0000 | [diff] [blame] | 113 | // CHECK-RECORD: *** Dumping IRgen Record Layout |
| 114 | // CHECK-RECORD: Record: union u2 |
| 115 | // CHECK-RECORD: Layout: <CGRecordLayout |
| 116 | // CHECK-RECORD: LLVMType:<{ i8 }> |
| 117 | // CHECK-RECORD: ContainsPointerToDataMember:0 |
| 118 | // CHECK-RECORD: BitFields:[ |
| 119 | // CHECK-RECORD: <CGBitFieldInfo Size:3 IsSigned:0 |
| 120 | // CHECK-RECORD: NumComponents:1 Components: [ |
| 121 | // CHECK-RECORD: <AccessInfo FieldIndex:0 FieldByteOffset:0 FieldBitStart:0 AccessWidth:8 |
Daniel Dunbar | 89da874 | 2010-04-22 03:17:04 +0000 | [diff] [blame] | 122 | // CHECK-RECORD: AccessAlignment:1 TargetBitOffset:0 TargetBitWidth:3> |
Daniel Dunbar | e1467a4 | 2010-04-22 02:35:46 +0000 | [diff] [blame] | 123 | |
| 124 | union __attribute__((packed)) u2 { |
Daniel Dunbar | 2677261 | 2010-04-15 03:47:33 +0000 | [diff] [blame] | 125 | unsigned long long f0 : 3; |
| 126 | }; |
| 127 | |
| 128 | union u2 g2 = { 0xdeadbeef }; |
| 129 | |
| 130 | int f2_load(union u2 *a0) { |
| 131 | return a0->f0; |
| 132 | } |
| 133 | int f2_store(union u2 *a0) { |
| 134 | return (a0->f0 = 1234); |
| 135 | } |
| 136 | int f2_reload(union u2 *a0) { |
| 137 | return (a0->f0 += 1234); |
| 138 | } |
| 139 | |
| 140 | // CHECK-OPT: define i64 @test_2() |
| 141 | // CHECK-OPT: ret i64 2 |
| 142 | // CHECK-OPT: } |
| 143 | unsigned long long test_2() { |
| 144 | union u2 g2 = { 0xdeadbeef }; |
| 145 | unsigned long long res = 0; |
| 146 | res ^= g2.f0; |
| 147 | res ^= f2_load(&g2) ^ f2_store(&g2) ^ f2_reload(&g2); |
| 148 | res ^= g2.f0; |
| 149 | return res; |
| 150 | } |
| 151 | |
| 152 | /***/ |
| 153 | |
| 154 | // PR5039 |
| 155 | |
| 156 | struct s3 { |
| 157 | long long f0 : 32; |
| 158 | long long f1 : 32; |
| 159 | }; |
| 160 | |
| 161 | struct s3 g3 = { 0xdeadbeef, 0xdeadbeef }; |
| 162 | |
| 163 | int f3_load(struct s3 *a0) { |
| 164 | a0->f0 = 1; |
| 165 | return a0->f0; |
| 166 | } |
| 167 | int f3_store(struct s3 *a0) { |
| 168 | a0->f0 = 1; |
| 169 | return (a0->f0 = 1234); |
| 170 | } |
| 171 | int f3_reload(struct s3 *a0) { |
| 172 | a0->f0 = 1; |
| 173 | return (a0->f0 += 1234); |
| 174 | } |
| 175 | |
| 176 | // CHECK-OPT: define i64 @test_3() |
| 177 | // CHECK-OPT: ret i64 -559039940 |
| 178 | // CHECK-OPT: } |
| 179 | unsigned long long test_3() { |
| 180 | struct s3 g3 = { 0xdeadbeef, 0xdeadbeef }; |
| 181 | unsigned long long res = 0; |
| 182 | res ^= g3.f0 ^ g3.f1; |
| 183 | res ^= f3_load(&g3) ^ f3_store(&g3) ^ f3_reload(&g3); |
| 184 | res ^= g3.f0 ^ g3.f1; |
| 185 | return res; |
| 186 | } |
| 187 | |
| 188 | /***/ |
| 189 | |
| 190 | // This is a case where the bitfield access will straddle an alignment boundary |
| 191 | // of its underlying type. |
| 192 | |
| 193 | struct s4 { |
| 194 | unsigned f0 : 16; |
| 195 | unsigned f1 : 28 __attribute__ ((packed)); |
| 196 | }; |
| 197 | |
| 198 | struct s4 g4 = { 0xdeadbeef, 0xdeadbeef }; |
| 199 | |
| 200 | int f4_load(struct s4 *a0) { |
| 201 | return a0->f0 ^ a0->f1; |
| 202 | } |
| 203 | int f4_store(struct s4 *a0) { |
| 204 | return (a0->f0 = 1234) ^ (a0->f1 = 5678); |
| 205 | } |
| 206 | int f4_reload(struct s4 *a0) { |
| 207 | return (a0->f0 += 1234) ^ (a0->f1 += 5678); |
| 208 | } |
| 209 | |
| 210 | // CHECK-OPT: define i64 @test_4() |
| 211 | // CHECK-OPT: ret i64 4860 |
| 212 | // CHECK-OPT: } |
| 213 | unsigned long long test_4() { |
| 214 | struct s4 g4 = { 0xdeadbeef, 0xdeadbeef }; |
| 215 | unsigned long long res = 0; |
| 216 | res ^= g4.f0 ^ g4.f1; |
| 217 | res ^= f4_load(&g4) ^ f4_store(&g4) ^ f4_reload(&g4); |
| 218 | res ^= g4.f0 ^ g4.f1; |
| 219 | return res; |
| 220 | } |
| 221 | |
| 222 | /***/ |
| 223 | |
Daniel Dunbar | 2677261 | 2010-04-15 03:47:33 +0000 | [diff] [blame] | 224 | struct s5 { |
| 225 | unsigned f0 : 2; |
| 226 | _Bool f1 : 1; |
| 227 | _Bool f2 : 1; |
| 228 | }; |
| 229 | |
| 230 | struct s5 g5 = { 0xdeadbeef, 0xdeadbeef }; |
| 231 | |
| 232 | int f5_load(struct s5 *a0) { |
| 233 | return a0->f0 ^ a0->f1; |
| 234 | } |
| 235 | int f5_store(struct s5 *a0) { |
| 236 | return (a0->f0 = 0xF) ^ (a0->f1 = 0xF) ^ (a0->f2 = 0xF); |
| 237 | } |
| 238 | int f5_reload(struct s5 *a0) { |
| 239 | return (a0->f0 += 0xF) ^ (a0->f1 += 0xF) ^ (a0->f2 += 0xF); |
| 240 | } |
| 241 | |
| 242 | // CHECK-OPT: define i64 @test_5() |
| 243 | // CHECK-OPT: ret i64 2 |
| 244 | // CHECK-OPT: } |
| 245 | unsigned long long test_5() { |
| 246 | struct s5 g5 = { 0xdeadbeef, 0xdeadbeef, 0xdeadbeef }; |
| 247 | unsigned long long res = 0; |
| 248 | res ^= g5.f0 ^ g5.f1 ^ g5.f2; |
| 249 | res ^= f5_load(&g5) ^ f5_store(&g5) ^ f5_reload(&g5); |
| 250 | res ^= g5.f0 ^ g5.f1 ^ g5.f2; |
| 251 | return res; |
| 252 | } |
Anders Carlsson | 4803535 | 2010-04-17 21:52:22 +0000 | [diff] [blame] | 253 | |
Daniel Dunbar | 8ab78a7 | 2010-04-20 17:52:30 +0000 | [diff] [blame] | 254 | /***/ |
| 255 | |
| 256 | struct s6 { |
| 257 | _Bool f0 : 2; |
Anders Carlsson | 4803535 | 2010-04-17 21:52:22 +0000 | [diff] [blame] | 258 | }; |
| 259 | |
Daniel Dunbar | 8ab78a7 | 2010-04-20 17:52:30 +0000 | [diff] [blame] | 260 | struct s6 g6 = { 0xF }; |
| 261 | |
| 262 | int f6_load(struct s6 *a0) { |
| 263 | return a0->f0; |
| 264 | } |
| 265 | int f6_store(struct s6 *a0) { |
| 266 | return a0->f0 = 0x0; |
| 267 | } |
| 268 | int f6_reload(struct s6 *a0) { |
| 269 | return (a0->f0 += 0xF); |
Anders Carlsson | 4803535 | 2010-04-17 21:52:22 +0000 | [diff] [blame] | 270 | } |
| 271 | |
Daniel Dunbar | 8ab78a7 | 2010-04-20 17:52:30 +0000 | [diff] [blame] | 272 | // CHECK-OPT: define zeroext i1 @test_6() |
| 273 | // CHECK-OPT: ret i1 true |
| 274 | // CHECK-OPT: } |
| 275 | _Bool test_6() { |
| 276 | struct s6 g6 = { 0xF }; |
| 277 | unsigned long long res = 0; |
| 278 | res ^= g6.f0; |
| 279 | res ^= f6_load(&g6); |
| 280 | res ^= g6.f0; |
| 281 | return res; |
| 282 | } |
Daniel Dunbar | 89da874 | 2010-04-22 03:17:04 +0000 | [diff] [blame] | 283 | |
| 284 | /***/ |
| 285 | |
| 286 | // Check that we compute the best alignment possible for each access. |
| 287 | // |
| 288 | // CHECK-RECORD: *** Dumping IRgen Record Layout |
| 289 | // CHECK-RECORD: Record: struct s7 |
| 290 | // CHECK-RECORD: Layout: <CGRecordLayout |
| 291 | // CHECK-RECORD: LLVMType:{ i32, i32, i32, i8, [3 x i8], [4 x i8], [12 x i8] } |
| 292 | // CHECK-RECORD: ContainsPointerToDataMember:0 |
| 293 | // CHECK-RECORD: BitFields:[ |
| 294 | // CHECK-RECORD: <CGBitFieldInfo Size:5 IsSigned:1 |
| 295 | // CHECK-RECORD: NumComponents:1 Components: [ |
| 296 | // CHECK-RECORD: <AccessInfo FieldIndex:0 FieldByteOffset:12 FieldBitStart:0 AccessWidth:32 |
| 297 | // CHECK-RECORD: AccessAlignment:4 TargetBitOffset:0 TargetBitWidth:5> |
| 298 | // CHECK-RECORD: ]> |
| 299 | // CHECK-RECORD: <CGBitFieldInfo Size:29 IsSigned:1 |
| 300 | // CHECK-RECORD: NumComponents:1 Components: [ |
| 301 | // CHECK-RECORD: <AccessInfo FieldIndex:0 FieldByteOffset:16 FieldBitStart:0 AccessWidth:32 |
| 302 | // CHECK-RECORD: AccessAlignment:16 TargetBitOffset:0 TargetBitWidth:29> |
| 303 | |
| 304 | struct __attribute__((aligned(16))) s7 { |
| 305 | int a, b, c; |
| 306 | int f0 : 5; |
| 307 | int f1 : 29; |
| 308 | }; |
| 309 | |
| 310 | int f7_load(struct s7 *a0) { |
| 311 | return a0->f0; |
| 312 | } |
Daniel Dunbar | 4651efb | 2010-04-22 14:56:10 +0000 | [diff] [blame] | 313 | |
| 314 | /***/ |
| 315 | |
| 316 | // This is a case where we narrow the access width immediately. |
| 317 | |
| 318 | struct __attribute__((packed)) s8 { |
| 319 | char f0 : 4; |
| 320 | char f1; |
| 321 | int f2 : 4; |
| 322 | char f3 : 4; |
| 323 | }; |
| 324 | |
| 325 | struct s8 g8 = { 0xF }; |
| 326 | |
| 327 | int f8_load(struct s8 *a0) { |
| 328 | return a0->f0 ^ a0 ->f2 ^ a0->f3; |
| 329 | } |
| 330 | int f8_store(struct s8 *a0) { |
| 331 | return (a0->f0 = 0xFD) ^ (a0->f2 = 0xFD) ^ (a0->f3 = 0xFD); |
| 332 | } |
| 333 | int f8_reload(struct s8 *a0) { |
| 334 | return (a0->f0 += 0xFD) ^ (a0->f2 += 0xFD) ^ (a0->f3 += 0xFD); |
| 335 | } |
| 336 | |
| 337 | // CHECK-OPT: define i32 @test_8() |
| 338 | // CHECK-OPT: ret i32 -3 |
| 339 | // CHECK-OPT: } |
| 340 | unsigned test_8() { |
| 341 | struct s8 g8 = { 0xdeadbeef, 0xdeadbeef, 0xdeadbeef, 0xdeadbeef }; |
| 342 | unsigned long long res = 0; |
| 343 | res ^= g8.f0 ^ g8.f2 ^ g8.f3; |
| 344 | res ^= f8_load(&g8) ^ f8_store(&g8) ^ f8_reload(&g8); |
| 345 | res ^= g8.f0 ^ g8.f2 ^ g8.f3; |
| 346 | return res; |
| 347 | } |
Daniel Dunbar | 52968a1 | 2010-04-22 15:22:33 +0000 | [diff] [blame] | 348 | |
| 349 | /***/ |
| 350 | |
| 351 | // This is another case where we narrow the access width immediately. |
| 352 | // |
| 353 | // <rdar://problem/7893760> |
| 354 | |
| 355 | struct __attribute__((packed)) s9 { |
| 356 | unsigned f0 : 7; |
| 357 | unsigned f1 : 7; |
| 358 | unsigned f2 : 7; |
| 359 | unsigned f3 : 7; |
| 360 | unsigned f4 : 7; |
| 361 | unsigned f5 : 7; |
| 362 | unsigned f6 : 7; |
| 363 | unsigned f7 : 7; |
| 364 | }; |
| 365 | |
| 366 | int f9_load(struct s9 *a0) { |
| 367 | return a0->f7; |
| 368 | } |