Nicolas Geoffray | 804d093 | 2014-05-02 08:46:00 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "builder.h" |
| 18 | #include "dex_file.h" |
| 19 | #include "dex_instruction.h" |
| 20 | #include "nodes.h" |
| 21 | #include "optimizing_unit_test.h" |
| 22 | #include "ssa_liveness_analysis.h" |
| 23 | #include "utils/arena_allocator.h" |
| 24 | |
| 25 | #include "gtest/gtest.h" |
| 26 | |
| 27 | namespace art { |
| 28 | |
| 29 | static void TestCode(const uint16_t* data, const char* expected) { |
| 30 | ArenaPool pool; |
| 31 | ArenaAllocator allocator(&pool); |
| 32 | HGraphBuilder builder(&allocator); |
| 33 | const DexFile::CodeItem* item = reinterpret_cast<const DexFile::CodeItem*>(data); |
| 34 | HGraph* graph = builder.BuildGraph(*item); |
| 35 | ASSERT_NE(graph, nullptr); |
| 36 | graph->BuildDominatorTree(); |
| 37 | graph->TransformToSSA(); |
Nicolas Geoffray | 0d3f578 | 2014-05-14 09:43:38 +0100 | [diff] [blame^] | 38 | graph->FindNaturalLoops(); |
Nicolas Geoffray | 804d093 | 2014-05-02 08:46:00 +0100 | [diff] [blame] | 39 | SsaLivenessAnalysis liveness(*graph); |
| 40 | liveness.Analyze(); |
| 41 | |
| 42 | std::ostringstream buffer; |
| 43 | for (HInsertionOrderIterator it(*graph); !it.Done(); it.Advance()) { |
| 44 | HBasicBlock* block = it.Current(); |
| 45 | buffer << "Block " << block->GetBlockId() << std::endl; |
| 46 | BitVector* live_in = liveness.GetLiveInSet(*block); |
| 47 | live_in->Dump(buffer, " live in: "); |
| 48 | BitVector* live_out = liveness.GetLiveOutSet(*block); |
| 49 | live_out->Dump(buffer, " live out: "); |
| 50 | BitVector* kill = liveness.GetKillSet(*block); |
| 51 | kill->Dump(buffer, " kill: "); |
| 52 | } |
| 53 | ASSERT_STREQ(expected, buffer.str().c_str()); |
| 54 | } |
| 55 | |
| 56 | TEST(LivenessTest, CFG1) { |
| 57 | const char* expected = |
| 58 | "Block 0\n" |
| 59 | " live in: ()\n" |
| 60 | " live out: ()\n" |
| 61 | " kill: ()\n" |
| 62 | "Block 1\n" |
| 63 | " live in: ()\n" |
| 64 | " live out: ()\n" |
| 65 | " kill: ()\n" |
| 66 | "Block 2\n" |
| 67 | " live in: ()\n" |
| 68 | " live out: ()\n" |
| 69 | " kill: ()\n"; |
| 70 | |
| 71 | // Constant is not used. |
| 72 | const uint16_t data[] = ONE_REGISTER_CODE_ITEM( |
| 73 | Instruction::CONST_4 | 0 | 0, |
| 74 | Instruction::RETURN_VOID); |
| 75 | |
| 76 | TestCode(data, expected); |
| 77 | } |
| 78 | |
| 79 | TEST(LivenessTest, CFG2) { |
| 80 | const char* expected = |
| 81 | "Block 0\n" |
| 82 | " live in: (0)\n" |
| 83 | " live out: (1)\n" |
| 84 | " kill: (1)\n" |
| 85 | "Block 1\n" |
| 86 | " live in: (1)\n" |
| 87 | " live out: (0)\n" |
| 88 | " kill: (0)\n" |
| 89 | "Block 2\n" |
| 90 | " live in: (0)\n" |
| 91 | " live out: (0)\n" |
| 92 | " kill: (0)\n"; |
| 93 | |
| 94 | const uint16_t data[] = ONE_REGISTER_CODE_ITEM( |
| 95 | Instruction::CONST_4 | 0 | 0, |
| 96 | Instruction::RETURN); |
| 97 | |
| 98 | TestCode(data, expected); |
| 99 | } |
| 100 | |
| 101 | TEST(LivenessTest, CFG3) { |
| 102 | const char* expected = |
| 103 | "Block 0\n" // entry block |
| 104 | " live in: (000)\n" |
| 105 | " live out: (110)\n" |
| 106 | " kill: (110)\n" |
| 107 | "Block 1\n" // block with add |
| 108 | " live in: (110)\n" |
| 109 | " live out: (001)\n" |
| 110 | " kill: (001)\n" |
| 111 | "Block 2\n" // block with return |
| 112 | " live in: (001)\n" |
| 113 | " live out: (000)\n" |
| 114 | " kill: (000)\n" |
| 115 | "Block 3\n" // exit block |
| 116 | " live in: (000)\n" |
| 117 | " live out: (000)\n" |
| 118 | " kill: (000)\n"; |
| 119 | |
| 120 | const uint16_t data[] = TWO_REGISTERS_CODE_ITEM( |
| 121 | Instruction::CONST_4 | 3 << 12 | 0, |
| 122 | Instruction::CONST_4 | 4 << 12 | 1 << 8, |
| 123 | Instruction::ADD_INT_2ADDR | 1 << 12, |
| 124 | Instruction::GOTO | 0x100, |
| 125 | Instruction::RETURN); |
| 126 | |
| 127 | TestCode(data, expected); |
| 128 | } |
| 129 | |
| 130 | TEST(LivenessTest, CFG4) { |
| 131 | // var a; |
| 132 | // if (0 == 0) { |
| 133 | // a = 5; |
| 134 | // } else { |
| 135 | // a = 4; |
| 136 | // } |
| 137 | // return a; |
| 138 | // |
| 139 | // Bitsets are made of: |
| 140 | // (constant0, constant4, constant5, phi, equal test) |
| 141 | const char* expected = |
| 142 | "Block 0\n" // entry block |
| 143 | " live in: (00000)\n" |
| 144 | " live out: (11100)\n" |
| 145 | " kill: (11100)\n" |
| 146 | "Block 1\n" // block with if |
| 147 | " live in: (11100)\n" |
| 148 | " live out: (01100)\n" |
| 149 | " kill: (00010)\n" |
| 150 | "Block 2\n" // else block |
| 151 | " live in: (01000)\n" |
| 152 | " live out: (00000)\n" |
| 153 | " kill: (00000)\n" |
| 154 | "Block 3\n" // then block |
| 155 | " live in: (00100)\n" |
| 156 | " live out: (00000)\n" |
| 157 | " kill: (00000)\n" |
| 158 | "Block 4\n" // return block |
| 159 | " live in: (00000)\n" |
| 160 | " live out: (00000)\n" |
| 161 | " kill: (00001)\n" |
| 162 | "Block 5\n" // exit block |
| 163 | " live in: (00000)\n" |
| 164 | " live out: (00000)\n" |
| 165 | " kill: (00000)\n"; |
| 166 | |
| 167 | const uint16_t data[] = ONE_REGISTER_CODE_ITEM( |
| 168 | Instruction::CONST_4 | 0 | 0, |
| 169 | Instruction::IF_EQ, 4, |
| 170 | Instruction::CONST_4 | 4 << 12 | 0, |
| 171 | Instruction::GOTO | 0x200, |
| 172 | Instruction::CONST_4 | 5 << 12 | 0, |
| 173 | Instruction::RETURN | 0 << 8); |
| 174 | |
| 175 | TestCode(data, expected); |
| 176 | } |
| 177 | |
| 178 | TEST(LivenessTest, CFG5) { |
| 179 | // var a = 0; |
| 180 | // if (0 == 0) { |
| 181 | // } else { |
| 182 | // a = 4; |
| 183 | // } |
| 184 | // return a; |
| 185 | const char* expected = |
| 186 | "Block 0\n" // entry block |
| 187 | " live in: (0000)\n" |
| 188 | " live out: (1100)\n" |
| 189 | " kill: (1100)\n" |
| 190 | "Block 1\n" // block with if |
| 191 | " live in: (1100)\n" |
Nicolas Geoffray | 622d9c3 | 2014-05-12 16:11:02 +0100 | [diff] [blame] | 192 | " live out: (1100)\n" |
Nicolas Geoffray | 804d093 | 2014-05-02 08:46:00 +0100 | [diff] [blame] | 193 | " kill: (0010)\n" |
| 194 | "Block 2\n" // else block |
| 195 | " live in: (0100)\n" |
| 196 | " live out: (0000)\n" |
| 197 | " kill: (0000)\n" |
| 198 | "Block 3\n" // return block |
| 199 | " live in: (0000)\n" |
| 200 | " live out: (0000)\n" |
| 201 | " kill: (0001)\n" |
| 202 | "Block 4\n" // exit block |
| 203 | " live in: (0000)\n" |
| 204 | " live out: (0000)\n" |
Nicolas Geoffray | 622d9c3 | 2014-05-12 16:11:02 +0100 | [diff] [blame] | 205 | " kill: (0000)\n" |
| 206 | "Block 5\n" // block to avoid critical edge. Predecessor is 1, successor is 3. |
| 207 | " live in: (1000)\n" |
| 208 | " live out: (0000)\n" |
Nicolas Geoffray | 804d093 | 2014-05-02 08:46:00 +0100 | [diff] [blame] | 209 | " kill: (0000)\n"; |
| 210 | |
| 211 | const uint16_t data[] = ONE_REGISTER_CODE_ITEM( |
| 212 | Instruction::CONST_4 | 0 | 0, |
| 213 | Instruction::IF_EQ, 3, |
| 214 | Instruction::CONST_4 | 4 << 12 | 0, |
| 215 | Instruction::RETURN | 0 << 8); |
| 216 | |
| 217 | TestCode(data, expected); |
| 218 | } |
| 219 | |
| 220 | TEST(LivenessTest, Loop1) { |
| 221 | // Simple loop with one preheader and one back edge. |
| 222 | // var a = 0; |
| 223 | // while (a == a) { |
| 224 | // a = 4; |
| 225 | // } |
| 226 | // return; |
| 227 | const char* expected = |
| 228 | "Block 0\n" // entry block |
| 229 | " live in: (0000)\n" |
| 230 | " live out: (1100)\n" |
| 231 | " kill: (1100)\n" |
| 232 | "Block 1\n" // pre header |
| 233 | " live in: (1100)\n" |
| 234 | " live out: (0100)\n" |
| 235 | " kill: (0000)\n" |
| 236 | "Block 2\n" // loop header |
| 237 | " live in: (0100)\n" |
| 238 | " live out: (0100)\n" |
| 239 | " kill: (0011)\n" |
| 240 | "Block 3\n" // back edge |
| 241 | " live in: (0100)\n" |
| 242 | " live out: (0100)\n" |
| 243 | " kill: (0000)\n" |
| 244 | "Block 4\n" // return block |
| 245 | " live in: (0000)\n" |
| 246 | " live out: (0000)\n" |
| 247 | " kill: (0000)\n" |
| 248 | "Block 5\n" // exit block |
| 249 | " live in: (0000)\n" |
| 250 | " live out: (0000)\n" |
| 251 | " kill: (0000)\n"; |
| 252 | |
| 253 | |
| 254 | const uint16_t data[] = ONE_REGISTER_CODE_ITEM( |
| 255 | Instruction::CONST_4 | 0 | 0, |
| 256 | Instruction::IF_EQ, 4, |
| 257 | Instruction::CONST_4 | 4 << 12 | 0, |
| 258 | Instruction::GOTO | 0xFD00, |
| 259 | Instruction::RETURN_VOID); |
| 260 | |
| 261 | TestCode(data, expected); |
| 262 | } |
| 263 | |
| 264 | TEST(LivenessTest, Loop3) { |
| 265 | // Test that the returned value stays live in a preceding loop. |
| 266 | // var a = 0; |
| 267 | // while (a == a) { |
| 268 | // a = 4; |
| 269 | // } |
| 270 | // return 5; |
| 271 | const char* expected = |
| 272 | "Block 0\n" |
| 273 | " live in: (00000)\n" |
| 274 | " live out: (11100)\n" |
| 275 | " kill: (11100)\n" |
| 276 | "Block 1\n" |
| 277 | " live in: (11100)\n" |
| 278 | " live out: (01100)\n" |
| 279 | " kill: (00000)\n" |
| 280 | "Block 2\n" // loop header |
| 281 | " live in: (01100)\n" |
| 282 | " live out: (01100)\n" |
| 283 | " kill: (00011)\n" |
| 284 | "Block 3\n" // back edge |
| 285 | " live in: (01100)\n" |
| 286 | " live out: (01100)\n" |
| 287 | " kill: (00000)\n" |
| 288 | "Block 4\n" // return block |
| 289 | " live in: (00100)\n" |
| 290 | " live out: (00000)\n" |
| 291 | " kill: (00000)\n" |
| 292 | "Block 5\n" // exit block |
| 293 | " live in: (00000)\n" |
| 294 | " live out: (00000)\n" |
| 295 | " kill: (00000)\n"; |
| 296 | |
| 297 | const uint16_t data[] = TWO_REGISTERS_CODE_ITEM( |
| 298 | Instruction::CONST_4 | 0 | 0, |
| 299 | Instruction::IF_EQ, 4, |
| 300 | Instruction::CONST_4 | 4 << 12 | 0, |
| 301 | Instruction::GOTO | 0xFD00, |
| 302 | Instruction::CONST_4 | 5 << 12 | 1 << 8, |
| 303 | Instruction::RETURN | 1 << 8); |
| 304 | |
| 305 | TestCode(data, expected); |
| 306 | } |
| 307 | |
| 308 | |
| 309 | TEST(LivenessTest, Loop4) { |
| 310 | // Make sure we support a preheader of a loop not being the first predecessor |
| 311 | // in the predecessor list of the header. |
| 312 | // var a = 0; |
| 313 | // while (a == a) { |
| 314 | // a = 4; |
| 315 | // } |
| 316 | // return a; |
| 317 | // Bitsets are made of: |
| 318 | // (constant0, constant4, phi, equal test) |
| 319 | const char* expected = |
| 320 | "Block 0\n" |
| 321 | " live in: (0000)\n" |
| 322 | " live out: (1100)\n" |
| 323 | " kill: (1100)\n" |
| 324 | "Block 1\n" |
| 325 | " live in: (1100)\n" |
| 326 | " live out: (1100)\n" |
| 327 | " kill: (0000)\n" |
| 328 | "Block 2\n" // loop header |
| 329 | " live in: (0100)\n" |
| 330 | " live out: (0110)\n" |
| 331 | " kill: (0011)\n" |
| 332 | "Block 3\n" // back edge |
| 333 | " live in: (0100)\n" |
| 334 | " live out: (0100)\n" |
| 335 | " kill: (0000)\n" |
| 336 | "Block 4\n" // pre loop header |
| 337 | " live in: (1100)\n" |
| 338 | " live out: (0100)\n" |
| 339 | " kill: (0000)\n" |
| 340 | "Block 5\n" // return block |
| 341 | " live in: (0010)\n" |
| 342 | " live out: (0000)\n" |
| 343 | " kill: (0000)\n" |
| 344 | "Block 6\n" // exit block |
| 345 | " live in: (0000)\n" |
| 346 | " live out: (0000)\n" |
| 347 | " kill: (0000)\n"; |
| 348 | |
| 349 | const uint16_t data[] = ONE_REGISTER_CODE_ITEM( |
| 350 | Instruction::CONST_4 | 0 | 0, |
| 351 | Instruction::GOTO | 0x500, |
| 352 | Instruction::IF_EQ, 5, |
| 353 | Instruction::CONST_4 | 4 << 12 | 0, |
| 354 | Instruction::GOTO | 0xFD00, |
| 355 | Instruction::GOTO | 0xFC00, |
| 356 | Instruction::RETURN | 0 << 8); |
| 357 | |
| 358 | TestCode(data, expected); |
| 359 | } |
| 360 | |
| 361 | TEST(LivenessTest, Loop5) { |
| 362 | // Make sure we create a preheader of a loop when a header originally has two |
| 363 | // incoming blocks and one back edge. |
| 364 | // Bitsets are made of: |
| 365 | // (constant0, constant4, constant5, equal in block 1, phi in block 8, phi in block 4, |
| 366 | // equal in block 4) |
| 367 | const char* expected = |
| 368 | "Block 0\n" |
| 369 | " live in: (0000000)\n" |
| 370 | " live out: (1110000)\n" |
| 371 | " kill: (1110000)\n" |
| 372 | "Block 1\n" |
| 373 | " live in: (1110000)\n" |
| 374 | " live out: (0110000)\n" |
| 375 | " kill: (0001000)\n" |
| 376 | "Block 2\n" |
| 377 | " live in: (0100000)\n" |
| 378 | " live out: (0000000)\n" |
| 379 | " kill: (0000000)\n" |
| 380 | "Block 3\n" |
| 381 | " live in: (0010000)\n" |
| 382 | " live out: (0000000)\n" |
| 383 | " kill: (0000000)\n" |
| 384 | "Block 4\n" // loop header |
| 385 | " live in: (0000000)\n" |
| 386 | " live out: (0000010)\n" |
| 387 | " kill: (0000011)\n" |
| 388 | "Block 5\n" // back edge |
| 389 | " live in: (0000010)\n" |
| 390 | " live out: (0000000)\n" |
| 391 | " kill: (0000000)\n" |
| 392 | "Block 6\n" // return block |
| 393 | " live in: (0000010)\n" |
| 394 | " live out: (0000000)\n" |
| 395 | " kill: (0000000)\n" |
| 396 | "Block 7\n" // exit block |
| 397 | " live in: (0000000)\n" |
| 398 | " live out: (0000000)\n" |
| 399 | " kill: (0000000)\n" |
| 400 | "Block 8\n" // synthesized pre header |
| 401 | " live in: (0000000)\n" |
| 402 | " live out: (0000000)\n" |
| 403 | " kill: (0000100)\n"; |
| 404 | |
| 405 | const uint16_t data[] = ONE_REGISTER_CODE_ITEM( |
| 406 | Instruction::CONST_4 | 0 | 0, |
| 407 | Instruction::IF_EQ, 4, |
| 408 | Instruction::CONST_4 | 4 << 12 | 0, |
| 409 | Instruction::GOTO | 0x200, |
| 410 | Instruction::CONST_4 | 5 << 12 | 0, |
| 411 | Instruction::IF_EQ, 3, |
| 412 | Instruction::GOTO | 0xFE00, |
| 413 | Instruction::RETURN | 0 << 8); |
| 414 | |
| 415 | TestCode(data, expected); |
| 416 | } |
| 417 | |
| 418 | TEST(LivenessTest, Loop6) { |
| 419 | // Bitsets are made of: |
Nicolas Geoffray | 622d9c3 | 2014-05-12 16:11:02 +0100 | [diff] [blame] | 420 | // (constant0, constant4, constant5, phi in block 2, equal in block 2, equal in block 3, |
| 421 | // phi in block 8) |
Nicolas Geoffray | 804d093 | 2014-05-02 08:46:00 +0100 | [diff] [blame] | 422 | const char* expected = |
| 423 | "Block 0\n" |
Nicolas Geoffray | 622d9c3 | 2014-05-12 16:11:02 +0100 | [diff] [blame] | 424 | " live in: (0000000)\n" |
| 425 | " live out: (1110000)\n" |
| 426 | " kill: (1110000)\n" |
Nicolas Geoffray | 804d093 | 2014-05-02 08:46:00 +0100 | [diff] [blame] | 427 | "Block 1\n" |
Nicolas Geoffray | 622d9c3 | 2014-05-12 16:11:02 +0100 | [diff] [blame] | 428 | " live in: (1110000)\n" |
| 429 | " live out: (0110000)\n" |
| 430 | " kill: (0000000)\n" |
Nicolas Geoffray | 804d093 | 2014-05-02 08:46:00 +0100 | [diff] [blame] | 431 | "Block 2\n" // loop header |
Nicolas Geoffray | 622d9c3 | 2014-05-12 16:11:02 +0100 | [diff] [blame] | 432 | " live in: (0110000)\n" |
| 433 | " live out: (0111000)\n" |
| 434 | " kill: (0001100)\n" |
Nicolas Geoffray | 804d093 | 2014-05-02 08:46:00 +0100 | [diff] [blame] | 435 | "Block 3\n" |
Nicolas Geoffray | 622d9c3 | 2014-05-12 16:11:02 +0100 | [diff] [blame] | 436 | " live in: (0110000)\n" |
| 437 | " live out: (0110000)\n" |
| 438 | " kill: (0000010)\n" |
| 439 | "Block 4\n" // original back edge |
| 440 | " live in: (0110000)\n" |
| 441 | " live out: (0110000)\n" |
| 442 | " kill: (0000000)\n" |
| 443 | "Block 5\n" // original back edge |
| 444 | " live in: (0110000)\n" |
| 445 | " live out: (0110000)\n" |
| 446 | " kill: (0000000)\n" |
Nicolas Geoffray | 804d093 | 2014-05-02 08:46:00 +0100 | [diff] [blame] | 447 | "Block 6\n" // return block |
Nicolas Geoffray | 622d9c3 | 2014-05-12 16:11:02 +0100 | [diff] [blame] | 448 | " live in: (0001000)\n" |
| 449 | " live out: (0000000)\n" |
| 450 | " kill: (0000000)\n" |
Nicolas Geoffray | 804d093 | 2014-05-02 08:46:00 +0100 | [diff] [blame] | 451 | "Block 7\n" // exit block |
Nicolas Geoffray | 622d9c3 | 2014-05-12 16:11:02 +0100 | [diff] [blame] | 452 | " live in: (0000000)\n" |
| 453 | " live out: (0000000)\n" |
| 454 | " kill: (0000000)\n" |
| 455 | "Block 8\n" // synthesized back edge |
| 456 | " live in: (0110000)\n" |
| 457 | " live out: (0110000)\n" |
| 458 | " kill: (0000001)\n"; |
Nicolas Geoffray | 804d093 | 2014-05-02 08:46:00 +0100 | [diff] [blame] | 459 | |
| 460 | const uint16_t data[] = ONE_REGISTER_CODE_ITEM( |
| 461 | Instruction::CONST_4 | 0 | 0, |
| 462 | Instruction::IF_EQ, 8, |
| 463 | Instruction::CONST_4 | 4 << 12 | 0, |
| 464 | Instruction::IF_EQ, 4, |
| 465 | Instruction::CONST_4 | 5 << 12 | 0, |
| 466 | Instruction::GOTO | 0xFA00, |
| 467 | Instruction::GOTO | 0xF900, |
| 468 | Instruction::RETURN | 0 << 8); |
| 469 | |
| 470 | TestCode(data, expected); |
| 471 | } |
| 472 | |
| 473 | |
| 474 | TEST(LivenessTest, Loop7) { |
| 475 | // Bitsets are made of: |
| 476 | // (constant0, constant4, constant5, phi in block 2, equal in block 2, equal in block 3, |
| 477 | // phi in block 6) |
| 478 | const char* expected = |
| 479 | "Block 0\n" |
| 480 | " live in: (0000000)\n" |
| 481 | " live out: (1110000)\n" |
| 482 | " kill: (1110000)\n" |
| 483 | "Block 1\n" |
| 484 | " live in: (1110000)\n" |
| 485 | " live out: (0110000)\n" |
| 486 | " kill: (0000000)\n" |
| 487 | "Block 2\n" // loop header |
| 488 | " live in: (0110000)\n" |
Nicolas Geoffray | 622d9c3 | 2014-05-12 16:11:02 +0100 | [diff] [blame] | 489 | " live out: (0111000)\n" |
Nicolas Geoffray | 804d093 | 2014-05-02 08:46:00 +0100 | [diff] [blame] | 490 | " kill: (0001100)\n" |
| 491 | "Block 3\n" |
| 492 | " live in: (0110000)\n" |
| 493 | " live out: (0110000)\n" |
| 494 | " kill: (0000010)\n" |
| 495 | "Block 4\n" // loop exit |
| 496 | " live in: (0010000)\n" |
| 497 | " live out: (0000000)\n" |
| 498 | " kill: (0000000)\n" |
| 499 | "Block 5\n" // back edge |
| 500 | " live in: (0110000)\n" |
| 501 | " live out: (0110000)\n" |
| 502 | " kill: (0000000)\n" |
| 503 | "Block 6\n" // return block |
| 504 | " live in: (0000000)\n" |
| 505 | " live out: (0000000)\n" |
| 506 | " kill: (0000001)\n" |
| 507 | "Block 7\n" // exit block |
| 508 | " live in: (0000000)\n" |
| 509 | " live out: (0000000)\n" |
Nicolas Geoffray | 622d9c3 | 2014-05-12 16:11:02 +0100 | [diff] [blame] | 510 | " kill: (0000000)\n" |
| 511 | "Block 8\n" // synthesized block to avoid critical edge. |
| 512 | " live in: (0001000)\n" |
| 513 | " live out: (0000000)\n" |
Nicolas Geoffray | 804d093 | 2014-05-02 08:46:00 +0100 | [diff] [blame] | 514 | " kill: (0000000)\n"; |
| 515 | |
| 516 | const uint16_t data[] = ONE_REGISTER_CODE_ITEM( |
| 517 | Instruction::CONST_4 | 0 | 0, |
| 518 | Instruction::IF_EQ, 8, |
| 519 | Instruction::CONST_4 | 4 << 12 | 0, |
| 520 | Instruction::IF_EQ, 4, |
| 521 | Instruction::CONST_4 | 5 << 12 | 0, |
| 522 | Instruction::GOTO | 0x0200, |
| 523 | Instruction::GOTO | 0xF900, |
| 524 | Instruction::RETURN | 0 << 8); |
| 525 | |
| 526 | TestCode(data, expected); |
| 527 | } |
| 528 | |
| 529 | } // namespace art |