1 //===---- llvm/unittest/IR/PatternMatch.cpp - PatternMatch unit tests ----===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "llvm/IR/PatternMatch.h" 10 #include "llvm/ADT/APSInt.h" 11 #include "llvm/ADT/STLExtras.h" 12 #include "llvm/Analysis/ValueTracking.h" 13 #include "llvm/IR/BasicBlock.h" 14 #include "llvm/IR/Constants.h" 15 #include "llvm/IR/DataLayout.h" 16 #include "llvm/IR/DerivedTypes.h" 17 #include "llvm/IR/Function.h" 18 #include "llvm/IR/IRBuilder.h" 19 #include "llvm/IR/Instructions.h" 20 #include "llvm/IR/LLVMContext.h" 21 #include "llvm/IR/MDBuilder.h" 22 #include "llvm/IR/Module.h" 23 #include "llvm/IR/NoFolder.h" 24 #include "llvm/IR/Operator.h" 25 #include "llvm/IR/Type.h" 26 #include "gtest/gtest.h" 27 28 using namespace llvm; 29 using namespace llvm::PatternMatch; 30 31 namespace { 32 33 struct PatternMatchTest : ::testing::Test { 34 LLVMContext Ctx; 35 std::unique_ptr<Module> M; 36 Function *F; 37 BasicBlock *BB; 38 IRBuilder<NoFolder> IRB; 39 40 PatternMatchTest() 41 : M(new Module("PatternMatchTestModule", Ctx)), 42 F(Function::Create( 43 FunctionType::get(Type::getVoidTy(Ctx), /* IsVarArg */ false), 44 Function::ExternalLinkage, "f", M.get())), 45 BB(BasicBlock::Create(Ctx, "entry", F)), IRB(BB) {} 46 }; 47 48 TEST_F(PatternMatchTest, OneUse) { 49 // Build up a little tree of values: 50 // 51 // One = (1 + 2) + 42 52 // Two = One + 42 53 // Leaf = (Two + 8) + (Two + 13) 54 Value *One = IRB.CreateAdd(IRB.CreateAdd(IRB.getInt32(1), IRB.getInt32(2)), 55 IRB.getInt32(42)); 56 Value *Two = IRB.CreateAdd(One, IRB.getInt32(42)); 57 Value *Leaf = IRB.CreateAdd(IRB.CreateAdd(Two, IRB.getInt32(8)), 58 IRB.CreateAdd(Two, IRB.getInt32(13))); 59 Value *V; 60 61 EXPECT_TRUE(m_OneUse(m_Value(V)).match(One)); 62 EXPECT_EQ(One, V); 63 64 EXPECT_FALSE(m_OneUse(m_Value()).match(Two)); 65 EXPECT_FALSE(m_OneUse(m_Value()).match(Leaf)); 66 } 67 68 TEST_F(PatternMatchTest, SpecificIntEQ) { 69 Type *IntTy = IRB.getInt32Ty(); 70 unsigned BitWidth = IntTy->getScalarSizeInBits(); 71 72 Value *Zero = ConstantInt::get(IntTy, 0); 73 Value *One = ConstantInt::get(IntTy, 1); 74 Value *NegOne = ConstantInt::get(IntTy, -1); 75 76 EXPECT_TRUE( 77 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_EQ, APInt(BitWidth, 0)) 78 .match(Zero)); 79 EXPECT_FALSE( 80 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_EQ, APInt(BitWidth, 0)) 81 .match(One)); 82 EXPECT_FALSE( 83 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_EQ, APInt(BitWidth, 0)) 84 .match(NegOne)); 85 86 EXPECT_FALSE( 87 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_EQ, APInt(BitWidth, 1)) 88 .match(Zero)); 89 EXPECT_TRUE( 90 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_EQ, APInt(BitWidth, 1)) 91 .match(One)); 92 EXPECT_FALSE( 93 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_EQ, APInt(BitWidth, 1)) 94 .match(NegOne)); 95 96 EXPECT_FALSE( 97 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_EQ, APInt(BitWidth, -1)) 98 .match(Zero)); 99 EXPECT_FALSE( 100 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_EQ, APInt(BitWidth, -1)) 101 .match(One)); 102 EXPECT_TRUE( 103 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_EQ, APInt(BitWidth, -1)) 104 .match(NegOne)); 105 } 106 107 TEST_F(PatternMatchTest, SpecificIntNE) { 108 Type *IntTy = IRB.getInt32Ty(); 109 unsigned BitWidth = IntTy->getScalarSizeInBits(); 110 111 Value *Zero = ConstantInt::get(IntTy, 0); 112 Value *One = ConstantInt::get(IntTy, 1); 113 Value *NegOne = ConstantInt::get(IntTy, -1); 114 115 EXPECT_FALSE( 116 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_NE, APInt(BitWidth, 0)) 117 .match(Zero)); 118 EXPECT_TRUE( 119 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_NE, APInt(BitWidth, 0)) 120 .match(One)); 121 EXPECT_TRUE( 122 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_NE, APInt(BitWidth, 0)) 123 .match(NegOne)); 124 125 EXPECT_TRUE( 126 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_NE, APInt(BitWidth, 1)) 127 .match(Zero)); 128 EXPECT_FALSE( 129 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_NE, APInt(BitWidth, 1)) 130 .match(One)); 131 EXPECT_TRUE( 132 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_NE, APInt(BitWidth, 1)) 133 .match(NegOne)); 134 135 EXPECT_TRUE( 136 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_NE, APInt(BitWidth, -1)) 137 .match(Zero)); 138 EXPECT_TRUE( 139 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_NE, APInt(BitWidth, -1)) 140 .match(One)); 141 EXPECT_FALSE( 142 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_NE, APInt(BitWidth, -1)) 143 .match(NegOne)); 144 } 145 146 TEST_F(PatternMatchTest, SpecificIntUGT) { 147 Type *IntTy = IRB.getInt32Ty(); 148 unsigned BitWidth = IntTy->getScalarSizeInBits(); 149 150 Value *Zero = ConstantInt::get(IntTy, 0); 151 Value *One = ConstantInt::get(IntTy, 1); 152 Value *NegOne = ConstantInt::get(IntTy, -1); 153 154 EXPECT_FALSE( 155 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGT, APInt(BitWidth, 0)) 156 .match(Zero)); 157 EXPECT_TRUE( 158 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGT, APInt(BitWidth, 0)) 159 .match(One)); 160 EXPECT_TRUE( 161 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGT, APInt(BitWidth, 0)) 162 .match(NegOne)); 163 164 EXPECT_FALSE( 165 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGT, APInt(BitWidth, 1)) 166 .match(Zero)); 167 EXPECT_FALSE( 168 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGT, APInt(BitWidth, 1)) 169 .match(One)); 170 EXPECT_TRUE( 171 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGT, APInt(BitWidth, 1)) 172 .match(NegOne)); 173 174 EXPECT_FALSE( 175 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGT, APInt(BitWidth, -1)) 176 .match(Zero)); 177 EXPECT_FALSE( 178 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGT, APInt(BitWidth, -1)) 179 .match(One)); 180 EXPECT_FALSE( 181 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGT, APInt(BitWidth, -1)) 182 .match(NegOne)); 183 } 184 185 TEST_F(PatternMatchTest, SignbitZeroChecks) { 186 Type *IntTy = IRB.getInt32Ty(); 187 188 Value *Zero = ConstantInt::get(IntTy, 0); 189 Value *One = ConstantInt::get(IntTy, 1); 190 Value *NegOne = ConstantInt::get(IntTy, -1); 191 192 EXPECT_TRUE(m_Negative().match(NegOne)); 193 EXPECT_FALSE(m_NonNegative().match(NegOne)); 194 EXPECT_FALSE(m_StrictlyPositive().match(NegOne)); 195 EXPECT_TRUE(m_NonPositive().match(NegOne)); 196 197 EXPECT_FALSE(m_Negative().match(Zero)); 198 EXPECT_TRUE(m_NonNegative().match(Zero)); 199 EXPECT_FALSE(m_StrictlyPositive().match(Zero)); 200 EXPECT_TRUE(m_NonPositive().match(Zero)); 201 202 EXPECT_FALSE(m_Negative().match(One)); 203 EXPECT_TRUE(m_NonNegative().match(One)); 204 EXPECT_TRUE(m_StrictlyPositive().match(One)); 205 EXPECT_FALSE(m_NonPositive().match(One)); 206 } 207 208 TEST_F(PatternMatchTest, SpecificIntUGE) { 209 Type *IntTy = IRB.getInt32Ty(); 210 unsigned BitWidth = IntTy->getScalarSizeInBits(); 211 212 Value *Zero = ConstantInt::get(IntTy, 0); 213 Value *One = ConstantInt::get(IntTy, 1); 214 Value *NegOne = ConstantInt::get(IntTy, -1); 215 216 EXPECT_TRUE( 217 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGE, APInt(BitWidth, 0)) 218 .match(Zero)); 219 EXPECT_TRUE( 220 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGE, APInt(BitWidth, 0)) 221 .match(One)); 222 EXPECT_TRUE( 223 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGE, APInt(BitWidth, 0)) 224 .match(NegOne)); 225 226 EXPECT_FALSE( 227 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGE, APInt(BitWidth, 1)) 228 .match(Zero)); 229 EXPECT_TRUE( 230 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGE, APInt(BitWidth, 1)) 231 .match(One)); 232 EXPECT_TRUE( 233 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGE, APInt(BitWidth, 1)) 234 .match(NegOne)); 235 236 EXPECT_FALSE( 237 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGE, APInt(BitWidth, -1)) 238 .match(Zero)); 239 EXPECT_FALSE( 240 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGE, APInt(BitWidth, -1)) 241 .match(One)); 242 EXPECT_TRUE( 243 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_UGE, APInt(BitWidth, -1)) 244 .match(NegOne)); 245 } 246 247 TEST_F(PatternMatchTest, SpecificIntULT) { 248 Type *IntTy = IRB.getInt32Ty(); 249 unsigned BitWidth = IntTy->getScalarSizeInBits(); 250 251 Value *Zero = ConstantInt::get(IntTy, 0); 252 Value *One = ConstantInt::get(IntTy, 1); 253 Value *NegOne = ConstantInt::get(IntTy, -1); 254 255 EXPECT_FALSE( 256 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULT, APInt(BitWidth, 0)) 257 .match(Zero)); 258 EXPECT_FALSE( 259 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULT, APInt(BitWidth, 0)) 260 .match(One)); 261 EXPECT_FALSE( 262 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULT, APInt(BitWidth, 0)) 263 .match(NegOne)); 264 265 EXPECT_TRUE( 266 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULT, APInt(BitWidth, 1)) 267 .match(Zero)); 268 EXPECT_FALSE( 269 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULT, APInt(BitWidth, 1)) 270 .match(One)); 271 EXPECT_FALSE( 272 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULT, APInt(BitWidth, 1)) 273 .match(NegOne)); 274 275 EXPECT_TRUE( 276 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULT, APInt(BitWidth, -1)) 277 .match(Zero)); 278 EXPECT_TRUE( 279 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULT, APInt(BitWidth, -1)) 280 .match(One)); 281 EXPECT_FALSE( 282 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULT, APInt(BitWidth, -1)) 283 .match(NegOne)); 284 } 285 286 TEST_F(PatternMatchTest, SpecificIntULE) { 287 Type *IntTy = IRB.getInt32Ty(); 288 unsigned BitWidth = IntTy->getScalarSizeInBits(); 289 290 Value *Zero = ConstantInt::get(IntTy, 0); 291 Value *One = ConstantInt::get(IntTy, 1); 292 Value *NegOne = ConstantInt::get(IntTy, -1); 293 294 EXPECT_TRUE( 295 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULE, APInt(BitWidth, 0)) 296 .match(Zero)); 297 EXPECT_FALSE( 298 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULE, APInt(BitWidth, 0)) 299 .match(One)); 300 EXPECT_FALSE( 301 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULE, APInt(BitWidth, 0)) 302 .match(NegOne)); 303 304 EXPECT_TRUE( 305 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULE, APInt(BitWidth, 1)) 306 .match(Zero)); 307 EXPECT_TRUE( 308 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULE, APInt(BitWidth, 1)) 309 .match(One)); 310 EXPECT_FALSE( 311 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULE, APInt(BitWidth, 1)) 312 .match(NegOne)); 313 314 EXPECT_TRUE( 315 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULE, APInt(BitWidth, -1)) 316 .match(Zero)); 317 EXPECT_TRUE( 318 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULE, APInt(BitWidth, -1)) 319 .match(One)); 320 EXPECT_TRUE( 321 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_ULE, APInt(BitWidth, -1)) 322 .match(NegOne)); 323 } 324 325 TEST_F(PatternMatchTest, SpecificIntSGT) { 326 Type *IntTy = IRB.getInt32Ty(); 327 unsigned BitWidth = IntTy->getScalarSizeInBits(); 328 329 Value *Zero = ConstantInt::get(IntTy, 0); 330 Value *One = ConstantInt::get(IntTy, 1); 331 Value *NegOne = ConstantInt::get(IntTy, -1); 332 333 EXPECT_FALSE( 334 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGT, APInt(BitWidth, 0)) 335 .match(Zero)); 336 EXPECT_TRUE( 337 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGT, APInt(BitWidth, 0)) 338 .match(One)); 339 EXPECT_FALSE( 340 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGT, APInt(BitWidth, 0)) 341 .match(NegOne)); 342 343 EXPECT_FALSE( 344 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGT, APInt(BitWidth, 1)) 345 .match(Zero)); 346 EXPECT_FALSE( 347 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGT, APInt(BitWidth, 1)) 348 .match(One)); 349 EXPECT_FALSE( 350 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGT, APInt(BitWidth, 1)) 351 .match(NegOne)); 352 353 EXPECT_TRUE( 354 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGT, APInt(BitWidth, -1)) 355 .match(Zero)); 356 EXPECT_TRUE( 357 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGT, APInt(BitWidth, -1)) 358 .match(One)); 359 EXPECT_FALSE( 360 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGT, APInt(BitWidth, -1)) 361 .match(NegOne)); 362 } 363 364 TEST_F(PatternMatchTest, SpecificIntSGE) { 365 Type *IntTy = IRB.getInt32Ty(); 366 unsigned BitWidth = IntTy->getScalarSizeInBits(); 367 368 Value *Zero = ConstantInt::get(IntTy, 0); 369 Value *One = ConstantInt::get(IntTy, 1); 370 Value *NegOne = ConstantInt::get(IntTy, -1); 371 372 EXPECT_TRUE( 373 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGE, APInt(BitWidth, 0)) 374 .match(Zero)); 375 EXPECT_TRUE( 376 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGE, APInt(BitWidth, 0)) 377 .match(One)); 378 EXPECT_FALSE( 379 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGE, APInt(BitWidth, 0)) 380 .match(NegOne)); 381 382 EXPECT_FALSE( 383 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGE, APInt(BitWidth, 1)) 384 .match(Zero)); 385 EXPECT_TRUE( 386 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGE, APInt(BitWidth, 1)) 387 .match(One)); 388 EXPECT_FALSE( 389 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGE, APInt(BitWidth, 1)) 390 .match(NegOne)); 391 392 EXPECT_TRUE( 393 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGE, APInt(BitWidth, -1)) 394 .match(Zero)); 395 EXPECT_TRUE( 396 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGE, APInt(BitWidth, -1)) 397 .match(One)); 398 EXPECT_TRUE( 399 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SGE, APInt(BitWidth, -1)) 400 .match(NegOne)); 401 } 402 403 TEST_F(PatternMatchTest, SpecificIntSLT) { 404 Type *IntTy = IRB.getInt32Ty(); 405 unsigned BitWidth = IntTy->getScalarSizeInBits(); 406 407 Value *Zero = ConstantInt::get(IntTy, 0); 408 Value *One = ConstantInt::get(IntTy, 1); 409 Value *NegOne = ConstantInt::get(IntTy, -1); 410 411 EXPECT_FALSE( 412 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLT, APInt(BitWidth, 0)) 413 .match(Zero)); 414 EXPECT_FALSE( 415 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLT, APInt(BitWidth, 0)) 416 .match(One)); 417 EXPECT_TRUE( 418 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLT, APInt(BitWidth, 0)) 419 .match(NegOne)); 420 421 EXPECT_TRUE( 422 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLT, APInt(BitWidth, 1)) 423 .match(Zero)); 424 EXPECT_FALSE( 425 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLT, APInt(BitWidth, 1)) 426 .match(One)); 427 EXPECT_TRUE( 428 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLT, APInt(BitWidth, 1)) 429 .match(NegOne)); 430 431 EXPECT_FALSE( 432 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLT, APInt(BitWidth, -1)) 433 .match(Zero)); 434 EXPECT_FALSE( 435 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLT, APInt(BitWidth, -1)) 436 .match(One)); 437 EXPECT_FALSE( 438 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLT, APInt(BitWidth, -1)) 439 .match(NegOne)); 440 } 441 442 TEST_F(PatternMatchTest, SpecificIntSLE) { 443 Type *IntTy = IRB.getInt32Ty(); 444 unsigned BitWidth = IntTy->getScalarSizeInBits(); 445 446 Value *Zero = ConstantInt::get(IntTy, 0); 447 Value *One = ConstantInt::get(IntTy, 1); 448 Value *NegOne = ConstantInt::get(IntTy, -1); 449 450 EXPECT_TRUE( 451 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLE, APInt(BitWidth, 0)) 452 .match(Zero)); 453 EXPECT_FALSE( 454 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLE, APInt(BitWidth, 0)) 455 .match(One)); 456 EXPECT_TRUE( 457 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLE, APInt(BitWidth, 0)) 458 .match(NegOne)); 459 460 EXPECT_TRUE( 461 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLE, APInt(BitWidth, 1)) 462 .match(Zero)); 463 EXPECT_TRUE( 464 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLE, APInt(BitWidth, 1)) 465 .match(One)); 466 EXPECT_TRUE( 467 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLE, APInt(BitWidth, 1)) 468 .match(NegOne)); 469 470 EXPECT_FALSE( 471 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLE, APInt(BitWidth, -1)) 472 .match(Zero)); 473 EXPECT_FALSE( 474 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLE, APInt(BitWidth, -1)) 475 .match(One)); 476 EXPECT_TRUE( 477 m_SpecificInt_ICMP(ICmpInst::Predicate::ICMP_SLE, APInt(BitWidth, -1)) 478 .match(NegOne)); 479 } 480 481 TEST_F(PatternMatchTest, Unless) { 482 Value *X = IRB.CreateAdd(IRB.getInt32(1), IRB.getInt32(0)); 483 484 EXPECT_TRUE(m_Add(m_One(), m_Zero()).match(X)); 485 EXPECT_FALSE(m_Add(m_Zero(), m_One()).match(X)); 486 487 EXPECT_FALSE(m_Unless(m_Add(m_One(), m_Zero())).match(X)); 488 EXPECT_TRUE(m_Unless(m_Add(m_Zero(), m_One())).match(X)); 489 490 EXPECT_TRUE(m_c_Add(m_One(), m_Zero()).match(X)); 491 EXPECT_TRUE(m_c_Add(m_Zero(), m_One()).match(X)); 492 493 EXPECT_FALSE(m_Unless(m_c_Add(m_One(), m_Zero())).match(X)); 494 EXPECT_FALSE(m_Unless(m_c_Add(m_Zero(), m_One())).match(X)); 495 } 496 497 TEST_F(PatternMatchTest, ZExtSExtSelf) { 498 LLVMContext &Ctx = IRB.getContext(); 499 500 Value *One32 = IRB.getInt32(1); 501 Value *One64Z = IRB.CreateZExt(One32, IntegerType::getInt64Ty(Ctx)); 502 Value *One64S = IRB.CreateSExt(One32, IntegerType::getInt64Ty(Ctx)); 503 504 EXPECT_TRUE(m_One().match(One32)); 505 EXPECT_FALSE(m_One().match(One64Z)); 506 EXPECT_FALSE(m_One().match(One64S)); 507 508 EXPECT_FALSE(m_ZExt(m_One()).match(One32)); 509 EXPECT_TRUE(m_ZExt(m_One()).match(One64Z)); 510 EXPECT_FALSE(m_ZExt(m_One()).match(One64S)); 511 512 EXPECT_FALSE(m_SExt(m_One()).match(One32)); 513 EXPECT_FALSE(m_SExt(m_One()).match(One64Z)); 514 EXPECT_TRUE(m_SExt(m_One()).match(One64S)); 515 516 EXPECT_TRUE(m_ZExtOrSelf(m_One()).match(One32)); 517 EXPECT_TRUE(m_ZExtOrSelf(m_One()).match(One64Z)); 518 EXPECT_FALSE(m_ZExtOrSelf(m_One()).match(One64S)); 519 520 EXPECT_TRUE(m_SExtOrSelf(m_One()).match(One32)); 521 EXPECT_FALSE(m_SExtOrSelf(m_One()).match(One64Z)); 522 EXPECT_TRUE(m_SExtOrSelf(m_One()).match(One64S)); 523 524 EXPECT_FALSE(m_ZExtOrSExt(m_One()).match(One32)); 525 EXPECT_TRUE(m_ZExtOrSExt(m_One()).match(One64Z)); 526 EXPECT_TRUE(m_ZExtOrSExt(m_One()).match(One64S)); 527 528 EXPECT_TRUE(m_ZExtOrSExtOrSelf(m_One()).match(One32)); 529 EXPECT_TRUE(m_ZExtOrSExtOrSelf(m_One()).match(One64Z)); 530 EXPECT_TRUE(m_ZExtOrSExtOrSelf(m_One()).match(One64S)); 531 } 532 533 TEST_F(PatternMatchTest, Power2) { 534 Value *C128 = IRB.getInt32(128); 535 Value *CNeg128 = ConstantExpr::getNeg(cast<Constant>(C128)); 536 537 EXPECT_TRUE(m_Power2().match(C128)); 538 EXPECT_FALSE(m_Power2().match(CNeg128)); 539 540 EXPECT_FALSE(m_NegatedPower2().match(C128)); 541 EXPECT_TRUE(m_NegatedPower2().match(CNeg128)); 542 543 Value *CIntMin = IRB.getInt64(APSInt::getSignedMinValue(64).getSExtValue()); 544 Value *CNegIntMin = ConstantExpr::getNeg(cast<Constant>(CIntMin)); 545 546 EXPECT_TRUE(m_Power2().match(CIntMin)); 547 EXPECT_TRUE(m_Power2().match(CNegIntMin)); 548 549 EXPECT_TRUE(m_NegatedPower2().match(CIntMin)); 550 EXPECT_TRUE(m_NegatedPower2().match(CNegIntMin)); 551 } 552 553 TEST_F(PatternMatchTest, Not) { 554 Value *C1 = IRB.getInt32(1); 555 Value *C2 = IRB.getInt32(2); 556 Value *C3 = IRB.getInt32(3); 557 Instruction *Not = BinaryOperator::CreateXor(C1, C2); 558 559 // When `m_Not` does not match the `not` itself, 560 // it should not try to apply the inner matcher. 561 Value *Val = C3; 562 EXPECT_FALSE(m_Not(m_Value(Val)).match(Not)); 563 EXPECT_EQ(Val, C3); 564 Not->deleteValue(); 565 } 566 567 TEST_F(PatternMatchTest, CommutativeDeferredValue) { 568 Value *X = IRB.getInt32(1); 569 Value *Y = IRB.getInt32(2); 570 571 { 572 Value *tX = X; 573 EXPECT_TRUE(match(X, m_Deferred(tX))); 574 EXPECT_FALSE(match(Y, m_Deferred(tX))); 575 } 576 { 577 const Value *tX = X; 578 EXPECT_TRUE(match(X, m_Deferred(tX))); 579 EXPECT_FALSE(match(Y, m_Deferred(tX))); 580 } 581 { 582 Value *const tX = X; 583 EXPECT_TRUE(match(X, m_Deferred(tX))); 584 EXPECT_FALSE(match(Y, m_Deferred(tX))); 585 } 586 { 587 const Value *const tX = X; 588 EXPECT_TRUE(match(X, m_Deferred(tX))); 589 EXPECT_FALSE(match(Y, m_Deferred(tX))); 590 } 591 592 { 593 Value *tX = nullptr; 594 EXPECT_TRUE(match(IRB.CreateAnd(X, X), m_And(m_Value(tX), m_Deferred(tX)))); 595 EXPECT_EQ(tX, X); 596 } 597 { 598 Value *tX = nullptr; 599 EXPECT_FALSE( 600 match(IRB.CreateAnd(X, Y), m_c_And(m_Value(tX), m_Deferred(tX)))); 601 } 602 603 auto checkMatch = [X, Y](Value *Pattern) { 604 Value *tX = nullptr, *tY = nullptr; 605 EXPECT_TRUE(match( 606 Pattern, m_c_And(m_Value(tX), m_c_And(m_Deferred(tX), m_Value(tY))))); 607 EXPECT_EQ(tX, X); 608 EXPECT_EQ(tY, Y); 609 }; 610 611 checkMatch(IRB.CreateAnd(X, IRB.CreateAnd(X, Y))); 612 checkMatch(IRB.CreateAnd(X, IRB.CreateAnd(Y, X))); 613 checkMatch(IRB.CreateAnd(IRB.CreateAnd(X, Y), X)); 614 checkMatch(IRB.CreateAnd(IRB.CreateAnd(Y, X), X)); 615 } 616 617 TEST_F(PatternMatchTest, FloatingPointOrderedMin) { 618 Type *FltTy = IRB.getFloatTy(); 619 Value *L = ConstantFP::get(FltTy, 1.0); 620 Value *R = ConstantFP::get(FltTy, 2.0); 621 Value *MatchL, *MatchR; 622 623 // Test OLT. 624 EXPECT_TRUE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 625 .match(IRB.CreateSelect(IRB.CreateFCmpOLT(L, R), L, R))); 626 EXPECT_EQ(L, MatchL); 627 EXPECT_EQ(R, MatchR); 628 629 // Test OLE. 630 EXPECT_TRUE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 631 .match(IRB.CreateSelect(IRB.CreateFCmpOLE(L, R), L, R))); 632 EXPECT_EQ(L, MatchL); 633 EXPECT_EQ(R, MatchR); 634 635 // Test no match on OGE. 636 EXPECT_FALSE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 637 .match(IRB.CreateSelect(IRB.CreateFCmpOGE(L, R), L, R))); 638 639 // Test no match on OGT. 640 EXPECT_FALSE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 641 .match(IRB.CreateSelect(IRB.CreateFCmpOGT(L, R), L, R))); 642 643 // Test inverted selects. Note, that this "inverts" the ordering, e.g.: 644 // %cmp = fcmp oge L, R 645 // %min = select %cmp R, L 646 // Given L == NaN 647 // the above is expanded to %cmp == false ==> %min = L 648 // which is true for UnordFMin, not OrdFMin, so test that: 649 650 // [OU]GE with inverted select. 651 EXPECT_FALSE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 652 .match(IRB.CreateSelect(IRB.CreateFCmpOGE(L, R), R, L))); 653 EXPECT_TRUE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 654 .match(IRB.CreateSelect(IRB.CreateFCmpUGE(L, R), R, L))); 655 EXPECT_EQ(L, MatchL); 656 EXPECT_EQ(R, MatchR); 657 658 // [OU]GT with inverted select. 659 EXPECT_FALSE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 660 .match(IRB.CreateSelect(IRB.CreateFCmpOGT(L, R), R, L))); 661 EXPECT_TRUE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 662 .match(IRB.CreateSelect(IRB.CreateFCmpUGT(L, R), R, L))); 663 EXPECT_EQ(L, MatchL); 664 EXPECT_EQ(R, MatchR); 665 } 666 667 TEST_F(PatternMatchTest, FloatingPointOrderedMax) { 668 Type *FltTy = IRB.getFloatTy(); 669 Value *L = ConstantFP::get(FltTy, 1.0); 670 Value *R = ConstantFP::get(FltTy, 2.0); 671 Value *MatchL, *MatchR; 672 673 // Test OGT. 674 EXPECT_TRUE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 675 .match(IRB.CreateSelect(IRB.CreateFCmpOGT(L, R), L, R))); 676 EXPECT_EQ(L, MatchL); 677 EXPECT_EQ(R, MatchR); 678 679 // Test OGE. 680 EXPECT_TRUE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 681 .match(IRB.CreateSelect(IRB.CreateFCmpOGE(L, R), L, R))); 682 EXPECT_EQ(L, MatchL); 683 EXPECT_EQ(R, MatchR); 684 685 // Test no match on OLE. 686 EXPECT_FALSE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 687 .match(IRB.CreateSelect(IRB.CreateFCmpOLE(L, R), L, R))); 688 689 // Test no match on OLT. 690 EXPECT_FALSE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 691 .match(IRB.CreateSelect(IRB.CreateFCmpOLT(L, R), L, R))); 692 693 694 // Test inverted selects. Note, that this "inverts" the ordering, e.g.: 695 // %cmp = fcmp ole L, R 696 // %max = select %cmp, R, L 697 // Given L == NaN, 698 // the above is expanded to %cmp == false ==> %max == L 699 // which is true for UnordFMax, not OrdFMax, so test that: 700 701 // [OU]LE with inverted select. 702 EXPECT_FALSE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 703 .match(IRB.CreateSelect(IRB.CreateFCmpOLE(L, R), R, L))); 704 EXPECT_TRUE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 705 .match(IRB.CreateSelect(IRB.CreateFCmpULE(L, R), R, L))); 706 EXPECT_EQ(L, MatchL); 707 EXPECT_EQ(R, MatchR); 708 709 // [OUT]LT with inverted select. 710 EXPECT_FALSE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 711 .match(IRB.CreateSelect(IRB.CreateFCmpOLT(L, R), R, L))); 712 EXPECT_TRUE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 713 .match(IRB.CreateSelect(IRB.CreateFCmpULT(L, R), R, L))); 714 EXPECT_EQ(L, MatchL); 715 EXPECT_EQ(R, MatchR); 716 } 717 718 TEST_F(PatternMatchTest, FloatingPointUnorderedMin) { 719 Type *FltTy = IRB.getFloatTy(); 720 Value *L = ConstantFP::get(FltTy, 1.0); 721 Value *R = ConstantFP::get(FltTy, 2.0); 722 Value *MatchL, *MatchR; 723 724 // Test ULT. 725 EXPECT_TRUE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 726 .match(IRB.CreateSelect(IRB.CreateFCmpULT(L, R), L, R))); 727 EXPECT_EQ(L, MatchL); 728 EXPECT_EQ(R, MatchR); 729 730 // Test ULE. 731 EXPECT_TRUE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 732 .match(IRB.CreateSelect(IRB.CreateFCmpULE(L, R), L, R))); 733 EXPECT_EQ(L, MatchL); 734 EXPECT_EQ(R, MatchR); 735 736 // Test no match on UGE. 737 EXPECT_FALSE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 738 .match(IRB.CreateSelect(IRB.CreateFCmpUGE(L, R), L, R))); 739 740 // Test no match on UGT. 741 EXPECT_FALSE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 742 .match(IRB.CreateSelect(IRB.CreateFCmpUGT(L, R), L, R))); 743 744 // Test inverted selects. Note, that this "inverts" the ordering, e.g.: 745 // %cmp = fcmp uge L, R 746 // %min = select %cmp R, L 747 // Given L == NaN 748 // the above is expanded to %cmp == true ==> %min = R 749 // which is true for OrdFMin, not UnordFMin, so test that: 750 751 // [UO]GE with inverted select. 752 EXPECT_FALSE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 753 .match(IRB.CreateSelect(IRB.CreateFCmpUGE(L, R), R, L))); 754 EXPECT_TRUE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 755 .match(IRB.CreateSelect(IRB.CreateFCmpOGE(L, R), R, L))); 756 EXPECT_EQ(L, MatchL); 757 EXPECT_EQ(R, MatchR); 758 759 // [UO]GT with inverted select. 760 EXPECT_FALSE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 761 .match(IRB.CreateSelect(IRB.CreateFCmpUGT(L, R), R, L))); 762 EXPECT_TRUE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 763 .match(IRB.CreateSelect(IRB.CreateFCmpOGT(L, R), R, L))); 764 EXPECT_EQ(L, MatchL); 765 EXPECT_EQ(R, MatchR); 766 } 767 768 TEST_F(PatternMatchTest, FloatingPointUnorderedMax) { 769 Type *FltTy = IRB.getFloatTy(); 770 Value *L = ConstantFP::get(FltTy, 1.0); 771 Value *R = ConstantFP::get(FltTy, 2.0); 772 Value *MatchL, *MatchR; 773 774 // Test UGT. 775 EXPECT_TRUE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 776 .match(IRB.CreateSelect(IRB.CreateFCmpUGT(L, R), L, R))); 777 EXPECT_EQ(L, MatchL); 778 EXPECT_EQ(R, MatchR); 779 780 // Test UGE. 781 EXPECT_TRUE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 782 .match(IRB.CreateSelect(IRB.CreateFCmpUGE(L, R), L, R))); 783 EXPECT_EQ(L, MatchL); 784 EXPECT_EQ(R, MatchR); 785 786 // Test no match on ULE. 787 EXPECT_FALSE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 788 .match(IRB.CreateSelect(IRB.CreateFCmpULE(L, R), L, R))); 789 790 // Test no match on ULT. 791 EXPECT_FALSE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 792 .match(IRB.CreateSelect(IRB.CreateFCmpULT(L, R), L, R))); 793 794 // Test inverted selects. Note, that this "inverts" the ordering, e.g.: 795 // %cmp = fcmp ule L, R 796 // %max = select %cmp R, L 797 // Given L == NaN 798 // the above is expanded to %cmp == true ==> %max = R 799 // which is true for OrdFMax, not UnordFMax, so test that: 800 801 // [UO]LE with inverted select. 802 EXPECT_FALSE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 803 .match(IRB.CreateSelect(IRB.CreateFCmpULE(L, R), R, L))); 804 EXPECT_TRUE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 805 .match(IRB.CreateSelect(IRB.CreateFCmpOLE(L, R), R, L))); 806 EXPECT_EQ(L, MatchL); 807 EXPECT_EQ(R, MatchR); 808 809 // [UO]LT with inverted select. 810 EXPECT_FALSE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 811 .match(IRB.CreateSelect(IRB.CreateFCmpULT(L, R), R, L))); 812 EXPECT_TRUE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 813 .match(IRB.CreateSelect(IRB.CreateFCmpOLT(L, R), R, L))); 814 EXPECT_EQ(L, MatchL); 815 EXPECT_EQ(R, MatchR); 816 } 817 818 TEST_F(PatternMatchTest, OverflowingBinOps) { 819 Value *L = IRB.getInt32(1); 820 Value *R = IRB.getInt32(2); 821 Value *MatchL, *MatchR; 822 823 EXPECT_TRUE( 824 m_NSWAdd(m_Value(MatchL), m_Value(MatchR)).match(IRB.CreateNSWAdd(L, R))); 825 EXPECT_EQ(L, MatchL); 826 EXPECT_EQ(R, MatchR); 827 MatchL = MatchR = nullptr; 828 EXPECT_TRUE( 829 m_NSWSub(m_Value(MatchL), m_Value(MatchR)).match(IRB.CreateNSWSub(L, R))); 830 EXPECT_EQ(L, MatchL); 831 EXPECT_EQ(R, MatchR); 832 MatchL = MatchR = nullptr; 833 EXPECT_TRUE( 834 m_NSWMul(m_Value(MatchL), m_Value(MatchR)).match(IRB.CreateNSWMul(L, R))); 835 EXPECT_EQ(L, MatchL); 836 EXPECT_EQ(R, MatchR); 837 MatchL = MatchR = nullptr; 838 EXPECT_TRUE(m_NSWShl(m_Value(MatchL), m_Value(MatchR)).match( 839 IRB.CreateShl(L, R, "", /* NUW */ false, /* NSW */ true))); 840 EXPECT_EQ(L, MatchL); 841 EXPECT_EQ(R, MatchR); 842 843 EXPECT_TRUE( 844 m_NUWAdd(m_Value(MatchL), m_Value(MatchR)).match(IRB.CreateNUWAdd(L, R))); 845 EXPECT_EQ(L, MatchL); 846 EXPECT_EQ(R, MatchR); 847 MatchL = MatchR = nullptr; 848 EXPECT_TRUE( 849 m_NUWSub(m_Value(MatchL), m_Value(MatchR)).match(IRB.CreateNUWSub(L, R))); 850 EXPECT_EQ(L, MatchL); 851 EXPECT_EQ(R, MatchR); 852 MatchL = MatchR = nullptr; 853 EXPECT_TRUE( 854 m_NUWMul(m_Value(MatchL), m_Value(MatchR)).match(IRB.CreateNUWMul(L, R))); 855 EXPECT_EQ(L, MatchL); 856 EXPECT_EQ(R, MatchR); 857 MatchL = MatchR = nullptr; 858 EXPECT_TRUE(m_NUWShl(m_Value(MatchL), m_Value(MatchR)).match( 859 IRB.CreateShl(L, R, "", /* NUW */ true, /* NSW */ false))); 860 EXPECT_EQ(L, MatchL); 861 EXPECT_EQ(R, MatchR); 862 863 EXPECT_FALSE(m_NSWAdd(m_Value(), m_Value()).match(IRB.CreateAdd(L, R))); 864 EXPECT_FALSE(m_NSWAdd(m_Value(), m_Value()).match(IRB.CreateNUWAdd(L, R))); 865 EXPECT_FALSE(m_NSWAdd(m_Value(), m_Value()).match(IRB.CreateNSWSub(L, R))); 866 EXPECT_FALSE(m_NSWSub(m_Value(), m_Value()).match(IRB.CreateSub(L, R))); 867 EXPECT_FALSE(m_NSWSub(m_Value(), m_Value()).match(IRB.CreateNUWSub(L, R))); 868 EXPECT_FALSE(m_NSWSub(m_Value(), m_Value()).match(IRB.CreateNSWAdd(L, R))); 869 EXPECT_FALSE(m_NSWMul(m_Value(), m_Value()).match(IRB.CreateMul(L, R))); 870 EXPECT_FALSE(m_NSWMul(m_Value(), m_Value()).match(IRB.CreateNUWMul(L, R))); 871 EXPECT_FALSE(m_NSWMul(m_Value(), m_Value()).match(IRB.CreateNSWAdd(L, R))); 872 EXPECT_FALSE(m_NSWShl(m_Value(), m_Value()).match(IRB.CreateShl(L, R))); 873 EXPECT_FALSE(m_NSWShl(m_Value(), m_Value()).match( 874 IRB.CreateShl(L, R, "", /* NUW */ true, /* NSW */ false))); 875 EXPECT_FALSE(m_NSWShl(m_Value(), m_Value()).match(IRB.CreateNSWAdd(L, R))); 876 877 EXPECT_FALSE(m_NUWAdd(m_Value(), m_Value()).match(IRB.CreateAdd(L, R))); 878 EXPECT_FALSE(m_NUWAdd(m_Value(), m_Value()).match(IRB.CreateNSWAdd(L, R))); 879 EXPECT_FALSE(m_NUWAdd(m_Value(), m_Value()).match(IRB.CreateNUWSub(L, R))); 880 EXPECT_FALSE(m_NUWSub(m_Value(), m_Value()).match(IRB.CreateSub(L, R))); 881 EXPECT_FALSE(m_NUWSub(m_Value(), m_Value()).match(IRB.CreateNSWSub(L, R))); 882 EXPECT_FALSE(m_NUWSub(m_Value(), m_Value()).match(IRB.CreateNUWAdd(L, R))); 883 EXPECT_FALSE(m_NUWMul(m_Value(), m_Value()).match(IRB.CreateMul(L, R))); 884 EXPECT_FALSE(m_NUWMul(m_Value(), m_Value()).match(IRB.CreateNSWMul(L, R))); 885 EXPECT_FALSE(m_NUWMul(m_Value(), m_Value()).match(IRB.CreateNUWAdd(L, R))); 886 EXPECT_FALSE(m_NUWShl(m_Value(), m_Value()).match(IRB.CreateShl(L, R))); 887 EXPECT_FALSE(m_NUWShl(m_Value(), m_Value()).match( 888 IRB.CreateShl(L, R, "", /* NUW */ false, /* NSW */ true))); 889 EXPECT_FALSE(m_NUWShl(m_Value(), m_Value()).match(IRB.CreateNUWAdd(L, R))); 890 } 891 892 TEST_F(PatternMatchTest, LoadStoreOps) { 893 // Create this load/store sequence: 894 // 895 // %p = alloca i32* 896 // %0 = load i32*, i32** %p 897 // store i32 42, i32* %0 898 899 Value *Alloca = IRB.CreateAlloca(IRB.getInt32Ty()); 900 Value *LoadInst = IRB.CreateLoad(IRB.getInt32Ty(), Alloca); 901 Value *FourtyTwo = IRB.getInt32(42); 902 Value *StoreInst = IRB.CreateStore(FourtyTwo, Alloca); 903 Value *MatchLoad, *MatchStoreVal, *MatchStorePointer; 904 905 EXPECT_TRUE(m_Load(m_Value(MatchLoad)).match(LoadInst)); 906 EXPECT_EQ(Alloca, MatchLoad); 907 908 EXPECT_TRUE(m_Load(m_Specific(Alloca)).match(LoadInst)); 909 910 EXPECT_FALSE(m_Load(m_Value(MatchLoad)).match(Alloca)); 911 912 EXPECT_TRUE(m_Store(m_Value(MatchStoreVal), m_Value(MatchStorePointer)) 913 .match(StoreInst)); 914 EXPECT_EQ(FourtyTwo, MatchStoreVal); 915 EXPECT_EQ(Alloca, MatchStorePointer); 916 917 EXPECT_FALSE(m_Store(m_Value(MatchStoreVal), m_Value(MatchStorePointer)) 918 .match(Alloca)); 919 920 EXPECT_TRUE(m_Store(m_SpecificInt(42), m_Specific(Alloca)) 921 .match(StoreInst)); 922 EXPECT_FALSE(m_Store(m_SpecificInt(42), m_Specific(FourtyTwo)) 923 .match(StoreInst)); 924 EXPECT_FALSE(m_Store(m_SpecificInt(43), m_Specific(Alloca)) 925 .match(StoreInst)); 926 } 927 928 TEST_F(PatternMatchTest, VectorOps) { 929 // Build up small tree of vector operations 930 // 931 // Val = 0 + 1 932 // Val2 = Val + 3 933 // VI1 = insertelement <2 x i8> undef, i8 1, i32 0 = <1, undef> 934 // VI2 = insertelement <2 x i8> %VI1, i8 %Val2, i8 %Val = <1, 4> 935 // VI3 = insertelement <2 x i8> %VI1, i8 %Val2, i32 1 = <1, 4> 936 // VI4 = insertelement <2 x i8> %VI1, i8 2, i8 %Val = <1, 2> 937 // 938 // SI1 = shufflevector <2 x i8> %VI1, <2 x i8> undef, zeroinitializer 939 // SI2 = shufflevector <2 x i8> %VI3, <2 x i8> %VI4, <2 x i8> <i8 0, i8 2> 940 // SI3 = shufflevector <2 x i8> %VI3, <2 x i8> undef, zeroinitializer 941 // SI4 = shufflevector <2 x i8> %VI4, <2 x i8> undef, zeroinitializer 942 // 943 // SP1 = VectorSplat(2, i8 2) 944 // SP2 = VectorSplat(2, i8 %Val) 945 Type *VecTy = FixedVectorType::get(IRB.getInt8Ty(), 2); 946 Type *i32 = IRB.getInt32Ty(); 947 Type *i32VecTy = FixedVectorType::get(i32, 2); 948 949 Value *Val = IRB.CreateAdd(IRB.getInt8(0), IRB.getInt8(1)); 950 Value *Val2 = IRB.CreateAdd(Val, IRB.getInt8(3)); 951 952 SmallVector<Constant *, 2> VecElemIdxs; 953 VecElemIdxs.push_back(ConstantInt::get(i32, 0)); 954 VecElemIdxs.push_back(ConstantInt::get(i32, 2)); 955 auto *IdxVec = ConstantVector::get(VecElemIdxs); 956 957 Value *VI1 = IRB.CreateInsertElement(VecTy, IRB.getInt8(1), (uint64_t)0); 958 Value *VI2 = IRB.CreateInsertElement(VI1, Val2, Val); 959 Value *VI3 = IRB.CreateInsertElement(VI1, Val2, (uint64_t)1); 960 Value *VI4 = IRB.CreateInsertElement(VI1, IRB.getInt8(2), Val); 961 962 Value *EX1 = IRB.CreateExtractElement(VI4, Val); 963 Value *EX2 = IRB.CreateExtractElement(VI4, (uint64_t)0); 964 Value *EX3 = IRB.CreateExtractElement(IdxVec, (uint64_t)1); 965 966 Constant *Zero = ConstantAggregateZero::get(i32VecTy); 967 SmallVector<int, 16> ZeroMask; 968 ShuffleVectorInst::getShuffleMask(Zero, ZeroMask); 969 970 Value *SI1 = IRB.CreateShuffleVector(VI1, ZeroMask); 971 Value *SI2 = IRB.CreateShuffleVector(VI3, VI4, IdxVec); 972 Value *SI3 = IRB.CreateShuffleVector(VI3, ZeroMask); 973 Value *SI4 = IRB.CreateShuffleVector(VI4, ZeroMask); 974 975 Value *SP1 = IRB.CreateVectorSplat(2, IRB.getInt8(2)); 976 Value *SP2 = IRB.CreateVectorSplat(2, Val); 977 978 Value *A = nullptr, *B = nullptr, *C = nullptr; 979 980 // Test matching insertelement 981 EXPECT_TRUE(match(VI1, m_InsertElt(m_Value(), m_Value(), m_Value()))); 982 EXPECT_TRUE( 983 match(VI1, m_InsertElt(m_Undef(), m_ConstantInt(), m_ConstantInt()))); 984 EXPECT_TRUE( 985 match(VI1, m_InsertElt(m_Undef(), m_ConstantInt(), m_Zero()))); 986 EXPECT_TRUE( 987 match(VI1, m_InsertElt(m_Undef(), m_SpecificInt(1), m_Zero()))); 988 EXPECT_TRUE(match(VI2, m_InsertElt(m_Value(), m_Value(), m_Value()))); 989 EXPECT_FALSE( 990 match(VI2, m_InsertElt(m_Value(), m_Value(), m_ConstantInt()))); 991 EXPECT_FALSE( 992 match(VI2, m_InsertElt(m_Value(), m_ConstantInt(), m_Value()))); 993 EXPECT_FALSE(match(VI2, m_InsertElt(m_Constant(), m_Value(), m_Value()))); 994 EXPECT_TRUE(match(VI3, m_InsertElt(m_Value(A), m_Value(B), m_Value(C)))); 995 EXPECT_TRUE(A == VI1); 996 EXPECT_TRUE(B == Val2); 997 EXPECT_TRUE(isa<ConstantInt>(C)); 998 A = B = C = nullptr; // reset 999 1000 // Test matching extractelement 1001 EXPECT_TRUE(match(EX1, m_ExtractElt(m_Value(A), m_Value(B)))); 1002 EXPECT_TRUE(A == VI4); 1003 EXPECT_TRUE(B == Val); 1004 A = B = C = nullptr; // reset 1005 EXPECT_FALSE(match(EX1, m_ExtractElt(m_Value(), m_ConstantInt()))); 1006 EXPECT_TRUE(match(EX2, m_ExtractElt(m_Value(), m_ConstantInt()))); 1007 EXPECT_TRUE(match(EX3, m_ExtractElt(m_Constant(), m_ConstantInt()))); 1008 1009 // Test matching shufflevector 1010 ArrayRef<int> Mask; 1011 EXPECT_TRUE(match(SI1, m_Shuffle(m_Value(), m_Undef(), m_ZeroMask()))); 1012 EXPECT_TRUE(match(SI2, m_Shuffle(m_Value(A), m_Value(B), m_Mask(Mask)))); 1013 EXPECT_TRUE(A == VI3); 1014 EXPECT_TRUE(B == VI4); 1015 A = B = C = nullptr; // reset 1016 1017 // Test matching the vector splat pattern 1018 EXPECT_TRUE(match( 1019 SI1, 1020 m_Shuffle(m_InsertElt(m_Undef(), m_SpecificInt(1), m_Zero()), 1021 m_Undef(), m_ZeroMask()))); 1022 EXPECT_FALSE(match( 1023 SI3, m_Shuffle(m_InsertElt(m_Undef(), m_Value(), m_Zero()), 1024 m_Undef(), m_ZeroMask()))); 1025 EXPECT_FALSE(match( 1026 SI4, m_Shuffle(m_InsertElt(m_Undef(), m_Value(), m_Zero()), 1027 m_Undef(), m_ZeroMask()))); 1028 EXPECT_TRUE(match( 1029 SP1, 1030 m_Shuffle(m_InsertElt(m_Undef(), m_SpecificInt(2), m_Zero()), 1031 m_Undef(), m_ZeroMask()))); 1032 EXPECT_TRUE(match( 1033 SP2, m_Shuffle(m_InsertElt(m_Undef(), m_Value(A), m_Zero()), 1034 m_Undef(), m_ZeroMask()))); 1035 EXPECT_TRUE(A == Val); 1036 } 1037 1038 TEST_F(PatternMatchTest, UndefPoisonMix) { 1039 Type *ScalarTy = IRB.getInt8Ty(); 1040 ArrayType *ArrTy = ArrayType::get(ScalarTy, 2); 1041 StructType *StTy = StructType::get(ScalarTy, ScalarTy); 1042 StructType *StTy2 = StructType::get(ScalarTy, StTy); 1043 StructType *StTy3 = StructType::get(StTy, ScalarTy); 1044 Constant *Zero = ConstantInt::getNullValue(ScalarTy); 1045 UndefValue *U = UndefValue::get(ScalarTy); 1046 UndefValue *P = PoisonValue::get(ScalarTy); 1047 1048 EXPECT_TRUE(match(ConstantVector::get({U, P}), m_Undef())); 1049 EXPECT_TRUE(match(ConstantVector::get({P, U}), m_Undef())); 1050 1051 EXPECT_TRUE(match(ConstantArray::get(ArrTy, {U, P}), m_Undef())); 1052 EXPECT_TRUE(match(ConstantArray::get(ArrTy, {P, U}), m_Undef())); 1053 1054 auto *UP = ConstantStruct::get(StTy, {U, P}); 1055 EXPECT_TRUE(match(ConstantStruct::get(StTy2, {U, UP}), m_Undef())); 1056 EXPECT_TRUE(match(ConstantStruct::get(StTy2, {P, UP}), m_Undef())); 1057 EXPECT_TRUE(match(ConstantStruct::get(StTy3, {UP, U}), m_Undef())); 1058 EXPECT_TRUE(match(ConstantStruct::get(StTy3, {UP, P}), m_Undef())); 1059 1060 EXPECT_FALSE(match(ConstantStruct::get(StTy, {U, Zero}), m_Undef())); 1061 EXPECT_FALSE(match(ConstantStruct::get(StTy, {Zero, U}), m_Undef())); 1062 EXPECT_FALSE(match(ConstantStruct::get(StTy, {P, Zero}), m_Undef())); 1063 EXPECT_FALSE(match(ConstantStruct::get(StTy, {Zero, P}), m_Undef())); 1064 1065 EXPECT_FALSE(match(ConstantStruct::get(StTy2, {Zero, UP}), m_Undef())); 1066 EXPECT_FALSE(match(ConstantStruct::get(StTy3, {UP, Zero}), m_Undef())); 1067 } 1068 1069 TEST_F(PatternMatchTest, VectorUndefInt) { 1070 Type *ScalarTy = IRB.getInt8Ty(); 1071 Type *VectorTy = FixedVectorType::get(ScalarTy, 4); 1072 Constant *ScalarUndef = UndefValue::get(ScalarTy); 1073 Constant *VectorUndef = UndefValue::get(VectorTy); 1074 Constant *ScalarZero = Constant::getNullValue(ScalarTy); 1075 Constant *VectorZero = Constant::getNullValue(VectorTy); 1076 1077 SmallVector<Constant *, 4> Elems; 1078 Elems.push_back(ScalarUndef); 1079 Elems.push_back(ScalarZero); 1080 Elems.push_back(ScalarUndef); 1081 Elems.push_back(ScalarZero); 1082 Constant *VectorZeroUndef = ConstantVector::get(Elems); 1083 1084 EXPECT_TRUE(match(ScalarUndef, m_Undef())); 1085 EXPECT_TRUE(match(VectorUndef, m_Undef())); 1086 EXPECT_FALSE(match(ScalarZero, m_Undef())); 1087 EXPECT_FALSE(match(VectorZero, m_Undef())); 1088 EXPECT_FALSE(match(VectorZeroUndef, m_Undef())); 1089 1090 EXPECT_FALSE(match(ScalarUndef, m_Zero())); 1091 EXPECT_FALSE(match(VectorUndef, m_Zero())); 1092 EXPECT_TRUE(match(ScalarZero, m_Zero())); 1093 EXPECT_TRUE(match(VectorZero, m_Zero())); 1094 EXPECT_TRUE(match(VectorZeroUndef, m_Zero())); 1095 1096 const APInt *C; 1097 // Regardless of whether undefs are allowed, 1098 // a fully undef constant does not match. 1099 EXPECT_FALSE(match(ScalarUndef, m_APInt(C))); 1100 EXPECT_FALSE(match(ScalarUndef, m_APIntForbidUndef(C))); 1101 EXPECT_FALSE(match(ScalarUndef, m_APIntAllowUndef(C))); 1102 EXPECT_FALSE(match(VectorUndef, m_APInt(C))); 1103 EXPECT_FALSE(match(VectorUndef, m_APIntForbidUndef(C))); 1104 EXPECT_FALSE(match(VectorUndef, m_APIntAllowUndef(C))); 1105 1106 // We can always match simple constants and simple splats. 1107 C = nullptr; 1108 EXPECT_TRUE(match(ScalarZero, m_APInt(C))); 1109 EXPECT_TRUE(C->isZero()); 1110 C = nullptr; 1111 EXPECT_TRUE(match(ScalarZero, m_APIntForbidUndef(C))); 1112 EXPECT_TRUE(C->isZero()); 1113 C = nullptr; 1114 EXPECT_TRUE(match(ScalarZero, m_APIntAllowUndef(C))); 1115 EXPECT_TRUE(C->isZero()); 1116 C = nullptr; 1117 EXPECT_TRUE(match(VectorZero, m_APInt(C))); 1118 EXPECT_TRUE(C->isZero()); 1119 C = nullptr; 1120 EXPECT_TRUE(match(VectorZero, m_APIntForbidUndef(C))); 1121 EXPECT_TRUE(C->isZero()); 1122 C = nullptr; 1123 EXPECT_TRUE(match(VectorZero, m_APIntAllowUndef(C))); 1124 EXPECT_TRUE(C->isZero()); 1125 1126 // Whether splats with undef can be matched depends on the matcher. 1127 EXPECT_FALSE(match(VectorZeroUndef, m_APInt(C))); 1128 EXPECT_FALSE(match(VectorZeroUndef, m_APIntForbidUndef(C))); 1129 C = nullptr; 1130 EXPECT_TRUE(match(VectorZeroUndef, m_APIntAllowUndef(C))); 1131 EXPECT_TRUE(C->isZero()); 1132 } 1133 1134 TEST_F(PatternMatchTest, VectorUndefFloat) { 1135 Type *ScalarTy = IRB.getFloatTy(); 1136 Type *VectorTy = FixedVectorType::get(ScalarTy, 4); 1137 Constant *ScalarUndef = UndefValue::get(ScalarTy); 1138 Constant *VectorUndef = UndefValue::get(VectorTy); 1139 Constant *ScalarZero = Constant::getNullValue(ScalarTy); 1140 Constant *VectorZero = Constant::getNullValue(VectorTy); 1141 Constant *ScalarPosInf = ConstantFP::getInfinity(ScalarTy, false); 1142 Constant *ScalarNegInf = ConstantFP::getInfinity(ScalarTy, true); 1143 Constant *ScalarNaN = ConstantFP::getNaN(ScalarTy, true); 1144 1145 Constant *VectorZeroUndef = 1146 ConstantVector::get({ScalarUndef, ScalarZero, ScalarUndef, ScalarZero}); 1147 1148 Constant *VectorInfUndef = ConstantVector::get( 1149 {ScalarPosInf, ScalarNegInf, ScalarUndef, ScalarPosInf}); 1150 1151 Constant *VectorNaNUndef = 1152 ConstantVector::get({ScalarUndef, ScalarNaN, ScalarNaN, ScalarNaN}); 1153 1154 EXPECT_TRUE(match(ScalarUndef, m_Undef())); 1155 EXPECT_TRUE(match(VectorUndef, m_Undef())); 1156 EXPECT_FALSE(match(ScalarZero, m_Undef())); 1157 EXPECT_FALSE(match(VectorZero, m_Undef())); 1158 EXPECT_FALSE(match(VectorZeroUndef, m_Undef())); 1159 EXPECT_FALSE(match(VectorInfUndef, m_Undef())); 1160 EXPECT_FALSE(match(VectorNaNUndef, m_Undef())); 1161 1162 EXPECT_FALSE(match(ScalarUndef, m_AnyZeroFP())); 1163 EXPECT_FALSE(match(VectorUndef, m_AnyZeroFP())); 1164 EXPECT_TRUE(match(ScalarZero, m_AnyZeroFP())); 1165 EXPECT_TRUE(match(VectorZero, m_AnyZeroFP())); 1166 EXPECT_TRUE(match(VectorZeroUndef, m_AnyZeroFP())); 1167 EXPECT_FALSE(match(VectorInfUndef, m_AnyZeroFP())); 1168 EXPECT_FALSE(match(VectorNaNUndef, m_AnyZeroFP())); 1169 1170 EXPECT_FALSE(match(ScalarUndef, m_NaN())); 1171 EXPECT_FALSE(match(VectorUndef, m_NaN())); 1172 EXPECT_FALSE(match(VectorZeroUndef, m_NaN())); 1173 EXPECT_FALSE(match(ScalarPosInf, m_NaN())); 1174 EXPECT_FALSE(match(ScalarNegInf, m_NaN())); 1175 EXPECT_TRUE(match(ScalarNaN, m_NaN())); 1176 EXPECT_FALSE(match(VectorInfUndef, m_NaN())); 1177 EXPECT_TRUE(match(VectorNaNUndef, m_NaN())); 1178 1179 EXPECT_FALSE(match(ScalarUndef, m_NonNaN())); 1180 EXPECT_FALSE(match(VectorUndef, m_NonNaN())); 1181 EXPECT_TRUE(match(VectorZeroUndef, m_NonNaN())); 1182 EXPECT_TRUE(match(ScalarPosInf, m_NonNaN())); 1183 EXPECT_TRUE(match(ScalarNegInf, m_NonNaN())); 1184 EXPECT_FALSE(match(ScalarNaN, m_NonNaN())); 1185 EXPECT_TRUE(match(VectorInfUndef, m_NonNaN())); 1186 EXPECT_FALSE(match(VectorNaNUndef, m_NonNaN())); 1187 1188 EXPECT_FALSE(match(ScalarUndef, m_Inf())); 1189 EXPECT_FALSE(match(VectorUndef, m_Inf())); 1190 EXPECT_FALSE(match(VectorZeroUndef, m_Inf())); 1191 EXPECT_TRUE(match(ScalarPosInf, m_Inf())); 1192 EXPECT_TRUE(match(ScalarNegInf, m_Inf())); 1193 EXPECT_FALSE(match(ScalarNaN, m_Inf())); 1194 EXPECT_TRUE(match(VectorInfUndef, m_Inf())); 1195 EXPECT_FALSE(match(VectorNaNUndef, m_Inf())); 1196 1197 EXPECT_FALSE(match(ScalarUndef, m_NonInf())); 1198 EXPECT_FALSE(match(VectorUndef, m_NonInf())); 1199 EXPECT_TRUE(match(VectorZeroUndef, m_NonInf())); 1200 EXPECT_FALSE(match(ScalarPosInf, m_NonInf())); 1201 EXPECT_FALSE(match(ScalarNegInf, m_NonInf())); 1202 EXPECT_TRUE(match(ScalarNaN, m_NonInf())); 1203 EXPECT_FALSE(match(VectorInfUndef, m_NonInf())); 1204 EXPECT_TRUE(match(VectorNaNUndef, m_NonInf())); 1205 1206 EXPECT_FALSE(match(ScalarUndef, m_Finite())); 1207 EXPECT_FALSE(match(VectorUndef, m_Finite())); 1208 EXPECT_TRUE(match(VectorZeroUndef, m_Finite())); 1209 EXPECT_FALSE(match(ScalarPosInf, m_Finite())); 1210 EXPECT_FALSE(match(ScalarNegInf, m_Finite())); 1211 EXPECT_FALSE(match(ScalarNaN, m_Finite())); 1212 EXPECT_FALSE(match(VectorInfUndef, m_Finite())); 1213 EXPECT_FALSE(match(VectorNaNUndef, m_Finite())); 1214 1215 const APFloat *C; 1216 // Regardless of whether undefs are allowed, 1217 // a fully undef constant does not match. 1218 EXPECT_FALSE(match(ScalarUndef, m_APFloat(C))); 1219 EXPECT_FALSE(match(ScalarUndef, m_APFloatForbidUndef(C))); 1220 EXPECT_FALSE(match(ScalarUndef, m_APFloatAllowUndef(C))); 1221 EXPECT_FALSE(match(VectorUndef, m_APFloat(C))); 1222 EXPECT_FALSE(match(VectorUndef, m_APFloatForbidUndef(C))); 1223 EXPECT_FALSE(match(VectorUndef, m_APFloatAllowUndef(C))); 1224 1225 // We can always match simple constants and simple splats. 1226 C = nullptr; 1227 EXPECT_TRUE(match(ScalarZero, m_APFloat(C))); 1228 EXPECT_TRUE(C->isZero()); 1229 C = nullptr; 1230 EXPECT_TRUE(match(ScalarZero, m_APFloatForbidUndef(C))); 1231 EXPECT_TRUE(C->isZero()); 1232 C = nullptr; 1233 EXPECT_TRUE(match(ScalarZero, m_APFloatAllowUndef(C))); 1234 EXPECT_TRUE(C->isZero()); 1235 C = nullptr; 1236 EXPECT_TRUE(match(VectorZero, m_APFloat(C))); 1237 EXPECT_TRUE(C->isZero()); 1238 C = nullptr; 1239 EXPECT_TRUE(match(VectorZero, m_APFloatForbidUndef(C))); 1240 EXPECT_TRUE(C->isZero()); 1241 C = nullptr; 1242 EXPECT_TRUE(match(VectorZero, m_APFloatAllowUndef(C))); 1243 EXPECT_TRUE(C->isZero()); 1244 1245 // Whether splats with undef can be matched depends on the matcher. 1246 EXPECT_FALSE(match(VectorZeroUndef, m_APFloat(C))); 1247 EXPECT_FALSE(match(VectorZeroUndef, m_APFloatForbidUndef(C))); 1248 C = nullptr; 1249 EXPECT_TRUE(match(VectorZeroUndef, m_APFloatAllowUndef(C))); 1250 EXPECT_TRUE(C->isZero()); 1251 C = nullptr; 1252 EXPECT_TRUE(match(VectorZeroUndef, m_Finite(C))); 1253 EXPECT_TRUE(C->isZero()); 1254 } 1255 1256 TEST_F(PatternMatchTest, FloatingPointFNeg) { 1257 Type *FltTy = IRB.getFloatTy(); 1258 Value *One = ConstantFP::get(FltTy, 1.0); 1259 Value *Z = ConstantFP::get(FltTy, 0.0); 1260 Value *NZ = ConstantFP::get(FltTy, -0.0); 1261 Value *V = IRB.CreateFNeg(One); 1262 Value *V1 = IRB.CreateFSub(NZ, One); 1263 Value *V2 = IRB.CreateFSub(Z, One); 1264 Value *V3 = IRB.CreateFAdd(NZ, One); 1265 Value *Match; 1266 1267 // Test FNeg(1.0) 1268 EXPECT_TRUE(match(V, m_FNeg(m_Value(Match)))); 1269 EXPECT_EQ(One, Match); 1270 1271 // Test FSub(-0.0, 1.0) 1272 EXPECT_TRUE(match(V1, m_FNeg(m_Value(Match)))); 1273 EXPECT_EQ(One, Match); 1274 1275 // Test FSub(0.0, 1.0) 1276 EXPECT_FALSE(match(V2, m_FNeg(m_Value(Match)))); 1277 cast<Instruction>(V2)->setHasNoSignedZeros(true); 1278 EXPECT_TRUE(match(V2, m_FNeg(m_Value(Match)))); 1279 EXPECT_EQ(One, Match); 1280 1281 // Test FAdd(-0.0, 1.0) 1282 EXPECT_FALSE(match(V3, m_FNeg(m_Value(Match)))); 1283 } 1284 1285 TEST_F(PatternMatchTest, CondBranchTest) { 1286 BasicBlock *TrueBB = BasicBlock::Create(Ctx, "TrueBB", F); 1287 BasicBlock *FalseBB = BasicBlock::Create(Ctx, "FalseBB", F); 1288 Value *Br1 = IRB.CreateCondBr(IRB.getTrue(), TrueBB, FalseBB); 1289 1290 EXPECT_TRUE(match(Br1, m_Br(m_Value(), m_BasicBlock(), m_BasicBlock()))); 1291 1292 BasicBlock *A, *B; 1293 EXPECT_TRUE(match(Br1, m_Br(m_Value(), m_BasicBlock(A), m_BasicBlock(B)))); 1294 EXPECT_EQ(TrueBB, A); 1295 EXPECT_EQ(FalseBB, B); 1296 1297 EXPECT_FALSE( 1298 match(Br1, m_Br(m_Value(), m_SpecificBB(FalseBB), m_BasicBlock()))); 1299 EXPECT_FALSE( 1300 match(Br1, m_Br(m_Value(), m_BasicBlock(), m_SpecificBB(TrueBB)))); 1301 EXPECT_FALSE( 1302 match(Br1, m_Br(m_Value(), m_SpecificBB(FalseBB), m_BasicBlock(TrueBB)))); 1303 EXPECT_TRUE( 1304 match(Br1, m_Br(m_Value(), m_SpecificBB(TrueBB), m_BasicBlock(FalseBB)))); 1305 1306 // Check we can use m_Deferred with branches. 1307 EXPECT_FALSE(match(Br1, m_Br(m_Value(), m_BasicBlock(A), m_Deferred(A)))); 1308 Value *Br2 = IRB.CreateCondBr(IRB.getTrue(), TrueBB, TrueBB); 1309 A = nullptr; 1310 EXPECT_TRUE(match(Br2, m_Br(m_Value(), m_BasicBlock(A), m_Deferred(A)))); 1311 } 1312 1313 TEST_F(PatternMatchTest, WithOverflowInst) { 1314 Value *Add = IRB.CreateBinaryIntrinsic(Intrinsic::uadd_with_overflow, 1315 IRB.getInt32(0), IRB.getInt32(0)); 1316 Value *Add0 = IRB.CreateExtractValue(Add, 0); 1317 Value *Add1 = IRB.CreateExtractValue(Add, 1); 1318 1319 EXPECT_TRUE(match(Add0, m_ExtractValue<0>(m_Value()))); 1320 EXPECT_FALSE(match(Add0, m_ExtractValue<1>(m_Value()))); 1321 EXPECT_FALSE(match(Add1, m_ExtractValue<0>(m_Value()))); 1322 EXPECT_TRUE(match(Add1, m_ExtractValue<1>(m_Value()))); 1323 EXPECT_FALSE(match(Add, m_ExtractValue<1>(m_Value()))); 1324 EXPECT_FALSE(match(Add, m_ExtractValue<1>(m_Value()))); 1325 1326 WithOverflowInst *WOI; 1327 EXPECT_FALSE(match(Add0, m_WithOverflowInst(WOI))); 1328 EXPECT_FALSE(match(Add1, m_WithOverflowInst(WOI))); 1329 EXPECT_TRUE(match(Add, m_WithOverflowInst(WOI))); 1330 1331 EXPECT_TRUE(match(Add0, m_ExtractValue<0>(m_WithOverflowInst(WOI)))); 1332 EXPECT_EQ(Add, WOI); 1333 EXPECT_TRUE(match(Add1, m_ExtractValue<1>(m_WithOverflowInst(WOI)))); 1334 EXPECT_EQ(Add, WOI); 1335 } 1336 1337 TEST_F(PatternMatchTest, MinMaxIntrinsics) { 1338 Type *Ty = IRB.getInt32Ty(); 1339 Value *L = ConstantInt::get(Ty, 1); 1340 Value *R = ConstantInt::get(Ty, 2); 1341 Value *MatchL, *MatchR; 1342 1343 // Check for intrinsic ID match and capture of operands. 1344 EXPECT_TRUE(m_SMax(m_Value(MatchL), m_Value(MatchR)) 1345 .match(IRB.CreateBinaryIntrinsic(Intrinsic::smax, L, R))); 1346 EXPECT_EQ(L, MatchL); 1347 EXPECT_EQ(R, MatchR); 1348 1349 EXPECT_TRUE(m_SMin(m_Value(MatchL), m_Value(MatchR)) 1350 .match(IRB.CreateBinaryIntrinsic(Intrinsic::smin, L, R))); 1351 EXPECT_EQ(L, MatchL); 1352 EXPECT_EQ(R, MatchR); 1353 1354 EXPECT_TRUE(m_UMax(m_Value(MatchL), m_Value(MatchR)) 1355 .match(IRB.CreateBinaryIntrinsic(Intrinsic::umax, L, R))); 1356 EXPECT_EQ(L, MatchL); 1357 EXPECT_EQ(R, MatchR); 1358 1359 EXPECT_TRUE(m_UMin(m_Value(MatchL), m_Value(MatchR)) 1360 .match(IRB.CreateBinaryIntrinsic(Intrinsic::umin, L, R))); 1361 EXPECT_EQ(L, MatchL); 1362 EXPECT_EQ(R, MatchR); 1363 1364 // Check for intrinsic ID mismatch. 1365 EXPECT_FALSE(m_SMax(m_Value(MatchL), m_Value(MatchR)) 1366 .match(IRB.CreateBinaryIntrinsic(Intrinsic::smin, L, R))); 1367 EXPECT_FALSE(m_SMin(m_Value(MatchL), m_Value(MatchR)) 1368 .match(IRB.CreateBinaryIntrinsic(Intrinsic::umax, L, R))); 1369 EXPECT_FALSE(m_UMax(m_Value(MatchL), m_Value(MatchR)) 1370 .match(IRB.CreateBinaryIntrinsic(Intrinsic::umin, L, R))); 1371 EXPECT_FALSE(m_UMin(m_Value(MatchL), m_Value(MatchR)) 1372 .match(IRB.CreateBinaryIntrinsic(Intrinsic::smax, L, R))); 1373 } 1374 1375 TEST_F(PatternMatchTest, IntrinsicMatcher) { 1376 Value *Name = IRB.CreateAlloca(IRB.getInt8Ty()); 1377 Value *Hash = IRB.getInt64(0); 1378 Value *Num = IRB.getInt32(1); 1379 Value *Index = IRB.getInt32(2); 1380 Value *Step = IRB.getInt64(3); 1381 1382 Value *Ops[] = {Name, Hash, Num, Index, Step}; 1383 Module *M = BB->getParent()->getParent(); 1384 Function *TheFn = 1385 Intrinsic::getDeclaration(M, Intrinsic::instrprof_increment_step); 1386 1387 Value *Intrinsic5 = CallInst::Create(TheFn, Ops, "", BB); 1388 1389 // Match without capturing. 1390 EXPECT_TRUE(match( 1391 Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>( 1392 m_Value(), m_Value(), m_Value(), m_Value(), m_Value()))); 1393 EXPECT_FALSE(match( 1394 Intrinsic5, m_Intrinsic<Intrinsic::memmove>( 1395 m_Value(), m_Value(), m_Value(), m_Value(), m_Value()))); 1396 1397 // Match with capturing. 1398 Value *Arg1 = nullptr; 1399 Value *Arg2 = nullptr; 1400 Value *Arg3 = nullptr; 1401 Value *Arg4 = nullptr; 1402 Value *Arg5 = nullptr; 1403 EXPECT_TRUE( 1404 match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>( 1405 m_Value(Arg1), m_Value(Arg2), m_Value(Arg3), 1406 m_Value(Arg4), m_Value(Arg5)))); 1407 EXPECT_EQ(Arg1, Name); 1408 EXPECT_EQ(Arg2, Hash); 1409 EXPECT_EQ(Arg3, Num); 1410 EXPECT_EQ(Arg4, Index); 1411 EXPECT_EQ(Arg5, Step); 1412 1413 // Match specific second argument. 1414 EXPECT_TRUE( 1415 match(Intrinsic5, 1416 m_Intrinsic<Intrinsic::instrprof_increment_step>( 1417 m_Value(), m_SpecificInt(0), m_Value(), m_Value(), m_Value()))); 1418 EXPECT_FALSE( 1419 match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>( 1420 m_Value(), m_SpecificInt(10), m_Value(), m_Value(), 1421 m_Value()))); 1422 1423 // Match specific third argument. 1424 EXPECT_TRUE( 1425 match(Intrinsic5, 1426 m_Intrinsic<Intrinsic::instrprof_increment_step>( 1427 m_Value(), m_Value(), m_SpecificInt(1), m_Value(), m_Value()))); 1428 EXPECT_FALSE( 1429 match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>( 1430 m_Value(), m_Value(), m_SpecificInt(10), m_Value(), 1431 m_Value()))); 1432 1433 // Match specific fourth argument. 1434 EXPECT_TRUE( 1435 match(Intrinsic5, 1436 m_Intrinsic<Intrinsic::instrprof_increment_step>( 1437 m_Value(), m_Value(), m_Value(), m_SpecificInt(2), m_Value()))); 1438 EXPECT_FALSE( 1439 match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>( 1440 m_Value(), m_Value(), m_Value(), m_SpecificInt(10), 1441 m_Value()))); 1442 1443 // Match specific fifth argument. 1444 EXPECT_TRUE( 1445 match(Intrinsic5, 1446 m_Intrinsic<Intrinsic::instrprof_increment_step>( 1447 m_Value(), m_Value(), m_Value(), m_Value(), m_SpecificInt(3)))); 1448 EXPECT_FALSE( 1449 match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>( 1450 m_Value(), m_Value(), m_Value(), m_Value(), 1451 m_SpecificInt(10)))); 1452 } 1453 1454 namespace { 1455 1456 struct is_unsigned_zero_pred { 1457 bool isValue(const APInt &C) { return C.isZero(); } 1458 }; 1459 1460 struct is_float_zero_pred { 1461 bool isValue(const APFloat &C) { return C.isZero(); } 1462 }; 1463 1464 template <typename T> struct always_true_pred { 1465 bool isValue(const T &) { return true; } 1466 }; 1467 1468 template <typename T> struct always_false_pred { 1469 bool isValue(const T &) { return false; } 1470 }; 1471 1472 struct is_unsigned_max_pred { 1473 bool isValue(const APInt &C) { return C.isMaxValue(); } 1474 }; 1475 1476 struct is_float_nan_pred { 1477 bool isValue(const APFloat &C) { return C.isNaN(); } 1478 }; 1479 1480 } // namespace 1481 1482 TEST_F(PatternMatchTest, ConstantPredicateType) { 1483 1484 // Scalar integer 1485 APInt U32Max = APInt::getAllOnes(32); 1486 APInt U32Zero = APInt::getZero(32); 1487 APInt U32DeadBeef(32, 0xDEADBEEF); 1488 1489 Type *U32Ty = Type::getInt32Ty(Ctx); 1490 1491 Constant *CU32Max = Constant::getIntegerValue(U32Ty, U32Max); 1492 Constant *CU32Zero = Constant::getIntegerValue(U32Ty, U32Zero); 1493 Constant *CU32DeadBeef = Constant::getIntegerValue(U32Ty, U32DeadBeef); 1494 1495 EXPECT_TRUE(match(CU32Max, cst_pred_ty<is_unsigned_max_pred>())); 1496 EXPECT_FALSE(match(CU32Max, cst_pred_ty<is_unsigned_zero_pred>())); 1497 EXPECT_TRUE(match(CU32Max, cst_pred_ty<always_true_pred<APInt>>())); 1498 EXPECT_FALSE(match(CU32Max, cst_pred_ty<always_false_pred<APInt>>())); 1499 1500 EXPECT_FALSE(match(CU32Zero, cst_pred_ty<is_unsigned_max_pred>())); 1501 EXPECT_TRUE(match(CU32Zero, cst_pred_ty<is_unsigned_zero_pred>())); 1502 EXPECT_TRUE(match(CU32Zero, cst_pred_ty<always_true_pred<APInt>>())); 1503 EXPECT_FALSE(match(CU32Zero, cst_pred_ty<always_false_pred<APInt>>())); 1504 1505 EXPECT_FALSE(match(CU32DeadBeef, cst_pred_ty<is_unsigned_max_pred>())); 1506 EXPECT_FALSE(match(CU32DeadBeef, cst_pred_ty<is_unsigned_zero_pred>())); 1507 EXPECT_TRUE(match(CU32DeadBeef, cst_pred_ty<always_true_pred<APInt>>())); 1508 EXPECT_FALSE(match(CU32DeadBeef, cst_pred_ty<always_false_pred<APInt>>())); 1509 1510 // Scalar float 1511 APFloat F32NaN = APFloat::getNaN(APFloat::IEEEsingle()); 1512 APFloat F32Zero = APFloat::getZero(APFloat::IEEEsingle()); 1513 APFloat F32Pi(3.14f); 1514 1515 Type *F32Ty = Type::getFloatTy(Ctx); 1516 1517 Constant *CF32NaN = ConstantFP::get(F32Ty, F32NaN); 1518 Constant *CF32Zero = ConstantFP::get(F32Ty, F32Zero); 1519 Constant *CF32Pi = ConstantFP::get(F32Ty, F32Pi); 1520 1521 EXPECT_TRUE(match(CF32NaN, cstfp_pred_ty<is_float_nan_pred>())); 1522 EXPECT_FALSE(match(CF32NaN, cstfp_pred_ty<is_float_zero_pred>())); 1523 EXPECT_TRUE(match(CF32NaN, cstfp_pred_ty<always_true_pred<APFloat>>())); 1524 EXPECT_FALSE(match(CF32NaN, cstfp_pred_ty<always_false_pred<APFloat>>())); 1525 1526 EXPECT_FALSE(match(CF32Zero, cstfp_pred_ty<is_float_nan_pred>())); 1527 EXPECT_TRUE(match(CF32Zero, cstfp_pred_ty<is_float_zero_pred>())); 1528 EXPECT_TRUE(match(CF32Zero, cstfp_pred_ty<always_true_pred<APFloat>>())); 1529 EXPECT_FALSE(match(CF32Zero, cstfp_pred_ty<always_false_pred<APFloat>>())); 1530 1531 EXPECT_FALSE(match(CF32Pi, cstfp_pred_ty<is_float_nan_pred>())); 1532 EXPECT_FALSE(match(CF32Pi, cstfp_pred_ty<is_float_zero_pred>())); 1533 EXPECT_TRUE(match(CF32Pi, cstfp_pred_ty<always_true_pred<APFloat>>())); 1534 EXPECT_FALSE(match(CF32Pi, cstfp_pred_ty<always_false_pred<APFloat>>())); 1535 1536 auto FixedEC = ElementCount::getFixed(4); 1537 auto ScalableEC = ElementCount::getScalable(4); 1538 1539 // Vector splat 1540 1541 for (auto EC : {FixedEC, ScalableEC}) { 1542 // integer 1543 1544 Constant *CSplatU32Max = ConstantVector::getSplat(EC, CU32Max); 1545 Constant *CSplatU32Zero = ConstantVector::getSplat(EC, CU32Zero); 1546 Constant *CSplatU32DeadBeef = ConstantVector::getSplat(EC, CU32DeadBeef); 1547 1548 EXPECT_TRUE(match(CSplatU32Max, cst_pred_ty<is_unsigned_max_pred>())); 1549 EXPECT_FALSE(match(CSplatU32Max, cst_pred_ty<is_unsigned_zero_pred>())); 1550 EXPECT_TRUE(match(CSplatU32Max, cst_pred_ty<always_true_pred<APInt>>())); 1551 EXPECT_FALSE(match(CSplatU32Max, cst_pred_ty<always_false_pred<APInt>>())); 1552 1553 EXPECT_FALSE(match(CSplatU32Zero, cst_pred_ty<is_unsigned_max_pred>())); 1554 EXPECT_TRUE(match(CSplatU32Zero, cst_pred_ty<is_unsigned_zero_pred>())); 1555 EXPECT_TRUE(match(CSplatU32Zero, cst_pred_ty<always_true_pred<APInt>>())); 1556 EXPECT_FALSE(match(CSplatU32Zero, cst_pred_ty<always_false_pred<APInt>>())); 1557 1558 EXPECT_FALSE(match(CSplatU32DeadBeef, cst_pred_ty<is_unsigned_max_pred>())); 1559 EXPECT_FALSE( 1560 match(CSplatU32DeadBeef, cst_pred_ty<is_unsigned_zero_pred>())); 1561 EXPECT_TRUE( 1562 match(CSplatU32DeadBeef, cst_pred_ty<always_true_pred<APInt>>())); 1563 EXPECT_FALSE( 1564 match(CSplatU32DeadBeef, cst_pred_ty<always_false_pred<APInt>>())); 1565 1566 // float 1567 1568 Constant *CSplatF32NaN = ConstantVector::getSplat(EC, CF32NaN); 1569 Constant *CSplatF32Zero = ConstantVector::getSplat(EC, CF32Zero); 1570 Constant *CSplatF32Pi = ConstantVector::getSplat(EC, CF32Pi); 1571 1572 EXPECT_TRUE(match(CSplatF32NaN, cstfp_pred_ty<is_float_nan_pred>())); 1573 EXPECT_FALSE(match(CSplatF32NaN, cstfp_pred_ty<is_float_zero_pred>())); 1574 EXPECT_TRUE( 1575 match(CSplatF32NaN, cstfp_pred_ty<always_true_pred<APFloat>>())); 1576 EXPECT_FALSE( 1577 match(CSplatF32NaN, cstfp_pred_ty<always_false_pred<APFloat>>())); 1578 1579 EXPECT_FALSE(match(CSplatF32Zero, cstfp_pred_ty<is_float_nan_pred>())); 1580 EXPECT_TRUE(match(CSplatF32Zero, cstfp_pred_ty<is_float_zero_pred>())); 1581 EXPECT_TRUE( 1582 match(CSplatF32Zero, cstfp_pred_ty<always_true_pred<APFloat>>())); 1583 EXPECT_FALSE( 1584 match(CSplatF32Zero, cstfp_pred_ty<always_false_pred<APFloat>>())); 1585 1586 EXPECT_FALSE(match(CSplatF32Pi, cstfp_pred_ty<is_float_nan_pred>())); 1587 EXPECT_FALSE(match(CSplatF32Pi, cstfp_pred_ty<is_float_zero_pred>())); 1588 EXPECT_TRUE(match(CSplatF32Pi, cstfp_pred_ty<always_true_pred<APFloat>>())); 1589 EXPECT_FALSE( 1590 match(CSplatF32Pi, cstfp_pred_ty<always_false_pred<APFloat>>())); 1591 } 1592 1593 // Int arbitrary vector 1594 1595 Constant *CMixedU32 = ConstantVector::get({CU32Max, CU32Zero, CU32DeadBeef}); 1596 Constant *CU32Undef = UndefValue::get(U32Ty); 1597 Constant *CU32MaxWithUndef = 1598 ConstantVector::get({CU32Undef, CU32Max, CU32Undef}); 1599 1600 EXPECT_FALSE(match(CMixedU32, cst_pred_ty<is_unsigned_max_pred>())); 1601 EXPECT_FALSE(match(CMixedU32, cst_pred_ty<is_unsigned_zero_pred>())); 1602 EXPECT_TRUE(match(CMixedU32, cst_pred_ty<always_true_pred<APInt>>())); 1603 EXPECT_FALSE(match(CMixedU32, cst_pred_ty<always_false_pred<APInt>>())); 1604 1605 EXPECT_TRUE(match(CU32MaxWithUndef, cst_pred_ty<is_unsigned_max_pred>())); 1606 EXPECT_FALSE(match(CU32MaxWithUndef, cst_pred_ty<is_unsigned_zero_pred>())); 1607 EXPECT_TRUE(match(CU32MaxWithUndef, cst_pred_ty<always_true_pred<APInt>>())); 1608 EXPECT_FALSE( 1609 match(CU32MaxWithUndef, cst_pred_ty<always_false_pred<APInt>>())); 1610 1611 // Float arbitrary vector 1612 1613 Constant *CMixedF32 = ConstantVector::get({CF32NaN, CF32Zero, CF32Pi}); 1614 Constant *CF32Undef = UndefValue::get(F32Ty); 1615 Constant *CF32NaNWithUndef = 1616 ConstantVector::get({CF32Undef, CF32NaN, CF32Undef}); 1617 1618 EXPECT_FALSE(match(CMixedF32, cstfp_pred_ty<is_float_nan_pred>())); 1619 EXPECT_FALSE(match(CMixedF32, cstfp_pred_ty<is_float_zero_pred>())); 1620 EXPECT_TRUE(match(CMixedF32, cstfp_pred_ty<always_true_pred<APFloat>>())); 1621 EXPECT_FALSE(match(CMixedF32, cstfp_pred_ty<always_false_pred<APFloat>>())); 1622 1623 EXPECT_TRUE(match(CF32NaNWithUndef, cstfp_pred_ty<is_float_nan_pred>())); 1624 EXPECT_FALSE(match(CF32NaNWithUndef, cstfp_pred_ty<is_float_zero_pred>())); 1625 EXPECT_TRUE( 1626 match(CF32NaNWithUndef, cstfp_pred_ty<always_true_pred<APFloat>>())); 1627 EXPECT_FALSE( 1628 match(CF32NaNWithUndef, cstfp_pred_ty<always_false_pred<APFloat>>())); 1629 } 1630 1631 TEST_F(PatternMatchTest, InsertValue) { 1632 Type *StructTy = StructType::create(IRB.getContext(), 1633 {IRB.getInt32Ty(), IRB.getInt64Ty()}); 1634 Value *Ins0 = 1635 IRB.CreateInsertValue(UndefValue::get(StructTy), IRB.getInt32(20), 0); 1636 Value *Ins1 = IRB.CreateInsertValue(Ins0, IRB.getInt64(90), 1); 1637 1638 EXPECT_TRUE(match(Ins0, m_InsertValue<0>(m_Value(), m_Value()))); 1639 EXPECT_FALSE(match(Ins0, m_InsertValue<1>(m_Value(), m_Value()))); 1640 EXPECT_FALSE(match(Ins1, m_InsertValue<0>(m_Value(), m_Value()))); 1641 EXPECT_TRUE(match(Ins1, m_InsertValue<1>(m_Value(), m_Value()))); 1642 1643 EXPECT_TRUE(match(Ins0, m_InsertValue<0>(m_Undef(), m_SpecificInt(20)))); 1644 EXPECT_FALSE(match(Ins0, m_InsertValue<0>(m_Undef(), m_SpecificInt(0)))); 1645 1646 EXPECT_TRUE( 1647 match(Ins1, m_InsertValue<1>(m_InsertValue<0>(m_Value(), m_Value()), 1648 m_SpecificInt(90)))); 1649 EXPECT_FALSE(match(IRB.getInt64(99), m_InsertValue<0>(m_Value(), m_Value()))); 1650 } 1651 1652 TEST_F(PatternMatchTest, LogicalSelects) { 1653 Value *Alloca = IRB.CreateAlloca(IRB.getInt1Ty()); 1654 Value *X = IRB.CreateLoad(IRB.getInt1Ty(), Alloca); 1655 Value *Y = IRB.CreateLoad(IRB.getInt1Ty(), Alloca); 1656 Constant *T = IRB.getInt1(true); 1657 Constant *F = IRB.getInt1(false); 1658 Value *And = IRB.CreateSelect(X, Y, F); 1659 Value *Or = IRB.CreateSelect(X, T, Y); 1660 1661 // Logical and: 1662 // Check basic no-capture logic - opcode and constant must match. 1663 EXPECT_TRUE(match(And, m_LogicalAnd(m_Value(), m_Value()))); 1664 EXPECT_TRUE(match(And, m_c_LogicalAnd(m_Value(), m_Value()))); 1665 EXPECT_FALSE(match(And, m_LogicalOr(m_Value(), m_Value()))); 1666 EXPECT_FALSE(match(And, m_c_LogicalOr(m_Value(), m_Value()))); 1667 1668 // Check with captures. 1669 EXPECT_TRUE(match(And, m_LogicalAnd(m_Specific(X), m_Value()))); 1670 EXPECT_TRUE(match(And, m_LogicalAnd(m_Value(), m_Specific(Y)))); 1671 EXPECT_TRUE(match(And, m_LogicalAnd(m_Specific(X), m_Specific(Y)))); 1672 1673 EXPECT_FALSE(match(And, m_LogicalAnd(m_Specific(Y), m_Value()))); 1674 EXPECT_FALSE(match(And, m_LogicalAnd(m_Value(), m_Specific(X)))); 1675 EXPECT_FALSE(match(And, m_LogicalAnd(m_Specific(Y), m_Specific(X)))); 1676 1677 EXPECT_FALSE(match(And, m_LogicalAnd(m_Specific(X), m_Specific(X)))); 1678 EXPECT_FALSE(match(And, m_LogicalAnd(m_Specific(Y), m_Specific(Y)))); 1679 1680 // Check captures for commutative match. 1681 EXPECT_TRUE(match(And, m_c_LogicalAnd(m_Specific(X), m_Value()))); 1682 EXPECT_TRUE(match(And, m_c_LogicalAnd(m_Value(), m_Specific(Y)))); 1683 EXPECT_TRUE(match(And, m_c_LogicalAnd(m_Specific(X), m_Specific(Y)))); 1684 1685 EXPECT_TRUE(match(And, m_c_LogicalAnd(m_Specific(Y), m_Value()))); 1686 EXPECT_TRUE(match(And, m_c_LogicalAnd(m_Value(), m_Specific(X)))); 1687 EXPECT_TRUE(match(And, m_c_LogicalAnd(m_Specific(Y), m_Specific(X)))); 1688 1689 EXPECT_FALSE(match(And, m_c_LogicalAnd(m_Specific(X), m_Specific(X)))); 1690 EXPECT_FALSE(match(And, m_c_LogicalAnd(m_Specific(Y), m_Specific(Y)))); 1691 1692 // Logical or: 1693 // Check basic no-capture logic - opcode and constant must match. 1694 EXPECT_TRUE(match(Or, m_LogicalOr(m_Value(), m_Value()))); 1695 EXPECT_TRUE(match(Or, m_c_LogicalOr(m_Value(), m_Value()))); 1696 EXPECT_FALSE(match(Or, m_LogicalAnd(m_Value(), m_Value()))); 1697 EXPECT_FALSE(match(Or, m_c_LogicalAnd(m_Value(), m_Value()))); 1698 1699 // Check with captures. 1700 EXPECT_TRUE(match(Or, m_LogicalOr(m_Specific(X), m_Value()))); 1701 EXPECT_TRUE(match(Or, m_LogicalOr(m_Value(), m_Specific(Y)))); 1702 EXPECT_TRUE(match(Or, m_LogicalOr(m_Specific(X), m_Specific(Y)))); 1703 1704 EXPECT_FALSE(match(Or, m_LogicalOr(m_Specific(Y), m_Value()))); 1705 EXPECT_FALSE(match(Or, m_LogicalOr(m_Value(), m_Specific(X)))); 1706 EXPECT_FALSE(match(Or, m_LogicalOr(m_Specific(Y), m_Specific(X)))); 1707 1708 EXPECT_FALSE(match(Or, m_LogicalOr(m_Specific(X), m_Specific(X)))); 1709 EXPECT_FALSE(match(Or, m_LogicalOr(m_Specific(Y), m_Specific(Y)))); 1710 1711 // Check captures for commutative match. 1712 EXPECT_TRUE(match(Or, m_c_LogicalOr(m_Specific(X), m_Value()))); 1713 EXPECT_TRUE(match(Or, m_c_LogicalOr(m_Value(), m_Specific(Y)))); 1714 EXPECT_TRUE(match(Or, m_c_LogicalOr(m_Specific(X), m_Specific(Y)))); 1715 1716 EXPECT_TRUE(match(Or, m_c_LogicalOr(m_Specific(Y), m_Value()))); 1717 EXPECT_TRUE(match(Or, m_c_LogicalOr(m_Value(), m_Specific(X)))); 1718 EXPECT_TRUE(match(Or, m_c_LogicalOr(m_Specific(Y), m_Specific(X)))); 1719 1720 EXPECT_FALSE(match(Or, m_c_LogicalOr(m_Specific(X), m_Specific(X)))); 1721 EXPECT_FALSE(match(Or, m_c_LogicalOr(m_Specific(Y), m_Specific(Y)))); 1722 } 1723 1724 TEST_F(PatternMatchTest, VectorLogicalSelects) { 1725 Type *i1 = IRB.getInt1Ty(); 1726 Type *v3i1 = FixedVectorType::get(i1, 3); 1727 1728 Value *Alloca = IRB.CreateAlloca(i1); 1729 Value *AllocaVec = IRB.CreateAlloca(v3i1); 1730 Value *Scalar = IRB.CreateLoad(i1, Alloca); 1731 Value *Vector = IRB.CreateLoad(v3i1, AllocaVec); 1732 Constant *F = Constant::getNullValue(v3i1); 1733 Constant *T = Constant::getAllOnesValue(v3i1); 1734 1735 // select <3 x i1> Vector, <3 x i1> Vector, <3 x i1> <i1 0, i1 0, i1 0> 1736 Value *VecAnd = IRB.CreateSelect(Vector, Vector, F); 1737 1738 // select i1 Scalar, <3 x i1> Vector, <3 x i1> <i1 0, i1 0, i1 0> 1739 Value *MixedTypeAnd = IRB.CreateSelect(Scalar, Vector, F); 1740 1741 // select <3 x i1> Vector, <3 x i1> <i1 1, i1 1, i1 1>, <3 x i1> Vector 1742 Value *VecOr = IRB.CreateSelect(Vector, T, Vector); 1743 1744 // select i1 Scalar, <3 x i1> <i1 1, i1 1, i1 1>, <3 x i1> Vector 1745 Value *MixedTypeOr = IRB.CreateSelect(Scalar, T, Vector); 1746 1747 // We allow matching a real vector logical select, 1748 // but not a scalar select of vector bools. 1749 EXPECT_TRUE(match(VecAnd, m_LogicalAnd(m_Value(), m_Value()))); 1750 EXPECT_FALSE(match(MixedTypeAnd, m_LogicalAnd(m_Value(), m_Value()))); 1751 EXPECT_TRUE(match(VecOr, m_LogicalOr(m_Value(), m_Value()))); 1752 EXPECT_FALSE(match(MixedTypeOr, m_LogicalOr(m_Value(), m_Value()))); 1753 } 1754 1755 TEST_F(PatternMatchTest, VScale) { 1756 DataLayout DL = M->getDataLayout(); 1757 1758 Type *VecTy = ScalableVectorType::get(IRB.getInt8Ty(), 1); 1759 Type *VecPtrTy = VecTy->getPointerTo(); 1760 Value *NullPtrVec = Constant::getNullValue(VecPtrTy); 1761 Value *GEP = IRB.CreateGEP(VecTy, NullPtrVec, IRB.getInt64(1)); 1762 Value *PtrToInt = IRB.CreatePtrToInt(GEP, DL.getIntPtrType(GEP->getType())); 1763 EXPECT_TRUE(match(PtrToInt, m_VScale())); 1764 1765 // This used to cause assertion failures when attempting to match m_VScale. 1766 // With opaque pointers the bitcast is no longer present. 1767 Type *VecTy2 = ScalableVectorType::get(IRB.getInt8Ty(), 2); 1768 Value *NullPtrVec2 = Constant::getNullValue(VecTy2->getPointerTo()); 1769 Value *BitCast = IRB.CreateBitCast(NullPtrVec2, VecPtrTy); 1770 Value *GEP2 = IRB.CreateGEP(VecTy, BitCast, IRB.getInt64(1)); 1771 Value *PtrToInt2 = 1772 IRB.CreatePtrToInt(GEP2, DL.getIntPtrType(GEP2->getType())); 1773 EXPECT_TRUE(match(PtrToInt2, m_VScale())); 1774 } 1775 1776 TEST_F(PatternMatchTest, NotForbidUndef) { 1777 Type *ScalarTy = IRB.getInt8Ty(); 1778 Type *VectorTy = FixedVectorType::get(ScalarTy, 3); 1779 Constant *ScalarUndef = UndefValue::get(ScalarTy); 1780 Constant *ScalarOnes = Constant::getAllOnesValue(ScalarTy); 1781 Constant *VectorZero = Constant::getNullValue(VectorTy); 1782 Constant *VectorOnes = Constant::getAllOnesValue(VectorTy); 1783 1784 SmallVector<Constant *, 3> MixedElems; 1785 MixedElems.push_back(ScalarOnes); 1786 MixedElems.push_back(ScalarOnes); 1787 MixedElems.push_back(ScalarUndef); 1788 Constant *VectorMixed = ConstantVector::get(MixedElems); 1789 1790 Value *Not = IRB.CreateXor(VectorZero, VectorOnes); 1791 Value *X; 1792 EXPECT_TRUE(match(Not, m_Not(m_Value()))); 1793 EXPECT_TRUE(match(Not, m_NotForbidUndef(m_Value(X)))); 1794 EXPECT_TRUE(match(X, m_Zero())); 1795 1796 Value *NotCommute = IRB.CreateXor(VectorOnes, VectorZero); 1797 Value *Y; 1798 EXPECT_TRUE(match(NotCommute, m_Not(m_Value()))); 1799 EXPECT_TRUE(match(NotCommute, m_NotForbidUndef(m_Value(Y)))); 1800 EXPECT_TRUE(match(Y, m_Zero())); 1801 1802 Value *NotWithUndefs = IRB.CreateXor(VectorZero, VectorMixed); 1803 EXPECT_TRUE(match(NotWithUndefs, m_Not(m_Value()))); 1804 EXPECT_FALSE(match(NotWithUndefs, m_NotForbidUndef(m_Value()))); 1805 1806 Value *NotWithUndefsCommute = IRB.CreateXor(VectorMixed, VectorZero); 1807 EXPECT_TRUE(match(NotWithUndefsCommute, m_Not(m_Value()))); 1808 EXPECT_FALSE(match(NotWithUndefsCommute, m_NotForbidUndef(m_Value(X)))); 1809 } 1810 1811 template <typename T> struct MutableConstTest : PatternMatchTest { }; 1812 1813 typedef ::testing::Types<std::tuple<Value*, Instruction*>, 1814 std::tuple<const Value*, const Instruction *>> 1815 MutableConstTestTypes; 1816 TYPED_TEST_SUITE(MutableConstTest, MutableConstTestTypes, ); 1817 1818 TYPED_TEST(MutableConstTest, ICmp) { 1819 auto &IRB = PatternMatchTest::IRB; 1820 1821 typedef std::tuple_element_t<0, TypeParam> ValueType; 1822 typedef std::tuple_element_t<1, TypeParam> InstructionType; 1823 1824 Value *L = IRB.getInt32(1); 1825 Value *R = IRB.getInt32(2); 1826 ICmpInst::Predicate Pred = ICmpInst::ICMP_UGT; 1827 1828 ValueType MatchL; 1829 ValueType MatchR; 1830 ICmpInst::Predicate MatchPred; 1831 1832 EXPECT_TRUE(m_ICmp(MatchPred, m_Value(MatchL), m_Value(MatchR)) 1833 .match((InstructionType)IRB.CreateICmp(Pred, L, R))); 1834 EXPECT_EQ(L, MatchL); 1835 EXPECT_EQ(R, MatchR); 1836 } 1837 1838 TEST_F(PatternMatchTest, ConstExpr) { 1839 Constant *G = 1840 M->getOrInsertGlobal("dummy", PointerType::getUnqual(IRB.getInt32Ty())); 1841 Constant *S = ConstantExpr::getPtrToInt(G, IRB.getInt32Ty()); 1842 Type *VecTy = FixedVectorType::get(IRB.getInt32Ty(), 2); 1843 PoisonValue *P = PoisonValue::get(VecTy); 1844 Constant *V = ConstantExpr::getInsertElement(P, S, IRB.getInt32(0)); 1845 1846 // The match succeeds on a constant that is a constant expression itself 1847 // or a constant that contains a constant expression. 1848 EXPECT_TRUE(match(S, m_ConstantExpr())); 1849 EXPECT_TRUE(match(V, m_ConstantExpr())); 1850 } 1851 1852 } // anonymous namespace. 1853