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, BitWise) { 498 Value *Or = IRB.CreateOr(IRB.getInt32(1), IRB.getInt32(0)); 499 Value *Xor = IRB.CreateXor(IRB.getInt32(1), IRB.getInt32(0)); 500 Value *And = IRB.CreateXor(IRB.getInt32(1), IRB.getInt32(0)); 501 Constant *T = IRB.getInt1(true); 502 Constant *F = IRB.getInt1(false); 503 Value *Alloca = IRB.CreateAlloca(IRB.getInt1Ty()); 504 Value *X = IRB.CreateLoad(IRB.getInt1Ty(), Alloca); 505 Value *Y = IRB.CreateLoad(IRB.getInt1Ty(), Alloca); 506 Value *LAnd = IRB.CreateSelect(X, Y, F); 507 Value *LOr = IRB.CreateSelect(X, T, Y); 508 Value *Add = IRB.CreateAdd(IRB.getInt32(1), IRB.getInt32(0)); 509 510 EXPECT_TRUE(m_BitwiseLogic(m_One(), m_Zero()).match(Or)); 511 EXPECT_TRUE(m_BitwiseLogic(m_One(), m_Zero()).match(Xor)); 512 EXPECT_TRUE(m_BitwiseLogic(m_One(), m_Zero()).match(And)); 513 EXPECT_FALSE(m_BitwiseLogic(m_Value(), m_Value()).match(LAnd)); 514 EXPECT_FALSE(m_BitwiseLogic(m_Value(), m_Value()).match(LOr)); 515 EXPECT_FALSE(m_BitwiseLogic(m_Value(), m_Value()).match(Add)); 516 517 EXPECT_FALSE(m_BitwiseLogic(m_Zero(), m_One()).match(Or)); 518 EXPECT_FALSE(m_BitwiseLogic(m_Zero(), m_One()).match(Xor)); 519 EXPECT_FALSE(m_BitwiseLogic(m_Zero(), m_One()).match(And)); 520 521 EXPECT_TRUE(m_c_BitwiseLogic(m_One(), m_Zero()).match(Or)); 522 EXPECT_TRUE(m_c_BitwiseLogic(m_One(), m_Zero()).match(Xor)); 523 EXPECT_TRUE(m_c_BitwiseLogic(m_One(), m_Zero()).match(And)); 524 EXPECT_FALSE(m_c_BitwiseLogic(m_Value(), m_Value()).match(LAnd)); 525 EXPECT_FALSE(m_c_BitwiseLogic(m_Value(), m_Value()).match(LOr)); 526 EXPECT_FALSE(m_c_BitwiseLogic(m_Value(), m_Value()).match(Add)); 527 528 EXPECT_TRUE(m_c_BitwiseLogic(m_Zero(), m_One()).match(Or)); 529 EXPECT_TRUE(m_c_BitwiseLogic(m_Zero(), m_One()).match(Xor)); 530 EXPECT_TRUE(m_c_BitwiseLogic(m_Zero(), m_One()).match(And)); 531 532 EXPECT_FALSE(m_c_BitwiseLogic(m_One(), m_One()).match(Or)); 533 EXPECT_FALSE(m_c_BitwiseLogic(m_Zero(), m_Zero()).match(Xor)); 534 } 535 536 TEST_F(PatternMatchTest, ZExtSExtSelf) { 537 LLVMContext &Ctx = IRB.getContext(); 538 539 Value *One32 = IRB.getInt32(1); 540 Value *One64Z = IRB.CreateZExt(One32, IntegerType::getInt64Ty(Ctx)); 541 Value *One64S = IRB.CreateSExt(One32, IntegerType::getInt64Ty(Ctx)); 542 543 EXPECT_TRUE(m_One().match(One32)); 544 EXPECT_FALSE(m_One().match(One64Z)); 545 EXPECT_FALSE(m_One().match(One64S)); 546 547 EXPECT_FALSE(m_ZExt(m_One()).match(One32)); 548 EXPECT_TRUE(m_ZExt(m_One()).match(One64Z)); 549 EXPECT_FALSE(m_ZExt(m_One()).match(One64S)); 550 551 EXPECT_FALSE(m_SExt(m_One()).match(One32)); 552 EXPECT_FALSE(m_SExt(m_One()).match(One64Z)); 553 EXPECT_TRUE(m_SExt(m_One()).match(One64S)); 554 555 EXPECT_TRUE(m_ZExtOrSelf(m_One()).match(One32)); 556 EXPECT_TRUE(m_ZExtOrSelf(m_One()).match(One64Z)); 557 EXPECT_FALSE(m_ZExtOrSelf(m_One()).match(One64S)); 558 559 EXPECT_TRUE(m_SExtOrSelf(m_One()).match(One32)); 560 EXPECT_FALSE(m_SExtOrSelf(m_One()).match(One64Z)); 561 EXPECT_TRUE(m_SExtOrSelf(m_One()).match(One64S)); 562 563 EXPECT_FALSE(m_ZExtOrSExt(m_One()).match(One32)); 564 EXPECT_TRUE(m_ZExtOrSExt(m_One()).match(One64Z)); 565 EXPECT_TRUE(m_ZExtOrSExt(m_One()).match(One64S)); 566 567 EXPECT_TRUE(m_ZExtOrSExtOrSelf(m_One()).match(One32)); 568 EXPECT_TRUE(m_ZExtOrSExtOrSelf(m_One()).match(One64Z)); 569 EXPECT_TRUE(m_ZExtOrSExtOrSelf(m_One()).match(One64S)); 570 } 571 572 TEST_F(PatternMatchTest, BitCast) { 573 Value *OneDouble = ConstantFP::get(IRB.getDoubleTy(), APFloat(1.0)); 574 Value *ScalableDouble = ConstantFP::get( 575 VectorType::get(IRB.getDoubleTy(), 2, /*Scalable=*/true), APFloat(1.0)); 576 // scalar -> scalar 577 Value *DoubleToI64 = IRB.CreateBitCast(OneDouble, IRB.getInt64Ty()); 578 // scalar -> vector 579 Value *DoubleToV2I32 = IRB.CreateBitCast( 580 OneDouble, VectorType::get(IRB.getInt32Ty(), 2, /*Scalable=*/false)); 581 // vector -> scalar 582 Value *V2I32ToDouble = IRB.CreateBitCast(DoubleToV2I32, IRB.getDoubleTy()); 583 // vector -> vector (same count) 584 Value *V2I32ToV2Float = IRB.CreateBitCast( 585 DoubleToV2I32, VectorType::get(IRB.getFloatTy(), 2, /*Scalable=*/false)); 586 // vector -> vector (different count) 587 Value *V2I32TOV4I16 = IRB.CreateBitCast( 588 DoubleToV2I32, VectorType::get(IRB.getInt16Ty(), 4, /*Scalable=*/false)); 589 // scalable vector -> scalable vector (same count) 590 Value *NXV2DoubleToNXV2I64 = IRB.CreateBitCast( 591 ScalableDouble, VectorType::get(IRB.getInt64Ty(), 2, /*Scalable=*/true)); 592 // scalable vector -> scalable vector (different count) 593 Value *NXV2I64ToNXV4I32 = IRB.CreateBitCast( 594 NXV2DoubleToNXV2I64, 595 VectorType::get(IRB.getInt32Ty(), 4, /*Scalable=*/true)); 596 597 EXPECT_TRUE(m_BitCast(m_Value()).match(DoubleToI64)); 598 EXPECT_TRUE(m_BitCast(m_Value()).match(DoubleToV2I32)); 599 EXPECT_TRUE(m_BitCast(m_Value()).match(V2I32ToDouble)); 600 EXPECT_TRUE(m_BitCast(m_Value()).match(V2I32ToV2Float)); 601 EXPECT_TRUE(m_BitCast(m_Value()).match(V2I32TOV4I16)); 602 EXPECT_TRUE(m_BitCast(m_Value()).match(NXV2DoubleToNXV2I64)); 603 EXPECT_TRUE(m_BitCast(m_Value()).match(NXV2I64ToNXV4I32)); 604 605 EXPECT_TRUE(m_ElementWiseBitCast(m_Value()).match(DoubleToI64)); 606 EXPECT_FALSE(m_ElementWiseBitCast(m_Value()).match(DoubleToV2I32)); 607 EXPECT_FALSE(m_ElementWiseBitCast(m_Value()).match(V2I32ToDouble)); 608 EXPECT_TRUE(m_ElementWiseBitCast(m_Value()).match(V2I32ToV2Float)); 609 EXPECT_FALSE(m_ElementWiseBitCast(m_Value()).match(V2I32TOV4I16)); 610 EXPECT_TRUE(m_ElementWiseBitCast(m_Value()).match(NXV2DoubleToNXV2I64)); 611 EXPECT_FALSE(m_ElementWiseBitCast(m_Value()).match(NXV2I64ToNXV4I32)); 612 } 613 614 TEST_F(PatternMatchTest, Power2) { 615 Value *C128 = IRB.getInt32(128); 616 Value *CNeg128 = ConstantExpr::getNeg(cast<Constant>(C128)); 617 618 EXPECT_TRUE(m_Power2().match(C128)); 619 EXPECT_FALSE(m_Power2().match(CNeg128)); 620 621 EXPECT_TRUE(m_Power2OrZero().match(C128)); 622 EXPECT_FALSE(m_Power2OrZero().match(CNeg128)); 623 624 EXPECT_FALSE(m_NegatedPower2().match(C128)); 625 EXPECT_TRUE(m_NegatedPower2().match(CNeg128)); 626 627 EXPECT_FALSE(m_NegatedPower2OrZero().match(C128)); 628 EXPECT_TRUE(m_NegatedPower2OrZero().match(CNeg128)); 629 630 Value *CIntMin = IRB.getInt64(APSInt::getSignedMinValue(64).getSExtValue()); 631 Value *CNegIntMin = ConstantExpr::getNeg(cast<Constant>(CIntMin)); 632 633 EXPECT_TRUE(m_Power2().match(CIntMin)); 634 EXPECT_TRUE(m_Power2().match(CNegIntMin)); 635 636 EXPECT_TRUE(m_Power2OrZero().match(CIntMin)); 637 EXPECT_TRUE(m_Power2OrZero().match(CNegIntMin)); 638 639 EXPECT_TRUE(m_NegatedPower2().match(CIntMin)); 640 EXPECT_TRUE(m_NegatedPower2().match(CNegIntMin)); 641 642 EXPECT_TRUE(m_NegatedPower2OrZero().match(CIntMin)); 643 EXPECT_TRUE(m_NegatedPower2OrZero().match(CNegIntMin)); 644 645 Value *CZero = IRB.getInt64(0); 646 647 EXPECT_FALSE(m_Power2().match(CZero)); 648 649 EXPECT_TRUE(m_Power2OrZero().match(CZero)); 650 651 EXPECT_FALSE(m_NegatedPower2().match(CZero)); 652 653 EXPECT_TRUE(m_NegatedPower2OrZero().match(CZero)); 654 } 655 656 TEST_F(PatternMatchTest, Not) { 657 Value *C1 = IRB.getInt32(1); 658 Value *C2 = IRB.getInt32(2); 659 Value *C3 = IRB.getInt32(3); 660 Instruction *Not = BinaryOperator::CreateXor(C1, C2); 661 662 // When `m_Not` does not match the `not` itself, 663 // it should not try to apply the inner matcher. 664 Value *Val = C3; 665 EXPECT_FALSE(m_Not(m_Value(Val)).match(Not)); 666 EXPECT_EQ(Val, C3); 667 Not->deleteValue(); 668 } 669 670 TEST_F(PatternMatchTest, CommutativeDeferredValue) { 671 Value *X = IRB.getInt32(1); 672 Value *Y = IRB.getInt32(2); 673 674 { 675 Value *tX = X; 676 EXPECT_TRUE(match(X, m_Deferred(tX))); 677 EXPECT_FALSE(match(Y, m_Deferred(tX))); 678 } 679 { 680 const Value *tX = X; 681 EXPECT_TRUE(match(X, m_Deferred(tX))); 682 EXPECT_FALSE(match(Y, m_Deferred(tX))); 683 } 684 { 685 Value *const tX = X; 686 EXPECT_TRUE(match(X, m_Deferred(tX))); 687 EXPECT_FALSE(match(Y, m_Deferred(tX))); 688 } 689 { 690 const Value *const tX = X; 691 EXPECT_TRUE(match(X, m_Deferred(tX))); 692 EXPECT_FALSE(match(Y, m_Deferred(tX))); 693 } 694 695 { 696 Value *tX = nullptr; 697 EXPECT_TRUE(match(IRB.CreateAnd(X, X), m_And(m_Value(tX), m_Deferred(tX)))); 698 EXPECT_EQ(tX, X); 699 } 700 { 701 Value *tX = nullptr; 702 EXPECT_FALSE( 703 match(IRB.CreateAnd(X, Y), m_c_And(m_Value(tX), m_Deferred(tX)))); 704 } 705 706 auto checkMatch = [X, Y](Value *Pattern) { 707 Value *tX = nullptr, *tY = nullptr; 708 EXPECT_TRUE(match( 709 Pattern, m_c_And(m_Value(tX), m_c_And(m_Deferred(tX), m_Value(tY))))); 710 EXPECT_EQ(tX, X); 711 EXPECT_EQ(tY, Y); 712 }; 713 714 checkMatch(IRB.CreateAnd(X, IRB.CreateAnd(X, Y))); 715 checkMatch(IRB.CreateAnd(X, IRB.CreateAnd(Y, X))); 716 checkMatch(IRB.CreateAnd(IRB.CreateAnd(X, Y), X)); 717 checkMatch(IRB.CreateAnd(IRB.CreateAnd(Y, X), X)); 718 } 719 720 TEST_F(PatternMatchTest, FloatingPointOrderedMin) { 721 Type *FltTy = IRB.getFloatTy(); 722 Value *L = ConstantFP::get(FltTy, 1.0); 723 Value *R = ConstantFP::get(FltTy, 2.0); 724 Value *MatchL, *MatchR; 725 726 // Test OLT. 727 EXPECT_TRUE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 728 .match(IRB.CreateSelect(IRB.CreateFCmpOLT(L, R), L, R))); 729 EXPECT_EQ(L, MatchL); 730 EXPECT_EQ(R, MatchR); 731 732 // Test OLE. 733 EXPECT_TRUE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 734 .match(IRB.CreateSelect(IRB.CreateFCmpOLE(L, R), L, R))); 735 EXPECT_EQ(L, MatchL); 736 EXPECT_EQ(R, MatchR); 737 738 // Test no match on OGE. 739 EXPECT_FALSE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 740 .match(IRB.CreateSelect(IRB.CreateFCmpOGE(L, R), L, R))); 741 742 // Test no match on OGT. 743 EXPECT_FALSE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 744 .match(IRB.CreateSelect(IRB.CreateFCmpOGT(L, R), L, R))); 745 746 // Test inverted selects. Note, that this "inverts" the ordering, e.g.: 747 // %cmp = fcmp oge L, R 748 // %min = select %cmp R, L 749 // Given L == NaN 750 // the above is expanded to %cmp == false ==> %min = L 751 // which is true for UnordFMin, not OrdFMin, so test that: 752 753 // [OU]GE with inverted select. 754 EXPECT_FALSE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 755 .match(IRB.CreateSelect(IRB.CreateFCmpOGE(L, R), R, L))); 756 EXPECT_TRUE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 757 .match(IRB.CreateSelect(IRB.CreateFCmpUGE(L, R), R, L))); 758 EXPECT_EQ(L, MatchL); 759 EXPECT_EQ(R, MatchR); 760 761 // [OU]GT with inverted select. 762 EXPECT_FALSE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 763 .match(IRB.CreateSelect(IRB.CreateFCmpOGT(L, R), R, L))); 764 EXPECT_TRUE(m_OrdFMin(m_Value(MatchL), m_Value(MatchR)) 765 .match(IRB.CreateSelect(IRB.CreateFCmpUGT(L, R), R, L))); 766 EXPECT_EQ(L, MatchL); 767 EXPECT_EQ(R, MatchR); 768 } 769 770 TEST_F(PatternMatchTest, FloatingPointOrderedMax) { 771 Type *FltTy = IRB.getFloatTy(); 772 Value *L = ConstantFP::get(FltTy, 1.0); 773 Value *R = ConstantFP::get(FltTy, 2.0); 774 Value *MatchL, *MatchR; 775 776 // Test OGT. 777 EXPECT_TRUE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 778 .match(IRB.CreateSelect(IRB.CreateFCmpOGT(L, R), L, R))); 779 EXPECT_EQ(L, MatchL); 780 EXPECT_EQ(R, MatchR); 781 782 // Test OGE. 783 EXPECT_TRUE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 784 .match(IRB.CreateSelect(IRB.CreateFCmpOGE(L, R), L, R))); 785 EXPECT_EQ(L, MatchL); 786 EXPECT_EQ(R, MatchR); 787 788 // Test no match on OLE. 789 EXPECT_FALSE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 790 .match(IRB.CreateSelect(IRB.CreateFCmpOLE(L, R), L, R))); 791 792 // Test no match on OLT. 793 EXPECT_FALSE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 794 .match(IRB.CreateSelect(IRB.CreateFCmpOLT(L, R), L, R))); 795 796 797 // Test inverted selects. Note, that this "inverts" the ordering, e.g.: 798 // %cmp = fcmp ole L, R 799 // %max = select %cmp, R, L 800 // Given L == NaN, 801 // the above is expanded to %cmp == false ==> %max == L 802 // which is true for UnordFMax, not OrdFMax, so test that: 803 804 // [OU]LE with inverted select. 805 EXPECT_FALSE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 806 .match(IRB.CreateSelect(IRB.CreateFCmpOLE(L, R), R, L))); 807 EXPECT_TRUE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 808 .match(IRB.CreateSelect(IRB.CreateFCmpULE(L, R), R, L))); 809 EXPECT_EQ(L, MatchL); 810 EXPECT_EQ(R, MatchR); 811 812 // [OUT]LT with inverted select. 813 EXPECT_FALSE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 814 .match(IRB.CreateSelect(IRB.CreateFCmpOLT(L, R), R, L))); 815 EXPECT_TRUE(m_OrdFMax(m_Value(MatchL), m_Value(MatchR)) 816 .match(IRB.CreateSelect(IRB.CreateFCmpULT(L, R), R, L))); 817 EXPECT_EQ(L, MatchL); 818 EXPECT_EQ(R, MatchR); 819 } 820 821 TEST_F(PatternMatchTest, FloatingPointUnorderedMin) { 822 Type *FltTy = IRB.getFloatTy(); 823 Value *L = ConstantFP::get(FltTy, 1.0); 824 Value *R = ConstantFP::get(FltTy, 2.0); 825 Value *MatchL, *MatchR; 826 827 // Test ULT. 828 EXPECT_TRUE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 829 .match(IRB.CreateSelect(IRB.CreateFCmpULT(L, R), L, R))); 830 EXPECT_EQ(L, MatchL); 831 EXPECT_EQ(R, MatchR); 832 833 // Test ULE. 834 EXPECT_TRUE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 835 .match(IRB.CreateSelect(IRB.CreateFCmpULE(L, R), L, R))); 836 EXPECT_EQ(L, MatchL); 837 EXPECT_EQ(R, MatchR); 838 839 // Test no match on UGE. 840 EXPECT_FALSE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 841 .match(IRB.CreateSelect(IRB.CreateFCmpUGE(L, R), L, R))); 842 843 // Test no match on UGT. 844 EXPECT_FALSE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 845 .match(IRB.CreateSelect(IRB.CreateFCmpUGT(L, R), L, R))); 846 847 // Test inverted selects. Note, that this "inverts" the ordering, e.g.: 848 // %cmp = fcmp uge L, R 849 // %min = select %cmp R, L 850 // Given L == NaN 851 // the above is expanded to %cmp == true ==> %min = R 852 // which is true for OrdFMin, not UnordFMin, so test that: 853 854 // [UO]GE with inverted select. 855 EXPECT_FALSE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 856 .match(IRB.CreateSelect(IRB.CreateFCmpUGE(L, R), R, L))); 857 EXPECT_TRUE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 858 .match(IRB.CreateSelect(IRB.CreateFCmpOGE(L, R), R, L))); 859 EXPECT_EQ(L, MatchL); 860 EXPECT_EQ(R, MatchR); 861 862 // [UO]GT with inverted select. 863 EXPECT_FALSE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 864 .match(IRB.CreateSelect(IRB.CreateFCmpUGT(L, R), R, L))); 865 EXPECT_TRUE(m_UnordFMin(m_Value(MatchL), m_Value(MatchR)) 866 .match(IRB.CreateSelect(IRB.CreateFCmpOGT(L, R), R, L))); 867 EXPECT_EQ(L, MatchL); 868 EXPECT_EQ(R, MatchR); 869 } 870 871 TEST_F(PatternMatchTest, FloatingPointUnorderedMax) { 872 Type *FltTy = IRB.getFloatTy(); 873 Value *L = ConstantFP::get(FltTy, 1.0); 874 Value *R = ConstantFP::get(FltTy, 2.0); 875 Value *MatchL, *MatchR; 876 877 // Test UGT. 878 EXPECT_TRUE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 879 .match(IRB.CreateSelect(IRB.CreateFCmpUGT(L, R), L, R))); 880 EXPECT_EQ(L, MatchL); 881 EXPECT_EQ(R, MatchR); 882 883 // Test UGE. 884 EXPECT_TRUE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 885 .match(IRB.CreateSelect(IRB.CreateFCmpUGE(L, R), L, R))); 886 EXPECT_EQ(L, MatchL); 887 EXPECT_EQ(R, MatchR); 888 889 // Test no match on ULE. 890 EXPECT_FALSE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 891 .match(IRB.CreateSelect(IRB.CreateFCmpULE(L, R), L, R))); 892 893 // Test no match on ULT. 894 EXPECT_FALSE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 895 .match(IRB.CreateSelect(IRB.CreateFCmpULT(L, R), L, R))); 896 897 // Test inverted selects. Note, that this "inverts" the ordering, e.g.: 898 // %cmp = fcmp ule L, R 899 // %max = select %cmp R, L 900 // Given L == NaN 901 // the above is expanded to %cmp == true ==> %max = R 902 // which is true for OrdFMax, not UnordFMax, so test that: 903 904 // [UO]LE with inverted select. 905 EXPECT_FALSE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 906 .match(IRB.CreateSelect(IRB.CreateFCmpULE(L, R), R, L))); 907 EXPECT_TRUE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 908 .match(IRB.CreateSelect(IRB.CreateFCmpOLE(L, R), R, L))); 909 EXPECT_EQ(L, MatchL); 910 EXPECT_EQ(R, MatchR); 911 912 // [UO]LT with inverted select. 913 EXPECT_FALSE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 914 .match(IRB.CreateSelect(IRB.CreateFCmpULT(L, R), R, L))); 915 EXPECT_TRUE(m_UnordFMax(m_Value(MatchL), m_Value(MatchR)) 916 .match(IRB.CreateSelect(IRB.CreateFCmpOLT(L, R), R, L))); 917 EXPECT_EQ(L, MatchL); 918 EXPECT_EQ(R, MatchR); 919 } 920 921 TEST_F(PatternMatchTest, OverflowingBinOps) { 922 Value *L = IRB.getInt32(1); 923 Value *R = IRB.getInt32(2); 924 Value *MatchL, *MatchR; 925 926 EXPECT_TRUE( 927 m_NSWAdd(m_Value(MatchL), m_Value(MatchR)).match(IRB.CreateNSWAdd(L, R))); 928 EXPECT_EQ(L, MatchL); 929 EXPECT_EQ(R, MatchR); 930 MatchL = MatchR = nullptr; 931 EXPECT_TRUE( 932 m_NSWSub(m_Value(MatchL), m_Value(MatchR)).match(IRB.CreateNSWSub(L, R))); 933 EXPECT_EQ(L, MatchL); 934 EXPECT_EQ(R, MatchR); 935 MatchL = MatchR = nullptr; 936 EXPECT_TRUE( 937 m_NSWMul(m_Value(MatchL), m_Value(MatchR)).match(IRB.CreateNSWMul(L, R))); 938 EXPECT_EQ(L, MatchL); 939 EXPECT_EQ(R, MatchR); 940 MatchL = MatchR = nullptr; 941 EXPECT_TRUE(m_NSWShl(m_Value(MatchL), m_Value(MatchR)).match( 942 IRB.CreateShl(L, R, "", /* NUW */ false, /* NSW */ true))); 943 EXPECT_EQ(L, MatchL); 944 EXPECT_EQ(R, MatchR); 945 946 EXPECT_TRUE( 947 m_NUWAdd(m_Value(MatchL), m_Value(MatchR)).match(IRB.CreateNUWAdd(L, R))); 948 EXPECT_EQ(L, MatchL); 949 EXPECT_EQ(R, MatchR); 950 MatchL = MatchR = nullptr; 951 EXPECT_TRUE( 952 m_NUWSub(m_Value(MatchL), m_Value(MatchR)).match(IRB.CreateNUWSub(L, R))); 953 EXPECT_EQ(L, MatchL); 954 EXPECT_EQ(R, MatchR); 955 MatchL = MatchR = nullptr; 956 EXPECT_TRUE( 957 m_NUWMul(m_Value(MatchL), m_Value(MatchR)).match(IRB.CreateNUWMul(L, R))); 958 EXPECT_EQ(L, MatchL); 959 EXPECT_EQ(R, MatchR); 960 MatchL = MatchR = nullptr; 961 EXPECT_TRUE(m_NUWShl(m_Value(MatchL), m_Value(MatchR)).match( 962 IRB.CreateShl(L, R, "", /* NUW */ true, /* NSW */ false))); 963 EXPECT_EQ(L, MatchL); 964 EXPECT_EQ(R, MatchR); 965 966 EXPECT_FALSE(m_NSWAdd(m_Value(), m_Value()).match(IRB.CreateAdd(L, R))); 967 EXPECT_FALSE(m_NSWAdd(m_Value(), m_Value()).match(IRB.CreateNUWAdd(L, R))); 968 EXPECT_FALSE(m_NSWAdd(m_Value(), m_Value()).match(IRB.CreateNSWSub(L, R))); 969 EXPECT_FALSE(m_NSWSub(m_Value(), m_Value()).match(IRB.CreateSub(L, R))); 970 EXPECT_FALSE(m_NSWSub(m_Value(), m_Value()).match(IRB.CreateNUWSub(L, R))); 971 EXPECT_FALSE(m_NSWSub(m_Value(), m_Value()).match(IRB.CreateNSWAdd(L, R))); 972 EXPECT_FALSE(m_NSWMul(m_Value(), m_Value()).match(IRB.CreateMul(L, R))); 973 EXPECT_FALSE(m_NSWMul(m_Value(), m_Value()).match(IRB.CreateNUWMul(L, R))); 974 EXPECT_FALSE(m_NSWMul(m_Value(), m_Value()).match(IRB.CreateNSWAdd(L, R))); 975 EXPECT_FALSE(m_NSWShl(m_Value(), m_Value()).match(IRB.CreateShl(L, R))); 976 EXPECT_FALSE(m_NSWShl(m_Value(), m_Value()).match( 977 IRB.CreateShl(L, R, "", /* NUW */ true, /* NSW */ false))); 978 EXPECT_FALSE(m_NSWShl(m_Value(), m_Value()).match(IRB.CreateNSWAdd(L, R))); 979 980 EXPECT_FALSE(m_NUWAdd(m_Value(), m_Value()).match(IRB.CreateAdd(L, R))); 981 EXPECT_FALSE(m_NUWAdd(m_Value(), m_Value()).match(IRB.CreateNSWAdd(L, R))); 982 EXPECT_FALSE(m_NUWAdd(m_Value(), m_Value()).match(IRB.CreateNUWSub(L, R))); 983 EXPECT_FALSE(m_NUWSub(m_Value(), m_Value()).match(IRB.CreateSub(L, R))); 984 EXPECT_FALSE(m_NUWSub(m_Value(), m_Value()).match(IRB.CreateNSWSub(L, R))); 985 EXPECT_FALSE(m_NUWSub(m_Value(), m_Value()).match(IRB.CreateNUWAdd(L, R))); 986 EXPECT_FALSE(m_NUWMul(m_Value(), m_Value()).match(IRB.CreateMul(L, R))); 987 EXPECT_FALSE(m_NUWMul(m_Value(), m_Value()).match(IRB.CreateNSWMul(L, R))); 988 EXPECT_FALSE(m_NUWMul(m_Value(), m_Value()).match(IRB.CreateNUWAdd(L, R))); 989 EXPECT_FALSE(m_NUWShl(m_Value(), m_Value()).match(IRB.CreateShl(L, R))); 990 EXPECT_FALSE(m_NUWShl(m_Value(), m_Value()).match( 991 IRB.CreateShl(L, R, "", /* NUW */ false, /* NSW */ true))); 992 EXPECT_FALSE(m_NUWShl(m_Value(), m_Value()).match(IRB.CreateNUWAdd(L, R))); 993 } 994 995 TEST_F(PatternMatchTest, LoadStoreOps) { 996 // Create this load/store sequence: 997 // 998 // %p = alloca i32* 999 // %0 = load i32*, i32** %p 1000 // store i32 42, i32* %0 1001 1002 Value *Alloca = IRB.CreateAlloca(IRB.getInt32Ty()); 1003 Value *LoadInst = IRB.CreateLoad(IRB.getInt32Ty(), Alloca); 1004 Value *FourtyTwo = IRB.getInt32(42); 1005 Value *StoreInst = IRB.CreateStore(FourtyTwo, Alloca); 1006 Value *MatchLoad, *MatchStoreVal, *MatchStorePointer; 1007 1008 EXPECT_TRUE(m_Load(m_Value(MatchLoad)).match(LoadInst)); 1009 EXPECT_EQ(Alloca, MatchLoad); 1010 1011 EXPECT_TRUE(m_Load(m_Specific(Alloca)).match(LoadInst)); 1012 1013 EXPECT_FALSE(m_Load(m_Value(MatchLoad)).match(Alloca)); 1014 1015 EXPECT_TRUE(m_Store(m_Value(MatchStoreVal), m_Value(MatchStorePointer)) 1016 .match(StoreInst)); 1017 EXPECT_EQ(FourtyTwo, MatchStoreVal); 1018 EXPECT_EQ(Alloca, MatchStorePointer); 1019 1020 EXPECT_FALSE(m_Store(m_Value(MatchStoreVal), m_Value(MatchStorePointer)) 1021 .match(Alloca)); 1022 1023 EXPECT_TRUE(m_Store(m_SpecificInt(42), m_Specific(Alloca)) 1024 .match(StoreInst)); 1025 EXPECT_FALSE(m_Store(m_SpecificInt(42), m_Specific(FourtyTwo)) 1026 .match(StoreInst)); 1027 EXPECT_FALSE(m_Store(m_SpecificInt(43), m_Specific(Alloca)) 1028 .match(StoreInst)); 1029 } 1030 1031 TEST_F(PatternMatchTest, VectorOps) { 1032 // Build up small tree of vector operations 1033 // 1034 // Val = 0 + 1 1035 // Val2 = Val + 3 1036 // VI1 = insertelement <2 x i8> undef, i8 1, i32 0 = <1, undef> 1037 // VI2 = insertelement <2 x i8> %VI1, i8 %Val2, i8 %Val = <1, 4> 1038 // VI3 = insertelement <2 x i8> %VI1, i8 %Val2, i32 1 = <1, 4> 1039 // VI4 = insertelement <2 x i8> %VI1, i8 2, i8 %Val = <1, 2> 1040 // 1041 // SI1 = shufflevector <2 x i8> %VI1, <2 x i8> undef, zeroinitializer 1042 // SI2 = shufflevector <2 x i8> %VI3, <2 x i8> %VI4, <2 x i8> <i8 0, i8 2> 1043 // SI3 = shufflevector <2 x i8> %VI3, <2 x i8> undef, zeroinitializer 1044 // SI4 = shufflevector <2 x i8> %VI4, <2 x i8> undef, zeroinitializer 1045 // 1046 // SP1 = VectorSplat(2, i8 2) 1047 // SP2 = VectorSplat(2, i8 %Val) 1048 Type *VecTy = FixedVectorType::get(IRB.getInt8Ty(), 2); 1049 Type *i32 = IRB.getInt32Ty(); 1050 Type *i32VecTy = FixedVectorType::get(i32, 2); 1051 1052 Value *Val = IRB.CreateAdd(IRB.getInt8(0), IRB.getInt8(1)); 1053 Value *Val2 = IRB.CreateAdd(Val, IRB.getInt8(3)); 1054 1055 SmallVector<Constant *, 2> VecElemIdxs; 1056 VecElemIdxs.push_back(ConstantInt::get(i32, 0)); 1057 VecElemIdxs.push_back(ConstantInt::get(i32, 2)); 1058 auto *IdxVec = ConstantVector::get(VecElemIdxs); 1059 1060 Value *VI1 = IRB.CreateInsertElement(VecTy, IRB.getInt8(1), (uint64_t)0); 1061 Value *VI2 = IRB.CreateInsertElement(VI1, Val2, Val); 1062 Value *VI3 = IRB.CreateInsertElement(VI1, Val2, (uint64_t)1); 1063 Value *VI4 = IRB.CreateInsertElement(VI1, IRB.getInt8(2), Val); 1064 1065 Value *EX1 = IRB.CreateExtractElement(VI4, Val); 1066 Value *EX2 = IRB.CreateExtractElement(VI4, (uint64_t)0); 1067 Value *EX3 = IRB.CreateExtractElement(IdxVec, (uint64_t)1); 1068 1069 Constant *Zero = ConstantAggregateZero::get(i32VecTy); 1070 SmallVector<int, 16> ZeroMask; 1071 ShuffleVectorInst::getShuffleMask(Zero, ZeroMask); 1072 1073 Value *SI1 = IRB.CreateShuffleVector(VI1, ZeroMask); 1074 Value *SI2 = IRB.CreateShuffleVector(VI3, VI4, IdxVec); 1075 Value *SI3 = IRB.CreateShuffleVector(VI3, ZeroMask); 1076 Value *SI4 = IRB.CreateShuffleVector(VI4, ZeroMask); 1077 1078 Value *SP1 = IRB.CreateVectorSplat(2, IRB.getInt8(2)); 1079 Value *SP2 = IRB.CreateVectorSplat(2, Val); 1080 1081 Value *A = nullptr, *B = nullptr, *C = nullptr; 1082 1083 // Test matching insertelement 1084 EXPECT_TRUE(match(VI1, m_InsertElt(m_Value(), m_Value(), m_Value()))); 1085 EXPECT_TRUE( 1086 match(VI1, m_InsertElt(m_Undef(), m_ConstantInt(), m_ConstantInt()))); 1087 EXPECT_TRUE( 1088 match(VI1, m_InsertElt(m_Undef(), m_ConstantInt(), m_Zero()))); 1089 EXPECT_TRUE( 1090 match(VI1, m_InsertElt(m_Undef(), m_SpecificInt(1), m_Zero()))); 1091 EXPECT_TRUE(match(VI2, m_InsertElt(m_Value(), m_Value(), m_Value()))); 1092 EXPECT_FALSE( 1093 match(VI2, m_InsertElt(m_Value(), m_Value(), m_ConstantInt()))); 1094 EXPECT_FALSE( 1095 match(VI2, m_InsertElt(m_Value(), m_ConstantInt(), m_Value()))); 1096 EXPECT_FALSE(match(VI2, m_InsertElt(m_Constant(), m_Value(), m_Value()))); 1097 EXPECT_TRUE(match(VI3, m_InsertElt(m_Value(A), m_Value(B), m_Value(C)))); 1098 EXPECT_TRUE(A == VI1); 1099 EXPECT_TRUE(B == Val2); 1100 EXPECT_TRUE(isa<ConstantInt>(C)); 1101 A = B = C = nullptr; // reset 1102 1103 // Test matching extractelement 1104 EXPECT_TRUE(match(EX1, m_ExtractElt(m_Value(A), m_Value(B)))); 1105 EXPECT_TRUE(A == VI4); 1106 EXPECT_TRUE(B == Val); 1107 A = B = C = nullptr; // reset 1108 EXPECT_FALSE(match(EX1, m_ExtractElt(m_Value(), m_ConstantInt()))); 1109 EXPECT_TRUE(match(EX2, m_ExtractElt(m_Value(), m_ConstantInt()))); 1110 EXPECT_TRUE(match(EX3, m_ExtractElt(m_Constant(), m_ConstantInt()))); 1111 1112 // Test matching shufflevector 1113 ArrayRef<int> Mask; 1114 EXPECT_TRUE(match(SI1, m_Shuffle(m_Value(), m_Undef(), m_ZeroMask()))); 1115 EXPECT_TRUE(match(SI2, m_Shuffle(m_Value(A), m_Value(B), m_Mask(Mask)))); 1116 EXPECT_TRUE(A == VI3); 1117 EXPECT_TRUE(B == VI4); 1118 A = B = C = nullptr; // reset 1119 1120 // Test matching the vector splat pattern 1121 EXPECT_TRUE(match( 1122 SI1, 1123 m_Shuffle(m_InsertElt(m_Undef(), m_SpecificInt(1), m_Zero()), 1124 m_Undef(), m_ZeroMask()))); 1125 EXPECT_FALSE(match( 1126 SI3, m_Shuffle(m_InsertElt(m_Undef(), m_Value(), m_Zero()), 1127 m_Undef(), m_ZeroMask()))); 1128 EXPECT_FALSE(match( 1129 SI4, m_Shuffle(m_InsertElt(m_Undef(), m_Value(), m_Zero()), 1130 m_Undef(), m_ZeroMask()))); 1131 EXPECT_TRUE(match( 1132 SP1, 1133 m_Shuffle(m_InsertElt(m_Undef(), m_SpecificInt(2), m_Zero()), 1134 m_Undef(), m_ZeroMask()))); 1135 EXPECT_TRUE(match( 1136 SP2, m_Shuffle(m_InsertElt(m_Undef(), m_Value(A), m_Zero()), 1137 m_Undef(), m_ZeroMask()))); 1138 EXPECT_TRUE(A == Val); 1139 } 1140 1141 TEST_F(PatternMatchTest, UndefPoisonMix) { 1142 Type *ScalarTy = IRB.getInt8Ty(); 1143 ArrayType *ArrTy = ArrayType::get(ScalarTy, 2); 1144 StructType *StTy = StructType::get(ScalarTy, ScalarTy); 1145 StructType *StTy2 = StructType::get(ScalarTy, StTy); 1146 StructType *StTy3 = StructType::get(StTy, ScalarTy); 1147 Constant *Zero = ConstantInt::getNullValue(ScalarTy); 1148 UndefValue *U = UndefValue::get(ScalarTy); 1149 UndefValue *P = PoisonValue::get(ScalarTy); 1150 1151 EXPECT_TRUE(match(ConstantVector::get({U, P}), m_Undef())); 1152 EXPECT_TRUE(match(ConstantVector::get({P, U}), m_Undef())); 1153 1154 EXPECT_TRUE(match(ConstantArray::get(ArrTy, {U, P}), m_Undef())); 1155 EXPECT_TRUE(match(ConstantArray::get(ArrTy, {P, U}), m_Undef())); 1156 1157 auto *UP = ConstantStruct::get(StTy, {U, P}); 1158 EXPECT_TRUE(match(ConstantStruct::get(StTy2, {U, UP}), m_Undef())); 1159 EXPECT_TRUE(match(ConstantStruct::get(StTy2, {P, UP}), m_Undef())); 1160 EXPECT_TRUE(match(ConstantStruct::get(StTy3, {UP, U}), m_Undef())); 1161 EXPECT_TRUE(match(ConstantStruct::get(StTy3, {UP, P}), m_Undef())); 1162 1163 EXPECT_FALSE(match(ConstantStruct::get(StTy, {U, Zero}), m_Undef())); 1164 EXPECT_FALSE(match(ConstantStruct::get(StTy, {Zero, U}), m_Undef())); 1165 EXPECT_FALSE(match(ConstantStruct::get(StTy, {P, Zero}), m_Undef())); 1166 EXPECT_FALSE(match(ConstantStruct::get(StTy, {Zero, P}), m_Undef())); 1167 1168 EXPECT_FALSE(match(ConstantStruct::get(StTy2, {Zero, UP}), m_Undef())); 1169 EXPECT_FALSE(match(ConstantStruct::get(StTy3, {UP, Zero}), m_Undef())); 1170 } 1171 1172 TEST_F(PatternMatchTest, VectorUndefInt) { 1173 Type *ScalarTy = IRB.getInt8Ty(); 1174 Type *VectorTy = FixedVectorType::get(ScalarTy, 4); 1175 Constant *ScalarUndef = UndefValue::get(ScalarTy); 1176 Constant *VectorUndef = UndefValue::get(VectorTy); 1177 Constant *ScalarZero = Constant::getNullValue(ScalarTy); 1178 Constant *VectorZero = Constant::getNullValue(VectorTy); 1179 1180 SmallVector<Constant *, 4> Elems; 1181 Elems.push_back(ScalarUndef); 1182 Elems.push_back(ScalarZero); 1183 Elems.push_back(ScalarUndef); 1184 Elems.push_back(ScalarZero); 1185 Constant *VectorZeroUndef = ConstantVector::get(Elems); 1186 1187 EXPECT_TRUE(match(ScalarUndef, m_Undef())); 1188 EXPECT_TRUE(match(VectorUndef, m_Undef())); 1189 EXPECT_FALSE(match(ScalarZero, m_Undef())); 1190 EXPECT_FALSE(match(VectorZero, m_Undef())); 1191 EXPECT_FALSE(match(VectorZeroUndef, m_Undef())); 1192 1193 EXPECT_FALSE(match(ScalarUndef, m_Zero())); 1194 EXPECT_FALSE(match(VectorUndef, m_Zero())); 1195 EXPECT_TRUE(match(ScalarZero, m_Zero())); 1196 EXPECT_TRUE(match(VectorZero, m_Zero())); 1197 EXPECT_TRUE(match(VectorZeroUndef, m_Zero())); 1198 1199 const APInt *C; 1200 // Regardless of whether undefs are allowed, 1201 // a fully undef constant does not match. 1202 EXPECT_FALSE(match(ScalarUndef, m_APInt(C))); 1203 EXPECT_FALSE(match(ScalarUndef, m_APIntForbidUndef(C))); 1204 EXPECT_FALSE(match(ScalarUndef, m_APIntAllowUndef(C))); 1205 EXPECT_FALSE(match(VectorUndef, m_APInt(C))); 1206 EXPECT_FALSE(match(VectorUndef, m_APIntForbidUndef(C))); 1207 EXPECT_FALSE(match(VectorUndef, m_APIntAllowUndef(C))); 1208 1209 // We can always match simple constants and simple splats. 1210 C = nullptr; 1211 EXPECT_TRUE(match(ScalarZero, m_APInt(C))); 1212 EXPECT_TRUE(C->isZero()); 1213 C = nullptr; 1214 EXPECT_TRUE(match(ScalarZero, m_APIntForbidUndef(C))); 1215 EXPECT_TRUE(C->isZero()); 1216 C = nullptr; 1217 EXPECT_TRUE(match(ScalarZero, m_APIntAllowUndef(C))); 1218 EXPECT_TRUE(C->isZero()); 1219 C = nullptr; 1220 EXPECT_TRUE(match(VectorZero, m_APInt(C))); 1221 EXPECT_TRUE(C->isZero()); 1222 C = nullptr; 1223 EXPECT_TRUE(match(VectorZero, m_APIntForbidUndef(C))); 1224 EXPECT_TRUE(C->isZero()); 1225 C = nullptr; 1226 EXPECT_TRUE(match(VectorZero, m_APIntAllowUndef(C))); 1227 EXPECT_TRUE(C->isZero()); 1228 1229 // Whether splats with undef can be matched depends on the matcher. 1230 EXPECT_FALSE(match(VectorZeroUndef, m_APInt(C))); 1231 EXPECT_FALSE(match(VectorZeroUndef, m_APIntForbidUndef(C))); 1232 C = nullptr; 1233 EXPECT_TRUE(match(VectorZeroUndef, m_APIntAllowUndef(C))); 1234 EXPECT_TRUE(C->isZero()); 1235 } 1236 1237 TEST_F(PatternMatchTest, VectorUndefFloat) { 1238 Type *ScalarTy = IRB.getFloatTy(); 1239 Type *VectorTy = FixedVectorType::get(ScalarTy, 4); 1240 Constant *ScalarUndef = UndefValue::get(ScalarTy); 1241 Constant *VectorUndef = UndefValue::get(VectorTy); 1242 Constant *ScalarZero = Constant::getNullValue(ScalarTy); 1243 Constant *VectorZero = Constant::getNullValue(VectorTy); 1244 Constant *ScalarPosInf = ConstantFP::getInfinity(ScalarTy, false); 1245 Constant *ScalarNegInf = ConstantFP::getInfinity(ScalarTy, true); 1246 Constant *ScalarNaN = ConstantFP::getNaN(ScalarTy, true); 1247 1248 Constant *VectorZeroUndef = 1249 ConstantVector::get({ScalarUndef, ScalarZero, ScalarUndef, ScalarZero}); 1250 1251 Constant *VectorInfUndef = ConstantVector::get( 1252 {ScalarPosInf, ScalarNegInf, ScalarUndef, ScalarPosInf}); 1253 1254 Constant *VectorNaNUndef = 1255 ConstantVector::get({ScalarUndef, ScalarNaN, ScalarNaN, ScalarNaN}); 1256 1257 EXPECT_TRUE(match(ScalarUndef, m_Undef())); 1258 EXPECT_TRUE(match(VectorUndef, m_Undef())); 1259 EXPECT_FALSE(match(ScalarZero, m_Undef())); 1260 EXPECT_FALSE(match(VectorZero, m_Undef())); 1261 EXPECT_FALSE(match(VectorZeroUndef, m_Undef())); 1262 EXPECT_FALSE(match(VectorInfUndef, m_Undef())); 1263 EXPECT_FALSE(match(VectorNaNUndef, m_Undef())); 1264 1265 EXPECT_FALSE(match(ScalarUndef, m_AnyZeroFP())); 1266 EXPECT_FALSE(match(VectorUndef, m_AnyZeroFP())); 1267 EXPECT_TRUE(match(ScalarZero, m_AnyZeroFP())); 1268 EXPECT_TRUE(match(VectorZero, m_AnyZeroFP())); 1269 EXPECT_TRUE(match(VectorZeroUndef, m_AnyZeroFP())); 1270 EXPECT_FALSE(match(VectorInfUndef, m_AnyZeroFP())); 1271 EXPECT_FALSE(match(VectorNaNUndef, m_AnyZeroFP())); 1272 1273 EXPECT_FALSE(match(ScalarUndef, m_NaN())); 1274 EXPECT_FALSE(match(VectorUndef, m_NaN())); 1275 EXPECT_FALSE(match(VectorZeroUndef, m_NaN())); 1276 EXPECT_FALSE(match(ScalarPosInf, m_NaN())); 1277 EXPECT_FALSE(match(ScalarNegInf, m_NaN())); 1278 EXPECT_TRUE(match(ScalarNaN, m_NaN())); 1279 EXPECT_FALSE(match(VectorInfUndef, m_NaN())); 1280 EXPECT_TRUE(match(VectorNaNUndef, m_NaN())); 1281 1282 EXPECT_FALSE(match(ScalarUndef, m_NonNaN())); 1283 EXPECT_FALSE(match(VectorUndef, m_NonNaN())); 1284 EXPECT_TRUE(match(VectorZeroUndef, m_NonNaN())); 1285 EXPECT_TRUE(match(ScalarPosInf, m_NonNaN())); 1286 EXPECT_TRUE(match(ScalarNegInf, m_NonNaN())); 1287 EXPECT_FALSE(match(ScalarNaN, m_NonNaN())); 1288 EXPECT_TRUE(match(VectorInfUndef, m_NonNaN())); 1289 EXPECT_FALSE(match(VectorNaNUndef, m_NonNaN())); 1290 1291 EXPECT_FALSE(match(ScalarUndef, m_Inf())); 1292 EXPECT_FALSE(match(VectorUndef, m_Inf())); 1293 EXPECT_FALSE(match(VectorZeroUndef, m_Inf())); 1294 EXPECT_TRUE(match(ScalarPosInf, m_Inf())); 1295 EXPECT_TRUE(match(ScalarNegInf, m_Inf())); 1296 EXPECT_FALSE(match(ScalarNaN, m_Inf())); 1297 EXPECT_TRUE(match(VectorInfUndef, m_Inf())); 1298 EXPECT_FALSE(match(VectorNaNUndef, m_Inf())); 1299 1300 EXPECT_FALSE(match(ScalarUndef, m_NonInf())); 1301 EXPECT_FALSE(match(VectorUndef, m_NonInf())); 1302 EXPECT_TRUE(match(VectorZeroUndef, m_NonInf())); 1303 EXPECT_FALSE(match(ScalarPosInf, m_NonInf())); 1304 EXPECT_FALSE(match(ScalarNegInf, m_NonInf())); 1305 EXPECT_TRUE(match(ScalarNaN, m_NonInf())); 1306 EXPECT_FALSE(match(VectorInfUndef, m_NonInf())); 1307 EXPECT_TRUE(match(VectorNaNUndef, m_NonInf())); 1308 1309 EXPECT_FALSE(match(ScalarUndef, m_Finite())); 1310 EXPECT_FALSE(match(VectorUndef, m_Finite())); 1311 EXPECT_TRUE(match(VectorZeroUndef, m_Finite())); 1312 EXPECT_FALSE(match(ScalarPosInf, m_Finite())); 1313 EXPECT_FALSE(match(ScalarNegInf, m_Finite())); 1314 EXPECT_FALSE(match(ScalarNaN, m_Finite())); 1315 EXPECT_FALSE(match(VectorInfUndef, m_Finite())); 1316 EXPECT_FALSE(match(VectorNaNUndef, m_Finite())); 1317 1318 const APFloat *C; 1319 // Regardless of whether undefs are allowed, 1320 // a fully undef constant does not match. 1321 EXPECT_FALSE(match(ScalarUndef, m_APFloat(C))); 1322 EXPECT_FALSE(match(ScalarUndef, m_APFloatForbidUndef(C))); 1323 EXPECT_FALSE(match(ScalarUndef, m_APFloatAllowUndef(C))); 1324 EXPECT_FALSE(match(VectorUndef, m_APFloat(C))); 1325 EXPECT_FALSE(match(VectorUndef, m_APFloatForbidUndef(C))); 1326 EXPECT_FALSE(match(VectorUndef, m_APFloatAllowUndef(C))); 1327 1328 // We can always match simple constants and simple splats. 1329 C = nullptr; 1330 EXPECT_TRUE(match(ScalarZero, m_APFloat(C))); 1331 EXPECT_TRUE(C->isZero()); 1332 C = nullptr; 1333 EXPECT_TRUE(match(ScalarZero, m_APFloatForbidUndef(C))); 1334 EXPECT_TRUE(C->isZero()); 1335 C = nullptr; 1336 EXPECT_TRUE(match(ScalarZero, m_APFloatAllowUndef(C))); 1337 EXPECT_TRUE(C->isZero()); 1338 C = nullptr; 1339 EXPECT_TRUE(match(VectorZero, m_APFloat(C))); 1340 EXPECT_TRUE(C->isZero()); 1341 C = nullptr; 1342 EXPECT_TRUE(match(VectorZero, m_APFloatForbidUndef(C))); 1343 EXPECT_TRUE(C->isZero()); 1344 C = nullptr; 1345 EXPECT_TRUE(match(VectorZero, m_APFloatAllowUndef(C))); 1346 EXPECT_TRUE(C->isZero()); 1347 1348 // Whether splats with undef can be matched depends on the matcher. 1349 EXPECT_FALSE(match(VectorZeroUndef, m_APFloat(C))); 1350 EXPECT_FALSE(match(VectorZeroUndef, m_APFloatForbidUndef(C))); 1351 C = nullptr; 1352 EXPECT_TRUE(match(VectorZeroUndef, m_APFloatAllowUndef(C))); 1353 EXPECT_TRUE(C->isZero()); 1354 C = nullptr; 1355 EXPECT_TRUE(match(VectorZeroUndef, m_Finite(C))); 1356 EXPECT_TRUE(C->isZero()); 1357 } 1358 1359 TEST_F(PatternMatchTest, FloatingPointFNeg) { 1360 Type *FltTy = IRB.getFloatTy(); 1361 Value *One = ConstantFP::get(FltTy, 1.0); 1362 Value *Z = ConstantFP::get(FltTy, 0.0); 1363 Value *NZ = ConstantFP::get(FltTy, -0.0); 1364 Value *V = IRB.CreateFNeg(One); 1365 Value *V1 = IRB.CreateFSub(NZ, One); 1366 Value *V2 = IRB.CreateFSub(Z, One); 1367 Value *V3 = IRB.CreateFAdd(NZ, One); 1368 Value *Match; 1369 1370 // Test FNeg(1.0) 1371 EXPECT_TRUE(match(V, m_FNeg(m_Value(Match)))); 1372 EXPECT_EQ(One, Match); 1373 1374 // Test FSub(-0.0, 1.0) 1375 EXPECT_TRUE(match(V1, m_FNeg(m_Value(Match)))); 1376 EXPECT_EQ(One, Match); 1377 1378 // Test FSub(0.0, 1.0) 1379 EXPECT_FALSE(match(V2, m_FNeg(m_Value(Match)))); 1380 cast<Instruction>(V2)->setHasNoSignedZeros(true); 1381 EXPECT_TRUE(match(V2, m_FNeg(m_Value(Match)))); 1382 EXPECT_EQ(One, Match); 1383 1384 // Test FAdd(-0.0, 1.0) 1385 EXPECT_FALSE(match(V3, m_FNeg(m_Value(Match)))); 1386 } 1387 1388 TEST_F(PatternMatchTest, CondBranchTest) { 1389 BasicBlock *TrueBB = BasicBlock::Create(Ctx, "TrueBB", F); 1390 BasicBlock *FalseBB = BasicBlock::Create(Ctx, "FalseBB", F); 1391 Value *Br1 = IRB.CreateCondBr(IRB.getTrue(), TrueBB, FalseBB); 1392 1393 EXPECT_TRUE(match(Br1, m_Br(m_Value(), m_BasicBlock(), m_BasicBlock()))); 1394 1395 BasicBlock *A, *B; 1396 EXPECT_TRUE(match(Br1, m_Br(m_Value(), m_BasicBlock(A), m_BasicBlock(B)))); 1397 EXPECT_EQ(TrueBB, A); 1398 EXPECT_EQ(FalseBB, B); 1399 1400 EXPECT_FALSE( 1401 match(Br1, m_Br(m_Value(), m_SpecificBB(FalseBB), m_BasicBlock()))); 1402 EXPECT_FALSE( 1403 match(Br1, m_Br(m_Value(), m_BasicBlock(), m_SpecificBB(TrueBB)))); 1404 EXPECT_FALSE( 1405 match(Br1, m_Br(m_Value(), m_SpecificBB(FalseBB), m_BasicBlock(TrueBB)))); 1406 EXPECT_TRUE( 1407 match(Br1, m_Br(m_Value(), m_SpecificBB(TrueBB), m_BasicBlock(FalseBB)))); 1408 1409 // Check we can use m_Deferred with branches. 1410 EXPECT_FALSE(match(Br1, m_Br(m_Value(), m_BasicBlock(A), m_Deferred(A)))); 1411 Value *Br2 = IRB.CreateCondBr(IRB.getTrue(), TrueBB, TrueBB); 1412 A = nullptr; 1413 EXPECT_TRUE(match(Br2, m_Br(m_Value(), m_BasicBlock(A), m_Deferred(A)))); 1414 } 1415 1416 TEST_F(PatternMatchTest, WithOverflowInst) { 1417 Value *Add = IRB.CreateBinaryIntrinsic(Intrinsic::uadd_with_overflow, 1418 IRB.getInt32(0), IRB.getInt32(0)); 1419 Value *Add0 = IRB.CreateExtractValue(Add, 0); 1420 Value *Add1 = IRB.CreateExtractValue(Add, 1); 1421 1422 EXPECT_TRUE(match(Add0, m_ExtractValue<0>(m_Value()))); 1423 EXPECT_FALSE(match(Add0, m_ExtractValue<1>(m_Value()))); 1424 EXPECT_FALSE(match(Add1, m_ExtractValue<0>(m_Value()))); 1425 EXPECT_TRUE(match(Add1, m_ExtractValue<1>(m_Value()))); 1426 EXPECT_FALSE(match(Add, m_ExtractValue<1>(m_Value()))); 1427 EXPECT_FALSE(match(Add, m_ExtractValue<1>(m_Value()))); 1428 1429 WithOverflowInst *WOI; 1430 EXPECT_FALSE(match(Add0, m_WithOverflowInst(WOI))); 1431 EXPECT_FALSE(match(Add1, m_WithOverflowInst(WOI))); 1432 EXPECT_TRUE(match(Add, m_WithOverflowInst(WOI))); 1433 1434 EXPECT_TRUE(match(Add0, m_ExtractValue<0>(m_WithOverflowInst(WOI)))); 1435 EXPECT_EQ(Add, WOI); 1436 EXPECT_TRUE(match(Add1, m_ExtractValue<1>(m_WithOverflowInst(WOI)))); 1437 EXPECT_EQ(Add, WOI); 1438 } 1439 1440 TEST_F(PatternMatchTest, MinMaxIntrinsics) { 1441 Type *Ty = IRB.getInt32Ty(); 1442 Value *L = ConstantInt::get(Ty, 1); 1443 Value *R = ConstantInt::get(Ty, 2); 1444 Value *MatchL, *MatchR; 1445 1446 // Check for intrinsic ID match and capture of operands. 1447 EXPECT_TRUE(m_SMax(m_Value(MatchL), m_Value(MatchR)) 1448 .match(IRB.CreateBinaryIntrinsic(Intrinsic::smax, L, R))); 1449 EXPECT_EQ(L, MatchL); 1450 EXPECT_EQ(R, MatchR); 1451 1452 EXPECT_TRUE(m_SMin(m_Value(MatchL), m_Value(MatchR)) 1453 .match(IRB.CreateBinaryIntrinsic(Intrinsic::smin, L, R))); 1454 EXPECT_EQ(L, MatchL); 1455 EXPECT_EQ(R, MatchR); 1456 1457 EXPECT_TRUE(m_UMax(m_Value(MatchL), m_Value(MatchR)) 1458 .match(IRB.CreateBinaryIntrinsic(Intrinsic::umax, L, R))); 1459 EXPECT_EQ(L, MatchL); 1460 EXPECT_EQ(R, MatchR); 1461 1462 EXPECT_TRUE(m_UMin(m_Value(MatchL), m_Value(MatchR)) 1463 .match(IRB.CreateBinaryIntrinsic(Intrinsic::umin, L, R))); 1464 EXPECT_EQ(L, MatchL); 1465 EXPECT_EQ(R, MatchR); 1466 1467 // Check for intrinsic ID mismatch. 1468 EXPECT_FALSE(m_SMax(m_Value(MatchL), m_Value(MatchR)) 1469 .match(IRB.CreateBinaryIntrinsic(Intrinsic::smin, L, R))); 1470 EXPECT_FALSE(m_SMin(m_Value(MatchL), m_Value(MatchR)) 1471 .match(IRB.CreateBinaryIntrinsic(Intrinsic::umax, L, R))); 1472 EXPECT_FALSE(m_UMax(m_Value(MatchL), m_Value(MatchR)) 1473 .match(IRB.CreateBinaryIntrinsic(Intrinsic::umin, L, R))); 1474 EXPECT_FALSE(m_UMin(m_Value(MatchL), m_Value(MatchR)) 1475 .match(IRB.CreateBinaryIntrinsic(Intrinsic::smax, L, R))); 1476 } 1477 1478 TEST_F(PatternMatchTest, IntrinsicMatcher) { 1479 Value *Name = IRB.CreateAlloca(IRB.getInt8Ty()); 1480 Value *Hash = IRB.getInt64(0); 1481 Value *Num = IRB.getInt32(1); 1482 Value *Index = IRB.getInt32(2); 1483 Value *Step = IRB.getInt64(3); 1484 1485 Value *Ops[] = {Name, Hash, Num, Index, Step}; 1486 Module *M = BB->getParent()->getParent(); 1487 Function *TheFn = 1488 Intrinsic::getDeclaration(M, Intrinsic::instrprof_increment_step); 1489 1490 Value *Intrinsic5 = CallInst::Create(TheFn, Ops, "", BB); 1491 1492 // Match without capturing. 1493 EXPECT_TRUE(match( 1494 Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>( 1495 m_Value(), m_Value(), m_Value(), m_Value(), m_Value()))); 1496 EXPECT_FALSE(match( 1497 Intrinsic5, m_Intrinsic<Intrinsic::memmove>( 1498 m_Value(), m_Value(), m_Value(), m_Value(), m_Value()))); 1499 1500 // Match with capturing. 1501 Value *Arg1 = nullptr; 1502 Value *Arg2 = nullptr; 1503 Value *Arg3 = nullptr; 1504 Value *Arg4 = nullptr; 1505 Value *Arg5 = nullptr; 1506 EXPECT_TRUE( 1507 match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>( 1508 m_Value(Arg1), m_Value(Arg2), m_Value(Arg3), 1509 m_Value(Arg4), m_Value(Arg5)))); 1510 EXPECT_EQ(Arg1, Name); 1511 EXPECT_EQ(Arg2, Hash); 1512 EXPECT_EQ(Arg3, Num); 1513 EXPECT_EQ(Arg4, Index); 1514 EXPECT_EQ(Arg5, Step); 1515 1516 // Match specific second argument. 1517 EXPECT_TRUE( 1518 match(Intrinsic5, 1519 m_Intrinsic<Intrinsic::instrprof_increment_step>( 1520 m_Value(), m_SpecificInt(0), m_Value(), m_Value(), m_Value()))); 1521 EXPECT_FALSE( 1522 match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>( 1523 m_Value(), m_SpecificInt(10), m_Value(), m_Value(), 1524 m_Value()))); 1525 1526 // Match specific third argument. 1527 EXPECT_TRUE( 1528 match(Intrinsic5, 1529 m_Intrinsic<Intrinsic::instrprof_increment_step>( 1530 m_Value(), m_Value(), m_SpecificInt(1), m_Value(), m_Value()))); 1531 EXPECT_FALSE( 1532 match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>( 1533 m_Value(), m_Value(), m_SpecificInt(10), m_Value(), 1534 m_Value()))); 1535 1536 // Match specific fourth argument. 1537 EXPECT_TRUE( 1538 match(Intrinsic5, 1539 m_Intrinsic<Intrinsic::instrprof_increment_step>( 1540 m_Value(), m_Value(), m_Value(), m_SpecificInt(2), m_Value()))); 1541 EXPECT_FALSE( 1542 match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>( 1543 m_Value(), m_Value(), m_Value(), m_SpecificInt(10), 1544 m_Value()))); 1545 1546 // Match specific fifth argument. 1547 EXPECT_TRUE( 1548 match(Intrinsic5, 1549 m_Intrinsic<Intrinsic::instrprof_increment_step>( 1550 m_Value(), m_Value(), m_Value(), m_Value(), m_SpecificInt(3)))); 1551 EXPECT_FALSE( 1552 match(Intrinsic5, m_Intrinsic<Intrinsic::instrprof_increment_step>( 1553 m_Value(), m_Value(), m_Value(), m_Value(), 1554 m_SpecificInt(10)))); 1555 } 1556 1557 namespace { 1558 1559 struct is_unsigned_zero_pred { 1560 bool isValue(const APInt &C) { return C.isZero(); } 1561 }; 1562 1563 struct is_float_zero_pred { 1564 bool isValue(const APFloat &C) { return C.isZero(); } 1565 }; 1566 1567 template <typename T> struct always_true_pred { 1568 bool isValue(const T &) { return true; } 1569 }; 1570 1571 template <typename T> struct always_false_pred { 1572 bool isValue(const T &) { return false; } 1573 }; 1574 1575 struct is_unsigned_max_pred { 1576 bool isValue(const APInt &C) { return C.isMaxValue(); } 1577 }; 1578 1579 struct is_float_nan_pred { 1580 bool isValue(const APFloat &C) { return C.isNaN(); } 1581 }; 1582 1583 } // namespace 1584 1585 TEST_F(PatternMatchTest, ConstantPredicateType) { 1586 1587 // Scalar integer 1588 APInt U32Max = APInt::getAllOnes(32); 1589 APInt U32Zero = APInt::getZero(32); 1590 APInt U32DeadBeef(32, 0xDEADBEEF); 1591 1592 Type *U32Ty = Type::getInt32Ty(Ctx); 1593 1594 Constant *CU32Max = Constant::getIntegerValue(U32Ty, U32Max); 1595 Constant *CU32Zero = Constant::getIntegerValue(U32Ty, U32Zero); 1596 Constant *CU32DeadBeef = Constant::getIntegerValue(U32Ty, U32DeadBeef); 1597 1598 EXPECT_TRUE(match(CU32Max, cst_pred_ty<is_unsigned_max_pred>())); 1599 EXPECT_FALSE(match(CU32Max, cst_pred_ty<is_unsigned_zero_pred>())); 1600 EXPECT_TRUE(match(CU32Max, cst_pred_ty<always_true_pred<APInt>>())); 1601 EXPECT_FALSE(match(CU32Max, cst_pred_ty<always_false_pred<APInt>>())); 1602 1603 EXPECT_FALSE(match(CU32Zero, cst_pred_ty<is_unsigned_max_pred>())); 1604 EXPECT_TRUE(match(CU32Zero, cst_pred_ty<is_unsigned_zero_pred>())); 1605 EXPECT_TRUE(match(CU32Zero, cst_pred_ty<always_true_pred<APInt>>())); 1606 EXPECT_FALSE(match(CU32Zero, cst_pred_ty<always_false_pred<APInt>>())); 1607 1608 EXPECT_FALSE(match(CU32DeadBeef, cst_pred_ty<is_unsigned_max_pred>())); 1609 EXPECT_FALSE(match(CU32DeadBeef, cst_pred_ty<is_unsigned_zero_pred>())); 1610 EXPECT_TRUE(match(CU32DeadBeef, cst_pred_ty<always_true_pred<APInt>>())); 1611 EXPECT_FALSE(match(CU32DeadBeef, cst_pred_ty<always_false_pred<APInt>>())); 1612 1613 // Scalar float 1614 APFloat F32NaN = APFloat::getNaN(APFloat::IEEEsingle()); 1615 APFloat F32Zero = APFloat::getZero(APFloat::IEEEsingle()); 1616 APFloat F32Pi(3.14f); 1617 1618 Type *F32Ty = Type::getFloatTy(Ctx); 1619 1620 Constant *CF32NaN = ConstantFP::get(F32Ty, F32NaN); 1621 Constant *CF32Zero = ConstantFP::get(F32Ty, F32Zero); 1622 Constant *CF32Pi = ConstantFP::get(F32Ty, F32Pi); 1623 1624 EXPECT_TRUE(match(CF32NaN, cstfp_pred_ty<is_float_nan_pred>())); 1625 EXPECT_FALSE(match(CF32NaN, cstfp_pred_ty<is_float_zero_pred>())); 1626 EXPECT_TRUE(match(CF32NaN, cstfp_pred_ty<always_true_pred<APFloat>>())); 1627 EXPECT_FALSE(match(CF32NaN, cstfp_pred_ty<always_false_pred<APFloat>>())); 1628 1629 EXPECT_FALSE(match(CF32Zero, cstfp_pred_ty<is_float_nan_pred>())); 1630 EXPECT_TRUE(match(CF32Zero, cstfp_pred_ty<is_float_zero_pred>())); 1631 EXPECT_TRUE(match(CF32Zero, cstfp_pred_ty<always_true_pred<APFloat>>())); 1632 EXPECT_FALSE(match(CF32Zero, cstfp_pred_ty<always_false_pred<APFloat>>())); 1633 1634 EXPECT_FALSE(match(CF32Pi, cstfp_pred_ty<is_float_nan_pred>())); 1635 EXPECT_FALSE(match(CF32Pi, cstfp_pred_ty<is_float_zero_pred>())); 1636 EXPECT_TRUE(match(CF32Pi, cstfp_pred_ty<always_true_pred<APFloat>>())); 1637 EXPECT_FALSE(match(CF32Pi, cstfp_pred_ty<always_false_pred<APFloat>>())); 1638 1639 auto FixedEC = ElementCount::getFixed(4); 1640 auto ScalableEC = ElementCount::getScalable(4); 1641 1642 // Vector splat 1643 1644 for (auto EC : {FixedEC, ScalableEC}) { 1645 // integer 1646 1647 Constant *CSplatU32Max = ConstantVector::getSplat(EC, CU32Max); 1648 Constant *CSplatU32Zero = ConstantVector::getSplat(EC, CU32Zero); 1649 Constant *CSplatU32DeadBeef = ConstantVector::getSplat(EC, CU32DeadBeef); 1650 1651 EXPECT_TRUE(match(CSplatU32Max, cst_pred_ty<is_unsigned_max_pred>())); 1652 EXPECT_FALSE(match(CSplatU32Max, cst_pred_ty<is_unsigned_zero_pred>())); 1653 EXPECT_TRUE(match(CSplatU32Max, cst_pred_ty<always_true_pred<APInt>>())); 1654 EXPECT_FALSE(match(CSplatU32Max, cst_pred_ty<always_false_pred<APInt>>())); 1655 1656 EXPECT_FALSE(match(CSplatU32Zero, cst_pred_ty<is_unsigned_max_pred>())); 1657 EXPECT_TRUE(match(CSplatU32Zero, cst_pred_ty<is_unsigned_zero_pred>())); 1658 EXPECT_TRUE(match(CSplatU32Zero, cst_pred_ty<always_true_pred<APInt>>())); 1659 EXPECT_FALSE(match(CSplatU32Zero, cst_pred_ty<always_false_pred<APInt>>())); 1660 1661 EXPECT_FALSE(match(CSplatU32DeadBeef, cst_pred_ty<is_unsigned_max_pred>())); 1662 EXPECT_FALSE( 1663 match(CSplatU32DeadBeef, cst_pred_ty<is_unsigned_zero_pred>())); 1664 EXPECT_TRUE( 1665 match(CSplatU32DeadBeef, cst_pred_ty<always_true_pred<APInt>>())); 1666 EXPECT_FALSE( 1667 match(CSplatU32DeadBeef, cst_pred_ty<always_false_pred<APInt>>())); 1668 1669 // float 1670 1671 Constant *CSplatF32NaN = ConstantVector::getSplat(EC, CF32NaN); 1672 Constant *CSplatF32Zero = ConstantVector::getSplat(EC, CF32Zero); 1673 Constant *CSplatF32Pi = ConstantVector::getSplat(EC, CF32Pi); 1674 1675 EXPECT_TRUE(match(CSplatF32NaN, cstfp_pred_ty<is_float_nan_pred>())); 1676 EXPECT_FALSE(match(CSplatF32NaN, cstfp_pred_ty<is_float_zero_pred>())); 1677 EXPECT_TRUE( 1678 match(CSplatF32NaN, cstfp_pred_ty<always_true_pred<APFloat>>())); 1679 EXPECT_FALSE( 1680 match(CSplatF32NaN, cstfp_pred_ty<always_false_pred<APFloat>>())); 1681 1682 EXPECT_FALSE(match(CSplatF32Zero, cstfp_pred_ty<is_float_nan_pred>())); 1683 EXPECT_TRUE(match(CSplatF32Zero, cstfp_pred_ty<is_float_zero_pred>())); 1684 EXPECT_TRUE( 1685 match(CSplatF32Zero, cstfp_pred_ty<always_true_pred<APFloat>>())); 1686 EXPECT_FALSE( 1687 match(CSplatF32Zero, cstfp_pred_ty<always_false_pred<APFloat>>())); 1688 1689 EXPECT_FALSE(match(CSplatF32Pi, cstfp_pred_ty<is_float_nan_pred>())); 1690 EXPECT_FALSE(match(CSplatF32Pi, cstfp_pred_ty<is_float_zero_pred>())); 1691 EXPECT_TRUE(match(CSplatF32Pi, cstfp_pred_ty<always_true_pred<APFloat>>())); 1692 EXPECT_FALSE( 1693 match(CSplatF32Pi, cstfp_pred_ty<always_false_pred<APFloat>>())); 1694 } 1695 1696 // Int arbitrary vector 1697 1698 Constant *CMixedU32 = ConstantVector::get({CU32Max, CU32Zero, CU32DeadBeef}); 1699 Constant *CU32Undef = UndefValue::get(U32Ty); 1700 Constant *CU32MaxWithUndef = 1701 ConstantVector::get({CU32Undef, CU32Max, CU32Undef}); 1702 1703 EXPECT_FALSE(match(CMixedU32, cst_pred_ty<is_unsigned_max_pred>())); 1704 EXPECT_FALSE(match(CMixedU32, cst_pred_ty<is_unsigned_zero_pred>())); 1705 EXPECT_TRUE(match(CMixedU32, cst_pred_ty<always_true_pred<APInt>>())); 1706 EXPECT_FALSE(match(CMixedU32, cst_pred_ty<always_false_pred<APInt>>())); 1707 1708 EXPECT_TRUE(match(CU32MaxWithUndef, cst_pred_ty<is_unsigned_max_pred>())); 1709 EXPECT_FALSE(match(CU32MaxWithUndef, cst_pred_ty<is_unsigned_zero_pred>())); 1710 EXPECT_TRUE(match(CU32MaxWithUndef, cst_pred_ty<always_true_pred<APInt>>())); 1711 EXPECT_FALSE( 1712 match(CU32MaxWithUndef, cst_pred_ty<always_false_pred<APInt>>())); 1713 1714 // Float arbitrary vector 1715 1716 Constant *CMixedF32 = ConstantVector::get({CF32NaN, CF32Zero, CF32Pi}); 1717 Constant *CF32Undef = UndefValue::get(F32Ty); 1718 Constant *CF32NaNWithUndef = 1719 ConstantVector::get({CF32Undef, CF32NaN, CF32Undef}); 1720 1721 EXPECT_FALSE(match(CMixedF32, cstfp_pred_ty<is_float_nan_pred>())); 1722 EXPECT_FALSE(match(CMixedF32, cstfp_pred_ty<is_float_zero_pred>())); 1723 EXPECT_TRUE(match(CMixedF32, cstfp_pred_ty<always_true_pred<APFloat>>())); 1724 EXPECT_FALSE(match(CMixedF32, cstfp_pred_ty<always_false_pred<APFloat>>())); 1725 1726 EXPECT_TRUE(match(CF32NaNWithUndef, cstfp_pred_ty<is_float_nan_pred>())); 1727 EXPECT_FALSE(match(CF32NaNWithUndef, cstfp_pred_ty<is_float_zero_pred>())); 1728 EXPECT_TRUE( 1729 match(CF32NaNWithUndef, cstfp_pred_ty<always_true_pred<APFloat>>())); 1730 EXPECT_FALSE( 1731 match(CF32NaNWithUndef, cstfp_pred_ty<always_false_pred<APFloat>>())); 1732 } 1733 1734 TEST_F(PatternMatchTest, InsertValue) { 1735 Type *StructTy = StructType::create(IRB.getContext(), 1736 {IRB.getInt32Ty(), IRB.getInt64Ty()}); 1737 Value *Ins0 = 1738 IRB.CreateInsertValue(UndefValue::get(StructTy), IRB.getInt32(20), 0); 1739 Value *Ins1 = IRB.CreateInsertValue(Ins0, IRB.getInt64(90), 1); 1740 1741 EXPECT_TRUE(match(Ins0, m_InsertValue<0>(m_Value(), m_Value()))); 1742 EXPECT_FALSE(match(Ins0, m_InsertValue<1>(m_Value(), m_Value()))); 1743 EXPECT_FALSE(match(Ins1, m_InsertValue<0>(m_Value(), m_Value()))); 1744 EXPECT_TRUE(match(Ins1, m_InsertValue<1>(m_Value(), m_Value()))); 1745 1746 EXPECT_TRUE(match(Ins0, m_InsertValue<0>(m_Undef(), m_SpecificInt(20)))); 1747 EXPECT_FALSE(match(Ins0, m_InsertValue<0>(m_Undef(), m_SpecificInt(0)))); 1748 1749 EXPECT_TRUE( 1750 match(Ins1, m_InsertValue<1>(m_InsertValue<0>(m_Value(), m_Value()), 1751 m_SpecificInt(90)))); 1752 EXPECT_FALSE(match(IRB.getInt64(99), m_InsertValue<0>(m_Value(), m_Value()))); 1753 } 1754 1755 TEST_F(PatternMatchTest, LogicalSelects) { 1756 Value *Alloca = IRB.CreateAlloca(IRB.getInt1Ty()); 1757 Value *X = IRB.CreateLoad(IRB.getInt1Ty(), Alloca); 1758 Value *Y = IRB.CreateLoad(IRB.getInt1Ty(), Alloca); 1759 Constant *T = IRB.getInt1(true); 1760 Constant *F = IRB.getInt1(false); 1761 Value *And = IRB.CreateSelect(X, Y, F); 1762 Value *Or = IRB.CreateSelect(X, T, Y); 1763 1764 // Logical and: 1765 // Check basic no-capture logic - opcode and constant must match. 1766 EXPECT_TRUE(match(And, m_LogicalAnd(m_Value(), m_Value()))); 1767 EXPECT_TRUE(match(And, m_c_LogicalAnd(m_Value(), m_Value()))); 1768 EXPECT_FALSE(match(And, m_LogicalOr(m_Value(), m_Value()))); 1769 EXPECT_FALSE(match(And, m_c_LogicalOr(m_Value(), m_Value()))); 1770 1771 // Check with captures. 1772 EXPECT_TRUE(match(And, m_LogicalAnd(m_Specific(X), m_Value()))); 1773 EXPECT_TRUE(match(And, m_LogicalAnd(m_Value(), m_Specific(Y)))); 1774 EXPECT_TRUE(match(And, m_LogicalAnd(m_Specific(X), m_Specific(Y)))); 1775 1776 EXPECT_FALSE(match(And, m_LogicalAnd(m_Specific(Y), m_Value()))); 1777 EXPECT_FALSE(match(And, m_LogicalAnd(m_Value(), m_Specific(X)))); 1778 EXPECT_FALSE(match(And, m_LogicalAnd(m_Specific(Y), m_Specific(X)))); 1779 1780 EXPECT_FALSE(match(And, m_LogicalAnd(m_Specific(X), m_Specific(X)))); 1781 EXPECT_FALSE(match(And, m_LogicalAnd(m_Specific(Y), m_Specific(Y)))); 1782 1783 // Check captures for commutative match. 1784 EXPECT_TRUE(match(And, m_c_LogicalAnd(m_Specific(X), m_Value()))); 1785 EXPECT_TRUE(match(And, m_c_LogicalAnd(m_Value(), m_Specific(Y)))); 1786 EXPECT_TRUE(match(And, m_c_LogicalAnd(m_Specific(X), m_Specific(Y)))); 1787 1788 EXPECT_TRUE(match(And, m_c_LogicalAnd(m_Specific(Y), m_Value()))); 1789 EXPECT_TRUE(match(And, m_c_LogicalAnd(m_Value(), m_Specific(X)))); 1790 EXPECT_TRUE(match(And, m_c_LogicalAnd(m_Specific(Y), m_Specific(X)))); 1791 1792 EXPECT_FALSE(match(And, m_c_LogicalAnd(m_Specific(X), m_Specific(X)))); 1793 EXPECT_FALSE(match(And, m_c_LogicalAnd(m_Specific(Y), m_Specific(Y)))); 1794 1795 // Logical or: 1796 // Check basic no-capture logic - opcode and constant must match. 1797 EXPECT_TRUE(match(Or, m_LogicalOr(m_Value(), m_Value()))); 1798 EXPECT_TRUE(match(Or, m_c_LogicalOr(m_Value(), m_Value()))); 1799 EXPECT_FALSE(match(Or, m_LogicalAnd(m_Value(), m_Value()))); 1800 EXPECT_FALSE(match(Or, m_c_LogicalAnd(m_Value(), m_Value()))); 1801 1802 // Check with captures. 1803 EXPECT_TRUE(match(Or, m_LogicalOr(m_Specific(X), m_Value()))); 1804 EXPECT_TRUE(match(Or, m_LogicalOr(m_Value(), m_Specific(Y)))); 1805 EXPECT_TRUE(match(Or, m_LogicalOr(m_Specific(X), m_Specific(Y)))); 1806 1807 EXPECT_FALSE(match(Or, m_LogicalOr(m_Specific(Y), m_Value()))); 1808 EXPECT_FALSE(match(Or, m_LogicalOr(m_Value(), m_Specific(X)))); 1809 EXPECT_FALSE(match(Or, m_LogicalOr(m_Specific(Y), m_Specific(X)))); 1810 1811 EXPECT_FALSE(match(Or, m_LogicalOr(m_Specific(X), m_Specific(X)))); 1812 EXPECT_FALSE(match(Or, m_LogicalOr(m_Specific(Y), m_Specific(Y)))); 1813 1814 // Check captures for commutative match. 1815 EXPECT_TRUE(match(Or, m_c_LogicalOr(m_Specific(X), m_Value()))); 1816 EXPECT_TRUE(match(Or, m_c_LogicalOr(m_Value(), m_Specific(Y)))); 1817 EXPECT_TRUE(match(Or, m_c_LogicalOr(m_Specific(X), m_Specific(Y)))); 1818 1819 EXPECT_TRUE(match(Or, m_c_LogicalOr(m_Specific(Y), m_Value()))); 1820 EXPECT_TRUE(match(Or, m_c_LogicalOr(m_Value(), m_Specific(X)))); 1821 EXPECT_TRUE(match(Or, m_c_LogicalOr(m_Specific(Y), m_Specific(X)))); 1822 1823 EXPECT_FALSE(match(Or, m_c_LogicalOr(m_Specific(X), m_Specific(X)))); 1824 EXPECT_FALSE(match(Or, m_c_LogicalOr(m_Specific(Y), m_Specific(Y)))); 1825 } 1826 1827 TEST_F(PatternMatchTest, VectorLogicalSelects) { 1828 Type *i1 = IRB.getInt1Ty(); 1829 Type *v3i1 = FixedVectorType::get(i1, 3); 1830 1831 Value *Alloca = IRB.CreateAlloca(i1); 1832 Value *AllocaVec = IRB.CreateAlloca(v3i1); 1833 Value *Scalar = IRB.CreateLoad(i1, Alloca); 1834 Value *Vector = IRB.CreateLoad(v3i1, AllocaVec); 1835 Constant *F = Constant::getNullValue(v3i1); 1836 Constant *T = Constant::getAllOnesValue(v3i1); 1837 1838 // select <3 x i1> Vector, <3 x i1> Vector, <3 x i1> <i1 0, i1 0, i1 0> 1839 Value *VecAnd = IRB.CreateSelect(Vector, Vector, F); 1840 1841 // select i1 Scalar, <3 x i1> Vector, <3 x i1> <i1 0, i1 0, i1 0> 1842 Value *MixedTypeAnd = IRB.CreateSelect(Scalar, Vector, F); 1843 1844 // select <3 x i1> Vector, <3 x i1> <i1 1, i1 1, i1 1>, <3 x i1> Vector 1845 Value *VecOr = IRB.CreateSelect(Vector, T, Vector); 1846 1847 // select i1 Scalar, <3 x i1> <i1 1, i1 1, i1 1>, <3 x i1> Vector 1848 Value *MixedTypeOr = IRB.CreateSelect(Scalar, T, Vector); 1849 1850 // We allow matching a real vector logical select, 1851 // but not a scalar select of vector bools. 1852 EXPECT_TRUE(match(VecAnd, m_LogicalAnd(m_Value(), m_Value()))); 1853 EXPECT_FALSE(match(MixedTypeAnd, m_LogicalAnd(m_Value(), m_Value()))); 1854 EXPECT_TRUE(match(VecOr, m_LogicalOr(m_Value(), m_Value()))); 1855 EXPECT_FALSE(match(MixedTypeOr, m_LogicalOr(m_Value(), m_Value()))); 1856 } 1857 1858 TEST_F(PatternMatchTest, VScale) { 1859 DataLayout DL = M->getDataLayout(); 1860 1861 Type *VecTy = ScalableVectorType::get(IRB.getInt8Ty(), 1); 1862 Value *NullPtrVec = 1863 Constant::getNullValue(PointerType::getUnqual(VecTy->getContext())); 1864 Value *GEP = IRB.CreateGEP(VecTy, NullPtrVec, IRB.getInt64(1)); 1865 Value *PtrToInt = IRB.CreatePtrToInt(GEP, DL.getIntPtrType(GEP->getType())); 1866 EXPECT_TRUE(match(PtrToInt, m_VScale())); 1867 1868 Type *VecTy2 = ScalableVectorType::get(IRB.getInt8Ty(), 2); 1869 Value *NullPtrVec2 = 1870 Constant::getNullValue(PointerType::getUnqual(VecTy2->getContext())); 1871 Value *GEP2 = IRB.CreateGEP(VecTy, NullPtrVec2, IRB.getInt64(1)); 1872 Value *PtrToInt2 = 1873 IRB.CreatePtrToInt(GEP2, DL.getIntPtrType(GEP2->getType())); 1874 EXPECT_TRUE(match(PtrToInt2, m_VScale())); 1875 } 1876 1877 TEST_F(PatternMatchTest, NotForbidUndef) { 1878 Type *ScalarTy = IRB.getInt8Ty(); 1879 Type *VectorTy = FixedVectorType::get(ScalarTy, 3); 1880 Constant *ScalarUndef = UndefValue::get(ScalarTy); 1881 Constant *ScalarOnes = Constant::getAllOnesValue(ScalarTy); 1882 Constant *VectorZero = Constant::getNullValue(VectorTy); 1883 Constant *VectorOnes = Constant::getAllOnesValue(VectorTy); 1884 1885 SmallVector<Constant *, 3> MixedElems; 1886 MixedElems.push_back(ScalarOnes); 1887 MixedElems.push_back(ScalarOnes); 1888 MixedElems.push_back(ScalarUndef); 1889 Constant *VectorMixed = ConstantVector::get(MixedElems); 1890 1891 Value *Not = IRB.CreateXor(VectorZero, VectorOnes); 1892 Value *X; 1893 EXPECT_TRUE(match(Not, m_Not(m_Value()))); 1894 EXPECT_TRUE(match(Not, m_NotForbidUndef(m_Value(X)))); 1895 EXPECT_TRUE(match(X, m_Zero())); 1896 1897 Value *NotCommute = IRB.CreateXor(VectorOnes, VectorZero); 1898 Value *Y; 1899 EXPECT_TRUE(match(NotCommute, m_Not(m_Value()))); 1900 EXPECT_TRUE(match(NotCommute, m_NotForbidUndef(m_Value(Y)))); 1901 EXPECT_TRUE(match(Y, m_Zero())); 1902 1903 Value *NotWithUndefs = IRB.CreateXor(VectorZero, VectorMixed); 1904 EXPECT_TRUE(match(NotWithUndefs, m_Not(m_Value()))); 1905 EXPECT_FALSE(match(NotWithUndefs, m_NotForbidUndef(m_Value()))); 1906 1907 Value *NotWithUndefsCommute = IRB.CreateXor(VectorMixed, VectorZero); 1908 EXPECT_TRUE(match(NotWithUndefsCommute, m_Not(m_Value()))); 1909 EXPECT_FALSE(match(NotWithUndefsCommute, m_NotForbidUndef(m_Value(X)))); 1910 } 1911 1912 template <typename T> struct MutableConstTest : PatternMatchTest { }; 1913 1914 typedef ::testing::Types<std::tuple<Value*, Instruction*>, 1915 std::tuple<const Value*, const Instruction *>> 1916 MutableConstTestTypes; 1917 TYPED_TEST_SUITE(MutableConstTest, MutableConstTestTypes, ); 1918 1919 TYPED_TEST(MutableConstTest, ICmp) { 1920 auto &IRB = PatternMatchTest::IRB; 1921 1922 typedef std::tuple_element_t<0, TypeParam> ValueType; 1923 typedef std::tuple_element_t<1, TypeParam> InstructionType; 1924 1925 Value *L = IRB.getInt32(1); 1926 Value *R = IRB.getInt32(2); 1927 ICmpInst::Predicate Pred = ICmpInst::ICMP_UGT; 1928 1929 ValueType MatchL; 1930 ValueType MatchR; 1931 ICmpInst::Predicate MatchPred; 1932 1933 EXPECT_TRUE(m_ICmp(MatchPred, m_Value(MatchL), m_Value(MatchR)) 1934 .match((InstructionType)IRB.CreateICmp(Pred, L, R))); 1935 EXPECT_EQ(L, MatchL); 1936 EXPECT_EQ(R, MatchR); 1937 } 1938 1939 TEST_F(PatternMatchTest, ConstExpr) { 1940 Constant *G = 1941 M->getOrInsertGlobal("dummy", PointerType::getUnqual(IRB.getInt32Ty())); 1942 Constant *S = ConstantExpr::getPtrToInt(G, IRB.getInt32Ty()); 1943 Type *VecTy = FixedVectorType::get(IRB.getInt32Ty(), 2); 1944 PoisonValue *P = PoisonValue::get(VecTy); 1945 Constant *V = ConstantExpr::getInsertElement(P, S, IRB.getInt32(0)); 1946 1947 // The match succeeds on a constant that is a constant expression itself 1948 // or a constant that contains a constant expression. 1949 EXPECT_TRUE(match(S, m_ConstantExpr())); 1950 EXPECT_TRUE(match(V, m_ConstantExpr())); 1951 } 1952 1953 TEST_F(PatternMatchTest, PtrAdd) { 1954 Type *PtrTy = PointerType::getUnqual(Ctx); 1955 Type *IdxTy = Type::getInt64Ty(Ctx); 1956 Constant *Null = Constant::getNullValue(PtrTy); 1957 Constant *Offset = ConstantInt::get(IdxTy, 42); 1958 Value *PtrAdd = IRB.CreatePtrAdd(Null, Offset); 1959 Value *OtherGEP = IRB.CreateGEP(IdxTy, Null, Offset); 1960 Value *PtrAddConst = 1961 ConstantExpr::getGetElementPtr(Type::getInt8Ty(Ctx), Null, Offset); 1962 1963 Value *A, *B; 1964 EXPECT_TRUE(match(PtrAdd, m_PtrAdd(m_Value(A), m_Value(B)))); 1965 EXPECT_EQ(A, Null); 1966 EXPECT_EQ(B, Offset); 1967 1968 EXPECT_TRUE(match(PtrAddConst, m_PtrAdd(m_Value(A), m_Value(B)))); 1969 EXPECT_EQ(A, Null); 1970 EXPECT_EQ(B, Offset); 1971 1972 EXPECT_FALSE(match(OtherGEP, m_PtrAdd(m_Value(A), m_Value(B)))); 1973 } 1974 1975 } // anonymous namespace. 1976