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