unittests/IR/InstructionsTest.cpp

   1 //===- llvm/unittest/IR/InstructionsTest.cpp - Instructions unit tests ----===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/IR/Instructions.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/LLVMContext.h"
  20 #include "llvm/IR/MDBuilder.h"
  21 #include "llvm/IR/Module.h"
  22 #include "llvm/IR/Operator.h"
  23 #include "gtest/gtest.h"
  24 #include <memory>
  25
  26 namespace llvm {
  27 namespace {
  28
  29 TEST(InstructionsTest, ReturnInst) {
  30   LLVMContext &C(getGlobalContext());
  31
  32   // test for PR6589
  33   const ReturnInst* r0 = ReturnInst::Create(C);
  34   EXPECT_EQ(r0->getNumOperands(), 0U);
  35   EXPECT_EQ(r0->op_begin(), r0->op_end());
  36
  37   IntegerType* Int1 = IntegerType::get(C, 1);
  38   Constant* One = ConstantInt::get(Int1, 1, true);
  39   const ReturnInst* r1 = ReturnInst::Create(C, One);
  40   EXPECT_EQ(1U, r1->getNumOperands());
  41   User::const_op_iterator b(r1->op_begin());
  42   EXPECT_NE(r1->op_end(), b);
  43   EXPECT_EQ(One, *b);
  44   EXPECT_EQ(One, r1->getOperand(0));
  45   ++b;
  46   EXPECT_EQ(r1->op_end(), b);
  47
  48   // clean up
  49   delete r0;
  50   delete r1;
  51 }
  52
  53 TEST(InstructionsTest, CallInst) {
  54   LLVMContext &C(getGlobalContext());
  55   std::unique_ptr<Module> M(new Module("MyModule", C));
  56
  57   Type *ArgTypes[] = {Type::getInt8Ty(C), Type::getInt32Ty(C),
  58                       Type::getInt64Ty(C)};
  59   FunctionType *FTy = FunctionType::get(Type::getVoidTy(C), ArgTypes, false);
  60   Function *F = Function::Create(FTy, Function::ExternalLinkage, "", M.get());
  61
  62   Value *Args[] = {ConstantInt::get(Type::getInt8Ty(C), 20),
  63                    ConstantInt::get(Type::getInt32Ty(C), 9999),
  64                    ConstantInt::get(Type::getInt64Ty(C), 42)};
  65   std::unique_ptr<CallInst> Call(CallInst::Create(F, Args));
  66
  67   // Make sure iteration over a call's arguments works as expected.
  68   unsigned Idx = 0;
  69   for (Value *Arg : Call->arg_operands()) {
  70     EXPECT_EQ(ArgTypes[Idx], Arg->getType());
  71     EXPECT_EQ(Call->getArgOperand(Idx)->getType(), Arg->getType());
  72     Idx++;
  73   }
  74 }
  75
  76 TEST(InstructionsTest, BranchInst) {
  77   LLVMContext &C(getGlobalContext());
  78
  79   // Make a BasicBlocks
  80   BasicBlock* bb0 = BasicBlock::Create(C);
  81   BasicBlock* bb1 = BasicBlock::Create(C);
  82
  83   // Mandatory BranchInst
  84   const BranchInst* b0 = BranchInst::Create(bb0);
  85
  86   EXPECT_TRUE(b0->isUnconditional());
  87   EXPECT_FALSE(b0->isConditional());
  88   EXPECT_EQ(1U, b0->getNumSuccessors());
  89
  90   // check num operands
  91   EXPECT_EQ(1U, b0->getNumOperands());
  92
  93   EXPECT_NE(b0->op_begin(), b0->op_end());
  94   EXPECT_EQ(b0->op_end(), std::next(b0->op_begin()));
  95
  96   EXPECT_EQ(b0->op_end(), std::next(b0->op_begin()));
  97
  98   IntegerType* Int1 = IntegerType::get(C, 1);
  99   Constant* One = ConstantInt::get(Int1, 1, true);
 100
 101   // Conditional BranchInst
 102   BranchInst* b1 = BranchInst::Create(bb0, bb1, One);
 103
 104   EXPECT_FALSE(b1->isUnconditional());
 105   EXPECT_TRUE(b1->isConditional());
 106   EXPECT_EQ(2U, b1->getNumSuccessors());
 107
 108   // check num operands
 109   EXPECT_EQ(3U, b1->getNumOperands());
 110
 111   User::const_op_iterator b(b1->op_begin());
 112
 113   // check COND
 114   EXPECT_NE(b, b1->op_end());
 115   EXPECT_EQ(One, *b);
 116   EXPECT_EQ(One, b1->getOperand(0));
 117   EXPECT_EQ(One, b1->getCondition());
 118   ++b;
 119
 120   // check ELSE
 121   EXPECT_EQ(bb1, *b);
 122   EXPECT_EQ(bb1, b1->getOperand(1));
 123   EXPECT_EQ(bb1, b1->getSuccessor(1));
 124   ++b;
 125
 126   // check THEN
 127   EXPECT_EQ(bb0, *b);
 128   EXPECT_EQ(bb0, b1->getOperand(2));
 129   EXPECT_EQ(bb0, b1->getSuccessor(0));
 130   ++b;
 131
 132   EXPECT_EQ(b1->op_end(), b);
 133
 134   // clean up
 135   delete b0;
 136   delete b1;
 137
 138   delete bb0;
 139   delete bb1;
 140 }
 141
 142 TEST(InstructionsTest, CastInst) {
 143   LLVMContext &C(getGlobalContext());
 144
 145   Type *Int8Ty = Type::getInt8Ty(C);
 146   Type *Int16Ty = Type::getInt16Ty(C);
 147   Type *Int32Ty = Type::getInt32Ty(C);
 148   Type *Int64Ty = Type::getInt64Ty(C);
 149   Type *V8x8Ty = VectorType::get(Int8Ty, 8);
 150   Type *V8x64Ty = VectorType::get(Int64Ty, 8);
 151   Type *X86MMXTy = Type::getX86_MMXTy(C);
 152
 153   Type *HalfTy = Type::getHalfTy(C);
 154   Type *FloatTy = Type::getFloatTy(C);
 155   Type *DoubleTy = Type::getDoubleTy(C);
 156
 157   Type *V2Int32Ty = VectorType::get(Int32Ty, 2);
 158   Type *V2Int64Ty = VectorType::get(Int64Ty, 2);
 159   Type *V4Int16Ty = VectorType::get(Int16Ty, 4);
 160
 161   Type *Int32PtrTy = PointerType::get(Int32Ty, 0);
 162   Type *Int64PtrTy = PointerType::get(Int64Ty, 0);
 163
 164   Type *Int32PtrAS1Ty = PointerType::get(Int32Ty, 1);
 165   Type *Int64PtrAS1Ty = PointerType::get(Int64Ty, 1);
 166
 167   Type *V2Int32PtrAS1Ty = VectorType::get(Int32PtrAS1Ty, 2);
 168   Type *V2Int64PtrAS1Ty = VectorType::get(Int64PtrAS1Ty, 2);
 169   Type *V4Int32PtrAS1Ty = VectorType::get(Int32PtrAS1Ty, 4);
 170   Type *V4Int64PtrAS1Ty = VectorType::get(Int64PtrAS1Ty, 4);
 171
 172   Type *V2Int64PtrTy = VectorType::get(Int64PtrTy, 2);
 173   Type *V2Int32PtrTy = VectorType::get(Int32PtrTy, 2);
 174   Type *V4Int32PtrTy = VectorType::get(Int32PtrTy, 4);
 175
 176   const Constant* c8 = Constant::getNullValue(V8x8Ty);
 177   const Constant* c64 = Constant::getNullValue(V8x64Ty);
 178
 179   const Constant *v2ptr32 = Constant::getNullValue(V2Int32PtrTy);
 180
 181   EXPECT_TRUE(CastInst::isCastable(V8x8Ty, X86MMXTy));
 182   EXPECT_TRUE(CastInst::isCastable(X86MMXTy, V8x8Ty));
 183   EXPECT_FALSE(CastInst::isCastable(Int64Ty, X86MMXTy));
 184   EXPECT_TRUE(CastInst::isCastable(V8x64Ty, V8x8Ty));
 185   EXPECT_TRUE(CastInst::isCastable(V8x8Ty, V8x64Ty));
 186   EXPECT_EQ(CastInst::Trunc, CastInst::getCastOpcode(c64, true, V8x8Ty, true));
 187   EXPECT_EQ(CastInst::SExt, CastInst::getCastOpcode(c8, true, V8x64Ty, true));
 188
 189   EXPECT_FALSE(CastInst::isBitCastable(V8x8Ty, X86MMXTy));
 190   EXPECT_FALSE(CastInst::isBitCastable(X86MMXTy, V8x8Ty));
 191   EXPECT_FALSE(CastInst::isBitCastable(Int64Ty, X86MMXTy));
 192   EXPECT_FALSE(CastInst::isBitCastable(V8x64Ty, V8x8Ty));
 193   EXPECT_FALSE(CastInst::isBitCastable(V8x8Ty, V8x64Ty));
 194
 195   // Check address space casts are rejected since we don't know the sizes here
 196   EXPECT_FALSE(CastInst::isBitCastable(Int32PtrTy, Int32PtrAS1Ty));
 197   EXPECT_FALSE(CastInst::isBitCastable(Int32PtrAS1Ty, Int32PtrTy));
 198   EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrTy, V2Int32PtrAS1Ty));
 199   EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V2Int32PtrTy));
 200   EXPECT_TRUE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V2Int64PtrAS1Ty));
 201   EXPECT_TRUE(CastInst::isCastable(V2Int32PtrAS1Ty, V2Int32PtrTy));
 202   EXPECT_EQ(CastInst::AddrSpaceCast, CastInst::getCastOpcode(v2ptr32, true,
 203                                                              V2Int32PtrAS1Ty,
 204                                                              true));
 205
 206   // Test mismatched number of elements for pointers
 207   EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V4Int64PtrAS1Ty));
 208   EXPECT_FALSE(CastInst::isBitCastable(V4Int64PtrAS1Ty, V2Int32PtrAS1Ty));
 209   EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V4Int32PtrAS1Ty));
 210   EXPECT_FALSE(CastInst::isBitCastable(Int32PtrTy, V2Int32PtrTy));
 211   EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrTy, Int32PtrTy));
 212
 213   EXPECT_TRUE(CastInst::isBitCastable(Int32PtrTy, Int64PtrTy));
 214   EXPECT_FALSE(CastInst::isBitCastable(DoubleTy, FloatTy));
 215   EXPECT_FALSE(CastInst::isBitCastable(FloatTy, DoubleTy));
 216   EXPECT_TRUE(CastInst::isBitCastable(FloatTy, FloatTy));
 217   EXPECT_TRUE(CastInst::isBitCastable(FloatTy, FloatTy));
 218   EXPECT_TRUE(CastInst::isBitCastable(FloatTy, Int32Ty));
 219   EXPECT_TRUE(CastInst::isBitCastable(Int16Ty, HalfTy));
 220   EXPECT_TRUE(CastInst::isBitCastable(Int32Ty, FloatTy));
 221   EXPECT_TRUE(CastInst::isBitCastable(V2Int32Ty, Int64Ty));
 222
 223   EXPECT_TRUE(CastInst::isBitCastable(V2Int32Ty, V4Int16Ty));
 224   EXPECT_FALSE(CastInst::isBitCastable(Int32Ty, Int64Ty));
 225   EXPECT_FALSE(CastInst::isBitCastable(Int64Ty, Int32Ty));
 226
 227   EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrTy, Int64Ty));
 228   EXPECT_FALSE(CastInst::isBitCastable(Int64Ty, V2Int32PtrTy));
 229   EXPECT_TRUE(CastInst::isBitCastable(V2Int64PtrTy, V2Int32PtrTy));
 230   EXPECT_TRUE(CastInst::isBitCastable(V2Int32PtrTy, V2Int64PtrTy));
 231   EXPECT_FALSE(CastInst::isBitCastable(V2Int32Ty, V2Int64Ty));
 232   EXPECT_FALSE(CastInst::isBitCastable(V2Int64Ty, V2Int32Ty));
 233
 234
 235   EXPECT_FALSE(CastInst::castIsValid(Instruction::BitCast,
 236                                      Constant::getNullValue(V4Int32PtrTy),
 237                                      V2Int32PtrTy));
 238   EXPECT_FALSE(CastInst::castIsValid(Instruction::BitCast,
 239                                      Constant::getNullValue(V2Int32PtrTy),
 240                                      V4Int32PtrTy));
 241
 242   EXPECT_FALSE(CastInst::castIsValid(Instruction::AddrSpaceCast,
 243                                      Constant::getNullValue(V4Int32PtrAS1Ty),
 244                                      V2Int32PtrTy));
 245   EXPECT_FALSE(CastInst::castIsValid(Instruction::AddrSpaceCast,
 246                                      Constant::getNullValue(V2Int32PtrTy),
 247                                      V4Int32PtrAS1Ty));
 248
 249
 250   // Check that assertion is not hit when creating a cast with a vector of
 251   // pointers
 252   // First form
 253   BasicBlock *BB = BasicBlock::Create(C);
 254   Constant *NullV2I32Ptr = Constant::getNullValue(V2Int32PtrTy);
 255   CastInst::CreatePointerCast(NullV2I32Ptr, V2Int32Ty, "foo", BB);
 256
 257   // Second form
 258   CastInst::CreatePointerCast(NullV2I32Ptr, V2Int32Ty);
 259 }
 260
 261 TEST(InstructionsTest, VectorGep) {
 262   LLVMContext &C(getGlobalContext());
 263
 264   // Type Definitions
 265   PointerType *Ptri8Ty = PointerType::get(IntegerType::get(C, 8), 0);
 266   PointerType *Ptri32Ty = PointerType::get(IntegerType::get(C, 32), 0);
 267
 268   VectorType *V2xi8PTy = VectorType::get(Ptri8Ty, 2);
 269   VectorType *V2xi32PTy = VectorType::get(Ptri32Ty, 2);
 270
 271   // Test different aspects of the vector-of-pointers type
 272   // and GEPs which use this type.
 273   ConstantInt *Ci32a = ConstantInt::get(C, APInt(32, 1492));
 274   ConstantInt *Ci32b = ConstantInt::get(C, APInt(32, 1948));
 275   std::vector<Constant*> ConstVa(2, Ci32a);
 276   std::vector<Constant*> ConstVb(2, Ci32b);
 277   Constant *C2xi32a = ConstantVector::get(ConstVa);
 278   Constant *C2xi32b = ConstantVector::get(ConstVb);
 279
 280   CastInst *PtrVecA = new IntToPtrInst(C2xi32a, V2xi32PTy);
 281   CastInst *PtrVecB = new IntToPtrInst(C2xi32b, V2xi32PTy);
 282
 283   ICmpInst *ICmp0 = new ICmpInst(ICmpInst::ICMP_SGT, PtrVecA, PtrVecB);
 284   ICmpInst *ICmp1 = new ICmpInst(ICmpInst::ICMP_ULT, PtrVecA, PtrVecB);
 285   EXPECT_NE(ICmp0, ICmp1); // suppress warning.
 286
 287   BasicBlock* BB0 = BasicBlock::Create(C);
 288   // Test InsertAtEnd ICmpInst constructor.
 289   ICmpInst *ICmp2 = new ICmpInst(*BB0, ICmpInst::ICMP_SGE, PtrVecA, PtrVecB);
 290   EXPECT_NE(ICmp0, ICmp2); // suppress warning.
 291
 292   GetElementPtrInst *Gep0 = GetElementPtrInst::Create(PtrVecA, C2xi32a);
 293   GetElementPtrInst *Gep1 = GetElementPtrInst::Create(PtrVecA, C2xi32b);
 294   GetElementPtrInst *Gep2 = GetElementPtrInst::Create(PtrVecB, C2xi32a);
 295   GetElementPtrInst *Gep3 = GetElementPtrInst::Create(PtrVecB, C2xi32b);
 296
 297   CastInst *BTC0 = new BitCastInst(Gep0, V2xi8PTy);
 298   CastInst *BTC1 = new BitCastInst(Gep1, V2xi8PTy);
 299   CastInst *BTC2 = new BitCastInst(Gep2, V2xi8PTy);
 300   CastInst *BTC3 = new BitCastInst(Gep3, V2xi8PTy);
 301
 302   Value *S0 = BTC0->stripPointerCasts();
 303   Value *S1 = BTC1->stripPointerCasts();
 304   Value *S2 = BTC2->stripPointerCasts();
 305   Value *S3 = BTC3->stripPointerCasts();
 306
 307   EXPECT_NE(S0, Gep0);
 308   EXPECT_NE(S1, Gep1);
 309   EXPECT_NE(S2, Gep2);
 310   EXPECT_NE(S3, Gep3);
 311
 312   int64_t Offset;
 313   DataLayout TD("e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f3"
 314                 "2:32:32-f64:64:64-v64:64:64-v128:128:128-a:0:64-s:64:64-f80"
 315                 ":128:128-n8:16:32:64-S128");
 316   // Make sure we don't crash
 317   GetPointerBaseWithConstantOffset(Gep0, Offset, &TD);
 318   GetPointerBaseWithConstantOffset(Gep1, Offset, &TD);
 319   GetPointerBaseWithConstantOffset(Gep2, Offset, &TD);
 320   GetPointerBaseWithConstantOffset(Gep3, Offset, &TD);
 321
 322   // Gep of Geps
 323   GetElementPtrInst *GepII0 = GetElementPtrInst::Create(Gep0, C2xi32b);
 324   GetElementPtrInst *GepII1 = GetElementPtrInst::Create(Gep1, C2xi32a);
 325   GetElementPtrInst *GepII2 = GetElementPtrInst::Create(Gep2, C2xi32b);
 326   GetElementPtrInst *GepII3 = GetElementPtrInst::Create(Gep3, C2xi32a);
 327
 328   EXPECT_EQ(GepII0->getNumIndices(), 1u);
 329   EXPECT_EQ(GepII1->getNumIndices(), 1u);
 330   EXPECT_EQ(GepII2->getNumIndices(), 1u);
 331   EXPECT_EQ(GepII3->getNumIndices(), 1u);
 332
 333   EXPECT_FALSE(GepII0->hasAllZeroIndices());
 334   EXPECT_FALSE(GepII1->hasAllZeroIndices());
 335   EXPECT_FALSE(GepII2->hasAllZeroIndices());
 336   EXPECT_FALSE(GepII3->hasAllZeroIndices());
 337
 338   delete GepII0;
 339   delete GepII1;
 340   delete GepII2;
 341   delete GepII3;
 342
 343   delete BTC0;
 344   delete BTC1;
 345   delete BTC2;
 346   delete BTC3;
 347
 348   delete Gep0;
 349   delete Gep1;
 350   delete Gep2;
 351   delete Gep3;
 352
 353   ICmp2->eraseFromParent();
 354   delete BB0;
 355
 356   delete ICmp0;
 357   delete ICmp1;
 358   delete PtrVecA;
 359   delete PtrVecB;
 360 }
 361
 362 TEST(InstructionsTest, FPMathOperator) {
 363   LLVMContext &Context = getGlobalContext();
 364   IRBuilder<> Builder(Context);
 365   MDBuilder MDHelper(Context);
 366   Instruction *I = Builder.CreatePHI(Builder.getDoubleTy(), 0);
 367   MDNode *MD1 = MDHelper.createFPMath(1.0);
 368   Value *V1 = Builder.CreateFAdd(I, I, "", MD1);
 369   EXPECT_TRUE(isa<FPMathOperator>(V1));
 370   FPMathOperator *O1 = cast<FPMathOperator>(V1);
 371   EXPECT_EQ(O1->getFPAccuracy(), 1.0);
 372   delete V1;
 373   delete I;
 374 }
 375
 376
 377 TEST(InstructionsTest, isEliminableCastPair) {
 378   LLVMContext &C(getGlobalContext());
 379
 380   Type* Int16Ty = Type::getInt16Ty(C);
 381   Type* Int32Ty = Type::getInt32Ty(C);
 382   Type* Int64Ty = Type::getInt64Ty(C);
 383   Type* Int64PtrTy = Type::getInt64PtrTy(C);
 384
 385   // Source and destination pointers have same size -> bitcast.
 386   EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::PtrToInt,
 387                                            CastInst::IntToPtr,
 388                                            Int64PtrTy, Int64Ty, Int64PtrTy,
 389                                            Int32Ty, 0, Int32Ty),
 390             CastInst::BitCast);
 391
 392   // Source and destination have unknown sizes, but the same address space and
 393   // the intermediate int is the maximum pointer size -> bitcast
 394   EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::PtrToInt,
 395                                            CastInst::IntToPtr,
 396                                            Int64PtrTy, Int64Ty, Int64PtrTy,
 397                                            0, 0, 0),
 398             CastInst::BitCast);
 399
 400   // Source and destination have unknown sizes, but the same address space and
 401   // the intermediate int is not the maximum pointer size -> nothing
 402   EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::PtrToInt,
 403                                            CastInst::IntToPtr,
 404                                            Int64PtrTy, Int32Ty, Int64PtrTy,
 405                                            0, 0, 0),
 406             0U);
 407
 408   // Middle pointer big enough -> bitcast.
 409   EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
 410                                            CastInst::PtrToInt,
 411                                            Int64Ty, Int64PtrTy, Int64Ty,
 412                                            0, Int64Ty, 0),
 413             CastInst::BitCast);
 414
 415   // Middle pointer too small -> fail.
 416   EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
 417                                            CastInst::PtrToInt,
 418                                            Int64Ty, Int64PtrTy, Int64Ty,
 419                                            0, Int32Ty, 0),
 420             0U);
 421
 422   // Test that we don't eliminate bitcasts between different address spaces,
 423   // or if we don't have available pointer size information.
 424   DataLayout DL("e-p:32:32:32-p1:16:16:16-p2:64:64:64-i1:8:8-i8:8:8-i16:16:16"
 425                 "-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64"
 426                 "-v128:128:128-a:0:64-s:64:64-f80:128:128-n8:16:32:64-S128");
 427
 428   Type* Int64PtrTyAS1 = Type::getInt64PtrTy(C, 1);
 429   Type* Int64PtrTyAS2 = Type::getInt64PtrTy(C, 2);
 430
 431   IntegerType *Int16SizePtr = DL.getIntPtrType(C, 1);
 432   IntegerType *Int64SizePtr = DL.getIntPtrType(C, 2);
 433
 434   // Cannot simplify inttoptr, addrspacecast
 435   EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
 436                                            CastInst::AddrSpaceCast,
 437                                            Int16Ty, Int64PtrTyAS1, Int64PtrTyAS2,
 438                                            0, Int16SizePtr, Int64SizePtr),
 439             0U);
 440
 441   // Cannot simplify addrspacecast, ptrtoint
 442   EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::AddrSpaceCast,
 443                                            CastInst::PtrToInt,
 444                                            Int64PtrTyAS1, Int64PtrTyAS2, Int16Ty,
 445                                            Int64SizePtr, Int16SizePtr, 0),
 446             0U);
 447
 448   // Pass since the bitcast address spaces are the same
 449   EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
 450                                            CastInst::BitCast,
 451                                            Int16Ty, Int64PtrTyAS1, Int64PtrTyAS1,
 452                                            0, 0, 0),
 453             CastInst::IntToPtr);
 454
 455 }
 456
 457 }  // end anonymous namespace
 458 }  // end namespace llvm
 459
 460