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
26namespace llvm {
27namespace {
28
29TEST(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 fixture that provides a module and a single function within it. Useful
54// for tests that need to refer to the function in some way.
55class ModuleWithFunctionTest : public testing::Test {
56protected:
57  ModuleWithFunctionTest() : M(new Module("MyModule", Ctx)) {
58    FArgTypes.push_back(Type::getInt8Ty(Ctx));
59    FArgTypes.push_back(Type::getInt32Ty(Ctx));
60    FArgTypes.push_back(Type::getInt64Ty(Ctx));
61    FunctionType *FTy =
62        FunctionType::get(Type::getVoidTy(Ctx), FArgTypes, false);
63    F = Function::Create(FTy, Function::ExternalLinkage, "", M.get());
64  }
65
66  LLVMContext Ctx;
67  std::unique_ptr<Module> M;
68  SmallVector<Type *, 3> FArgTypes;
69  Function *F;
70};
71
72TEST_F(ModuleWithFunctionTest, CallInst) {
73  Value *Args[] = {ConstantInt::get(Type::getInt8Ty(Ctx), 20),
74                   ConstantInt::get(Type::getInt32Ty(Ctx), 9999),
75                   ConstantInt::get(Type::getInt64Ty(Ctx), 42)};
76  std::unique_ptr<CallInst> Call(CallInst::Create(F, Args));
77
78  // Make sure iteration over a call's arguments works as expected.
79  unsigned Idx = 0;
80  for (Value *Arg : Call->arg_operands()) {
81    EXPECT_EQ(FArgTypes[Idx], Arg->getType());
82    EXPECT_EQ(Call->getArgOperand(Idx)->getType(), Arg->getType());
83    Idx++;
84  }
85}
86
87TEST_F(ModuleWithFunctionTest, InvokeInst) {
88  BasicBlock *BB1 = BasicBlock::Create(Ctx, "", F);
89  BasicBlock *BB2 = BasicBlock::Create(Ctx, "", F);
90
91  Value *Args[] = {ConstantInt::get(Type::getInt8Ty(Ctx), 20),
92                   ConstantInt::get(Type::getInt32Ty(Ctx), 9999),
93                   ConstantInt::get(Type::getInt64Ty(Ctx), 42)};
94  std::unique_ptr<InvokeInst> Invoke(InvokeInst::Create(F, BB1, BB2, Args));
95
96  // Make sure iteration over invoke's arguments works as expected.
97  unsigned Idx = 0;
98  for (Value *Arg : Invoke->arg_operands()) {
99    EXPECT_EQ(FArgTypes[Idx], Arg->getType());
100    EXPECT_EQ(Invoke->getArgOperand(Idx)->getType(), Arg->getType());
101    Idx++;
102  }
103}
104
105TEST(InstructionsTest, BranchInst) {
106  LLVMContext &C(getGlobalContext());
107
108  // Make a BasicBlocks
109  BasicBlock* bb0 = BasicBlock::Create(C);
110  BasicBlock* bb1 = BasicBlock::Create(C);
111
112  // Mandatory BranchInst
113  const BranchInst* b0 = BranchInst::Create(bb0);
114
115  EXPECT_TRUE(b0->isUnconditional());
116  EXPECT_FALSE(b0->isConditional());
117  EXPECT_EQ(1U, b0->getNumSuccessors());
118
119  // check num operands
120  EXPECT_EQ(1U, b0->getNumOperands());
121
122  EXPECT_NE(b0->op_begin(), b0->op_end());
123  EXPECT_EQ(b0->op_end(), std::next(b0->op_begin()));
124
125  EXPECT_EQ(b0->op_end(), std::next(b0->op_begin()));
126
127  IntegerType* Int1 = IntegerType::get(C, 1);
128  Constant* One = ConstantInt::get(Int1, 1, true);
129
130  // Conditional BranchInst
131  BranchInst* b1 = BranchInst::Create(bb0, bb1, One);
132
133  EXPECT_FALSE(b1->isUnconditional());
134  EXPECT_TRUE(b1->isConditional());
135  EXPECT_EQ(2U, b1->getNumSuccessors());
136
137  // check num operands
138  EXPECT_EQ(3U, b1->getNumOperands());
139
140  User::const_op_iterator b(b1->op_begin());
141
142  // check COND
143  EXPECT_NE(b, b1->op_end());
144  EXPECT_EQ(One, *b);
145  EXPECT_EQ(One, b1->getOperand(0));
146  EXPECT_EQ(One, b1->getCondition());
147  ++b;
148
149  // check ELSE
150  EXPECT_EQ(bb1, *b);
151  EXPECT_EQ(bb1, b1->getOperand(1));
152  EXPECT_EQ(bb1, b1->getSuccessor(1));
153  ++b;
154
155  // check THEN
156  EXPECT_EQ(bb0, *b);
157  EXPECT_EQ(bb0, b1->getOperand(2));
158  EXPECT_EQ(bb0, b1->getSuccessor(0));
159  ++b;
160
161  EXPECT_EQ(b1->op_end(), b);
162
163  // clean up
164  delete b0;
165  delete b1;
166
167  delete bb0;
168  delete bb1;
169}
170
171TEST(InstructionsTest, CastInst) {
172  LLVMContext &C(getGlobalContext());
173
174  Type *Int8Ty = Type::getInt8Ty(C);
175  Type *Int16Ty = Type::getInt16Ty(C);
176  Type *Int32Ty = Type::getInt32Ty(C);
177  Type *Int64Ty = Type::getInt64Ty(C);
178  Type *V8x8Ty = VectorType::get(Int8Ty, 8);
179  Type *V8x64Ty = VectorType::get(Int64Ty, 8);
180  Type *X86MMXTy = Type::getX86_MMXTy(C);
181
182  Type *HalfTy = Type::getHalfTy(C);
183  Type *FloatTy = Type::getFloatTy(C);
184  Type *DoubleTy = Type::getDoubleTy(C);
185
186  Type *V2Int32Ty = VectorType::get(Int32Ty, 2);
187  Type *V2Int64Ty = VectorType::get(Int64Ty, 2);
188  Type *V4Int16Ty = VectorType::get(Int16Ty, 4);
189
190  Type *Int32PtrTy = PointerType::get(Int32Ty, 0);
191  Type *Int64PtrTy = PointerType::get(Int64Ty, 0);
192
193  Type *Int32PtrAS1Ty = PointerType::get(Int32Ty, 1);
194  Type *Int64PtrAS1Ty = PointerType::get(Int64Ty, 1);
195
196  Type *V2Int32PtrAS1Ty = VectorType::get(Int32PtrAS1Ty, 2);
197  Type *V2Int64PtrAS1Ty = VectorType::get(Int64PtrAS1Ty, 2);
198  Type *V4Int32PtrAS1Ty = VectorType::get(Int32PtrAS1Ty, 4);
199  Type *V4Int64PtrAS1Ty = VectorType::get(Int64PtrAS1Ty, 4);
200
201  Type *V2Int64PtrTy = VectorType::get(Int64PtrTy, 2);
202  Type *V2Int32PtrTy = VectorType::get(Int32PtrTy, 2);
203  Type *V4Int32PtrTy = VectorType::get(Int32PtrTy, 4);
204
205  const Constant* c8 = Constant::getNullValue(V8x8Ty);
206  const Constant* c64 = Constant::getNullValue(V8x64Ty);
207
208  const Constant *v2ptr32 = Constant::getNullValue(V2Int32PtrTy);
209
210  EXPECT_TRUE(CastInst::isCastable(V8x8Ty, X86MMXTy));
211  EXPECT_TRUE(CastInst::isCastable(X86MMXTy, V8x8Ty));
212  EXPECT_FALSE(CastInst::isCastable(Int64Ty, X86MMXTy));
213  EXPECT_TRUE(CastInst::isCastable(V8x64Ty, V8x8Ty));
214  EXPECT_TRUE(CastInst::isCastable(V8x8Ty, V8x64Ty));
215  EXPECT_EQ(CastInst::Trunc, CastInst::getCastOpcode(c64, true, V8x8Ty, true));
216  EXPECT_EQ(CastInst::SExt, CastInst::getCastOpcode(c8, true, V8x64Ty, true));
217
218  EXPECT_FALSE(CastInst::isBitCastable(V8x8Ty, X86MMXTy));
219  EXPECT_FALSE(CastInst::isBitCastable(X86MMXTy, V8x8Ty));
220  EXPECT_FALSE(CastInst::isBitCastable(Int64Ty, X86MMXTy));
221  EXPECT_FALSE(CastInst::isBitCastable(V8x64Ty, V8x8Ty));
222  EXPECT_FALSE(CastInst::isBitCastable(V8x8Ty, V8x64Ty));
223
224  // Check address space casts are rejected since we don't know the sizes here
225  EXPECT_FALSE(CastInst::isBitCastable(Int32PtrTy, Int32PtrAS1Ty));
226  EXPECT_FALSE(CastInst::isBitCastable(Int32PtrAS1Ty, Int32PtrTy));
227  EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrTy, V2Int32PtrAS1Ty));
228  EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V2Int32PtrTy));
229  EXPECT_TRUE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V2Int64PtrAS1Ty));
230  EXPECT_TRUE(CastInst::isCastable(V2Int32PtrAS1Ty, V2Int32PtrTy));
231  EXPECT_EQ(CastInst::AddrSpaceCast, CastInst::getCastOpcode(v2ptr32, true,
232                                                             V2Int32PtrAS1Ty,
233                                                             true));
234
235  // Test mismatched number of elements for pointers
236  EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V4Int64PtrAS1Ty));
237  EXPECT_FALSE(CastInst::isBitCastable(V4Int64PtrAS1Ty, V2Int32PtrAS1Ty));
238  EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrAS1Ty, V4Int32PtrAS1Ty));
239  EXPECT_FALSE(CastInst::isBitCastable(Int32PtrTy, V2Int32PtrTy));
240  EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrTy, Int32PtrTy));
241
242  EXPECT_TRUE(CastInst::isBitCastable(Int32PtrTy, Int64PtrTy));
243  EXPECT_FALSE(CastInst::isBitCastable(DoubleTy, FloatTy));
244  EXPECT_FALSE(CastInst::isBitCastable(FloatTy, DoubleTy));
245  EXPECT_TRUE(CastInst::isBitCastable(FloatTy, FloatTy));
246  EXPECT_TRUE(CastInst::isBitCastable(FloatTy, FloatTy));
247  EXPECT_TRUE(CastInst::isBitCastable(FloatTy, Int32Ty));
248  EXPECT_TRUE(CastInst::isBitCastable(Int16Ty, HalfTy));
249  EXPECT_TRUE(CastInst::isBitCastable(Int32Ty, FloatTy));
250  EXPECT_TRUE(CastInst::isBitCastable(V2Int32Ty, Int64Ty));
251
252  EXPECT_TRUE(CastInst::isBitCastable(V2Int32Ty, V4Int16Ty));
253  EXPECT_FALSE(CastInst::isBitCastable(Int32Ty, Int64Ty));
254  EXPECT_FALSE(CastInst::isBitCastable(Int64Ty, Int32Ty));
255
256  EXPECT_FALSE(CastInst::isBitCastable(V2Int32PtrTy, Int64Ty));
257  EXPECT_FALSE(CastInst::isBitCastable(Int64Ty, V2Int32PtrTy));
258  EXPECT_TRUE(CastInst::isBitCastable(V2Int64PtrTy, V2Int32PtrTy));
259  EXPECT_TRUE(CastInst::isBitCastable(V2Int32PtrTy, V2Int64PtrTy));
260  EXPECT_FALSE(CastInst::isBitCastable(V2Int32Ty, V2Int64Ty));
261  EXPECT_FALSE(CastInst::isBitCastable(V2Int64Ty, V2Int32Ty));
262
263
264  EXPECT_FALSE(CastInst::castIsValid(Instruction::BitCast,
265                                     Constant::getNullValue(V4Int32PtrTy),
266                                     V2Int32PtrTy));
267  EXPECT_FALSE(CastInst::castIsValid(Instruction::BitCast,
268                                     Constant::getNullValue(V2Int32PtrTy),
269                                     V4Int32PtrTy));
270
271  EXPECT_FALSE(CastInst::castIsValid(Instruction::AddrSpaceCast,
272                                     Constant::getNullValue(V4Int32PtrAS1Ty),
273                                     V2Int32PtrTy));
274  EXPECT_FALSE(CastInst::castIsValid(Instruction::AddrSpaceCast,
275                                     Constant::getNullValue(V2Int32PtrTy),
276                                     V4Int32PtrAS1Ty));
277
278
279  // Check that assertion is not hit when creating a cast with a vector of
280  // pointers
281  // First form
282  BasicBlock *BB = BasicBlock::Create(C);
283  Constant *NullV2I32Ptr = Constant::getNullValue(V2Int32PtrTy);
284  CastInst::CreatePointerCast(NullV2I32Ptr, V2Int32Ty, "foo", BB);
285
286  // Second form
287  CastInst::CreatePointerCast(NullV2I32Ptr, V2Int32Ty);
288}
289
290TEST(InstructionsTest, VectorGep) {
291  LLVMContext &C(getGlobalContext());
292
293  // Type Definitions
294  PointerType *Ptri8Ty = PointerType::get(IntegerType::get(C, 8), 0);
295  PointerType *Ptri32Ty = PointerType::get(IntegerType::get(C, 32), 0);
296
297  VectorType *V2xi8PTy = VectorType::get(Ptri8Ty, 2);
298  VectorType *V2xi32PTy = VectorType::get(Ptri32Ty, 2);
299
300  // Test different aspects of the vector-of-pointers type
301  // and GEPs which use this type.
302  ConstantInt *Ci32a = ConstantInt::get(C, APInt(32, 1492));
303  ConstantInt *Ci32b = ConstantInt::get(C, APInt(32, 1948));
304  std::vector<Constant*> ConstVa(2, Ci32a);
305  std::vector<Constant*> ConstVb(2, Ci32b);
306  Constant *C2xi32a = ConstantVector::get(ConstVa);
307  Constant *C2xi32b = ConstantVector::get(ConstVb);
308
309  CastInst *PtrVecA = new IntToPtrInst(C2xi32a, V2xi32PTy);
310  CastInst *PtrVecB = new IntToPtrInst(C2xi32b, V2xi32PTy);
311
312  ICmpInst *ICmp0 = new ICmpInst(ICmpInst::ICMP_SGT, PtrVecA, PtrVecB);
313  ICmpInst *ICmp1 = new ICmpInst(ICmpInst::ICMP_ULT, PtrVecA, PtrVecB);
314  EXPECT_NE(ICmp0, ICmp1); // suppress warning.
315
316  BasicBlock* BB0 = BasicBlock::Create(C);
317  // Test InsertAtEnd ICmpInst constructor.
318  ICmpInst *ICmp2 = new ICmpInst(*BB0, ICmpInst::ICMP_SGE, PtrVecA, PtrVecB);
319  EXPECT_NE(ICmp0, ICmp2); // suppress warning.
320
321  GetElementPtrInst *Gep0 = GetElementPtrInst::Create(PtrVecA, C2xi32a);
322  GetElementPtrInst *Gep1 = GetElementPtrInst::Create(PtrVecA, C2xi32b);
323  GetElementPtrInst *Gep2 = GetElementPtrInst::Create(PtrVecB, C2xi32a);
324  GetElementPtrInst *Gep3 = GetElementPtrInst::Create(PtrVecB, C2xi32b);
325
326  CastInst *BTC0 = new BitCastInst(Gep0, V2xi8PTy);
327  CastInst *BTC1 = new BitCastInst(Gep1, V2xi8PTy);
328  CastInst *BTC2 = new BitCastInst(Gep2, V2xi8PTy);
329  CastInst *BTC3 = new BitCastInst(Gep3, V2xi8PTy);
330
331  Value *S0 = BTC0->stripPointerCasts();
332  Value *S1 = BTC1->stripPointerCasts();
333  Value *S2 = BTC2->stripPointerCasts();
334  Value *S3 = BTC3->stripPointerCasts();
335
336  EXPECT_NE(S0, Gep0);
337  EXPECT_NE(S1, Gep1);
338  EXPECT_NE(S2, Gep2);
339  EXPECT_NE(S3, Gep3);
340
341  int64_t Offset;
342  DataLayout TD("e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f3"
343                "2:32:32-f64:64:64-v64:64:64-v128:128:128-a:0:64-s:64:64-f80"
344                ":128:128-n8:16:32:64-S128");
345  // Make sure we don't crash
346  GetPointerBaseWithConstantOffset(Gep0, Offset, &TD);
347  GetPointerBaseWithConstantOffset(Gep1, Offset, &TD);
348  GetPointerBaseWithConstantOffset(Gep2, Offset, &TD);
349  GetPointerBaseWithConstantOffset(Gep3, Offset, &TD);
350
351  // Gep of Geps
352  GetElementPtrInst *GepII0 = GetElementPtrInst::Create(Gep0, C2xi32b);
353  GetElementPtrInst *GepII1 = GetElementPtrInst::Create(Gep1, C2xi32a);
354  GetElementPtrInst *GepII2 = GetElementPtrInst::Create(Gep2, C2xi32b);
355  GetElementPtrInst *GepII3 = GetElementPtrInst::Create(Gep3, C2xi32a);
356
357  EXPECT_EQ(GepII0->getNumIndices(), 1u);
358  EXPECT_EQ(GepII1->getNumIndices(), 1u);
359  EXPECT_EQ(GepII2->getNumIndices(), 1u);
360  EXPECT_EQ(GepII3->getNumIndices(), 1u);
361
362  EXPECT_FALSE(GepII0->hasAllZeroIndices());
363  EXPECT_FALSE(GepII1->hasAllZeroIndices());
364  EXPECT_FALSE(GepII2->hasAllZeroIndices());
365  EXPECT_FALSE(GepII3->hasAllZeroIndices());
366
367  delete GepII0;
368  delete GepII1;
369  delete GepII2;
370  delete GepII3;
371
372  delete BTC0;
373  delete BTC1;
374  delete BTC2;
375  delete BTC3;
376
377  delete Gep0;
378  delete Gep1;
379  delete Gep2;
380  delete Gep3;
381
382  ICmp2->eraseFromParent();
383  delete BB0;
384
385  delete ICmp0;
386  delete ICmp1;
387  delete PtrVecA;
388  delete PtrVecB;
389}
390
391TEST(InstructionsTest, FPMathOperator) {
392  LLVMContext &Context = getGlobalContext();
393  IRBuilder<> Builder(Context);
394  MDBuilder MDHelper(Context);
395  Instruction *I = Builder.CreatePHI(Builder.getDoubleTy(), 0);
396  MDNode *MD1 = MDHelper.createFPMath(1.0);
397  Value *V1 = Builder.CreateFAdd(I, I, "", MD1);
398  EXPECT_TRUE(isa<FPMathOperator>(V1));
399  FPMathOperator *O1 = cast<FPMathOperator>(V1);
400  EXPECT_EQ(O1->getFPAccuracy(), 1.0);
401  delete V1;
402  delete I;
403}
404
405
406TEST(InstructionsTest, isEliminableCastPair) {
407  LLVMContext &C(getGlobalContext());
408
409  Type* Int16Ty = Type::getInt16Ty(C);
410  Type* Int32Ty = Type::getInt32Ty(C);
411  Type* Int64Ty = Type::getInt64Ty(C);
412  Type* Int64PtrTy = Type::getInt64PtrTy(C);
413
414  // Source and destination pointers have same size -> bitcast.
415  EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::PtrToInt,
416                                           CastInst::IntToPtr,
417                                           Int64PtrTy, Int64Ty, Int64PtrTy,
418                                           Int32Ty, nullptr, Int32Ty),
419            CastInst::BitCast);
420
421  // Source and destination have unknown sizes, but the same address space and
422  // the intermediate int is the maximum pointer size -> bitcast
423  EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::PtrToInt,
424                                           CastInst::IntToPtr,
425                                           Int64PtrTy, Int64Ty, Int64PtrTy,
426                                           nullptr, nullptr, nullptr),
427            CastInst::BitCast);
428
429  // Source and destination have unknown sizes, but the same address space and
430  // the intermediate int is not the maximum pointer size -> nothing
431  EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::PtrToInt,
432                                           CastInst::IntToPtr,
433                                           Int64PtrTy, Int32Ty, Int64PtrTy,
434                                           nullptr, nullptr, nullptr),
435            0U);
436
437  // Middle pointer big enough -> bitcast.
438  EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
439                                           CastInst::PtrToInt,
440                                           Int64Ty, Int64PtrTy, Int64Ty,
441                                           nullptr, Int64Ty, nullptr),
442            CastInst::BitCast);
443
444  // Middle pointer too small -> fail.
445  EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
446                                           CastInst::PtrToInt,
447                                           Int64Ty, Int64PtrTy, Int64Ty,
448                                           nullptr, Int32Ty, nullptr),
449            0U);
450
451  // Test that we don't eliminate bitcasts between different address spaces,
452  // or if we don't have available pointer size information.
453  DataLayout DL("e-p:32:32:32-p1:16:16:16-p2:64:64:64-i1:8:8-i8:8:8-i16:16:16"
454                "-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64"
455                "-v128:128:128-a:0:64-s:64:64-f80:128:128-n8:16:32:64-S128");
456
457  Type* Int64PtrTyAS1 = Type::getInt64PtrTy(C, 1);
458  Type* Int64PtrTyAS2 = Type::getInt64PtrTy(C, 2);
459
460  IntegerType *Int16SizePtr = DL.getIntPtrType(C, 1);
461  IntegerType *Int64SizePtr = DL.getIntPtrType(C, 2);
462
463  // Cannot simplify inttoptr, addrspacecast
464  EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
465                                           CastInst::AddrSpaceCast,
466                                           Int16Ty, Int64PtrTyAS1, Int64PtrTyAS2,
467                                           nullptr, Int16SizePtr, Int64SizePtr),
468            0U);
469
470  // Cannot simplify addrspacecast, ptrtoint
471  EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::AddrSpaceCast,
472                                           CastInst::PtrToInt,
473                                           Int64PtrTyAS1, Int64PtrTyAS2, Int16Ty,
474                                           Int64SizePtr, Int16SizePtr, nullptr),
475            0U);
476
477  // Pass since the bitcast address spaces are the same
478  EXPECT_EQ(CastInst::isEliminableCastPair(CastInst::IntToPtr,
479                                           CastInst::BitCast,
480                                           Int16Ty, Int64PtrTyAS1, Int64PtrTyAS1,
481                                           nullptr, nullptr, nullptr),
482            CastInst::IntToPtr);
483
484}
485
486TEST(InstructionsTest, CloneCall) {
487  LLVMContext &C(getGlobalContext());
488  Type *Int32Ty = Type::getInt32Ty(C);
489  Type *ArgTys[] = {Int32Ty, Int32Ty, Int32Ty};
490  Type *FnTy = FunctionType::get(Int32Ty, ArgTys, /*isVarArg=*/false);
491  Value *Callee = Constant::getNullValue(FnTy->getPointerTo());
492  Value *Args[] = {
493    ConstantInt::get(Int32Ty, 1),
494    ConstantInt::get(Int32Ty, 2),
495    ConstantInt::get(Int32Ty, 3)
496  };
497  std::unique_ptr<CallInst> Call(CallInst::Create(Callee, Args, "result"));
498
499  // Test cloning the tail call kind.
500  CallInst::TailCallKind Kinds[] = {CallInst::TCK_None, CallInst::TCK_Tail,
501                                    CallInst::TCK_MustTail};
502  for (CallInst::TailCallKind TCK : Kinds) {
503    Call->setTailCallKind(TCK);
504    std::unique_ptr<CallInst> Clone(cast<CallInst>(Call->clone()));
505    EXPECT_EQ(Call->getTailCallKind(), Clone->getTailCallKind());
506  }
507  Call->setTailCallKind(CallInst::TCK_None);
508
509  // Test cloning an attribute.
510  {
511    AttrBuilder AB;
512    AB.addAttribute(Attribute::ReadOnly);
513    Call->setAttributes(AttributeSet::get(C, AttributeSet::FunctionIndex, AB));
514    std::unique_ptr<CallInst> Clone(cast<CallInst>(Call->clone()));
515    EXPECT_TRUE(Clone->onlyReadsMemory());
516  }
517}
518
519}  // end anonymous namespace
520}  // end namespace llvm
521
522
523