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
TEST(InstructionsTest,ReturnInst)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 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.
55 class ModuleWithFunctionTest : public testing::Test {
56 protected:
ModuleWithFunctionTest()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
TEST_F(ModuleWithFunctionTest,CallInst)72 TEST_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
TEST_F(ModuleWithFunctionTest,InvokeInst)87 TEST_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
TEST(InstructionsTest,BranchInst)105 TEST(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
TEST(InstructionsTest,CastInst)171 TEST(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
TEST(InstructionsTest,VectorGep)290 TEST(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
TEST(InstructionsTest,FPMathOperator)391 TEST(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
TEST(InstructionsTest,isEliminableCastPair)406 TEST(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
TEST(InstructionsTest,CloneCall)486 TEST(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