1 //===- llvm/unittest/VMCore/InstructionsTest.cpp - Instructions unit tests ===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/BasicBlock.h"
11 #include "llvm/Constants.h"
12 #include "llvm/DataLayout.h"
13 #include "llvm/DerivedTypes.h"
14 #include "llvm/IRBuilder.h"
15 #include "llvm/Instructions.h"
16 #include "llvm/LLVMContext.h"
17 #include "llvm/MDBuilder.h"
18 #include "llvm/Operator.h"
19 #include "llvm/ADT/STLExtras.h"
20 #include "llvm/Analysis/ValueTracking.h"
21 #include "gtest/gtest.h"
26 TEST(InstructionsTest, ReturnInst) {
27 LLVMContext &C(getGlobalContext());
30 const ReturnInst* r0 = ReturnInst::Create(C);
31 EXPECT_EQ(r0->getNumOperands(), 0U);
32 EXPECT_EQ(r0->op_begin(), r0->op_end());
34 IntegerType* Int1 = IntegerType::get(C, 1);
35 Constant* One = ConstantInt::get(Int1, 1, true);
36 const ReturnInst* r1 = ReturnInst::Create(C, One);
37 EXPECT_EQ(1U, r1->getNumOperands());
38 User::const_op_iterator b(r1->op_begin());
39 EXPECT_NE(r1->op_end(), b);
41 EXPECT_EQ(One, r1->getOperand(0));
43 EXPECT_EQ(r1->op_end(), b);
50 TEST(InstructionsTest, BranchInst) {
51 LLVMContext &C(getGlobalContext());
54 BasicBlock* bb0 = BasicBlock::Create(C);
55 BasicBlock* bb1 = BasicBlock::Create(C);
57 // Mandatory BranchInst
58 const BranchInst* b0 = BranchInst::Create(bb0);
60 EXPECT_TRUE(b0->isUnconditional());
61 EXPECT_FALSE(b0->isConditional());
62 EXPECT_EQ(1U, b0->getNumSuccessors());
65 EXPECT_EQ(1U, b0->getNumOperands());
67 EXPECT_NE(b0->op_begin(), b0->op_end());
68 EXPECT_EQ(b0->op_end(), llvm::next(b0->op_begin()));
70 EXPECT_EQ(b0->op_end(), llvm::next(b0->op_begin()));
72 IntegerType* Int1 = IntegerType::get(C, 1);
73 Constant* One = ConstantInt::get(Int1, 1, true);
75 // Conditional BranchInst
76 BranchInst* b1 = BranchInst::Create(bb0, bb1, One);
78 EXPECT_FALSE(b1->isUnconditional());
79 EXPECT_TRUE(b1->isConditional());
80 EXPECT_EQ(2U, b1->getNumSuccessors());
83 EXPECT_EQ(3U, b1->getNumOperands());
85 User::const_op_iterator b(b1->op_begin());
88 EXPECT_NE(b, b1->op_end());
90 EXPECT_EQ(One, b1->getOperand(0));
91 EXPECT_EQ(One, b1->getCondition());
96 EXPECT_EQ(bb1, b1->getOperand(1));
97 EXPECT_EQ(bb1, b1->getSuccessor(1));
102 EXPECT_EQ(bb0, b1->getOperand(2));
103 EXPECT_EQ(bb0, b1->getSuccessor(0));
106 EXPECT_EQ(b1->op_end(), b);
116 TEST(InstructionsTest, CastInst) {
117 LLVMContext &C(getGlobalContext());
119 Type* Int8Ty = Type::getInt8Ty(C);
120 Type* Int64Ty = Type::getInt64Ty(C);
121 Type* V8x8Ty = VectorType::get(Int8Ty, 8);
122 Type* V8x64Ty = VectorType::get(Int64Ty, 8);
123 Type* X86MMXTy = Type::getX86_MMXTy(C);
125 const Constant* c8 = Constant::getNullValue(V8x8Ty);
126 const Constant* c64 = Constant::getNullValue(V8x64Ty);
128 EXPECT_TRUE(CastInst::isCastable(V8x8Ty, X86MMXTy));
129 EXPECT_TRUE(CastInst::isCastable(X86MMXTy, V8x8Ty));
130 EXPECT_FALSE(CastInst::isCastable(Int64Ty, X86MMXTy));
131 EXPECT_TRUE(CastInst::isCastable(V8x64Ty, V8x8Ty));
132 EXPECT_TRUE(CastInst::isCastable(V8x8Ty, V8x64Ty));
133 EXPECT_EQ(CastInst::Trunc, CastInst::getCastOpcode(c64, true, V8x8Ty, true));
134 EXPECT_EQ(CastInst::SExt, CastInst::getCastOpcode(c8, true, V8x64Ty, true));
139 TEST(InstructionsTest, VectorGep) {
140 LLVMContext &C(getGlobalContext());
143 PointerType *Ptri8Ty = PointerType::get(IntegerType::get(C, 8), 0);
144 PointerType *Ptri32Ty = PointerType::get(IntegerType::get(C, 8), 0);
146 VectorType *V2xi8PTy = VectorType::get(Ptri8Ty, 2);
147 VectorType *V2xi32PTy = VectorType::get(Ptri32Ty, 2);
149 // Test different aspects of the vector-of-pointers type
150 // and GEPs which use this type.
151 ConstantInt *Ci32a = ConstantInt::get(C, APInt(32, 1492));
152 ConstantInt *Ci32b = ConstantInt::get(C, APInt(32, 1948));
153 std::vector<Constant*> ConstVa(2, Ci32a);
154 std::vector<Constant*> ConstVb(2, Ci32b);
155 Constant *C2xi32a = ConstantVector::get(ConstVa);
156 Constant *C2xi32b = ConstantVector::get(ConstVb);
158 CastInst *PtrVecA = new IntToPtrInst(C2xi32a, V2xi32PTy);
159 CastInst *PtrVecB = new IntToPtrInst(C2xi32b, V2xi32PTy);
161 ICmpInst *ICmp0 = new ICmpInst(ICmpInst::ICMP_SGT, PtrVecA, PtrVecB);
162 ICmpInst *ICmp1 = new ICmpInst(ICmpInst::ICMP_ULT, PtrVecA, PtrVecB);
163 EXPECT_NE(ICmp0, ICmp1); // suppress warning.
165 GetElementPtrInst *Gep0 = GetElementPtrInst::Create(PtrVecA, C2xi32a);
166 GetElementPtrInst *Gep1 = GetElementPtrInst::Create(PtrVecA, C2xi32b);
167 GetElementPtrInst *Gep2 = GetElementPtrInst::Create(PtrVecB, C2xi32a);
168 GetElementPtrInst *Gep3 = GetElementPtrInst::Create(PtrVecB, C2xi32b);
170 CastInst *BTC0 = new BitCastInst(Gep0, V2xi8PTy);
171 CastInst *BTC1 = new BitCastInst(Gep1, V2xi8PTy);
172 CastInst *BTC2 = new BitCastInst(Gep2, V2xi8PTy);
173 CastInst *BTC3 = new BitCastInst(Gep3, V2xi8PTy);
175 Value *S0 = BTC0->stripPointerCasts();
176 Value *S1 = BTC1->stripPointerCasts();
177 Value *S2 = BTC2->stripPointerCasts();
178 Value *S3 = BTC3->stripPointerCasts();
186 DataLayout TD("e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f3"
187 "2:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80"
188 ":128:128-n8:16:32:64-S128");
189 // Make sure we don't crash
190 GetPointerBaseWithConstantOffset(Gep0, Offset, TD);
191 GetPointerBaseWithConstantOffset(Gep1, Offset, TD);
192 GetPointerBaseWithConstantOffset(Gep2, Offset, TD);
193 GetPointerBaseWithConstantOffset(Gep3, Offset, TD);
196 GetElementPtrInst *GepII0 = GetElementPtrInst::Create(Gep0, C2xi32b);
197 GetElementPtrInst *GepII1 = GetElementPtrInst::Create(Gep1, C2xi32a);
198 GetElementPtrInst *GepII2 = GetElementPtrInst::Create(Gep2, C2xi32b);
199 GetElementPtrInst *GepII3 = GetElementPtrInst::Create(Gep3, C2xi32a);
201 EXPECT_EQ(GepII0->getNumIndices(), 1u);
202 EXPECT_EQ(GepII1->getNumIndices(), 1u);
203 EXPECT_EQ(GepII2->getNumIndices(), 1u);
204 EXPECT_EQ(GepII3->getNumIndices(), 1u);
206 EXPECT_FALSE(GepII0->hasAllZeroIndices());
207 EXPECT_FALSE(GepII1->hasAllZeroIndices());
208 EXPECT_FALSE(GepII2->hasAllZeroIndices());
209 EXPECT_FALSE(GepII3->hasAllZeroIndices());
232 TEST(InstructionsTest, FPMathOperator) {
233 LLVMContext &Context = getGlobalContext();
234 IRBuilder<> Builder(Context);
235 MDBuilder MDHelper(Context);
236 Instruction *I = Builder.CreatePHI(Builder.getDoubleTy(), 0);
237 MDNode *MD1 = MDHelper.createFPMath(1.0);
238 Value *V1 = Builder.CreateFAdd(I, I, "", MD1);
239 EXPECT_TRUE(isa<FPMathOperator>(V1));
240 FPMathOperator *O1 = cast<FPMathOperator>(V1);
241 EXPECT_EQ(O1->getFPAccuracy(), 1.0);
246 } // end anonymous namespace
247 } // end namespace llvm