1 //===- llvm/unittest/IR/IRBuilderTest.cpp - IRBuilder 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/IRBuilder.h" 11 #include "llvm/ADT/OwningPtr.h" 12 #include "llvm/IR/BasicBlock.h" 13 #include "llvm/IR/DataLayout.h" 14 #include "llvm/IR/Function.h" 15 #include "llvm/IR/IntrinsicInst.h" 16 #include "llvm/IR/LLVMContext.h" 17 #include "llvm/IR/MDBuilder.h" 18 #include "llvm/IR/Module.h" 19 #include "gtest/gtest.h" 20 21 using namespace llvm; 22 23 namespace { 24 25 class IRBuilderTest : public testing::Test { 26 protected: 27 virtual void SetUp() { 28 M.reset(new Module("MyModule", getGlobalContext())); 29 FunctionType *FTy = FunctionType::get(Type::getVoidTy(getGlobalContext()), 30 /*isVarArg=*/false); 31 F = Function::Create(FTy, Function::ExternalLinkage, "", M.get()); 32 BB = BasicBlock::Create(getGlobalContext(), "", F); 33 GV = new GlobalVariable(*M, Type::getFloatTy(getGlobalContext()), true, 34 GlobalValue::ExternalLinkage, 0); 35 } 36 37 virtual void TearDown() { 38 BB = 0; 39 M.reset(); 40 } 41 42 OwningPtr<Module> M; 43 Function *F; 44 BasicBlock *BB; 45 GlobalVariable *GV; 46 }; 47 48 TEST_F(IRBuilderTest, Lifetime) { 49 IRBuilder<> Builder(BB); 50 AllocaInst *Var1 = Builder.CreateAlloca(Builder.getInt8Ty()); 51 AllocaInst *Var2 = Builder.CreateAlloca(Builder.getInt32Ty()); 52 AllocaInst *Var3 = Builder.CreateAlloca(Builder.getInt8Ty(), 53 Builder.getInt32(123)); 54 55 CallInst *Start1 = Builder.CreateLifetimeStart(Var1); 56 CallInst *Start2 = Builder.CreateLifetimeStart(Var2); 57 CallInst *Start3 = Builder.CreateLifetimeStart(Var3, Builder.getInt64(100)); 58 59 EXPECT_EQ(Start1->getArgOperand(0), Builder.getInt64(-1)); 60 EXPECT_EQ(Start2->getArgOperand(0), Builder.getInt64(-1)); 61 EXPECT_EQ(Start3->getArgOperand(0), Builder.getInt64(100)); 62 63 EXPECT_EQ(Start1->getArgOperand(1), Var1); 64 EXPECT_NE(Start2->getArgOperand(1), Var2); 65 EXPECT_EQ(Start3->getArgOperand(1), Var3); 66 67 Value *End1 = Builder.CreateLifetimeEnd(Var1); 68 Builder.CreateLifetimeEnd(Var2); 69 Builder.CreateLifetimeEnd(Var3); 70 71 IntrinsicInst *II_Start1 = dyn_cast<IntrinsicInst>(Start1); 72 IntrinsicInst *II_End1 = dyn_cast<IntrinsicInst>(End1); 73 ASSERT_TRUE(II_Start1 != NULL); 74 EXPECT_EQ(II_Start1->getIntrinsicID(), Intrinsic::lifetime_start); 75 ASSERT_TRUE(II_End1 != NULL); 76 EXPECT_EQ(II_End1->getIntrinsicID(), Intrinsic::lifetime_end); 77 } 78 79 TEST_F(IRBuilderTest, CreateCondBr) { 80 IRBuilder<> Builder(BB); 81 BasicBlock *TBB = BasicBlock::Create(getGlobalContext(), "", F); 82 BasicBlock *FBB = BasicBlock::Create(getGlobalContext(), "", F); 83 84 BranchInst *BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB); 85 TerminatorInst *TI = BB->getTerminator(); 86 EXPECT_EQ(BI, TI); 87 EXPECT_EQ(2u, TI->getNumSuccessors()); 88 EXPECT_EQ(TBB, TI->getSuccessor(0)); 89 EXPECT_EQ(FBB, TI->getSuccessor(1)); 90 91 BI->eraseFromParent(); 92 MDNode *Weights = MDBuilder(getGlobalContext()).createBranchWeights(42, 13); 93 BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB, Weights); 94 TI = BB->getTerminator(); 95 EXPECT_EQ(BI, TI); 96 EXPECT_EQ(2u, TI->getNumSuccessors()); 97 EXPECT_EQ(TBB, TI->getSuccessor(0)); 98 EXPECT_EQ(FBB, TI->getSuccessor(1)); 99 EXPECT_EQ(Weights, TI->getMetadata(LLVMContext::MD_prof)); 100 } 101 102 TEST_F(IRBuilderTest, LandingPadName) { 103 IRBuilder<> Builder(BB); 104 LandingPadInst *LP = Builder.CreateLandingPad(Builder.getInt32Ty(), 105 Builder.getInt32(0), 0, "LP"); 106 EXPECT_EQ(LP->getName(), "LP"); 107 } 108 109 TEST_F(IRBuilderTest, GetIntTy) { 110 IRBuilder<> Builder(BB); 111 IntegerType *Ty1 = Builder.getInt1Ty(); 112 EXPECT_EQ(Ty1, IntegerType::get(getGlobalContext(), 1)); 113 114 DataLayout* DL = new DataLayout(M.get()); 115 IntegerType *IntPtrTy = Builder.getIntPtrTy(DL); 116 unsigned IntPtrBitSize = DL->getPointerSizeInBits(0); 117 EXPECT_EQ(IntPtrTy, IntegerType::get(getGlobalContext(), IntPtrBitSize)); 118 delete DL; 119 } 120 121 TEST_F(IRBuilderTest, FastMathFlags) { 122 IRBuilder<> Builder(BB); 123 Value *F; 124 Instruction *FDiv, *FAdd; 125 126 F = Builder.CreateLoad(GV); 127 F = Builder.CreateFAdd(F, F); 128 129 EXPECT_FALSE(Builder.getFastMathFlags().any()); 130 ASSERT_TRUE(isa<Instruction>(F)); 131 FAdd = cast<Instruction>(F); 132 EXPECT_FALSE(FAdd->hasNoNaNs()); 133 134 FastMathFlags FMF; 135 Builder.SetFastMathFlags(FMF); 136 137 F = Builder.CreateFAdd(F, F); 138 EXPECT_FALSE(Builder.getFastMathFlags().any()); 139 140 FMF.setUnsafeAlgebra(); 141 Builder.SetFastMathFlags(FMF); 142 143 F = Builder.CreateFAdd(F, F); 144 EXPECT_TRUE(Builder.getFastMathFlags().any()); 145 ASSERT_TRUE(isa<Instruction>(F)); 146 FAdd = cast<Instruction>(F); 147 EXPECT_TRUE(FAdd->hasNoNaNs()); 148 149 F = Builder.CreateFDiv(F, F); 150 EXPECT_TRUE(Builder.getFastMathFlags().any()); 151 EXPECT_TRUE(Builder.getFastMathFlags().UnsafeAlgebra); 152 ASSERT_TRUE(isa<Instruction>(F)); 153 FDiv = cast<Instruction>(F); 154 EXPECT_TRUE(FDiv->hasAllowReciprocal()); 155 156 Builder.clearFastMathFlags(); 157 158 F = Builder.CreateFDiv(F, F); 159 ASSERT_TRUE(isa<Instruction>(F)); 160 FDiv = cast<Instruction>(F); 161 EXPECT_FALSE(FDiv->hasAllowReciprocal()); 162 163 FMF.clear(); 164 FMF.setAllowReciprocal(); 165 Builder.SetFastMathFlags(FMF); 166 167 F = Builder.CreateFDiv(F, F); 168 EXPECT_TRUE(Builder.getFastMathFlags().any()); 169 EXPECT_TRUE(Builder.getFastMathFlags().AllowReciprocal); 170 ASSERT_TRUE(isa<Instruction>(F)); 171 FDiv = cast<Instruction>(F); 172 EXPECT_TRUE(FDiv->hasAllowReciprocal()); 173 174 Builder.clearFastMathFlags(); 175 176 F = Builder.CreateFDiv(F, F); 177 ASSERT_TRUE(isa<Instruction>(F)); 178 FDiv = cast<Instruction>(F); 179 EXPECT_FALSE(FDiv->getFastMathFlags().any()); 180 FDiv->copyFastMathFlags(FAdd); 181 EXPECT_TRUE(FDiv->hasNoNaNs()); 182 183 } 184 185 } 186
