1 //===- llvm/unittest/VMCore/IRBuilderTest.cpp - IRBuilder 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/IRBuilder.h"
11 #include "llvm/ADT/OwningPtr.h"
12 #include "llvm/BasicBlock.h"
13 #include "llvm/DataLayout.h"
14 #include "llvm/Function.h"
15 #include "llvm/IntrinsicInst.h"
16 #include "llvm/LLVMContext.h"
17 #include "llvm/MDBuilder.h"
18 #include "llvm/Module.h"
19 #include "gtest/gtest.h"
25 class IRBuilderTest : public testing::Test {
27 virtual void SetUp() {
28 M.reset(new Module("MyModule", getGlobalContext()));
29 FunctionType *FTy = FunctionType::get(Type::getVoidTy(getGlobalContext()),
31 F = Function::Create(FTy, Function::ExternalLinkage, "", M.get());
32 BB = BasicBlock::Create(getGlobalContext(), "", F);
33 GV = new GlobalVariable(Type::getFloatTy(getGlobalContext()), true,
34 GlobalValue::ExternalLinkage);
37 virtual void TearDown() {
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));
55 CallInst *Start1 = Builder.CreateLifetimeStart(Var1);
56 CallInst *Start2 = Builder.CreateLifetimeStart(Var2);
57 CallInst *Start3 = Builder.CreateLifetimeStart(Var3, Builder.getInt64(100));
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));
63 EXPECT_EQ(Start1->getArgOperand(1), Var1);
64 EXPECT_NE(Start2->getArgOperand(1), Var2);
65 EXPECT_EQ(Start3->getArgOperand(1), Var3);
67 Value *End1 = Builder.CreateLifetimeEnd(Var1);
68 Builder.CreateLifetimeEnd(Var2);
69 Builder.CreateLifetimeEnd(Var3);
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);
79 TEST_F(IRBuilderTest, CreateCondBr) {
80 IRBuilder<> Builder(BB);
81 BasicBlock *TBB = BasicBlock::Create(getGlobalContext(), "", F);
82 BasicBlock *FBB = BasicBlock::Create(getGlobalContext(), "", F);
84 BranchInst *BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB);
85 TerminatorInst *TI = BB->getTerminator();
87 EXPECT_EQ(2u, TI->getNumSuccessors());
88 EXPECT_EQ(TBB, TI->getSuccessor(0));
89 EXPECT_EQ(FBB, TI->getSuccessor(1));
91 BI->eraseFromParent();
92 MDNode *Weights = MDBuilder(getGlobalContext()).createBranchWeights(42, 13);
93 BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB, Weights);
94 TI = BB->getTerminator();
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));
102 TEST_F(IRBuilderTest, GetIntTy) {
103 IRBuilder<> Builder(BB);
104 IntegerType *Ty1 = Builder.getInt1Ty();
105 EXPECT_EQ(Ty1, IntegerType::get(getGlobalContext(), 1));
107 DataLayout* DL = new DataLayout(M.get());
108 IntegerType *IntPtrTy = Builder.getIntPtrTy(DL);
109 unsigned IntPtrBitSize = DL->getPointerSizeInBits(0);
110 EXPECT_EQ(IntPtrTy, IntegerType::get(getGlobalContext(), IntPtrBitSize));
113 TEST_F(IRBuilderTest, FastMathFlags) {
114 IRBuilder<> Builder(BB);
116 Instruction *FDiv, *FAdd;
118 F = Builder.CreateLoad(GV);
119 F = Builder.CreateFAdd(F, F);
121 EXPECT_FALSE(Builder.getFastMathFlags().any());
122 ASSERT_TRUE(isa<Instruction>(F));
123 FAdd = cast<Instruction>(F);
124 EXPECT_FALSE(FAdd->hasNoNaNs());
127 Builder.SetFastMathFlags(FMF);
129 F = Builder.CreateFAdd(F, F);
130 EXPECT_FALSE(Builder.getFastMathFlags().any());
132 FMF.UnsafeAlgebra = true;
133 Builder.SetFastMathFlags(FMF);
135 F = Builder.CreateFAdd(F, F);
136 EXPECT_TRUE(Builder.getFastMathFlags().any());
137 ASSERT_TRUE(isa<Instruction>(F));
138 FAdd = cast<Instruction>(F);
139 EXPECT_TRUE(FAdd->hasNoNaNs());
141 F = Builder.CreateFDiv(F, F);
142 EXPECT_TRUE(Builder.getFastMathFlags().any());
143 EXPECT_TRUE(Builder.getFastMathFlags().UnsafeAlgebra);
144 ASSERT_TRUE(isa<Instruction>(F));
145 FDiv = cast<Instruction>(F);
146 EXPECT_TRUE(FDiv->hasAllowReciprocal());
148 Builder.clearFastMathFlags();
150 F = Builder.CreateFDiv(F, F);
151 ASSERT_TRUE(isa<Instruction>(F));
152 FDiv = cast<Instruction>(F);
153 EXPECT_FALSE(FDiv->hasAllowReciprocal());
156 FMF.AllowReciprocal = true;
157 Builder.SetFastMathFlags(FMF);
159 F = Builder.CreateFDiv(F, F);
160 EXPECT_TRUE(Builder.getFastMathFlags().any());
161 EXPECT_TRUE(Builder.getFastMathFlags().AllowReciprocal);
162 ASSERT_TRUE(isa<Instruction>(F));
163 FDiv = cast<Instruction>(F);
164 EXPECT_TRUE(FDiv->hasAllowReciprocal());
166 Builder.clearFastMathFlags();
168 F = Builder.CreateFDiv(F, F);
169 ASSERT_TRUE(isa<Instruction>(F));
170 FDiv = cast<Instruction>(F);
171 EXPECT_FALSE(FDiv->getFastMathFlags().any());
172 FDiv->copyFastMathFlags(FAdd);
173 EXPECT_TRUE(FDiv->hasNoNaNs());