1 //===- llvm/unittest/IR/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/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"
25 class IRBuilderTest : public testing::Test {
27 virtual void SetUp() {
28 M.reset(new Module("MyModule", Ctx));
29 FunctionType *FTy = FunctionType::get(Type::getVoidTy(Ctx),
31 F = Function::Create(FTy, Function::ExternalLinkage, "", M.get());
32 BB = BasicBlock::Create(Ctx, "", F);
33 GV = new GlobalVariable(*M, Type::getFloatTy(Ctx), true,
34 GlobalValue::ExternalLinkage, 0);
37 virtual void TearDown() {
49 TEST_F(IRBuilderTest, Lifetime) {
50 IRBuilder<> Builder(BB);
51 AllocaInst *Var1 = Builder.CreateAlloca(Builder.getInt8Ty());
52 AllocaInst *Var2 = Builder.CreateAlloca(Builder.getInt32Ty());
53 AllocaInst *Var3 = Builder.CreateAlloca(Builder.getInt8Ty(),
54 Builder.getInt32(123));
56 CallInst *Start1 = Builder.CreateLifetimeStart(Var1);
57 CallInst *Start2 = Builder.CreateLifetimeStart(Var2);
58 CallInst *Start3 = Builder.CreateLifetimeStart(Var3, Builder.getInt64(100));
60 EXPECT_EQ(Start1->getArgOperand(0), Builder.getInt64(-1));
61 EXPECT_EQ(Start2->getArgOperand(0), Builder.getInt64(-1));
62 EXPECT_EQ(Start3->getArgOperand(0), Builder.getInt64(100));
64 EXPECT_EQ(Start1->getArgOperand(1), Var1);
65 EXPECT_NE(Start2->getArgOperand(1), Var2);
66 EXPECT_EQ(Start3->getArgOperand(1), Var3);
68 Value *End1 = Builder.CreateLifetimeEnd(Var1);
69 Builder.CreateLifetimeEnd(Var2);
70 Builder.CreateLifetimeEnd(Var3);
72 IntrinsicInst *II_Start1 = dyn_cast<IntrinsicInst>(Start1);
73 IntrinsicInst *II_End1 = dyn_cast<IntrinsicInst>(End1);
74 ASSERT_TRUE(II_Start1 != NULL);
75 EXPECT_EQ(II_Start1->getIntrinsicID(), Intrinsic::lifetime_start);
76 ASSERT_TRUE(II_End1 != NULL);
77 EXPECT_EQ(II_End1->getIntrinsicID(), Intrinsic::lifetime_end);
80 TEST_F(IRBuilderTest, CreateCondBr) {
81 IRBuilder<> Builder(BB);
82 BasicBlock *TBB = BasicBlock::Create(Ctx, "", F);
83 BasicBlock *FBB = BasicBlock::Create(Ctx, "", F);
85 BranchInst *BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB);
86 TerminatorInst *TI = BB->getTerminator();
88 EXPECT_EQ(2u, TI->getNumSuccessors());
89 EXPECT_EQ(TBB, TI->getSuccessor(0));
90 EXPECT_EQ(FBB, TI->getSuccessor(1));
92 BI->eraseFromParent();
93 MDNode *Weights = MDBuilder(Ctx).createBranchWeights(42, 13);
94 BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB, Weights);
95 TI = BB->getTerminator();
97 EXPECT_EQ(2u, TI->getNumSuccessors());
98 EXPECT_EQ(TBB, TI->getSuccessor(0));
99 EXPECT_EQ(FBB, TI->getSuccessor(1));
100 EXPECT_EQ(Weights, TI->getMetadata(LLVMContext::MD_prof));
103 TEST_F(IRBuilderTest, LandingPadName) {
104 IRBuilder<> Builder(BB);
105 LandingPadInst *LP = Builder.CreateLandingPad(Builder.getInt32Ty(),
106 Builder.getInt32(0), 0, "LP");
107 EXPECT_EQ(LP->getName(), "LP");
110 TEST_F(IRBuilderTest, GetIntTy) {
111 IRBuilder<> Builder(BB);
112 IntegerType *Ty1 = Builder.getInt1Ty();
113 EXPECT_EQ(Ty1, IntegerType::get(Ctx, 1));
115 DataLayout* DL = new DataLayout(M.get());
116 IntegerType *IntPtrTy = Builder.getIntPtrTy(DL);
117 unsigned IntPtrBitSize = DL->getPointerSizeInBits(0);
118 EXPECT_EQ(IntPtrTy, IntegerType::get(Ctx, IntPtrBitSize));
122 TEST_F(IRBuilderTest, FastMathFlags) {
123 IRBuilder<> Builder(BB);
125 Instruction *FDiv, *FAdd;
127 F = Builder.CreateLoad(GV);
128 F = Builder.CreateFAdd(F, F);
130 EXPECT_FALSE(Builder.getFastMathFlags().any());
131 ASSERT_TRUE(isa<Instruction>(F));
132 FAdd = cast<Instruction>(F);
133 EXPECT_FALSE(FAdd->hasNoNaNs());
136 Builder.SetFastMathFlags(FMF);
138 F = Builder.CreateFAdd(F, F);
139 EXPECT_FALSE(Builder.getFastMathFlags().any());
141 FMF.setUnsafeAlgebra();
142 Builder.SetFastMathFlags(FMF);
144 F = Builder.CreateFAdd(F, F);
145 EXPECT_TRUE(Builder.getFastMathFlags().any());
146 ASSERT_TRUE(isa<Instruction>(F));
147 FAdd = cast<Instruction>(F);
148 EXPECT_TRUE(FAdd->hasNoNaNs());
150 // Now, try it with CreateBinOp
151 F = Builder.CreateBinOp(Instruction::FAdd, F, F);
152 EXPECT_TRUE(Builder.getFastMathFlags().any());
153 ASSERT_TRUE(isa<Instruction>(F));
154 FAdd = cast<Instruction>(F);
155 EXPECT_TRUE(FAdd->hasNoNaNs());
157 F = Builder.CreateFDiv(F, F);
158 EXPECT_TRUE(Builder.getFastMathFlags().any());
159 EXPECT_TRUE(Builder.getFastMathFlags().UnsafeAlgebra);
160 ASSERT_TRUE(isa<Instruction>(F));
161 FDiv = cast<Instruction>(F);
162 EXPECT_TRUE(FDiv->hasAllowReciprocal());
164 Builder.clearFastMathFlags();
166 F = Builder.CreateFDiv(F, F);
167 ASSERT_TRUE(isa<Instruction>(F));
168 FDiv = cast<Instruction>(F);
169 EXPECT_FALSE(FDiv->hasAllowReciprocal());
172 FMF.setAllowReciprocal();
173 Builder.SetFastMathFlags(FMF);
175 F = Builder.CreateFDiv(F, F);
176 EXPECT_TRUE(Builder.getFastMathFlags().any());
177 EXPECT_TRUE(Builder.getFastMathFlags().AllowReciprocal);
178 ASSERT_TRUE(isa<Instruction>(F));
179 FDiv = cast<Instruction>(F);
180 EXPECT_TRUE(FDiv->hasAllowReciprocal());
182 Builder.clearFastMathFlags();
184 F = Builder.CreateFDiv(F, F);
185 ASSERT_TRUE(isa<Instruction>(F));
186 FDiv = cast<Instruction>(F);
187 EXPECT_FALSE(FDiv->getFastMathFlags().any());
188 FDiv->copyFastMathFlags(FAdd);
189 EXPECT_TRUE(FDiv->hasNoNaNs());
193 TEST_F(IRBuilderTest, RAIIHelpersTest) {
194 IRBuilder<> Builder(BB);
195 EXPECT_FALSE(Builder.getFastMathFlags().allowReciprocal());
196 MDBuilder MDB(M->getContext());
198 MDNode *FPMathA = MDB.createFPMath(0.01f);
199 MDNode *FPMathB = MDB.createFPMath(0.1f);
201 Builder.SetDefaultFPMathTag(FPMathA);
204 IRBuilder<>::FastMathFlagGuard Guard(Builder);
206 FMF.setAllowReciprocal();
207 Builder.SetFastMathFlags(FMF);
208 Builder.SetDefaultFPMathTag(FPMathB);
209 EXPECT_TRUE(Builder.getFastMathFlags().allowReciprocal());
210 EXPECT_EQ(FPMathB, Builder.getDefaultFPMathTag());
213 EXPECT_FALSE(Builder.getFastMathFlags().allowReciprocal());
214 EXPECT_EQ(FPMathA, Builder.getDefaultFPMathTag());
216 Value *F = Builder.CreateLoad(GV);
219 IRBuilder<>::InsertPointGuard Guard(Builder);
220 Builder.SetInsertPoint(cast<Instruction>(F));
221 EXPECT_EQ(F, Builder.GetInsertPoint());
224 EXPECT_EQ(BB->end(), Builder.GetInsertPoint());
225 EXPECT_EQ(BB, Builder.GetInsertBlock());