1 //===- llvm/unittest/VMCore/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/BasicBlock.h"
11 #include "llvm/Function.h"
12 #include "llvm/IRBuilder.h"
13 #include "llvm/IntrinsicInst.h"
14 #include "llvm/LLVMContext.h"
15 #include "llvm/MDBuilder.h"
16 #include "llvm/Module.h"
17 #include "llvm/ADT/OwningPtr.h"
18
19 #include "gtest/gtest.h"
20
21 using namespace llvm;
22
23 namespace {
24
25 class IRBuilderTest : public testing::Test {
26 protected:
SetUp()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 }
34
TearDown()35 virtual void TearDown() {
36 BB = 0;
37 M.reset();
38 }
39
40 OwningPtr<Module> M;
41 Function *F;
42 BasicBlock *BB;
43 };
44
TEST_F(IRBuilderTest,Lifetime)45 TEST_F(IRBuilderTest, Lifetime) {
46 IRBuilder<> Builder(BB);
47 AllocaInst *Var1 = Builder.CreateAlloca(Builder.getInt8Ty());
48 AllocaInst *Var2 = Builder.CreateAlloca(Builder.getInt32Ty());
49 AllocaInst *Var3 = Builder.CreateAlloca(Builder.getInt8Ty(),
50 Builder.getInt32(123));
51
52 CallInst *Start1 = Builder.CreateLifetimeStart(Var1);
53 CallInst *Start2 = Builder.CreateLifetimeStart(Var2);
54 CallInst *Start3 = Builder.CreateLifetimeStart(Var3, Builder.getInt64(100));
55
56 EXPECT_EQ(Start1->getArgOperand(0), Builder.getInt64(-1));
57 EXPECT_EQ(Start2->getArgOperand(0), Builder.getInt64(-1));
58 EXPECT_EQ(Start3->getArgOperand(0), Builder.getInt64(100));
59
60 EXPECT_EQ(Start1->getArgOperand(1), Var1);
61 EXPECT_NE(Start2->getArgOperand(1), Var2);
62 EXPECT_EQ(Start3->getArgOperand(1), Var3);
63
64 Value *End1 = Builder.CreateLifetimeEnd(Var1);
65 Builder.CreateLifetimeEnd(Var2);
66 Builder.CreateLifetimeEnd(Var3);
67
68 IntrinsicInst *II_Start1 = dyn_cast<IntrinsicInst>(Start1);
69 IntrinsicInst *II_End1 = dyn_cast<IntrinsicInst>(End1);
70 ASSERT_TRUE(II_Start1 != NULL);
71 EXPECT_EQ(II_Start1->getIntrinsicID(), Intrinsic::lifetime_start);
72 ASSERT_TRUE(II_End1 != NULL);
73 EXPECT_EQ(II_End1->getIntrinsicID(), Intrinsic::lifetime_end);
74 }
75
TEST_F(IRBuilderTest,CreateCondBr)76 TEST_F(IRBuilderTest, CreateCondBr) {
77 IRBuilder<> Builder(BB);
78 BasicBlock *TBB = BasicBlock::Create(getGlobalContext(), "", F);
79 BasicBlock *FBB = BasicBlock::Create(getGlobalContext(), "", F);
80
81 BranchInst *BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB);
82 TerminatorInst *TI = BB->getTerminator();
83 EXPECT_EQ(BI, TI);
84 EXPECT_EQ(2u, TI->getNumSuccessors());
85 EXPECT_EQ(TBB, TI->getSuccessor(0));
86 EXPECT_EQ(FBB, TI->getSuccessor(1));
87
88 BI->eraseFromParent();
89 MDNode *Weights = MDBuilder(getGlobalContext()).createBranchWeights(42, 13);
90 BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB, Weights);
91 TI = BB->getTerminator();
92 EXPECT_EQ(BI, TI);
93 EXPECT_EQ(2u, TI->getNumSuccessors());
94 EXPECT_EQ(TBB, TI->getSuccessor(0));
95 EXPECT_EQ(FBB, TI->getSuccessor(1));
96 EXPECT_EQ(Weights, TI->getMetadata(LLVMContext::MD_prof));
97 }
98
99 }
100