unittests/VMCore/IRBuilderTest.cpp

   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/DataLayout.h"
  12 #include "llvm/Function.h"
  13 #include "llvm/IRBuilder.h"
  14 #include "llvm/IntrinsicInst.h"
  15 #include "llvm/LLVMContext.h"
  16 #include "llvm/MDBuilder.h"
  17 #include "llvm/Module.h"
  18 #include "llvm/ADT/OwningPtr.h"
  19
  20 #include "gtest/gtest.h"
  21
  22 using namespace llvm;
  23
  24 namespace {
  25
  26 class IRBuilderTest : public testing::Test {
  27 protected:
  28   virtual void SetUp() {
  29     M.reset(new Module("MyModule", getGlobalContext()));
  30     FunctionType *FTy = FunctionType::get(Type::getVoidTy(getGlobalContext()),
  31                                           /*isVarArg=*/false);
  32     F = Function::Create(FTy, Function::ExternalLinkage, "", M.get());
  33     BB = BasicBlock::Create(getGlobalContext(), "", F);
  34   }
  35
  36   virtual void TearDown() {
  37     BB = 0;
  38     M.reset();
  39   }
  40
  41   OwningPtr<Module> M;
  42   Function *F;
  43   BasicBlock *BB;
  44 };
  45
  46 TEST_F(IRBuilderTest, Lifetime) {
  47   IRBuilder<> Builder(BB);
  48   AllocaInst *Var1 = Builder.CreateAlloca(Builder.getInt8Ty());
  49   AllocaInst *Var2 = Builder.CreateAlloca(Builder.getInt32Ty());
  50   AllocaInst *Var3 = Builder.CreateAlloca(Builder.getInt8Ty(),
  51                                           Builder.getInt32(123));
  52
  53   CallInst *Start1 = Builder.CreateLifetimeStart(Var1);
  54   CallInst *Start2 = Builder.CreateLifetimeStart(Var2);
  55   CallInst *Start3 = Builder.CreateLifetimeStart(Var3, Builder.getInt64(100));
  56
  57   EXPECT_EQ(Start1->getArgOperand(0), Builder.getInt64(-1));
  58   EXPECT_EQ(Start2->getArgOperand(0), Builder.getInt64(-1));
  59   EXPECT_EQ(Start3->getArgOperand(0), Builder.getInt64(100));
  60
  61   EXPECT_EQ(Start1->getArgOperand(1), Var1);
  62   EXPECT_NE(Start2->getArgOperand(1), Var2);
  63   EXPECT_EQ(Start3->getArgOperand(1), Var3);
  64
  65   Value *End1 = Builder.CreateLifetimeEnd(Var1);
  66   Builder.CreateLifetimeEnd(Var2);
  67   Builder.CreateLifetimeEnd(Var3);
  68
  69   IntrinsicInst *II_Start1 = dyn_cast<IntrinsicInst>(Start1);
  70   IntrinsicInst *II_End1 = dyn_cast<IntrinsicInst>(End1);
  71   ASSERT_TRUE(II_Start1 != NULL);
  72   EXPECT_EQ(II_Start1->getIntrinsicID(), Intrinsic::lifetime_start);
  73   ASSERT_TRUE(II_End1 != NULL);
  74   EXPECT_EQ(II_End1->getIntrinsicID(), Intrinsic::lifetime_end);
  75 }
  76
  77 TEST_F(IRBuilderTest, CreateCondBr) {
  78   IRBuilder<> Builder(BB);
  79   BasicBlock *TBB = BasicBlock::Create(getGlobalContext(), "", F);
  80   BasicBlock *FBB = BasicBlock::Create(getGlobalContext(), "", F);
  81
  82   BranchInst *BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB);
  83   TerminatorInst *TI = BB->getTerminator();
  84   EXPECT_EQ(BI, TI);
  85   EXPECT_EQ(2u, TI->getNumSuccessors());
  86   EXPECT_EQ(TBB, TI->getSuccessor(0));
  87   EXPECT_EQ(FBB, TI->getSuccessor(1));
  88
  89   BI->eraseFromParent();
  90   MDNode *Weights = MDBuilder(getGlobalContext()).createBranchWeights(42, 13);
  91   BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB, Weights);
  92   TI = BB->getTerminator();
  93   EXPECT_EQ(BI, TI);
  94   EXPECT_EQ(2u, TI->getNumSuccessors());
  95   EXPECT_EQ(TBB, TI->getSuccessor(0));
  96   EXPECT_EQ(FBB, TI->getSuccessor(1));
  97   EXPECT_EQ(Weights, TI->getMetadata(LLVMContext::MD_prof));
  98 }
  99
 100 TEST_F(IRBuilderTest, GetIntTy) {
 101   IRBuilder<> Builder(BB);
 102   IntegerType *Ty1 = Builder.getInt1Ty();
 103   EXPECT_EQ(Ty1, IntegerType::get(getGlobalContext(), 1));
 104
 105   DataLayout* DL = new DataLayout(M.get());
 106   IntegerType *IntPtrTy = Builder.getIntPtrTy(DL);
 107   unsigned IntPtrBitSize =  DL->getPointerSizeInBits(0);
 108   EXPECT_EQ(IntPtrTy, IntegerType::get(getGlobalContext(), IntPtrBitSize));
 109 }
 110
 111 }