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/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:
  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
  35   virtual void TearDown() {
  36     BB = 0;
  37     M.reset();
  38   }
  39
  40   OwningPtr<Module> M;
  41   Function *F;
  42   BasicBlock *BB;
  43 };
  44
  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
  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 }