unittests/Support/IRBuilderTest.cpp

   1 //===- llvm/unittest/Support/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/Support/IRBuilder.h"
  11 #include "llvm/BasicBlock.h"
  12 #include "llvm/Function.h"
  13 #include "llvm/IntrinsicInst.h"
  14 #include "llvm/LLVMContext.h"
  15 #include "llvm/Module.h"
  16 #include "llvm/ADT/OwningPtr.h"
  17
  18 #include "gtest/gtest.h"
  19
  20 using namespace llvm;
  21
  22 class IRBuilderTest : public testing::Test {
  23 protected:
  24   virtual void SetUp() {
  25     M.reset(new Module("MyModule", getGlobalContext()));
  26     FunctionType *FTy = FunctionType::get(Type::getVoidTy(getGlobalContext()),
  27                                           /*isVarArg=*/false);
  28     Function *F = Function::Create(FTy, Function::ExternalLinkage, "", M.get());
  29     BB = BasicBlock::Create(getGlobalContext(), "", F);
  30   }
  31
  32   virtual void TearDown() {
  33     BB = 0;
  34     M.reset();
  35   }
  36
  37   OwningPtr<Module> M;
  38   BasicBlock *BB;
  39 };
  40
  41 TEST_F(IRBuilderTest, Lifetime) {
  42   IRBuilder<> Builder(BB);
  43   AllocaInst *Var1 = Builder.CreateAlloca(Builder.getInt8Ty());
  44   AllocaInst *Var2 = Builder.CreateAlloca(Builder.getInt32Ty());
  45   AllocaInst *Var3 = Builder.CreateAlloca(Builder.getInt8Ty(),
  46                                           Builder.getInt32(123));
  47
  48   CallInst *Start1 = Builder.CreateLifetimeStart(Var1);
  49   CallInst *Start2 = Builder.CreateLifetimeStart(Var2);
  50   CallInst *Start3 = Builder.CreateLifetimeStart(Var3, Builder.getInt64(100));
  51
  52   EXPECT_EQ(Start1->getArgOperand(0), Builder.getInt64(-1));
  53   EXPECT_EQ(Start2->getArgOperand(0), Builder.getInt64(-1));
  54   EXPECT_EQ(Start3->getArgOperand(0), Builder.getInt64(100));
  55
  56   EXPECT_EQ(Start1->getArgOperand(1), Var1);
  57   EXPECT_NE(Start2->getArgOperand(1), Var2);
  58   EXPECT_EQ(Start3->getArgOperand(1), Var3);
  59
  60   Value *End1 = Builder.CreateLifetimeEnd(Var1);
  61   Builder.CreateLifetimeEnd(Var2);
  62   Builder.CreateLifetimeEnd(Var3);
  63
  64   IntrinsicInst *II_Start1 = dyn_cast<IntrinsicInst>(Start1);
  65   IntrinsicInst *II_End1 = dyn_cast<IntrinsicInst>(End1);
  66   ASSERT_TRUE(II_Start1 != NULL);
  67   EXPECT_EQ(II_Start1->getIntrinsicID(), Intrinsic::lifetime_start);
  68   ASSERT_TRUE(II_End1 != NULL);
  69   EXPECT_EQ(II_End1->getIntrinsicID(), Intrinsic::lifetime_end);
  70 }