| //===- llvm/unittest/IR/IRBuilderTest.cpp - IRBuilder tests ---------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/IR/IRBuilder.h" |
| #include "llvm/IR/BasicBlock.h" |
| #include "llvm/IR/DataLayout.h" |
| #include "llvm/IR/Function.h" |
| #include "llvm/IR/IntrinsicInst.h" |
| #include "llvm/IR/LLVMContext.h" |
| #include "llvm/IR/MDBuilder.h" |
| #include "llvm/IR/Module.h" |
| #include "llvm/IR/NoFolder.h" |
| #include "gtest/gtest.h" |
| |
| using namespace llvm; |
| |
| namespace { |
| |
| class IRBuilderTest : public testing::Test { |
| protected: |
| virtual void SetUp() { |
| M.reset(new Module("MyModule", Ctx)); |
| FunctionType *FTy = FunctionType::get(Type::getVoidTy(Ctx), |
| /*isVarArg=*/false); |
| F = Function::Create(FTy, Function::ExternalLinkage, "", M.get()); |
| BB = BasicBlock::Create(Ctx, "", F); |
| GV = new GlobalVariable(*M, Type::getFloatTy(Ctx), true, |
| GlobalValue::ExternalLinkage, nullptr); |
| } |
| |
| virtual void TearDown() { |
| BB = nullptr; |
| M.reset(); |
| } |
| |
| LLVMContext Ctx; |
| std::unique_ptr<Module> M; |
| Function *F; |
| BasicBlock *BB; |
| GlobalVariable *GV; |
| }; |
| |
| TEST_F(IRBuilderTest, Lifetime) { |
| IRBuilder<> Builder(BB); |
| AllocaInst *Var1 = Builder.CreateAlloca(Builder.getInt8Ty()); |
| AllocaInst *Var2 = Builder.CreateAlloca(Builder.getInt32Ty()); |
| AllocaInst *Var3 = Builder.CreateAlloca(Builder.getInt8Ty(), |
| Builder.getInt32(123)); |
| |
| CallInst *Start1 = Builder.CreateLifetimeStart(Var1); |
| CallInst *Start2 = Builder.CreateLifetimeStart(Var2); |
| CallInst *Start3 = Builder.CreateLifetimeStart(Var3, Builder.getInt64(100)); |
| |
| EXPECT_EQ(Start1->getArgOperand(0), Builder.getInt64(-1)); |
| EXPECT_EQ(Start2->getArgOperand(0), Builder.getInt64(-1)); |
| EXPECT_EQ(Start3->getArgOperand(0), Builder.getInt64(100)); |
| |
| EXPECT_EQ(Start1->getArgOperand(1), Var1); |
| EXPECT_NE(Start2->getArgOperand(1), Var2); |
| EXPECT_EQ(Start3->getArgOperand(1), Var3); |
| |
| Value *End1 = Builder.CreateLifetimeEnd(Var1); |
| Builder.CreateLifetimeEnd(Var2); |
| Builder.CreateLifetimeEnd(Var3); |
| |
| IntrinsicInst *II_Start1 = dyn_cast<IntrinsicInst>(Start1); |
| IntrinsicInst *II_End1 = dyn_cast<IntrinsicInst>(End1); |
| ASSERT_TRUE(II_Start1 != nullptr); |
| EXPECT_EQ(II_Start1->getIntrinsicID(), Intrinsic::lifetime_start); |
| ASSERT_TRUE(II_End1 != nullptr); |
| EXPECT_EQ(II_End1->getIntrinsicID(), Intrinsic::lifetime_end); |
| } |
| |
| TEST_F(IRBuilderTest, CreateCondBr) { |
| IRBuilder<> Builder(BB); |
| BasicBlock *TBB = BasicBlock::Create(Ctx, "", F); |
| BasicBlock *FBB = BasicBlock::Create(Ctx, "", F); |
| |
| BranchInst *BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB); |
| TerminatorInst *TI = BB->getTerminator(); |
| EXPECT_EQ(BI, TI); |
| EXPECT_EQ(2u, TI->getNumSuccessors()); |
| EXPECT_EQ(TBB, TI->getSuccessor(0)); |
| EXPECT_EQ(FBB, TI->getSuccessor(1)); |
| |
| BI->eraseFromParent(); |
| MDNode *Weights = MDBuilder(Ctx).createBranchWeights(42, 13); |
| BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB, Weights); |
| TI = BB->getTerminator(); |
| EXPECT_EQ(BI, TI); |
| EXPECT_EQ(2u, TI->getNumSuccessors()); |
| EXPECT_EQ(TBB, TI->getSuccessor(0)); |
| EXPECT_EQ(FBB, TI->getSuccessor(1)); |
| EXPECT_EQ(Weights, TI->getMetadata(LLVMContext::MD_prof)); |
| } |
| |
| TEST_F(IRBuilderTest, LandingPadName) { |
| IRBuilder<> Builder(BB); |
| LandingPadInst *LP = Builder.CreateLandingPad(Builder.getInt32Ty(), |
| Builder.getInt32(0), 0, "LP"); |
| EXPECT_EQ(LP->getName(), "LP"); |
| } |
| |
| TEST_F(IRBuilderTest, DataLayout) { |
| std::unique_ptr<Module> M(new Module("test", Ctx)); |
| M->setDataLayout("e-n32"); |
| EXPECT_TRUE(M->getDataLayout()->isLegalInteger(32)); |
| M->setDataLayout("e"); |
| EXPECT_FALSE(M->getDataLayout()->isLegalInteger(32)); |
| } |
| |
| TEST_F(IRBuilderTest, GetIntTy) { |
| IRBuilder<> Builder(BB); |
| IntegerType *Ty1 = Builder.getInt1Ty(); |
| EXPECT_EQ(Ty1, IntegerType::get(Ctx, 1)); |
| |
| DataLayout* DL = new DataLayout(M.get()); |
| IntegerType *IntPtrTy = Builder.getIntPtrTy(DL); |
| unsigned IntPtrBitSize = DL->getPointerSizeInBits(0); |
| EXPECT_EQ(IntPtrTy, IntegerType::get(Ctx, IntPtrBitSize)); |
| delete DL; |
| } |
| |
| TEST_F(IRBuilderTest, FastMathFlags) { |
| IRBuilder<> Builder(BB); |
| Value *F; |
| Instruction *FDiv, *FAdd; |
| |
| F = Builder.CreateLoad(GV); |
| F = Builder.CreateFAdd(F, F); |
| |
| EXPECT_FALSE(Builder.getFastMathFlags().any()); |
| ASSERT_TRUE(isa<Instruction>(F)); |
| FAdd = cast<Instruction>(F); |
| EXPECT_FALSE(FAdd->hasNoNaNs()); |
| |
| FastMathFlags FMF; |
| Builder.SetFastMathFlags(FMF); |
| |
| F = Builder.CreateFAdd(F, F); |
| EXPECT_FALSE(Builder.getFastMathFlags().any()); |
| |
| FMF.setUnsafeAlgebra(); |
| Builder.SetFastMathFlags(FMF); |
| |
| F = Builder.CreateFAdd(F, F); |
| EXPECT_TRUE(Builder.getFastMathFlags().any()); |
| ASSERT_TRUE(isa<Instruction>(F)); |
| FAdd = cast<Instruction>(F); |
| EXPECT_TRUE(FAdd->hasNoNaNs()); |
| |
| // Now, try it with CreateBinOp |
| F = Builder.CreateBinOp(Instruction::FAdd, F, F); |
| EXPECT_TRUE(Builder.getFastMathFlags().any()); |
| ASSERT_TRUE(isa<Instruction>(F)); |
| FAdd = cast<Instruction>(F); |
| EXPECT_TRUE(FAdd->hasNoNaNs()); |
| |
| F = Builder.CreateFDiv(F, F); |
| EXPECT_TRUE(Builder.getFastMathFlags().any()); |
| EXPECT_TRUE(Builder.getFastMathFlags().UnsafeAlgebra); |
| ASSERT_TRUE(isa<Instruction>(F)); |
| FDiv = cast<Instruction>(F); |
| EXPECT_TRUE(FDiv->hasAllowReciprocal()); |
| |
| Builder.clearFastMathFlags(); |
| |
| F = Builder.CreateFDiv(F, F); |
| ASSERT_TRUE(isa<Instruction>(F)); |
| FDiv = cast<Instruction>(F); |
| EXPECT_FALSE(FDiv->hasAllowReciprocal()); |
| |
| FMF.clear(); |
| FMF.setAllowReciprocal(); |
| Builder.SetFastMathFlags(FMF); |
| |
| F = Builder.CreateFDiv(F, F); |
| EXPECT_TRUE(Builder.getFastMathFlags().any()); |
| EXPECT_TRUE(Builder.getFastMathFlags().AllowReciprocal); |
| ASSERT_TRUE(isa<Instruction>(F)); |
| FDiv = cast<Instruction>(F); |
| EXPECT_TRUE(FDiv->hasAllowReciprocal()); |
| |
| Builder.clearFastMathFlags(); |
| |
| // To test a copy, make sure that a '0' and a '1' change state. |
| F = Builder.CreateFDiv(F, F); |
| ASSERT_TRUE(isa<Instruction>(F)); |
| FDiv = cast<Instruction>(F); |
| EXPECT_FALSE(FDiv->getFastMathFlags().any()); |
| FDiv->setHasAllowReciprocal(true); |
| FAdd->setHasAllowReciprocal(false); |
| FDiv->copyFastMathFlags(FAdd); |
| EXPECT_TRUE(FDiv->hasNoNaNs()); |
| EXPECT_FALSE(FDiv->hasAllowReciprocal()); |
| |
| } |
| |
| TEST_F(IRBuilderTest, WrapFlags) { |
| IRBuilder<true, NoFolder> Builder(BB); |
| |
| // Test instructions. |
| GlobalVariable *G = new GlobalVariable(*M, Builder.getInt32Ty(), true, |
| GlobalValue::ExternalLinkage, nullptr); |
| Value *V = Builder.CreateLoad(G); |
| EXPECT_TRUE( |
| cast<BinaryOperator>(Builder.CreateNSWAdd(V, V))->hasNoSignedWrap()); |
| EXPECT_TRUE( |
| cast<BinaryOperator>(Builder.CreateNSWMul(V, V))->hasNoSignedWrap()); |
| EXPECT_TRUE( |
| cast<BinaryOperator>(Builder.CreateNSWSub(V, V))->hasNoSignedWrap()); |
| EXPECT_TRUE(cast<BinaryOperator>( |
| Builder.CreateShl(V, V, "", /* NUW */ false, /* NSW */ true)) |
| ->hasNoSignedWrap()); |
| |
| EXPECT_TRUE( |
| cast<BinaryOperator>(Builder.CreateNUWAdd(V, V))->hasNoUnsignedWrap()); |
| EXPECT_TRUE( |
| cast<BinaryOperator>(Builder.CreateNUWMul(V, V))->hasNoUnsignedWrap()); |
| EXPECT_TRUE( |
| cast<BinaryOperator>(Builder.CreateNUWSub(V, V))->hasNoUnsignedWrap()); |
| EXPECT_TRUE(cast<BinaryOperator>( |
| Builder.CreateShl(V, V, "", /* NUW */ true, /* NSW */ false)) |
| ->hasNoUnsignedWrap()); |
| |
| // Test operators created with constants. |
| Constant *C = Builder.getInt32(42); |
| EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNSWAdd(C, C)) |
| ->hasNoSignedWrap()); |
| EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNSWSub(C, C)) |
| ->hasNoSignedWrap()); |
| EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNSWMul(C, C)) |
| ->hasNoSignedWrap()); |
| EXPECT_TRUE(cast<OverflowingBinaryOperator>( |
| Builder.CreateShl(C, C, "", /* NUW */ false, /* NSW */ true)) |
| ->hasNoSignedWrap()); |
| |
| EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNUWAdd(C, C)) |
| ->hasNoUnsignedWrap()); |
| EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNUWSub(C, C)) |
| ->hasNoUnsignedWrap()); |
| EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNUWMul(C, C)) |
| ->hasNoUnsignedWrap()); |
| EXPECT_TRUE(cast<OverflowingBinaryOperator>( |
| Builder.CreateShl(C, C, "", /* NUW */ true, /* NSW */ false)) |
| ->hasNoUnsignedWrap()); |
| } |
| |
| TEST_F(IRBuilderTest, RAIIHelpersTest) { |
| IRBuilder<> Builder(BB); |
| EXPECT_FALSE(Builder.getFastMathFlags().allowReciprocal()); |
| MDBuilder MDB(M->getContext()); |
| |
| MDNode *FPMathA = MDB.createFPMath(0.01f); |
| MDNode *FPMathB = MDB.createFPMath(0.1f); |
| |
| Builder.SetDefaultFPMathTag(FPMathA); |
| |
| { |
| IRBuilder<>::FastMathFlagGuard Guard(Builder); |
| FastMathFlags FMF; |
| FMF.setAllowReciprocal(); |
| Builder.SetFastMathFlags(FMF); |
| Builder.SetDefaultFPMathTag(FPMathB); |
| EXPECT_TRUE(Builder.getFastMathFlags().allowReciprocal()); |
| EXPECT_EQ(FPMathB, Builder.getDefaultFPMathTag()); |
| } |
| |
| EXPECT_FALSE(Builder.getFastMathFlags().allowReciprocal()); |
| EXPECT_EQ(FPMathA, Builder.getDefaultFPMathTag()); |
| |
| Value *F = Builder.CreateLoad(GV); |
| |
| { |
| IRBuilder<>::InsertPointGuard Guard(Builder); |
| Builder.SetInsertPoint(cast<Instruction>(F)); |
| EXPECT_EQ(F, Builder.GetInsertPoint()); |
| } |
| |
| EXPECT_EQ(BB->end(), Builder.GetInsertPoint()); |
| EXPECT_EQ(BB, Builder.GetInsertBlock()); |
| } |
| |
| |
| } |