forked from OSchip/llvm-project
508 lines
17 KiB
C++
508 lines
17 KiB
C++
//===- llvm/unittest/IR/IRBuilderTest.cpp - IRBuilder tests ---------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/IR/IRBuilder.h"
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#include "llvm/IR/BasicBlock.h"
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#include "llvm/IR/DataLayout.h"
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#include "llvm/IR/DIBuilder.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/IntrinsicInst.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/MDBuilder.h"
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#include "llvm/IR/Module.h"
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#include "llvm/IR/NoFolder.h"
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#include "llvm/IR/Verifier.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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namespace {
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class IRBuilderTest : public testing::Test {
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protected:
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void SetUp() override {
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M.reset(new Module("MyModule", Ctx));
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FunctionType *FTy = FunctionType::get(Type::getVoidTy(Ctx),
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/*isVarArg=*/false);
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F = Function::Create(FTy, Function::ExternalLinkage, "", M.get());
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BB = BasicBlock::Create(Ctx, "", F);
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GV = new GlobalVariable(*M, Type::getFloatTy(Ctx), true,
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GlobalValue::ExternalLinkage, nullptr);
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}
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void TearDown() override {
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BB = nullptr;
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M.reset();
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}
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LLVMContext Ctx;
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std::unique_ptr<Module> M;
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Function *F;
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BasicBlock *BB;
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GlobalVariable *GV;
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};
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TEST_F(IRBuilderTest, Lifetime) {
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IRBuilder<> Builder(BB);
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AllocaInst *Var1 = Builder.CreateAlloca(Builder.getInt8Ty());
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AllocaInst *Var2 = Builder.CreateAlloca(Builder.getInt32Ty());
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AllocaInst *Var3 = Builder.CreateAlloca(Builder.getInt8Ty(),
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Builder.getInt32(123));
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CallInst *Start1 = Builder.CreateLifetimeStart(Var1);
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CallInst *Start2 = Builder.CreateLifetimeStart(Var2);
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CallInst *Start3 = Builder.CreateLifetimeStart(Var3, Builder.getInt64(100));
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EXPECT_EQ(Start1->getArgOperand(0), Builder.getInt64(-1));
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EXPECT_EQ(Start2->getArgOperand(0), Builder.getInt64(-1));
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EXPECT_EQ(Start3->getArgOperand(0), Builder.getInt64(100));
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EXPECT_EQ(Start1->getArgOperand(1), Var1);
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EXPECT_NE(Start2->getArgOperand(1), Var2);
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EXPECT_EQ(Start3->getArgOperand(1), Var3);
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Value *End1 = Builder.CreateLifetimeEnd(Var1);
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Builder.CreateLifetimeEnd(Var2);
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Builder.CreateLifetimeEnd(Var3);
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IntrinsicInst *II_Start1 = dyn_cast<IntrinsicInst>(Start1);
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IntrinsicInst *II_End1 = dyn_cast<IntrinsicInst>(End1);
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ASSERT_TRUE(II_Start1 != nullptr);
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EXPECT_EQ(II_Start1->getIntrinsicID(), Intrinsic::lifetime_start);
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ASSERT_TRUE(II_End1 != nullptr);
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EXPECT_EQ(II_End1->getIntrinsicID(), Intrinsic::lifetime_end);
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}
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TEST_F(IRBuilderTest, CreateCondBr) {
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IRBuilder<> Builder(BB);
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BasicBlock *TBB = BasicBlock::Create(Ctx, "", F);
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BasicBlock *FBB = BasicBlock::Create(Ctx, "", F);
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BranchInst *BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB);
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TerminatorInst *TI = BB->getTerminator();
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EXPECT_EQ(BI, TI);
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EXPECT_EQ(2u, TI->getNumSuccessors());
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EXPECT_EQ(TBB, TI->getSuccessor(0));
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EXPECT_EQ(FBB, TI->getSuccessor(1));
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BI->eraseFromParent();
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MDNode *Weights = MDBuilder(Ctx).createBranchWeights(42, 13);
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BI = Builder.CreateCondBr(Builder.getTrue(), TBB, FBB, Weights);
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TI = BB->getTerminator();
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EXPECT_EQ(BI, TI);
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EXPECT_EQ(2u, TI->getNumSuccessors());
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EXPECT_EQ(TBB, TI->getSuccessor(0));
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EXPECT_EQ(FBB, TI->getSuccessor(1));
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EXPECT_EQ(Weights, TI->getMetadata(LLVMContext::MD_prof));
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}
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TEST_F(IRBuilderTest, LandingPadName) {
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IRBuilder<> Builder(BB);
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LandingPadInst *LP = Builder.CreateLandingPad(Builder.getInt32Ty(), 0, "LP");
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EXPECT_EQ(LP->getName(), "LP");
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}
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TEST_F(IRBuilderTest, DataLayout) {
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std::unique_ptr<Module> M(new Module("test", Ctx));
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M->setDataLayout("e-n32");
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EXPECT_TRUE(M->getDataLayout().isLegalInteger(32));
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M->setDataLayout("e");
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EXPECT_FALSE(M->getDataLayout().isLegalInteger(32));
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}
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TEST_F(IRBuilderTest, GetIntTy) {
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IRBuilder<> Builder(BB);
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IntegerType *Ty1 = Builder.getInt1Ty();
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EXPECT_EQ(Ty1, IntegerType::get(Ctx, 1));
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DataLayout* DL = new DataLayout(M.get());
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IntegerType *IntPtrTy = Builder.getIntPtrTy(*DL);
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unsigned IntPtrBitSize = DL->getPointerSizeInBits(0);
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EXPECT_EQ(IntPtrTy, IntegerType::get(Ctx, IntPtrBitSize));
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delete DL;
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}
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TEST_F(IRBuilderTest, FastMathFlags) {
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IRBuilder<> Builder(BB);
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Value *F, *FC;
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Instruction *FDiv, *FAdd, *FCmp, *FCall;
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F = Builder.CreateLoad(GV);
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F = Builder.CreateFAdd(F, F);
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EXPECT_FALSE(Builder.getFastMathFlags().any());
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ASSERT_TRUE(isa<Instruction>(F));
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FAdd = cast<Instruction>(F);
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EXPECT_FALSE(FAdd->hasNoNaNs());
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FastMathFlags FMF;
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Builder.setFastMathFlags(FMF);
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F = Builder.CreateFAdd(F, F);
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EXPECT_FALSE(Builder.getFastMathFlags().any());
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FMF.setUnsafeAlgebra();
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Builder.setFastMathFlags(FMF);
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F = Builder.CreateFAdd(F, F);
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EXPECT_TRUE(Builder.getFastMathFlags().any());
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ASSERT_TRUE(isa<Instruction>(F));
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FAdd = cast<Instruction>(F);
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EXPECT_TRUE(FAdd->hasNoNaNs());
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// Now, try it with CreateBinOp
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F = Builder.CreateBinOp(Instruction::FAdd, F, F);
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EXPECT_TRUE(Builder.getFastMathFlags().any());
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ASSERT_TRUE(isa<Instruction>(F));
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FAdd = cast<Instruction>(F);
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EXPECT_TRUE(FAdd->hasNoNaNs());
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F = Builder.CreateFDiv(F, F);
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EXPECT_TRUE(Builder.getFastMathFlags().any());
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EXPECT_TRUE(Builder.getFastMathFlags().UnsafeAlgebra);
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ASSERT_TRUE(isa<Instruction>(F));
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FDiv = cast<Instruction>(F);
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EXPECT_TRUE(FDiv->hasAllowReciprocal());
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Builder.clearFastMathFlags();
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F = Builder.CreateFDiv(F, F);
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ASSERT_TRUE(isa<Instruction>(F));
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FDiv = cast<Instruction>(F);
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EXPECT_FALSE(FDiv->hasAllowReciprocal());
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FMF.clear();
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FMF.setAllowReciprocal();
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Builder.setFastMathFlags(FMF);
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F = Builder.CreateFDiv(F, F);
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EXPECT_TRUE(Builder.getFastMathFlags().any());
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EXPECT_TRUE(Builder.getFastMathFlags().AllowReciprocal);
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ASSERT_TRUE(isa<Instruction>(F));
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FDiv = cast<Instruction>(F);
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EXPECT_TRUE(FDiv->hasAllowReciprocal());
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Builder.clearFastMathFlags();
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FC = Builder.CreateFCmpOEQ(F, F);
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ASSERT_TRUE(isa<Instruction>(FC));
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FCmp = cast<Instruction>(FC);
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EXPECT_FALSE(FCmp->hasAllowReciprocal());
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FMF.clear();
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FMF.setAllowReciprocal();
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Builder.setFastMathFlags(FMF);
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FC = Builder.CreateFCmpOEQ(F, F);
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EXPECT_TRUE(Builder.getFastMathFlags().any());
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EXPECT_TRUE(Builder.getFastMathFlags().AllowReciprocal);
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ASSERT_TRUE(isa<Instruction>(FC));
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FCmp = cast<Instruction>(FC);
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EXPECT_TRUE(FCmp->hasAllowReciprocal());
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Builder.clearFastMathFlags();
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// Test a call with FMF.
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auto CalleeTy = FunctionType::get(Type::getFloatTy(Ctx),
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/*isVarArg=*/false);
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auto Callee =
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Function::Create(CalleeTy, Function::ExternalLinkage, "", M.get());
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FCall = Builder.CreateCall(Callee, None);
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EXPECT_FALSE(FCall->hasNoNaNs());
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Value *V =
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Function::Create(CalleeTy, Function::ExternalLinkage, "", M.get());
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FCall = Builder.CreateCall(V, None);
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EXPECT_FALSE(FCall->hasNoNaNs());
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FMF.clear();
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FMF.setNoNaNs();
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Builder.setFastMathFlags(FMF);
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FCall = Builder.CreateCall(Callee, None);
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EXPECT_TRUE(Builder.getFastMathFlags().any());
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EXPECT_TRUE(Builder.getFastMathFlags().NoNaNs);
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EXPECT_TRUE(FCall->hasNoNaNs());
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FCall = Builder.CreateCall(V, None);
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EXPECT_TRUE(Builder.getFastMathFlags().any());
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EXPECT_TRUE(Builder.getFastMathFlags().NoNaNs);
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EXPECT_TRUE(FCall->hasNoNaNs());
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Builder.clearFastMathFlags();
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// To test a copy, make sure that a '0' and a '1' change state.
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F = Builder.CreateFDiv(F, F);
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ASSERT_TRUE(isa<Instruction>(F));
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FDiv = cast<Instruction>(F);
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EXPECT_FALSE(FDiv->getFastMathFlags().any());
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FDiv->setHasAllowReciprocal(true);
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FAdd->setHasAllowReciprocal(false);
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FDiv->copyFastMathFlags(FAdd);
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EXPECT_TRUE(FDiv->hasNoNaNs());
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EXPECT_FALSE(FDiv->hasAllowReciprocal());
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}
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TEST_F(IRBuilderTest, WrapFlags) {
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IRBuilder<NoFolder> Builder(BB);
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// Test instructions.
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GlobalVariable *G = new GlobalVariable(*M, Builder.getInt32Ty(), true,
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GlobalValue::ExternalLinkage, nullptr);
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Value *V = Builder.CreateLoad(G);
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EXPECT_TRUE(
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cast<BinaryOperator>(Builder.CreateNSWAdd(V, V))->hasNoSignedWrap());
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EXPECT_TRUE(
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cast<BinaryOperator>(Builder.CreateNSWMul(V, V))->hasNoSignedWrap());
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EXPECT_TRUE(
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cast<BinaryOperator>(Builder.CreateNSWSub(V, V))->hasNoSignedWrap());
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EXPECT_TRUE(cast<BinaryOperator>(
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Builder.CreateShl(V, V, "", /* NUW */ false, /* NSW */ true))
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->hasNoSignedWrap());
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EXPECT_TRUE(
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cast<BinaryOperator>(Builder.CreateNUWAdd(V, V))->hasNoUnsignedWrap());
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EXPECT_TRUE(
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cast<BinaryOperator>(Builder.CreateNUWMul(V, V))->hasNoUnsignedWrap());
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EXPECT_TRUE(
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cast<BinaryOperator>(Builder.CreateNUWSub(V, V))->hasNoUnsignedWrap());
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EXPECT_TRUE(cast<BinaryOperator>(
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Builder.CreateShl(V, V, "", /* NUW */ true, /* NSW */ false))
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->hasNoUnsignedWrap());
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// Test operators created with constants.
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Constant *C = Builder.getInt32(42);
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EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNSWAdd(C, C))
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->hasNoSignedWrap());
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EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNSWSub(C, C))
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->hasNoSignedWrap());
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EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNSWMul(C, C))
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->hasNoSignedWrap());
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EXPECT_TRUE(cast<OverflowingBinaryOperator>(
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Builder.CreateShl(C, C, "", /* NUW */ false, /* NSW */ true))
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->hasNoSignedWrap());
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EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNUWAdd(C, C))
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->hasNoUnsignedWrap());
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EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNUWSub(C, C))
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->hasNoUnsignedWrap());
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EXPECT_TRUE(cast<OverflowingBinaryOperator>(Builder.CreateNUWMul(C, C))
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->hasNoUnsignedWrap());
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EXPECT_TRUE(cast<OverflowingBinaryOperator>(
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Builder.CreateShl(C, C, "", /* NUW */ true, /* NSW */ false))
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->hasNoUnsignedWrap());
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}
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TEST_F(IRBuilderTest, RAIIHelpersTest) {
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IRBuilder<> Builder(BB);
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EXPECT_FALSE(Builder.getFastMathFlags().allowReciprocal());
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MDBuilder MDB(M->getContext());
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MDNode *FPMathA = MDB.createFPMath(0.01f);
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MDNode *FPMathB = MDB.createFPMath(0.1f);
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Builder.setDefaultFPMathTag(FPMathA);
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{
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IRBuilder<>::FastMathFlagGuard Guard(Builder);
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FastMathFlags FMF;
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FMF.setAllowReciprocal();
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Builder.setFastMathFlags(FMF);
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Builder.setDefaultFPMathTag(FPMathB);
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EXPECT_TRUE(Builder.getFastMathFlags().allowReciprocal());
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EXPECT_EQ(FPMathB, Builder.getDefaultFPMathTag());
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}
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EXPECT_FALSE(Builder.getFastMathFlags().allowReciprocal());
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EXPECT_EQ(FPMathA, Builder.getDefaultFPMathTag());
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Value *F = Builder.CreateLoad(GV);
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{
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IRBuilder<>::InsertPointGuard Guard(Builder);
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Builder.SetInsertPoint(cast<Instruction>(F));
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EXPECT_EQ(F, &*Builder.GetInsertPoint());
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}
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EXPECT_EQ(BB->end(), Builder.GetInsertPoint());
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EXPECT_EQ(BB, Builder.GetInsertBlock());
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}
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TEST_F(IRBuilderTest, DIBuilder) {
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IRBuilder<> Builder(BB);
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DIBuilder DIB(*M);
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auto File = DIB.createFile("F.CBL", "/");
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auto CU = DIB.createCompileUnit(dwarf::DW_LANG_Cobol74,
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DIB.createFile("F.CBL", "/"), "llvm-cobol74",
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true, "", 0);
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auto Type = DIB.createSubroutineType(DIB.getOrCreateTypeArray(None));
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auto SP = DIB.createFunction(CU, "foo", "", File, 1, Type, false, true, 1,
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DINode::FlagZero, true);
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F->setSubprogram(SP);
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AllocaInst *I = Builder.CreateAlloca(Builder.getInt8Ty());
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auto BarSP = DIB.createFunction(CU, "bar", "", File, 1, Type, false, true, 1,
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DINode::FlagZero, true);
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auto BadScope = DIB.createLexicalBlockFile(BarSP, File, 0);
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I->setDebugLoc(DebugLoc::get(2, 0, BadScope));
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DIB.finalize();
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EXPECT_TRUE(verifyModule(*M));
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}
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TEST_F(IRBuilderTest, InsertExtractElement) {
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IRBuilder<> Builder(BB);
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auto VecTy = VectorType::get(Builder.getInt64Ty(), 4);
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auto Elt1 = Builder.getInt64(-1);
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auto Elt2 = Builder.getInt64(-2);
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Value *Vec = UndefValue::get(VecTy);
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Vec = Builder.CreateInsertElement(Vec, Elt1, Builder.getInt8(1));
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Vec = Builder.CreateInsertElement(Vec, Elt2, 2);
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auto X1 = Builder.CreateExtractElement(Vec, 1);
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auto X2 = Builder.CreateExtractElement(Vec, Builder.getInt32(2));
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EXPECT_EQ(Elt1, X1);
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EXPECT_EQ(Elt2, X2);
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}
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TEST_F(IRBuilderTest, CreateGlobalStringPtr) {
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IRBuilder<> Builder(BB);
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auto String1a = Builder.CreateGlobalStringPtr("TestString", "String1a");
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auto String1b = Builder.CreateGlobalStringPtr("TestString", "String1b", 0);
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auto String2 = Builder.CreateGlobalStringPtr("TestString", "String2", 1);
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auto String3 = Builder.CreateGlobalString("TestString", "String3", 2);
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EXPECT_TRUE(String1a->getType()->getPointerAddressSpace() == 0);
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EXPECT_TRUE(String1b->getType()->getPointerAddressSpace() == 0);
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EXPECT_TRUE(String2->getType()->getPointerAddressSpace() == 1);
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EXPECT_TRUE(String3->getType()->getPointerAddressSpace() == 2);
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}
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TEST_F(IRBuilderTest, DebugLoc) {
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auto CalleeTy = FunctionType::get(Type::getVoidTy(Ctx),
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/*isVarArg=*/false);
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auto Callee =
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Function::Create(CalleeTy, Function::ExternalLinkage, "", M.get());
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DIBuilder DIB(*M);
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auto File = DIB.createFile("tmp.cpp", "/");
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auto CU = DIB.createCompileUnit(dwarf::DW_LANG_C_plus_plus_11,
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DIB.createFile("tmp.cpp", "/"), "", true, "",
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0);
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auto SPType = DIB.createSubroutineType(DIB.getOrCreateTypeArray(None));
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auto SP =
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DIB.createFunction(CU, "foo", "foo", File, 1, SPType, false, true, 1);
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DebugLoc DL1 = DILocation::get(Ctx, 2, 0, SP);
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DebugLoc DL2 = DILocation::get(Ctx, 3, 0, SP);
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auto BB2 = BasicBlock::Create(Ctx, "bb2", F);
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auto Br = BranchInst::Create(BB2, BB);
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Br->setDebugLoc(DL1);
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IRBuilder<> Builder(Ctx);
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Builder.SetInsertPoint(Br);
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EXPECT_EQ(DL1, Builder.getCurrentDebugLocation());
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auto Call1 = Builder.CreateCall(Callee, None);
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EXPECT_EQ(DL1, Call1->getDebugLoc());
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Call1->setDebugLoc(DL2);
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Builder.SetInsertPoint(Call1->getParent(), Call1->getIterator());
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EXPECT_EQ(DL2, Builder.getCurrentDebugLocation());
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auto Call2 = Builder.CreateCall(Callee, None);
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EXPECT_EQ(DL2, Call2->getDebugLoc());
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DIB.finalize();
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}
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TEST_F(IRBuilderTest, DIImportedEntity) {
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IRBuilder<> Builder(BB);
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DIBuilder DIB(*M);
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auto CU = DIB.createCompileUnit(dwarf::DW_LANG_Cobol74,
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DIB.createFile("F.CBL", "/"), "llvm-cobol74",
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true, "", 0);
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DIB.createImportedDeclaration(CU, nullptr, 1);
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DIB.createImportedDeclaration(CU, nullptr, 1);
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DIB.createImportedModule(CU, (DIImportedEntity *)nullptr, 2);
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DIB.createImportedModule(CU, (DIImportedEntity *)nullptr, 2);
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DIB.finalize();
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EXPECT_TRUE(verifyModule(*M));
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EXPECT_TRUE(CU->getImportedEntities().size() == 2);
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}
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// 0: #define M0 V0 <-- command line definition
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// 0: main.c <-- main file
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// 3: #define M1 V1 <-- M1 definition in main.c
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// 5: #include "file.h" <-- inclusion of file.h from main.c
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// 1: #define M2 <-- M2 definition in file.h with no value
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// 7: #undef M1 V1 <-- M1 un-definition in main.c
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TEST_F(IRBuilderTest, DIBuilderMacro) {
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IRBuilder<> Builder(BB);
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DIBuilder DIB(*M);
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auto File1 = DIB.createFile("main.c", "/");
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auto File2 = DIB.createFile("file.h", "/");
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auto CU = DIB.createCompileUnit(
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dwarf::DW_LANG_C, DIB.createFile("main.c", "/"), "llvm-c", true, "", 0);
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auto MDef0 =
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DIB.createMacro(nullptr, 0, dwarf::DW_MACINFO_define, "M0", "V0");
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auto TMF1 = DIB.createTempMacroFile(nullptr, 0, File1);
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auto MDef1 = DIB.createMacro(TMF1, 3, dwarf::DW_MACINFO_define, "M1", "V1");
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auto TMF2 = DIB.createTempMacroFile(TMF1, 5, File2);
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auto MDef2 = DIB.createMacro(TMF2, 1, dwarf::DW_MACINFO_define, "M2");
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auto MUndef1 = DIB.createMacro(TMF1, 7, dwarf::DW_MACINFO_undef, "M1");
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|
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EXPECT_EQ(dwarf::DW_MACINFO_define, MDef1->getMacinfoType());
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EXPECT_EQ(3u, MDef1->getLine());
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EXPECT_EQ("M1", MDef1->getName());
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EXPECT_EQ("V1", MDef1->getValue());
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|
|
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EXPECT_EQ(dwarf::DW_MACINFO_undef, MUndef1->getMacinfoType());
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EXPECT_EQ(7u, MUndef1->getLine());
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EXPECT_EQ("M1", MUndef1->getName());
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|
EXPECT_EQ("", MUndef1->getValue());
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|
|
|
EXPECT_EQ(dwarf::DW_MACINFO_start_file, TMF2->getMacinfoType());
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|
EXPECT_EQ(5u, TMF2->getLine());
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|
EXPECT_EQ(File2, TMF2->getFile());
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|
|
|
DIB.finalize();
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|
|
|
SmallVector<Metadata *, 4> Elements;
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|
Elements.push_back(MDef2);
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|
auto MF2 = DIMacroFile::get(Ctx, dwarf::DW_MACINFO_start_file, 5, File2,
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|
DIB.getOrCreateMacroArray(Elements));
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|
|
|
Elements.clear();
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|
Elements.push_back(MDef1);
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|
Elements.push_back(MF2);
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|
Elements.push_back(MUndef1);
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|
auto MF1 = DIMacroFile::get(Ctx, dwarf::DW_MACINFO_start_file, 0, File1,
|
|
DIB.getOrCreateMacroArray(Elements));
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|
|
|
Elements.clear();
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|
Elements.push_back(MDef0);
|
|
Elements.push_back(MF1);
|
|
auto MN0 = MDTuple::get(Ctx, Elements);
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|
EXPECT_EQ(MN0, CU->getRawMacros());
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|
|
|
Elements.clear();
|
|
Elements.push_back(MDef1);
|
|
Elements.push_back(MF2);
|
|
Elements.push_back(MUndef1);
|
|
auto MN1 = MDTuple::get(Ctx, Elements);
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|
EXPECT_EQ(MN1, MF1->getRawElements());
|
|
|
|
Elements.clear();
|
|
Elements.push_back(MDef2);
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|
auto MN2 = MDTuple::get(Ctx, Elements);
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|
EXPECT_EQ(MN2, MF2->getRawElements());
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|
EXPECT_TRUE(verifyModule(*M));
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|
}
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|
}
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