unittests/IR/IRBuilderTest.cpp - external/github.com/llvm-mirror/llvm - Git at Google

 //===- 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/DIBuilder.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 "llvm/IR/Verifier.h"
 #include "gtest/gtest.h"

 using namespace llvm;

 namespace {

 class IRBuilderTest : public testing::Test {
 protected:
   void SetUp() override {
     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);
   }

   void TearDown() override {
     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(), 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, *FC;
   Instruction *FDiv, *FAdd, *FCmp, *FCall;

   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();

   FC = Builder.CreateFCmpOEQ(F, F);
   ASSERT_TRUE(isa<Instruction>(FC));
   FCmp = cast<Instruction>(FC);
   EXPECT_FALSE(FCmp->hasAllowReciprocal());

   FMF.clear();
   FMF.setAllowReciprocal();
   Builder.setFastMathFlags(FMF);

   FC = Builder.CreateFCmpOEQ(F, F);
   EXPECT_TRUE(Builder.getFastMathFlags().any());
   EXPECT_TRUE(Builder.getFastMathFlags().AllowReciprocal);
   ASSERT_TRUE(isa<Instruction>(FC));
   FCmp = cast<Instruction>(FC);
   EXPECT_TRUE(FCmp->hasAllowReciprocal());

   Builder.clearFastMathFlags();

   // Test a call with FMF.
   auto CalleeTy = FunctionType::get(Type::getFloatTy(Ctx),
                                     /*isVarArg=*/false);
   auto Callee =
       Function::Create(CalleeTy, Function::ExternalLinkage, "", M.get());

   FCall = Builder.CreateCall(Callee, None);
   EXPECT_FALSE(FCall->hasNoNaNs());

   Value *V =
       Function::Create(CalleeTy, Function::ExternalLinkage, "", M.get());
   FCall = Builder.CreateCall(V, None);
   EXPECT_FALSE(FCall->hasNoNaNs());

   FMF.clear();
   FMF.setNoNaNs();
   Builder.setFastMathFlags(FMF);

   FCall = Builder.CreateCall(Callee, None);
   EXPECT_TRUE(Builder.getFastMathFlags().any());
   EXPECT_TRUE(Builder.getFastMathFlags().NoNaNs);
   EXPECT_TRUE(FCall->hasNoNaNs());

   FCall = Builder.CreateCall(V, None);
   EXPECT_TRUE(Builder.getFastMathFlags().any());
   EXPECT_TRUE(Builder.getFastMathFlags().NoNaNs);
   EXPECT_TRUE(FCall->hasNoNaNs());

   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());
 }

 TEST_F(IRBuilderTest, DIBuilder) {
   IRBuilder<> Builder(BB);
   DIBuilder DIB(*M);
   auto File = DIB.createFile("F.CBL", "/");
   auto CU = DIB.createCompileUnit(dwarf::DW_LANG_Cobol74, "F.CBL", "/",
                                   "llvm-cobol74", true, "", 0);
   auto Type = DIB.createSubroutineType(DIB.getOrCreateTypeArray(None));
   auto SP =
       DIB.createFunction(CU, "foo", "", File, 1, Type, false, true, 1, 0, true);
   F->setSubprogram(SP);
   AllocaInst *I = Builder.CreateAlloca(Builder.getInt8Ty());
   auto BarSP =
       DIB.createFunction(CU, "bar", "", File, 1, Type, false, true, 1, 0, true);
   auto BadScope = DIB.createLexicalBlockFile(BarSP, File, 0);
   I->setDebugLoc(DebugLoc::get(2, 0, BadScope));
   DIB.finalize();
   EXPECT_TRUE(verifyModule(*M));
 }

 TEST_F(IRBuilderTest, InsertExtractElement) {
   IRBuilder<> Builder(BB);

   auto VecTy = VectorType::get(Builder.getInt64Ty(), 4);
   auto Elt1 = Builder.getInt64(-1);
   auto Elt2 = Builder.getInt64(-2);
   Value *Vec = UndefValue::get(VecTy);
   Vec = Builder.CreateInsertElement(Vec, Elt1, Builder.getInt8(1));
   Vec = Builder.CreateInsertElement(Vec, Elt2, 2);
   auto X1 = Builder.CreateExtractElement(Vec, 1);
   auto X2 = Builder.CreateExtractElement(Vec, Builder.getInt32(2));
   EXPECT_EQ(Elt1, X1);
   EXPECT_EQ(Elt2, X2);
 }

 TEST_F(IRBuilderTest, CreateGlobalStringPtr) {
   IRBuilder<> Builder(BB);

   auto String1a = Builder.CreateGlobalStringPtr("TestString", "String1a");
   auto String1b = Builder.CreateGlobalStringPtr("TestString", "String1b", 0);
   auto String2 = Builder.CreateGlobalStringPtr("TestString", "String2", 1);
   auto String3 = Builder.CreateGlobalString("TestString", "String3", 2);

   EXPECT_TRUE(String1a->getType()->getPointerAddressSpace() == 0);
   EXPECT_TRUE(String1b->getType()->getPointerAddressSpace() == 0);
   EXPECT_TRUE(String2->getType()->getPointerAddressSpace() == 1);
   EXPECT_TRUE(String3->getType()->getPointerAddressSpace() == 2);
 }

 TEST_F(IRBuilderTest, DebugLoc) {
   auto CalleeTy = FunctionType::get(Type::getVoidTy(Ctx),
                                     /*isVarArg=*/false);
   auto Callee =
       Function::Create(CalleeTy, Function::ExternalLinkage, "", M.get());

   DIBuilder DIB(*M);
   auto File = DIB.createFile("tmp.cpp", "/");
   auto CU = DIB.createCompileUnit(dwarf::DW_LANG_C_plus_plus_11, "tmp.cpp", "/",
                                   "", true, "", 0);
   auto SPType = DIB.createSubroutineType(DIB.getOrCreateTypeArray(None));
   auto SP =
       DIB.createFunction(CU, "foo", "foo", File, 1, SPType, false, true, 1);
   DebugLoc DL1 = DILocation::get(Ctx, 2, 0, SP);
   DebugLoc DL2 = DILocation::get(Ctx, 3, 0, SP);

   auto BB2 = BasicBlock::Create(Ctx, "bb2", F);
   auto Br = BranchInst::Create(BB2, BB);
   Br->setDebugLoc(DL1);

   IRBuilder<> Builder(Ctx);
   Builder.SetInsertPoint(Br);
   EXPECT_EQ(DL1, Builder.getCurrentDebugLocation());
   auto Call1 = Builder.CreateCall(Callee, None);
   EXPECT_EQ(DL1, Call1->getDebugLoc());

   Call1->setDebugLoc(DL2);
   Builder.SetInsertPoint(Call1->getParent(), Call1->getIterator());
   EXPECT_EQ(DL2, Builder.getCurrentDebugLocation());
   auto Call2 = Builder.CreateCall(Callee, None);
   EXPECT_EQ(DL2, Call2->getDebugLoc());

   DIB.finalize();
 }
 }
	//===- 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/DIBuilder.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 "llvm/IR/Verifier.h"
	#include "gtest/gtest.h"

	using namespace llvm;

	namespace {

	class IRBuilderTest : public testing::Test {
	protected:
	void SetUp() override {
	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);
	}

	void TearDown() override {
	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(), 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, FC;
	Instruction FDiv, FAdd, FCmp, FCall;

	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();

	FC = Builder.CreateFCmpOEQ(F, F);
	ASSERT_TRUE(isa<Instruction>(FC));
	FCmp = cast<Instruction>(FC);
	EXPECT_FALSE(FCmp->hasAllowReciprocal());

	FMF.clear();
	FMF.setAllowReciprocal();
	Builder.setFastMathFlags(FMF);

	FC = Builder.CreateFCmpOEQ(F, F);
	EXPECT_TRUE(Builder.getFastMathFlags().any());
	EXPECT_TRUE(Builder.getFastMathFlags().AllowReciprocal);
	ASSERT_TRUE(isa<Instruction>(FC));
	FCmp = cast<Instruction>(FC);
	EXPECT_TRUE(FCmp->hasAllowReciprocal());

	Builder.clearFastMathFlags();

	// Test a call with FMF.
	auto CalleeTy = FunctionType::get(Type::getFloatTy(Ctx),
	/isVarArg=/false);
	auto Callee =
	Function::Create(CalleeTy, Function::ExternalLinkage, "", M.get());

	FCall = Builder.CreateCall(Callee, None);
	EXPECT_FALSE(FCall->hasNoNaNs());

	Value *V =
	Function::Create(CalleeTy, Function::ExternalLinkage, "", M.get());
	FCall = Builder.CreateCall(V, None);
	EXPECT_FALSE(FCall->hasNoNaNs());

	FMF.clear();
	FMF.setNoNaNs();
	Builder.setFastMathFlags(FMF);

	FCall = Builder.CreateCall(Callee, None);
	EXPECT_TRUE(Builder.getFastMathFlags().any());
	EXPECT_TRUE(Builder.getFastMathFlags().NoNaNs);
	EXPECT_TRUE(FCall->hasNoNaNs());

	FCall = Builder.CreateCall(V, None);
	EXPECT_TRUE(Builder.getFastMathFlags().any());
	EXPECT_TRUE(Builder.getFastMathFlags().NoNaNs);
	EXPECT_TRUE(FCall->hasNoNaNs());

	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());
	}

	TEST_F(IRBuilderTest, DIBuilder) {
	IRBuilder<> Builder(BB);
	DIBuilder DIB(*M);
	auto File = DIB.createFile("F.CBL", "/");
	auto CU = DIB.createCompileUnit(dwarf::DW_LANG_Cobol74, "F.CBL", "/",
	"llvm-cobol74", true, "", 0);
	auto Type = DIB.createSubroutineType(DIB.getOrCreateTypeArray(None));
	auto SP =
	DIB.createFunction(CU, "foo", "", File, 1, Type, false, true, 1, 0, true);
	F->setSubprogram(SP);
	AllocaInst *I = Builder.CreateAlloca(Builder.getInt8Ty());
	auto BarSP =
	DIB.createFunction(CU, "bar", "", File, 1, Type, false, true, 1, 0, true);
	auto BadScope = DIB.createLexicalBlockFile(BarSP, File, 0);
	I->setDebugLoc(DebugLoc::get(2, 0, BadScope));
	DIB.finalize();
	EXPECT_TRUE(verifyModule(*M));
	}

	TEST_F(IRBuilderTest, InsertExtractElement) {
	IRBuilder<> Builder(BB);

	auto VecTy = VectorType::get(Builder.getInt64Ty(), 4);
	auto Elt1 = Builder.getInt64(-1);
	auto Elt2 = Builder.getInt64(-2);
	Value *Vec = UndefValue::get(VecTy);
	Vec = Builder.CreateInsertElement(Vec, Elt1, Builder.getInt8(1));
	Vec = Builder.CreateInsertElement(Vec, Elt2, 2);
	auto X1 = Builder.CreateExtractElement(Vec, 1);
	auto X2 = Builder.CreateExtractElement(Vec, Builder.getInt32(2));
	EXPECT_EQ(Elt1, X1);
	EXPECT_EQ(Elt2, X2);
	}

	TEST_F(IRBuilderTest, CreateGlobalStringPtr) {
	IRBuilder<> Builder(BB);

	auto String1a = Builder.CreateGlobalStringPtr("TestString", "String1a");
	auto String1b = Builder.CreateGlobalStringPtr("TestString", "String1b", 0);
	auto String2 = Builder.CreateGlobalStringPtr("TestString", "String2", 1);
	auto String3 = Builder.CreateGlobalString("TestString", "String3", 2);

	EXPECT_TRUE(String1a->getType()->getPointerAddressSpace() == 0);
	EXPECT_TRUE(String1b->getType()->getPointerAddressSpace() == 0);
	EXPECT_TRUE(String2->getType()->getPointerAddressSpace() == 1);
	EXPECT_TRUE(String3->getType()->getPointerAddressSpace() == 2);
	}

	TEST_F(IRBuilderTest, DebugLoc) {
	auto CalleeTy = FunctionType::get(Type::getVoidTy(Ctx),
	/isVarArg=/false);
	auto Callee =
	Function::Create(CalleeTy, Function::ExternalLinkage, "", M.get());

	DIBuilder DIB(*M);
	auto File = DIB.createFile("tmp.cpp", "/");
	auto CU = DIB.createCompileUnit(dwarf::DW_LANG_C_plus_plus_11, "tmp.cpp", "/",
	"", true, "", 0);
	auto SPType = DIB.createSubroutineType(DIB.getOrCreateTypeArray(None));
	auto SP =
	DIB.createFunction(CU, "foo", "foo", File, 1, SPType, false, true, 1);
	DebugLoc DL1 = DILocation::get(Ctx, 2, 0, SP);
	DebugLoc DL2 = DILocation::get(Ctx, 3, 0, SP);

	auto BB2 = BasicBlock::Create(Ctx, "bb2", F);
	auto Br = BranchInst::Create(BB2, BB);
	Br->setDebugLoc(DL1);

	IRBuilder<> Builder(Ctx);
	Builder.SetInsertPoint(Br);
	EXPECT_EQ(DL1, Builder.getCurrentDebugLocation());
	auto Call1 = Builder.CreateCall(Callee, None);
	EXPECT_EQ(DL1, Call1->getDebugLoc());

	Call1->setDebugLoc(DL2);
	Builder.SetInsertPoint(Call1->getParent(), Call1->getIterator());
	EXPECT_EQ(DL2, Builder.getCurrentDebugLocation());
	auto Call2 = Builder.CreateCall(Callee, None);
	EXPECT_EQ(DL2, Call2->getDebugLoc());

	DIB.finalize();
	}
	}