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//===- Cloning.cpp - Unit tests for the Cloner ----------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "gtest/gtest.h"
#include "llvm/Argument.h"
#include "llvm/Constant.h"
#include "llvm/Instructions.h"
#include "llvm/LLVMContext.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/STLExtras.h"
using namespace llvm;
class CloneInstruction : public ::testing::Test {
protected:
virtual void SetUp() {
V = NULL;
}
template <typename T>
T *clone(T *V1) {
Value *V2 = V1->clone();
Orig.insert(V1);
Clones.insert(V2);
return cast<T>(V2);
}
void eraseClones() {
DeleteContainerPointers(Clones);
}
virtual void TearDown() {
eraseClones();
DeleteContainerPointers(Orig);
delete V;
}
SmallPtrSet<Value *, 4> Orig; // Erase on exit
SmallPtrSet<Value *, 4> Clones; // Erase in eraseClones
LLVMContext context;
Value *V;
};
TEST_F(CloneInstruction, OverflowBits) {
V = new Argument(Type::getInt32Ty(context));
BinaryOperator *Add = BinaryOperator::Create(Instruction::Add, V, V);
BinaryOperator *Sub = BinaryOperator::Create(Instruction::Sub, V, V);
BinaryOperator *Mul = BinaryOperator::Create(Instruction::Mul, V, V);
BinaryOperator *AddClone = this->clone(Add);
BinaryOperator *SubClone = this->clone(Sub);
BinaryOperator *MulClone = this->clone(Mul);
EXPECT_FALSE(AddClone->hasNoUnsignedWrap());
EXPECT_FALSE(AddClone->hasNoSignedWrap());
EXPECT_FALSE(SubClone->hasNoUnsignedWrap());
EXPECT_FALSE(SubClone->hasNoSignedWrap());
EXPECT_FALSE(MulClone->hasNoUnsignedWrap());
EXPECT_FALSE(MulClone->hasNoSignedWrap());
eraseClones();
Add->setHasNoUnsignedWrap();
Sub->setHasNoUnsignedWrap();
Mul->setHasNoUnsignedWrap();
AddClone = this->clone(Add);
SubClone = this->clone(Sub);
MulClone = this->clone(Mul);
EXPECT_TRUE(AddClone->hasNoUnsignedWrap());
EXPECT_FALSE(AddClone->hasNoSignedWrap());
EXPECT_TRUE(SubClone->hasNoUnsignedWrap());
EXPECT_FALSE(SubClone->hasNoSignedWrap());
EXPECT_TRUE(MulClone->hasNoUnsignedWrap());
EXPECT_FALSE(MulClone->hasNoSignedWrap());
eraseClones();
Add->setHasNoSignedWrap();
Sub->setHasNoSignedWrap();
Mul->setHasNoSignedWrap();
AddClone = this->clone(Add);
SubClone = this->clone(Sub);
MulClone = this->clone(Mul);
EXPECT_TRUE(AddClone->hasNoUnsignedWrap());
EXPECT_TRUE(AddClone->hasNoSignedWrap());
EXPECT_TRUE(SubClone->hasNoUnsignedWrap());
EXPECT_TRUE(SubClone->hasNoSignedWrap());
EXPECT_TRUE(MulClone->hasNoUnsignedWrap());
EXPECT_TRUE(MulClone->hasNoSignedWrap());
eraseClones();
Add->setHasNoUnsignedWrap(false);
Sub->setHasNoUnsignedWrap(false);
Mul->setHasNoUnsignedWrap(false);
AddClone = this->clone(Add);
SubClone = this->clone(Sub);
MulClone = this->clone(Mul);
EXPECT_FALSE(AddClone->hasNoUnsignedWrap());
EXPECT_TRUE(AddClone->hasNoSignedWrap());
EXPECT_FALSE(SubClone->hasNoUnsignedWrap());
EXPECT_TRUE(SubClone->hasNoSignedWrap());
EXPECT_FALSE(MulClone->hasNoUnsignedWrap());
EXPECT_TRUE(MulClone->hasNoSignedWrap());
}
TEST_F(CloneInstruction, Inbounds) {
V = new Argument(Type::getInt32PtrTy(context));
Constant *Z = Constant::getNullValue(Type::getInt32Ty(context));
std::vector<Value *> ops;
ops.push_back(Z);
GetElementPtrInst *GEP = GetElementPtrInst::Create(V, ops);
EXPECT_FALSE(this->clone(GEP)->isInBounds());
GEP->setIsInBounds();
EXPECT_TRUE(this->clone(GEP)->isInBounds());
}
TEST_F(CloneInstruction, Exact) {
V = new Argument(Type::getInt32Ty(context));
BinaryOperator *SDiv = BinaryOperator::Create(Instruction::SDiv, V, V);
EXPECT_FALSE(this->clone(SDiv)->isExact());
SDiv->setIsExact(true);
EXPECT_TRUE(this->clone(SDiv)->isExact());
}
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