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Expansions for u/srem, using the udiv expansion. More unit tests for udiv and u/srem.

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Fixed issue with Release build.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164654 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Ilseman
2012-09-26 01:55:01 +00:00
parent 85042e6585
commit b55462bcfb
3 changed files with 221 additions and 7 deletions
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96
unittests/Transforms/Utils/IntegerDivision.cpp
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@ -51,4 +51,100 @@ TEST(IntegerDivision, SDiv) {
Builder.SetInsertPoint(BB->end());
}
TEST(IntegerDivision, UDiv) {
LLVMContext &C(getGlobalContext());
Module M("test division", C);
IRBuilder<> Builder(C);
SmallVector<Type*, 2> ArgTys(2, Builder.getInt32Ty());
Function *F = Function::Create(FunctionType::get(Builder.getInt32Ty(),
ArgTys, false),
GlobalValue::ExternalLinkage, "F", &M);
assert(F->getArgumentList().size() == 2);
BasicBlock *BB = BasicBlock::Create(C, "", F);
Builder.SetInsertPoint(BB);
Function::arg_iterator AI = F->arg_begin();
Value *A = AI++;
Value *B = AI++;
Value *Div = Builder.CreateUDiv(A, B);
EXPECT_TRUE(BB->front().getOpcode() == Instruction::UDiv);
Value *Ret = Builder.CreateRet(Div);
expandDivision(cast<BinaryOperator>(Div));
EXPECT_TRUE(BB->front().getOpcode() == Instruction::ICmp);
Instruction* Quotient = dyn_cast<Instruction>(cast<User>(Ret)->getOperand(0));
EXPECT_TRUE(Quotient && Quotient->getOpcode() == Instruction::PHI);
Builder.SetInsertPoint(BB->end());
}
TEST(IntegerDivision, SRem) {
LLVMContext &C(getGlobalContext());
Module M("test remainder", C);
IRBuilder<> Builder(C);
SmallVector<Type*, 2> ArgTys(2, Builder.getInt32Ty());
Function *F = Function::Create(FunctionType::get(Builder.getInt32Ty(),
ArgTys, false),
GlobalValue::ExternalLinkage, "F", &M);
assert(F->getArgumentList().size() == 2);
BasicBlock *BB = BasicBlock::Create(C, "", F);
Builder.SetInsertPoint(BB);
Function::arg_iterator AI = F->arg_begin();
Value *A = AI++;
Value *B = AI++;
Value *Rem = Builder.CreateSRem(A, B);
EXPECT_TRUE(BB->front().getOpcode() == Instruction::SRem);
Value *Ret = Builder.CreateRet(Rem);
expandRemainder(cast<BinaryOperator>(Rem));
EXPECT_TRUE(BB->front().getOpcode() == Instruction::AShr);
Instruction* Remainder = dyn_cast<Instruction>(cast<User>(Ret)->getOperand(0));
EXPECT_TRUE(Remainder && Remainder->getOpcode() == Instruction::Sub);
Builder.SetInsertPoint(BB->end());
}
TEST(IntegerDivision, URem) {
LLVMContext &C(getGlobalContext());
Module M("test remainder", C);
IRBuilder<> Builder(C);
SmallVector<Type*, 2> ArgTys(2, Builder.getInt32Ty());
Function *F = Function::Create(FunctionType::get(Builder.getInt32Ty(),
ArgTys, false),
GlobalValue::ExternalLinkage, "F", &M);
assert(F->getArgumentList().size() == 2);
BasicBlock *BB = BasicBlock::Create(C, "", F);
Builder.SetInsertPoint(BB);
Function::arg_iterator AI = F->arg_begin();
Value *A = AI++;
Value *B = AI++;
Value *Rem = Builder.CreateURem(A, B);
EXPECT_TRUE(BB->front().getOpcode() == Instruction::URem);
Value *Ret = Builder.CreateRet(Rem);
expandRemainder(cast<BinaryOperator>(Rem));
EXPECT_TRUE(BB->front().getOpcode() == Instruction::ICmp);
Instruction* Remainder = dyn_cast<Instruction>(cast<User>(Ret)->getOperand(0));
EXPECT_TRUE(Remainder && Remainder->getOpcode() == Instruction::Sub);
Builder.SetInsertPoint(BB->end());
}
}