Expansions for u/srem, using the udiv expansion. More unit tests for udiv and u/srem.
Fixed issue with Release build.
llvm-svn: 164654
diff --git a/llvm/unittests/Transforms/Utils/IntegerDivision.cpp b/llvm/unittests/Transforms/Utils/IntegerDivision.cpp
index a026b34..e5b84b89 100644
--- a/llvm/unittests/Transforms/Utils/IntegerDivision.cpp
+++ b/llvm/unittests/Transforms/Utils/IntegerDivision.cpp
@@ -51,4 +51,100 @@
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());
+}
+
}