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442ffc346f
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164627 91177308-0d34-0410-b5e6-96231b3b80d8
55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
//===- IntegerDivision.cpp - Unit tests for the integer division code -----===//
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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 "gtest/gtest.h"
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#include "llvm/BasicBlock.h"
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#include "llvm/GlobalValue.h"
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#include "llvm/Function.h"
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#include "llvm/IRBuilder.h"
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#include "llvm/Module.h"
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#include "llvm/Transforms/Utils/IntegerDivision.h"
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using namespace llvm;
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namespace {
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TEST(IntegerDivision, SDiv) {
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LLVMContext &C(getGlobalContext());
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Module M("test division", C);
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IRBuilder<> Builder(C);
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SmallVector<Type*, 2> ArgTys(2, Builder.getInt32Ty());
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Function *F = Function::Create(FunctionType::get(Builder.getInt32Ty(),
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ArgTys, false),
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GlobalValue::ExternalLinkage, "F", &M);
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assert(F->getArgumentList().size() == 2);
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BasicBlock *BB = BasicBlock::Create(C, "", F);
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Builder.SetInsertPoint(BB);
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Function::arg_iterator AI = F->arg_begin();
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Value *A = AI++;
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Value *B = AI++;
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Value *Div = Builder.CreateSDiv(A, B);
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EXPECT_TRUE(BB->front().getOpcode() == Instruction::SDiv);
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Value *Ret = Builder.CreateRet(Div);
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expandDivision(cast<BinaryOperator>(Div));
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EXPECT_TRUE(BB->front().getOpcode() == Instruction::AShr);
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Instruction* Quotient = dyn_cast<Instruction>(cast<User>(Ret)->getOperand(0));
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EXPECT_TRUE(Quotient && Quotient->getOpcode() == Instruction::Sub);
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Builder.SetInsertPoint(BB->end());
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}
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}
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