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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
130 lines
3.7 KiB
C++
130 lines
3.7 KiB
C++
//===- FunctionComparator.cpp - Unit tests for FunctionComparator ---------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Transforms/Utils/FunctionComparator.h"
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#include "llvm/IR/BasicBlock.h"
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#include "llvm/IR/IRBuilder.h"
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#include "llvm/IR/Instructions.h"
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#include "llvm/IR/LLVMContext.h"
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#include "llvm/IR/Module.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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/// Generates a simple test function.
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struct TestFunction {
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Function *F;
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BasicBlock *BB;
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Constant *C;
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Instruction *I;
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Type *T;
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TestFunction(LLVMContext &Ctx, Module &M, int addVal) {
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IRBuilder<> B(Ctx);
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T = B.getInt8Ty();
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F = Function::Create(FunctionType::get(T, {B.getInt8PtrTy()}, false),
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GlobalValue::ExternalLinkage, "F", &M);
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BB = BasicBlock::Create(Ctx, "", F);
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B.SetInsertPoint(BB);
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Argument *PointerArg = &*F->arg_begin();
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LoadInst *LoadInst = B.CreateLoad(PointerArg);
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C = B.getInt8(addVal);
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I = cast<Instruction>(B.CreateAdd(LoadInst, C));
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B.CreateRet(I);
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}
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};
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/// A class for testing the FunctionComparator API.
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///
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/// The main purpose is to test if the required protected functions are
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/// accessible from a derived class of FunctionComparator.
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class TestComparator : public FunctionComparator {
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public:
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TestComparator(const Function *F1, const Function *F2,
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GlobalNumberState *GN)
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: FunctionComparator(F1, F2, GN) {
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}
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bool testFunctionAccess(const Function *F1, const Function *F2) {
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// Test if FnL and FnR are accessible.
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return F1 == FnL && F2 == FnR;
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}
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int testCompare() {
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return compare();
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}
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int testCompareSignature() {
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beginCompare();
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return compareSignature();
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}
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int testCmpBasicBlocks(BasicBlock *BBL, BasicBlock *BBR) {
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beginCompare();
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return cmpBasicBlocks(BBL, BBR);
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}
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int testCmpConstants(const Constant *L, const Constant *R) {
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beginCompare();
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return cmpConstants(L, R);
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}
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int testCmpGlobalValues(GlobalValue *L, GlobalValue *R) {
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beginCompare();
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return cmpGlobalValues(L, R);
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}
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int testCmpValues(const Value *L, const Value *R) {
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beginCompare();
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return cmpValues(L, R);
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}
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int testCmpOperations(const Instruction *L, const Instruction *R,
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bool &needToCmpOperands) {
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beginCompare();
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return cmpOperations(L, R, needToCmpOperands);
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}
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int testCmpTypes(Type *TyL, Type *TyR) {
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beginCompare();
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return cmpTypes(TyL, TyR);
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}
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int testCmpPrimitives() {
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beginCompare();
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return
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cmpNumbers(2, 3) +
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cmpAPInts(APInt(32, 2), APInt(32, 3)) +
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cmpAPFloats(APFloat(2.0), APFloat(3.0)) +
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cmpMem("2", "3");
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}
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};
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/// A sanity check for the FunctionComparator API.
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TEST(FunctionComparatorTest, TestAPI) {
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LLVMContext C;
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Module M("test", C);
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TestFunction F1(C, M, 27);
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TestFunction F2(C, M, 28);
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GlobalNumberState GN;
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TestComparator Cmp(F1.F, F2.F, &GN);
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EXPECT_TRUE(Cmp.testFunctionAccess(F1.F, F2.F));
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EXPECT_EQ(Cmp.testCompare(), -1);
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EXPECT_EQ(Cmp.testCompareSignature(), 0);
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EXPECT_EQ(Cmp.testCmpBasicBlocks(F1.BB, F2.BB), -1);
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EXPECT_EQ(Cmp.testCmpConstants(F1.C, F2.C), -1);
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EXPECT_EQ(Cmp.testCmpGlobalValues(F1.F, F2.F), -1);
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EXPECT_EQ(Cmp.testCmpValues(F1.I, F2.I), 0);
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bool needToCmpOperands = false;
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EXPECT_EQ(Cmp.testCmpOperations(F1.I, F2.I, needToCmpOperands), 0);
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EXPECT_TRUE(needToCmpOperands);
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EXPECT_EQ(Cmp.testCmpTypes(F1.T, F2.T), 0);
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EXPECT_EQ(Cmp.testCmpPrimitives(), -4);
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}
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