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139 lines
3.8 KiB
C++
139 lines
3.8 KiB
C++
//===- InjectorIRStrategyTest.cpp - Tests for injector strategy -----------===//
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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/ADT/StringRef.h"
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#include "llvm/AsmParser/Parser.h"
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#include "llvm/AsmParser/SlotMapping.h"
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#include "llvm/FuzzMutate/IRMutator.h"
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#include "llvm/FuzzMutate/Operations.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 "llvm/IR/Verifier.h"
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#include "llvm/Support/SourceMgr.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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static constexpr int Seed = 5;
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namespace {
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std::unique_ptr<IRMutator> createInjectorMutator() {
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std::vector<TypeGetter> Types{
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Type::getInt1Ty, Type::getInt8Ty, Type::getInt16Ty, Type::getInt32Ty,
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Type::getInt64Ty, Type::getFloatTy, Type::getDoubleTy};
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std::vector<std::unique_ptr<IRMutationStrategy>> Strategies;
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Strategies.push_back(
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llvm::make_unique<InjectorIRStrategy>(
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InjectorIRStrategy::getDefaultOps()));
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return llvm::make_unique<IRMutator>(std::move(Types), std::move(Strategies));
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}
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std::unique_ptr<IRMutator> createDeleterMutator() {
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std::vector<TypeGetter> Types{
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Type::getInt1Ty, Type::getInt8Ty, Type::getInt16Ty, Type::getInt32Ty,
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Type::getInt64Ty, Type::getFloatTy, Type::getDoubleTy};
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std::vector<std::unique_ptr<IRMutationStrategy>> Strategies;
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Strategies.push_back(llvm::make_unique<InstDeleterIRStrategy>());
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return llvm::make_unique<IRMutator>(std::move(Types), std::move(Strategies));
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}
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std::unique_ptr<Module> parseAssembly(
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const char *Assembly, LLVMContext &Context) {
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SMDiagnostic Error;
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std::unique_ptr<Module> M = parseAssemblyString(Assembly, Error, Context);
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std::string ErrMsg;
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raw_string_ostream OS(ErrMsg);
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Error.print("", OS);
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assert(M && !verifyModule(*M, &errs()));
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return M;
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}
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void IterateOnSource(StringRef Source, IRMutator &Mutator) {
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LLVMContext Ctx;
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for (int i = 0; i < 10; ++i) {
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auto M = parseAssembly(Source.data(), Ctx);
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ASSERT_TRUE(M && !verifyModule(*M, &errs()));
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Mutator.mutateModule(*M, Seed, Source.size(), Source.size() + 100);
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EXPECT_TRUE(!verifyModule(*M, &errs()));
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}
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}
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TEST(InjectorIRStrategyTest, EmptyModule) {
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// Test that we can inject into empty module
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LLVMContext Ctx;
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auto M = llvm::make_unique<Module>("M", Ctx);
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ASSERT_TRUE(M && !verifyModule(*M, &errs()));
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auto Mutator = createInjectorMutator();
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ASSERT_TRUE(Mutator);
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Mutator->mutateModule(*M, Seed, 1, 1);
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EXPECT_TRUE(!verifyModule(*M, &errs()));
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}
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TEST(InstDeleterIRStrategyTest, EmptyFunction) {
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// Test that we don't crash even if we can't remove from one of the functions.
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StringRef Source = ""
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"define <8 x i32> @func1() {\n"
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"ret <8 x i32> undef\n"
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"}\n"
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"\n"
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"define i32 @func2() {\n"
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"%A9 = alloca i32\n"
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"%L6 = load i32, i32* %A9\n"
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"ret i32 %L6\n"
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"}\n";
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auto Mutator = createDeleterMutator();
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ASSERT_TRUE(Mutator);
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IterateOnSource(Source, *Mutator);
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}
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TEST(InstDeleterIRStrategyTest, PhiNodes) {
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// Test that inst deleter works correctly with the phi nodes.
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LLVMContext Ctx;
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StringRef Source = "\n\
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define i32 @earlyreturncrash(i32 %x) {\n\
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entry:\n\
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switch i32 %x, label %sw.epilog [\n\
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i32 1, label %sw.bb1\n\
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]\n\
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\n\
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sw.bb1:\n\
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br label %sw.epilog\n\
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\n\
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sw.epilog:\n\
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%a.0 = phi i32 [ 7, %entry ], [ 9, %sw.bb1 ]\n\
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%b.0 = phi i32 [ 10, %entry ], [ 4, %sw.bb1 ]\n\
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ret i32 %a.0\n\
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}";
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auto Mutator = createDeleterMutator();
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ASSERT_TRUE(Mutator);
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IterateOnSource(Source, *Mutator);
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}
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}
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