3c08498fe2
CWD is queried in clang driver and passed to clang cc1 via flags when needed. Respect the cc1 flags and do not repeated checking current working directory in CodeGen.
80 lines
2.7 KiB
C++
80 lines
2.7 KiB
C++
//===- unittests/Frontend/CodeGenActionTest.cpp --- FrontendAction tests --===//
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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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//
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// Unit tests for CodeGenAction.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/CodeGen/CodeGenAction.h"
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#include "clang/Basic/LangStandard.h"
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#include "clang/CodeGen/BackendUtil.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Lex/PreprocessorOptions.h"
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#include "llvm/Support/FormatVariadic.h"
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#include "llvm/Support/VirtualFileSystem.h"
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#include "gtest/gtest.h"
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using namespace llvm;
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using namespace clang;
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using namespace clang::frontend;
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namespace {
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class NullCodeGenAction : public CodeGenAction {
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public:
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NullCodeGenAction(llvm::LLVMContext *_VMContext = nullptr)
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: CodeGenAction(Backend_EmitMCNull, _VMContext) {}
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// The action does not call methods of ATContext.
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void ExecuteAction() override {
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CompilerInstance &CI = getCompilerInstance();
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if (!CI.hasPreprocessor())
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return;
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if (!CI.hasSema())
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CI.createSema(getTranslationUnitKind(), nullptr);
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}
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};
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TEST(CodeGenTest, TestNullCodeGen) {
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auto Invocation = std::make_shared<CompilerInvocation>();
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Invocation->getPreprocessorOpts().addRemappedFile(
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"test.cc",
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MemoryBuffer::getMemBuffer("").release());
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Invocation->getFrontendOpts().Inputs.push_back(
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FrontendInputFile("test.cc", Language::CXX));
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Invocation->getFrontendOpts().ProgramAction = EmitLLVM;
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Invocation->getTargetOpts().Triple = "i386-unknown-linux-gnu";
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CompilerInstance Compiler(std::move(Invocation));
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Compiler.createDiagnostics(*llvm::vfs::getRealFileSystem());
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EXPECT_TRUE(Compiler.hasDiagnostics());
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std::unique_ptr<FrontendAction> Act(new NullCodeGenAction);
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bool Success = Compiler.ExecuteAction(*Act);
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EXPECT_TRUE(Success);
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}
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TEST(CodeGenTest, CodeGenFromIRMemBuffer) {
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auto Invocation = std::make_shared<CompilerInvocation>();
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std::unique_ptr<MemoryBuffer> MemBuffer =
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MemoryBuffer::getMemBuffer("", "test.ll");
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Invocation->getFrontendOpts().Inputs.push_back(
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FrontendInputFile(*MemBuffer, Language::LLVM_IR));
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Invocation->getFrontendOpts().ProgramAction = frontend::EmitLLVMOnly;
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Invocation->getTargetOpts().Triple = "i386-unknown-linux-gnu";
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CompilerInstance Compiler(std::move(Invocation));
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Compiler.createDiagnostics(*llvm::vfs::getRealFileSystem());
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EXPECT_TRUE(Compiler.hasDiagnostics());
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EmitLLVMOnlyAction Action;
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bool Success = Compiler.ExecuteAction(Action);
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EXPECT_TRUE(Success);
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}
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}
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