1 //===--- ExecuteCompilerInvocation.cpp ------------------------------------===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // This file holds ExecuteCompilerInvocation(). It is split into its own file to
10 // minimize the impact of pulling in essentially everything else in Clang.
12 //===----------------------------------------------------------------------===//
14 #include "clang/ARCMigrate/ARCMTActions.h"
15 #include "clang/CodeGen/CodeGenAction.h"
16 #include "clang/Config/config.h"
17 #include "clang/Driver/Options.h"
18 #include "clang/Frontend/CompilerInstance.h"
19 #include "clang/Frontend/CompilerInvocation.h"
20 #include "clang/Frontend/FrontendActions.h"
21 #include "clang/Frontend/FrontendDiagnostic.h"
22 #include "clang/Frontend/FrontendPluginRegistry.h"
23 #include "clang/Frontend/Utils.h"
24 #include "clang/FrontendTool/Utils.h"
25 #include "clang/Rewrite/Frontend/FrontendActions.h"
26 #include "clang/StaticAnalyzer/Frontend/FrontendActions.h"
27 #include "llvm/Option/OptTable.h"
28 #include "llvm/Option/Option.h"
29 #include "llvm/Support/BuryPointer.h"
30 #include "llvm/Support/DynamicLibrary.h"
31 #include "llvm/Support/ErrorHandling.h"
32 using namespace clang;
33 using namespace llvm::opt;
37 static std::unique_ptr<FrontendAction>
38 CreateFrontendBaseAction(CompilerInstance &CI) {
39 using namespace clang::frontend;
40 StringRef Action("unknown");
43 switch (CI.getFrontendOpts().ProgramAction) {
44 case ASTDeclList: return llvm::make_unique<ASTDeclListAction>();
45 case ASTDump: return llvm::make_unique<ASTDumpAction>();
46 case ASTPrint: return llvm::make_unique<ASTPrintAction>();
47 case ASTView: return llvm::make_unique<ASTViewAction>();
48 case DumpCompilerOptions:
49 return llvm::make_unique<DumpCompilerOptionsAction>();
50 case DumpRawTokens: return llvm::make_unique<DumpRawTokensAction>();
51 case DumpTokens: return llvm::make_unique<DumpTokensAction>();
52 case EmitAssembly: return llvm::make_unique<EmitAssemblyAction>();
53 case EmitBC: return llvm::make_unique<EmitBCAction>();
54 case EmitHTML: return llvm::make_unique<HTMLPrintAction>();
55 case EmitLLVM: return llvm::make_unique<EmitLLVMAction>();
56 case EmitLLVMOnly: return llvm::make_unique<EmitLLVMOnlyAction>();
57 case EmitCodeGenOnly: return llvm::make_unique<EmitCodeGenOnlyAction>();
58 case EmitObj: return llvm::make_unique<EmitObjAction>();
59 case FixIt: return llvm::make_unique<FixItAction>();
61 return llvm::make_unique<GenerateModuleFromModuleMapAction>();
62 case GenerateModuleInterface:
63 return llvm::make_unique<GenerateModuleInterfaceAction>();
64 case GenerateHeaderModule:
65 return llvm::make_unique<GenerateHeaderModuleAction>();
66 case GeneratePCH: return llvm::make_unique<GeneratePCHAction>();
67 case GenerateInterfaceYAMLExpV1:
68 return llvm::make_unique<GenerateInterfaceYAMLExpV1Action>();
69 case GenerateInterfaceTBEExpV1:
70 return llvm::make_unique<GenerateInterfaceTBEExpV1Action>();
71 case InitOnly: return llvm::make_unique<InitOnlyAction>();
72 case ParseSyntaxOnly: return llvm::make_unique<SyntaxOnlyAction>();
73 case ModuleFileInfo: return llvm::make_unique<DumpModuleInfoAction>();
74 case VerifyPCH: return llvm::make_unique<VerifyPCHAction>();
75 case TemplightDump: return llvm::make_unique<TemplightDumpAction>();
78 for (FrontendPluginRegistry::iterator it =
79 FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end();
81 if (it->getName() == CI.getFrontendOpts().ActionName) {
82 std::unique_ptr<PluginASTAction> P(it->instantiate());
83 if ((P->getActionType() != PluginASTAction::ReplaceAction &&
84 P->getActionType() != PluginASTAction::Cmdline) ||
85 !P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs[it->getName()]))
91 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name)
92 << CI.getFrontendOpts().ActionName;
96 case PrintPreamble: return llvm::make_unique<PrintPreambleAction>();
97 case PrintPreprocessedInput: {
98 if (CI.getPreprocessorOutputOpts().RewriteIncludes ||
99 CI.getPreprocessorOutputOpts().RewriteImports)
100 return llvm::make_unique<RewriteIncludesAction>();
101 return llvm::make_unique<PrintPreprocessedAction>();
104 case RewriteMacros: return llvm::make_unique<RewriteMacrosAction>();
105 case RewriteTest: return llvm::make_unique<RewriteTestAction>();
106 #if CLANG_ENABLE_OBJC_REWRITER
107 case RewriteObjC: return llvm::make_unique<RewriteObjCAction>();
109 case RewriteObjC: Action = "RewriteObjC"; break;
111 #if CLANG_ENABLE_ARCMT
113 return llvm::make_unique<arcmt::MigrateSourceAction>();
115 case MigrateSource: Action = "MigrateSource"; break;
117 #if CLANG_ENABLE_STATIC_ANALYZER
118 case RunAnalysis: return llvm::make_unique<ento::AnalysisAction>();
120 case RunAnalysis: Action = "RunAnalysis"; break;
122 case RunPreprocessorOnly: return llvm::make_unique<PreprocessOnlyAction>();
123 case PrintDependencyDirectivesSourceMinimizerOutput:
124 return llvm::make_unique<PrintDependencyDirectivesSourceMinimizerAction>();
127 #if !CLANG_ENABLE_ARCMT || !CLANG_ENABLE_STATIC_ANALYZER \
128 || !CLANG_ENABLE_OBJC_REWRITER
129 CI.getDiagnostics().Report(diag::err_fe_action_not_available) << Action;
132 llvm_unreachable("Invalid program action!");
136 std::unique_ptr<FrontendAction>
137 CreateFrontendAction(CompilerInstance &CI) {
138 // Create the underlying action.
139 std::unique_ptr<FrontendAction> Act = CreateFrontendBaseAction(CI);
143 const FrontendOptions &FEOpts = CI.getFrontendOpts();
145 if (FEOpts.FixAndRecompile) {
146 Act = llvm::make_unique<FixItRecompile>(std::move(Act));
149 #if CLANG_ENABLE_ARCMT
150 if (CI.getFrontendOpts().ProgramAction != frontend::MigrateSource &&
151 CI.getFrontendOpts().ProgramAction != frontend::GeneratePCH) {
152 // Potentially wrap the base FE action in an ARC Migrate Tool action.
153 switch (FEOpts.ARCMTAction) {
154 case FrontendOptions::ARCMT_None:
156 case FrontendOptions::ARCMT_Check:
157 Act = llvm::make_unique<arcmt::CheckAction>(std::move(Act));
159 case FrontendOptions::ARCMT_Modify:
160 Act = llvm::make_unique<arcmt::ModifyAction>(std::move(Act));
162 case FrontendOptions::ARCMT_Migrate:
163 Act = llvm::make_unique<arcmt::MigrateAction>(std::move(Act),
165 FEOpts.ARCMTMigrateReportOut,
166 FEOpts.ARCMTMigrateEmitARCErrors);
170 if (FEOpts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
171 Act = llvm::make_unique<arcmt::ObjCMigrateAction>(std::move(Act),
173 FEOpts.ObjCMTAction);
178 // If there are any AST files to merge, create a frontend action
179 // adaptor to perform the merge.
180 if (!FEOpts.ASTMergeFiles.empty())
181 Act = llvm::make_unique<ASTMergeAction>(std::move(Act),
182 FEOpts.ASTMergeFiles);
187 bool ExecuteCompilerInvocation(CompilerInstance *Clang) {
189 if (Clang->getFrontendOpts().ShowHelp) {
190 std::unique_ptr<OptTable> Opts = driver::createDriverOptTable();
191 Opts->PrintHelp(llvm::outs(), "clang -cc1 [options] file...",
192 "LLVM 'Clang' Compiler: http://clang.llvm.org",
193 /*Include=*/driver::options::CC1Option,
194 /*Exclude=*/0, /*ShowAllAliases=*/false);
200 // FIXME: Use a better -version message?
201 if (Clang->getFrontendOpts().ShowVersion) {
202 llvm::cl::PrintVersionMessage();
206 // Load any requested plugins.
208 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) {
209 const std::string &Path = Clang->getFrontendOpts().Plugins[i];
211 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error))
212 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin)
216 // Check if any of the loaded plugins replaces the main AST action
217 for (FrontendPluginRegistry::iterator it = FrontendPluginRegistry::begin(),
218 ie = FrontendPluginRegistry::end();
220 std::unique_ptr<PluginASTAction> P(it->instantiate());
221 if (P->getActionType() == PluginASTAction::ReplaceAction) {
222 Clang->getFrontendOpts().ProgramAction = clang::frontend::PluginAction;
223 Clang->getFrontendOpts().ActionName = it->getName();
230 // FIXME: Remove this, one day.
231 // This should happen AFTER plugins have been loaded!
232 if (!Clang->getFrontendOpts().LLVMArgs.empty()) {
233 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size();
234 auto Args = llvm::make_unique<const char*[]>(NumArgs + 2);
235 Args[0] = "clang (LLVM option parsing)";
236 for (unsigned i = 0; i != NumArgs; ++i)
237 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str();
238 Args[NumArgs + 1] = nullptr;
239 llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args.get());
242 #if CLANG_ENABLE_STATIC_ANALYZER
243 // These should happen AFTER plugins have been loaded!
245 AnalyzerOptions &AnOpts = *Clang->getAnalyzerOpts();
246 // Honor -analyzer-checker-help and -analyzer-checker-help-hidden.
247 if (AnOpts.ShowCheckerHelp || AnOpts.ShowCheckerHelpAlpha ||
248 AnOpts.ShowCheckerHelpDeveloper) {
249 ento::printCheckerHelp(llvm::outs(),
250 Clang->getFrontendOpts().Plugins,
252 Clang->getDiagnostics(),
253 Clang->getLangOpts());
257 // Honor -analyzer-checker-option-help.
258 if (AnOpts.ShowCheckerOptionList || AnOpts.ShowCheckerOptionAlphaList ||
259 AnOpts.ShowCheckerOptionDeveloperList) {
260 ento::printCheckerConfigList(llvm::outs(),
261 Clang->getFrontendOpts().Plugins,
262 *Clang->getAnalyzerOpts(),
263 Clang->getDiagnostics(),
264 Clang->getLangOpts());
268 // Honor -analyzer-list-enabled-checkers.
269 if (AnOpts.ShowEnabledCheckerList) {
270 ento::printEnabledCheckerList(llvm::outs(),
271 Clang->getFrontendOpts().Plugins,
273 Clang->getDiagnostics(),
274 Clang->getLangOpts());
277 // Honor -analyzer-config-help.
278 if (AnOpts.ShowConfigOptionsList) {
279 ento::printAnalyzerConfigList(llvm::outs());
284 // If there were errors in processing arguments, don't do anything else.
285 if (Clang->getDiagnostics().hasErrorOccurred())
287 // Create and execute the frontend action.
288 std::unique_ptr<FrontendAction> Act(CreateFrontendAction(*Clang));
291 bool Success = Clang->ExecuteAction(*Act);
292 if (Clang->getFrontendOpts().DisableFree)
293 llvm::BuryPointer(std::move(Act));