1 //===--- ExecuteCompilerInvocation.cpp ------------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file holds ExecuteCompilerInvocation(). It is split into its own file to
11 // minimize the impact of pulling in essentially everything else in Clang.
13 //===----------------------------------------------------------------------===//
15 #include "clang/FrontendTool/Utils.h"
16 #include "clang/StaticAnalyzer/Frontend/FrontendActions.h"
17 #include "clang/ARCMigrate/ARCMTActions.h"
18 #include "clang/CodeGen/CodeGenAction.h"
19 #include "clang/Driver/CC1Options.h"
20 #include "clang/Driver/OptTable.h"
21 #include "clang/Frontend/CompilerInvocation.h"
22 #include "clang/Frontend/CompilerInstance.h"
23 #include "clang/Frontend/FrontendActions.h"
24 #include "clang/Frontend/FrontendDiagnostic.h"
25 #include "clang/Frontend/FrontendPluginRegistry.h"
26 #include "clang/Rewrite/FrontendActions.h"
27 #include "llvm/Support/ErrorHandling.h"
28 #include "llvm/Support/DynamicLibrary.h"
29 using namespace clang;
31 static FrontendAction *CreateFrontendBaseAction(CompilerInstance &CI) {
32 using namespace clang::frontend;
34 switch (CI.getFrontendOpts().ProgramAction) {
36 llvm_unreachable("Invalid program action!");
38 case ASTDump: return new ASTDumpAction();
39 case ASTDumpXML: return new ASTDumpXMLAction();
40 case ASTPrint: return new ASTPrintAction();
41 case ASTView: return new ASTViewAction();
42 case DumpRawTokens: return new DumpRawTokensAction();
43 case DumpTokens: return new DumpTokensAction();
44 case EmitAssembly: return new EmitAssemblyAction();
45 case EmitBC: return new EmitBCAction();
46 case EmitHTML: return new HTMLPrintAction();
47 case EmitLLVM: return new EmitLLVMAction();
48 case EmitLLVMOnly: return new EmitLLVMOnlyAction();
49 case EmitCodeGenOnly: return new EmitCodeGenOnlyAction();
50 case EmitObj: return new EmitObjAction();
51 case FixIt: return new FixItAction();
52 case GenerateModule: return new GeneratePCHAction(true);
53 case GeneratePCH: return new GeneratePCHAction(false);
54 case GeneratePTH: return new GeneratePTHAction();
55 case InitOnly: return new InitOnlyAction();
56 case ParseSyntaxOnly: return new SyntaxOnlyAction();
59 for (FrontendPluginRegistry::iterator it =
60 FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end();
62 if (it->getName() == CI.getFrontendOpts().ActionName) {
63 llvm::OwningPtr<PluginASTAction> P(it->instantiate());
64 if (!P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs))
70 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name)
71 << CI.getFrontendOpts().ActionName;
75 case PrintDeclContext: return new DeclContextPrintAction();
76 case PrintPreamble: return new PrintPreambleAction();
77 case PrintPreprocessedInput: return new PrintPreprocessedAction();
78 case RewriteMacros: return new RewriteMacrosAction();
79 case RewriteObjC: return new RewriteObjCAction();
80 case RewriteTest: return new RewriteTestAction();
81 case RunAnalysis: return new ento::AnalysisAction();
82 case RunPreprocessorOnly: return new PreprocessOnlyAction();
86 static FrontendAction *CreateFrontendAction(CompilerInstance &CI) {
87 // Create the underlying action.
88 FrontendAction *Act = CreateFrontendBaseAction(CI);
92 // Potentially wrap the base FE action in an ARC Migrate Tool action.
93 switch (CI.getFrontendOpts().ARCMTAction) {
94 case FrontendOptions::ARCMT_None:
96 case FrontendOptions::ARCMT_Check:
97 Act = new arcmt::CheckAction(Act);
99 case FrontendOptions::ARCMT_Modify:
100 Act = new arcmt::ModifyAction(Act);
102 case FrontendOptions::ARCMT_Migrate:
103 Act = new arcmt::MigrateAction(Act,
104 CI.getFrontendOpts().ARCMTMigrateDir,
105 CI.getFrontendOpts().ARCMTMigrateReportOut,
106 CI.getFrontendOpts().ARCMTMigrateEmitARCErrors);
110 // If there are any AST files to merge, create a frontend action
111 // adaptor to perform the merge.
112 if (!CI.getFrontendOpts().ASTMergeFiles.empty())
113 Act = new ASTMergeAction(Act, &CI.getFrontendOpts().ASTMergeFiles[0],
114 CI.getFrontendOpts().ASTMergeFiles.size());
119 bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) {
121 if (Clang->getFrontendOpts().ShowHelp) {
122 llvm::OwningPtr<driver::OptTable> Opts(driver::createCC1OptTable());
123 Opts->PrintHelp(llvm::outs(), "clang -cc1",
124 "LLVM 'Clang' Compiler: http://clang.llvm.org");
130 // FIXME: Use a better -version message?
131 if (Clang->getFrontendOpts().ShowVersion) {
132 llvm::cl::PrintVersionMessage();
136 // Load any requested plugins.
138 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) {
139 const std::string &Path = Clang->getFrontendOpts().Plugins[i];
141 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error))
142 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin)
148 // FIXME: Remove this, one day.
149 // This should happen AFTER plugins have been loaded!
150 if (!Clang->getFrontendOpts().LLVMArgs.empty()) {
151 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size();
152 const char **Args = new const char*[NumArgs + 2];
153 Args[0] = "clang (LLVM option parsing)";
154 for (unsigned i = 0; i != NumArgs; ++i)
155 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str();
156 Args[NumArgs + 1] = 0;
157 llvm::cl::ParseCommandLineOptions(NumArgs + 1, const_cast<char **>(Args));
160 // Honor -analyzer-checker-help.
161 // This should happen AFTER plugins have been loaded!
162 if (Clang->getAnalyzerOpts().ShowCheckerHelp) {
163 ento::printCheckerHelp(llvm::outs(), Clang->getFrontendOpts().Plugins);
167 // If there were errors in processing arguments, don't do anything else.
168 bool Success = false;
169 if (!Clang->getDiagnostics().hasErrorOccurred()) {
170 // Create and execute the frontend action.
171 llvm::OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang));
173 Success = Clang->ExecuteAction(*Act);
174 if (Clang->getFrontendOpts().DisableFree)