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) {
35 case ASTDump: return new ASTDumpAction();
36 case ASTDumpXML: return new ASTDumpXMLAction();
37 case ASTPrint: return new ASTPrintAction();
38 case ASTView: return new ASTViewAction();
39 case DumpRawTokens: return new DumpRawTokensAction();
40 case DumpTokens: return new DumpTokensAction();
41 case EmitAssembly: return new EmitAssemblyAction();
42 case EmitBC: return new EmitBCAction();
43 case EmitHTML: return new HTMLPrintAction();
44 case EmitLLVM: return new EmitLLVMAction();
45 case EmitLLVMOnly: return new EmitLLVMOnlyAction();
46 case EmitCodeGenOnly: return new EmitCodeGenOnlyAction();
47 case EmitObj: return new EmitObjAction();
48 case FixIt: return new FixItAction();
49 case GenerateModule: return new GenerateModuleAction;
50 case GeneratePCH: return new GeneratePCHAction;
51 case GeneratePTH: return new GeneratePTHAction();
52 case InitOnly: return new InitOnlyAction();
53 case ParseSyntaxOnly: return new SyntaxOnlyAction();
56 for (FrontendPluginRegistry::iterator it =
57 FrontendPluginRegistry::begin(), ie = FrontendPluginRegistry::end();
59 if (it->getName() == CI.getFrontendOpts().ActionName) {
60 OwningPtr<PluginASTAction> P(it->instantiate());
61 if (!P->ParseArgs(CI, CI.getFrontendOpts().PluginArgs))
67 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name)
68 << CI.getFrontendOpts().ActionName;
72 case PrintDeclContext: return new DeclContextPrintAction();
73 case PrintPreamble: return new PrintPreambleAction();
74 case PrintPreprocessedInput: return new PrintPreprocessedAction();
75 case RewriteMacros: return new RewriteMacrosAction();
76 case RewriteObjC: return new RewriteObjCAction();
77 case RewriteTest: return new RewriteTestAction();
78 case RunAnalysis: return new ento::AnalysisAction();
79 case MigrateSource: return new arcmt::MigrateSourceAction();
80 case RunPreprocessorOnly: return new PreprocessOnlyAction();
82 llvm_unreachable("Invalid program action!");
85 static FrontendAction *CreateFrontendAction(CompilerInstance &CI) {
86 // Create the underlying action.
87 FrontendAction *Act = CreateFrontendBaseAction(CI);
91 const FrontendOptions &FEOpts = CI.getFrontendOpts();
93 if (FEOpts.FixAndRecompile) {
94 Act = new FixItRecompile(Act);
97 // Potentially wrap the base FE action in an ARC Migrate Tool action.
98 switch (FEOpts.ARCMTAction) {
99 case FrontendOptions::ARCMT_None:
101 case FrontendOptions::ARCMT_Check:
102 Act = new arcmt::CheckAction(Act);
104 case FrontendOptions::ARCMT_Modify:
105 Act = new arcmt::ModifyAction(Act);
107 case FrontendOptions::ARCMT_Migrate:
108 Act = new arcmt::MigrateAction(Act,
110 FEOpts.ARCMTMigrateReportOut,
111 FEOpts.ARCMTMigrateEmitARCErrors);
115 if (FEOpts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
116 Act = new arcmt::ObjCMigrateAction(Act, FEOpts.MTMigrateDir,
117 FEOpts.ObjCMTAction & ~FrontendOptions::ObjCMT_Literals,
118 FEOpts.ObjCMTAction & ~FrontendOptions::ObjCMT_Subscripting);
121 // If there are any AST files to merge, create a frontend action
122 // adaptor to perform the merge.
123 if (!FEOpts.ASTMergeFiles.empty())
124 Act = new ASTMergeAction(Act, FEOpts.ASTMergeFiles);
129 bool clang::ExecuteCompilerInvocation(CompilerInstance *Clang) {
131 if (Clang->getFrontendOpts().ShowHelp) {
132 OwningPtr<driver::OptTable> Opts(driver::createCC1OptTable());
133 Opts->PrintHelp(llvm::outs(), "clang -cc1",
134 "LLVM 'Clang' Compiler: http://clang.llvm.org");
140 // FIXME: Use a better -version message?
141 if (Clang->getFrontendOpts().ShowVersion) {
142 llvm::cl::PrintVersionMessage();
146 // Load any requested plugins.
148 e = Clang->getFrontendOpts().Plugins.size(); i != e; ++i) {
149 const std::string &Path = Clang->getFrontendOpts().Plugins[i];
151 if (llvm::sys::DynamicLibrary::LoadLibraryPermanently(Path.c_str(), &Error))
152 Clang->getDiagnostics().Report(diag::err_fe_unable_to_load_plugin)
158 // FIXME: Remove this, one day.
159 // This should happen AFTER plugins have been loaded!
160 if (!Clang->getFrontendOpts().LLVMArgs.empty()) {
161 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size();
162 const char **Args = new const char*[NumArgs + 2];
163 Args[0] = "clang (LLVM option parsing)";
164 for (unsigned i = 0; i != NumArgs; ++i)
165 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str();
166 Args[NumArgs + 1] = 0;
167 llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args);
170 // Honor -analyzer-checker-help.
171 // This should happen AFTER plugins have been loaded!
172 if (Clang->getAnalyzerOpts().ShowCheckerHelp) {
173 ento::printCheckerHelp(llvm::outs(), Clang->getFrontendOpts().Plugins);
177 // If there were errors in processing arguments, don't do anything else.
178 bool Success = false;
179 if (!Clang->getDiagnostics().hasErrorOccurred()) {
180 // Create and execute the frontend action.
181 OwningPtr<FrontendAction> Act(CreateFrontendAction(*Clang));
183 Success = Clang->ExecuteAction(*Act);
184 if (Clang->getFrontendOpts().DisableFree)