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1 //===--- ExecuteCompilerInvocation.cpp ------------------------------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8 //
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9 // This file holds ExecuteCompilerInvocation(). It is split into its own file to
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10 // minimize the impact of pulling in essentially everything else in Clang.
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11 //
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12 //===----------------------------------------------------------------------===//
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13
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14 #include "clang/ARCMigrate/ARCMTActions.h"
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15 #include "clang/CodeGen/CodeGenAction.h"
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16 #include "clang/Config/config.h"
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17 #include "clang/Driver/Options.h"
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236
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18 #include "clang/ExtractAPI/FrontendActions.h"
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150
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19 #include "clang/Frontend/CompilerInstance.h"
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20 #include "clang/Frontend/CompilerInvocation.h"
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21 #include "clang/Frontend/FrontendActions.h"
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22 #include "clang/Frontend/FrontendDiagnostic.h"
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23 #include "clang/Frontend/FrontendPluginRegistry.h"
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24 #include "clang/Frontend/Utils.h"
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25 #include "clang/FrontendTool/Utils.h"
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26 #include "clang/Rewrite/Frontend/FrontendActions.h"
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173
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27 #include "clang/StaticAnalyzer/Frontend/AnalyzerHelpFlags.h"
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150
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28 #include "clang/StaticAnalyzer/Frontend/FrontendActions.h"
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29 #include "llvm/Option/OptTable.h"
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30 #include "llvm/Option/Option.h"
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31 #include "llvm/Support/BuryPointer.h"
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32 #include "llvm/Support/DynamicLibrary.h"
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33 #include "llvm/Support/ErrorHandling.h"
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34 using namespace clang;
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35 using namespace llvm::opt;
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36
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37 namespace clang {
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38
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39 static std::unique_ptr<FrontendAction>
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40 CreateFrontendBaseAction(CompilerInstance &CI) {
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41 using namespace clang::frontend;
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42 StringRef Action("unknown");
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43 (void)Action;
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44
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45 switch (CI.getFrontendOpts().ProgramAction) {
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46 case ASTDeclList: return std::make_unique<ASTDeclListAction>();
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47 case ASTDump: return std::make_unique<ASTDumpAction>();
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48 case ASTPrint: return std::make_unique<ASTPrintAction>();
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49 case ASTView: return std::make_unique<ASTViewAction>();
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50 case DumpCompilerOptions:
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51 return std::make_unique<DumpCompilerOptionsAction>();
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52 case DumpRawTokens: return std::make_unique<DumpRawTokensAction>();
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53 case DumpTokens: return std::make_unique<DumpTokensAction>();
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54 case EmitAssembly: return std::make_unique<EmitAssemblyAction>();
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55 case EmitBC: return std::make_unique<EmitBCAction>();
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56 case EmitHTML: return std::make_unique<HTMLPrintAction>();
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57 case EmitLLVM: return std::make_unique<EmitLLVMAction>();
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58 case EmitLLVMOnly: return std::make_unique<EmitLLVMOnlyAction>();
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59 case EmitCodeGenOnly: return std::make_unique<EmitCodeGenOnlyAction>();
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60 case EmitObj: return std::make_unique<EmitObjAction>();
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236
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61 case ExtractAPI:
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62 return std::make_unique<ExtractAPIAction>();
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150
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63 case FixIt: return std::make_unique<FixItAction>();
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64 case GenerateModule:
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65 return std::make_unique<GenerateModuleFromModuleMapAction>();
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66 case GenerateModuleInterface:
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67 return std::make_unique<GenerateModuleInterfaceAction>();
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236
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68 case GenerateHeaderUnit:
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69 return std::make_unique<GenerateHeaderUnitAction>();
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150
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70 case GeneratePCH: return std::make_unique<GeneratePCHAction>();
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173
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71 case GenerateInterfaceStubs:
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72 return std::make_unique<GenerateInterfaceStubsAction>();
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150
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73 case InitOnly: return std::make_unique<InitOnlyAction>();
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74 case ParseSyntaxOnly: return std::make_unique<SyntaxOnlyAction>();
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75 case ModuleFileInfo: return std::make_unique<DumpModuleInfoAction>();
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76 case VerifyPCH: return std::make_unique<VerifyPCHAction>();
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77 case TemplightDump: return std::make_unique<TemplightDumpAction>();
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78
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79 case PluginAction: {
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221
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80 for (const FrontendPluginRegistry::entry &Plugin :
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81 FrontendPluginRegistry::entries()) {
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82 if (Plugin.getName() == CI.getFrontendOpts().ActionName) {
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83 std::unique_ptr<PluginASTAction> P(Plugin.instantiate());
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150
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84 if ((P->getActionType() != PluginASTAction::ReplaceAction &&
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236
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85 P->getActionType() != PluginASTAction::CmdlineAfterMainAction) ||
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150
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86 !P->ParseArgs(
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87 CI,
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221
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88 CI.getFrontendOpts().PluginArgs[std::string(Plugin.getName())]))
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150
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89 return nullptr;
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90 return std::move(P);
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91 }
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92 }
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93
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94 CI.getDiagnostics().Report(diag::err_fe_invalid_plugin_name)
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95 << CI.getFrontendOpts().ActionName;
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96 return nullptr;
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97 }
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98
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99 case PrintPreamble: return std::make_unique<PrintPreambleAction>();
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100 case PrintPreprocessedInput: {
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101 if (CI.getPreprocessorOutputOpts().RewriteIncludes ||
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102 CI.getPreprocessorOutputOpts().RewriteImports)
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103 return std::make_unique<RewriteIncludesAction>();
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104 return std::make_unique<PrintPreprocessedAction>();
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105 }
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106
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107 case RewriteMacros: return std::make_unique<RewriteMacrosAction>();
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108 case RewriteTest: return std::make_unique<RewriteTestAction>();
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109 #if CLANG_ENABLE_OBJC_REWRITER
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110 case RewriteObjC: return std::make_unique<RewriteObjCAction>();
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111 #else
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112 case RewriteObjC: Action = "RewriteObjC"; break;
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113 #endif
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114 #if CLANG_ENABLE_ARCMT
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115 case MigrateSource:
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116 return std::make_unique<arcmt::MigrateSourceAction>();
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117 #else
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118 case MigrateSource: Action = "MigrateSource"; break;
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119 #endif
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120 #if CLANG_ENABLE_STATIC_ANALYZER
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121 case RunAnalysis: return std::make_unique<ento::AnalysisAction>();
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122 #else
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123 case RunAnalysis: Action = "RunAnalysis"; break;
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124 #endif
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125 case RunPreprocessorOnly: return std::make_unique<PreprocessOnlyAction>();
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126 case PrintDependencyDirectivesSourceMinimizerOutput:
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127 return std::make_unique<PrintDependencyDirectivesSourceMinimizerAction>();
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128 }
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129
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130 #if !CLANG_ENABLE_ARCMT || !CLANG_ENABLE_STATIC_ANALYZER \
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131 || !CLANG_ENABLE_OBJC_REWRITER
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132 CI.getDiagnostics().Report(diag::err_fe_action_not_available) << Action;
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133 return 0;
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134 #else
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135 llvm_unreachable("Invalid program action!");
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136 #endif
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137 }
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138
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139 std::unique_ptr<FrontendAction>
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140 CreateFrontendAction(CompilerInstance &CI) {
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141 // Create the underlying action.
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142 std::unique_ptr<FrontendAction> Act = CreateFrontendBaseAction(CI);
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143 if (!Act)
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144 return nullptr;
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145
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146 const FrontendOptions &FEOpts = CI.getFrontendOpts();
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147
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148 if (FEOpts.FixAndRecompile) {
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149 Act = std::make_unique<FixItRecompile>(std::move(Act));
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150 }
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151
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152 #if CLANG_ENABLE_ARCMT
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153 if (CI.getFrontendOpts().ProgramAction != frontend::MigrateSource &&
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154 CI.getFrontendOpts().ProgramAction != frontend::GeneratePCH) {
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155 // Potentially wrap the base FE action in an ARC Migrate Tool action.
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156 switch (FEOpts.ARCMTAction) {
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157 case FrontendOptions::ARCMT_None:
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158 break;
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159 case FrontendOptions::ARCMT_Check:
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160 Act = std::make_unique<arcmt::CheckAction>(std::move(Act));
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161 break;
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162 case FrontendOptions::ARCMT_Modify:
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163 Act = std::make_unique<arcmt::ModifyAction>(std::move(Act));
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164 break;
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165 case FrontendOptions::ARCMT_Migrate:
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166 Act = std::make_unique<arcmt::MigrateAction>(std::move(Act),
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167 FEOpts.MTMigrateDir,
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168 FEOpts.ARCMTMigrateReportOut,
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169 FEOpts.ARCMTMigrateEmitARCErrors);
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170 break;
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171 }
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172
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173 if (FEOpts.ObjCMTAction != FrontendOptions::ObjCMT_None) {
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174 Act = std::make_unique<arcmt::ObjCMigrateAction>(std::move(Act),
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175 FEOpts.MTMigrateDir,
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176 FEOpts.ObjCMTAction);
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177 }
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178 }
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179 #endif
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180
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252
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181 // Wrap the base FE action in an extract api action to generate
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182 // symbol graph as a biproduct of comilation ( enabled with
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183 // --emit-symbol-graph option )
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184 if (!FEOpts.SymbolGraphOutputDir.empty()) {
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185 CI.getCodeGenOpts().ClearASTBeforeBackend = false;
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186 Act = std::make_unique<WrappingExtractAPIAction>(std::move(Act));
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187 }
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188
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150
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189 // If there are any AST files to merge, create a frontend action
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190 // adaptor to perform the merge.
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191 if (!FEOpts.ASTMergeFiles.empty())
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192 Act = std::make_unique<ASTMergeAction>(std::move(Act),
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193 FEOpts.ASTMergeFiles);
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194
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195 return Act;
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196 }
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197
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198 bool ExecuteCompilerInvocation(CompilerInstance *Clang) {
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199 // Honor -help.
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200 if (Clang->getFrontendOpts().ShowHelp) {
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223
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201 driver::getDriverOptTable().printHelp(
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202 llvm::outs(), "clang -cc1 [options] file...",
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203 "LLVM 'Clang' Compiler: http://clang.llvm.org",
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204 /*Include=*/driver::options::CC1Option,
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205 /*Exclude=*/0, /*ShowAllAliases=*/false);
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206 return true;
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207 }
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208
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209 // Honor -version.
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210 //
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211 // FIXME: Use a better -version message?
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212 if (Clang->getFrontendOpts().ShowVersion) {
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213 llvm::cl::PrintVersionMessage();
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214 return true;
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215 }
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216
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236
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217 Clang->LoadRequestedPlugins();
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150
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218
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219 // Honor -mllvm.
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220 //
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221 // FIXME: Remove this, one day.
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222 // This should happen AFTER plugins have been loaded!
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223 if (!Clang->getFrontendOpts().LLVMArgs.empty()) {
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224 unsigned NumArgs = Clang->getFrontendOpts().LLVMArgs.size();
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225 auto Args = std::make_unique<const char*[]>(NumArgs + 2);
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226 Args[0] = "clang (LLVM option parsing)";
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227 for (unsigned i = 0; i != NumArgs; ++i)
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228 Args[i + 1] = Clang->getFrontendOpts().LLVMArgs[i].c_str();
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229 Args[NumArgs + 1] = nullptr;
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230 llvm::cl::ParseCommandLineOptions(NumArgs + 1, Args.get());
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231 }
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232
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233 #if CLANG_ENABLE_STATIC_ANALYZER
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234 // These should happen AFTER plugins have been loaded!
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235
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236 AnalyzerOptions &AnOpts = *Clang->getAnalyzerOpts();
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173
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237
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238 // Honor -analyzer-checker-help and -analyzer-checker-help-hidden.
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239 if (AnOpts.ShowCheckerHelp || AnOpts.ShowCheckerHelpAlpha ||
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240 AnOpts.ShowCheckerHelpDeveloper) {
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173
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241 ento::printCheckerHelp(llvm::outs(), *Clang);
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242 return true;
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243 }
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244
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245 // Honor -analyzer-checker-option-help.
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246 if (AnOpts.ShowCheckerOptionList || AnOpts.ShowCheckerOptionAlphaList ||
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247 AnOpts.ShowCheckerOptionDeveloperList) {
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173
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248 ento::printCheckerConfigList(llvm::outs(), *Clang);
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150
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249 return true;
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250 }
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251
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252 // Honor -analyzer-list-enabled-checkers.
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253 if (AnOpts.ShowEnabledCheckerList) {
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173
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254 ento::printEnabledCheckerList(llvm::outs(), *Clang);
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150
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255 return true;
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256 }
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257
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258 // Honor -analyzer-config-help.
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259 if (AnOpts.ShowConfigOptionsList) {
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260 ento::printAnalyzerConfigList(llvm::outs());
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261 return true;
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262 }
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263 #endif
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264
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265 // If there were errors in processing arguments, don't do anything else.
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266 if (Clang->getDiagnostics().hasErrorOccurred())
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267 return false;
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268 // Create and execute the frontend action.
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269 std::unique_ptr<FrontendAction> Act(CreateFrontendAction(*Clang));
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270 if (!Act)
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271 return false;
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272 bool Success = Clang->ExecuteAction(*Act);
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273 if (Clang->getFrontendOpts().DisableFree)
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274 llvm::BuryPointer(std::move(Act));
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275 return Success;
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276 }
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277
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278 } // namespace clang
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