| //===--- clang.cpp - C-Language Front-end ---------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This utility may be invoked in the following manner: |
| // clang --help - Output help info. |
| // clang [options] - Read from stdin. |
| // clang [options] file - Read from "file". |
| // clang [options] file1 file2 - Read these files. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // TODO: Options to support: |
| // |
| // -Wfatal-errors |
| // -ftabstop=width |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang.h" |
| #include "ASTConsumers.h" |
| #include "clang/Frontend/CompileOptions.h" |
| #include "clang/Frontend/PathDiagnosticClients.h" |
| #include "clang/Frontend/InitHeaderSearch.h" |
| #include "clang/Frontend/TextDiagnosticBuffer.h" |
| #include "clang/Frontend/TextDiagnosticPrinter.h" |
| #include "clang/Analysis/PathDiagnostic.h" |
| #include "clang/AST/Decl.h" |
| #include "clang/AST/TranslationUnit.h" |
| #include "clang/CodeGen/ModuleBuilder.h" |
| #include "clang/Sema/ParseAST.h" |
| #include "clang/Sema/SemaDiagnostic.h" |
| #include "clang/AST/ASTConsumer.h" |
| #include "clang/Parse/Parser.h" |
| #include "clang/Lex/HeaderSearch.h" |
| #include "clang/Lex/LexDiagnostic.h" |
| #include "clang/Basic/FileManager.h" |
| #include "clang/Basic/SourceManager.h" |
| #include "clang/Basic/TargetInfo.h" |
| #include "llvm/ADT/OwningPtr.h" |
| #include "llvm/ADT/SmallPtrSet.h" |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/Config/config.h" |
| #include "llvm/Support/CommandLine.h" |
| #include "llvm/Support/ManagedStatic.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| #include "llvm/Support/PluginLoader.h" |
| #include "llvm/Support/PrettyStackTrace.h" |
| #include "llvm/Support/Timer.h" |
| #include "llvm/System/Host.h" |
| #include "llvm/System/Path.h" |
| #include "llvm/System/Signals.h" |
| using namespace clang; |
| |
| //===----------------------------------------------------------------------===// |
| // Global options. |
| //===----------------------------------------------------------------------===// |
| |
| /// ClangFrontendTimer - The front-end activities should charge time to it with |
| /// TimeRegion. The -ftime-report option controls whether this will do |
| /// anything. |
| llvm::Timer *ClangFrontendTimer = 0; |
| |
| static bool HadErrors = false; |
| |
| static llvm::cl::opt<bool> |
| Verbose("v", llvm::cl::desc("Enable verbose output")); |
| static llvm::cl::opt<bool> |
| Stats("print-stats", |
| llvm::cl::desc("Print performance metrics and statistics")); |
| static llvm::cl::opt<bool> |
| DisableFree("disable-free", |
| llvm::cl::desc("Disable freeing of memory on exit"), |
| llvm::cl::init(false)); |
| |
| enum ProgActions { |
| RewriteObjC, // ObjC->C Rewriter. |
| RewriteBlocks, // ObjC->C Rewriter for Blocks. |
| RewriteMacros, // Expand macros but not #includes. |
| RewriteTest, // Rewriter playground |
| HTMLTest, // HTML displayer testing stuff. |
| EmitAssembly, // Emit a .s file. |
| EmitLLVM, // Emit a .ll file. |
| EmitBC, // Emit a .bc file. |
| EmitLLVMOnly, // Generate LLVM IR, but do not |
| SerializeAST, // Emit a .ast file. |
| EmitHTML, // Translate input source into HTML. |
| ASTPrint, // Parse ASTs and print them. |
| ASTDump, // Parse ASTs and dump them. |
| ASTView, // Parse ASTs and view them in Graphviz. |
| PrintDeclContext, // Print DeclContext and their Decls. |
| TestSerialization, // Run experimental serialization code. |
| ParsePrintCallbacks, // Parse and print each callback. |
| ParseSyntaxOnly, // Parse and perform semantic analysis. |
| ParseNoop, // Parse with noop callbacks. |
| RunPreprocessorOnly, // Just lex, no output. |
| PrintPreprocessedInput, // -E mode. |
| DumpTokens, // Dump out preprocessed tokens. |
| DumpRawTokens, // Dump out raw tokens. |
| RunAnalysis, // Run one or more source code analyses. |
| GeneratePCH, // Generate precompiled header. |
| InheritanceView // View C++ inheritance for a specified class. |
| }; |
| |
| static llvm::cl::opt<ProgActions> |
| ProgAction(llvm::cl::desc("Choose output type:"), llvm::cl::ZeroOrMore, |
| llvm::cl::init(ParseSyntaxOnly), |
| llvm::cl::values( |
| clEnumValN(RunPreprocessorOnly, "Eonly", |
| "Just run preprocessor, no output (for timings)"), |
| clEnumValN(PrintPreprocessedInput, "E", |
| "Run preprocessor, emit preprocessed file"), |
| clEnumValN(DumpRawTokens, "dump-raw-tokens", |
| "Lex file in raw mode and dump raw tokens"), |
| clEnumValN(RunAnalysis, "analyze", |
| "Run static analysis engine"), |
| clEnumValN(DumpTokens, "dump-tokens", |
| "Run preprocessor, dump internal rep of tokens"), |
| clEnumValN(ParseNoop, "parse-noop", |
| "Run parser with noop callbacks (for timings)"), |
| clEnumValN(ParseSyntaxOnly, "fsyntax-only", |
| "Run parser and perform semantic analysis"), |
| clEnumValN(ParsePrintCallbacks, "parse-print-callbacks", |
| "Run parser and print each callback invoked"), |
| clEnumValN(EmitHTML, "emit-html", |
| "Output input source as HTML"), |
| clEnumValN(ASTPrint, "ast-print", |
| "Build ASTs and then pretty-print them"), |
| clEnumValN(ASTDump, "ast-dump", |
| "Build ASTs and then debug dump them"), |
| clEnumValN(ASTView, "ast-view", |
| "Build ASTs and view them with GraphViz"), |
| clEnumValN(PrintDeclContext, "print-decl-contexts", |
| "Print DeclContexts and their Decls."), |
| clEnumValN(TestSerialization, "test-pickling", |
| "Run prototype serialization code"), |
| clEnumValN(EmitAssembly, "S", |
| "Emit native assembly code"), |
| clEnumValN(EmitLLVM, "emit-llvm", |
| "Build ASTs then convert to LLVM, emit .ll file"), |
| clEnumValN(EmitBC, "emit-llvm-bc", |
| "Build ASTs then convert to LLVM, emit .bc file"), |
| clEnumValN(EmitLLVMOnly, "emit-llvm-only", |
| "Build ASTs and convert to LLVM, discarding output"), |
| clEnumValN(SerializeAST, "serialize", |
| "Build ASTs and emit .ast file"), |
| clEnumValN(RewriteTest, "rewrite-test", |
| "Rewriter playground"), |
| clEnumValN(RewriteObjC, "rewrite-objc", |
| "Rewrite ObjC into C (code rewriter example)"), |
| clEnumValN(RewriteMacros, "rewrite-macros", |
| "Expand macros without full preprocessing"), |
| clEnumValN(RewriteBlocks, "rewrite-blocks", |
| "Rewrite Blocks to C"), |
| clEnumValEnd)); |
| |
| |
| static llvm::cl::opt<std::string> |
| OutputFile("o", |
| llvm::cl::value_desc("path"), |
| llvm::cl::desc("Specify output file (for --serialize, this is a directory)")); |
| |
| |
| //===----------------------------------------------------------------------===// |
| // PTH. |
| //===----------------------------------------------------------------------===// |
| |
| static llvm::cl::opt<std::string> |
| TokenCache("token-cache", llvm::cl::value_desc("path"), |
| llvm::cl::desc("Use specified token cache file")); |
| |
| //===----------------------------------------------------------------------===// |
| // Diagnostic Options |
| //===----------------------------------------------------------------------===// |
| |
| static llvm::cl::opt<bool> |
| VerifyDiagnostics("verify", |
| llvm::cl::desc("Verify emitted diagnostics and warnings")); |
| |
| static llvm::cl::opt<std::string> |
| HTMLDiag("html-diags", |
| llvm::cl::desc("Generate HTML to report diagnostics"), |
| llvm::cl::value_desc("HTML directory")); |
| |
| static llvm::cl::opt<bool> |
| NoShowColumn("fno-show-column", |
| llvm::cl::desc("Do not include column number on diagnostics")); |
| |
| static llvm::cl::opt<bool> |
| NoShowLocation("fno-show-source-location", |
| llvm::cl::desc("Do not include source location information with" |
| " diagnostics")); |
| |
| static llvm::cl::opt<bool> |
| NoCaretDiagnostics("fno-caret-diagnostics", |
| llvm::cl::desc("Do not include source line and caret with" |
| " diagnostics")); |
| |
| |
| //===----------------------------------------------------------------------===// |
| // C++ Visualization. |
| //===----------------------------------------------------------------------===// |
| |
| static llvm::cl::opt<std::string> |
| InheritanceViewCls("cxx-inheritance-view", |
| llvm::cl::value_desc("class name"), |
| llvm::cl::desc("View C++ inheritance for a specified class")); |
| |
| //===----------------------------------------------------------------------===// |
| // Builtin Options |
| //===----------------------------------------------------------------------===// |
| |
| static llvm::cl::opt<bool> |
| TimeReport("ftime-report", |
| llvm::cl::desc("Print the amount of time each " |
| "phase of compilation takes")); |
| |
| static llvm::cl::opt<bool> |
| Freestanding("ffreestanding", |
| llvm::cl::desc("Assert that the compilation takes place in a " |
| "freestanding environment")); |
| |
| static llvm::cl::opt<bool> |
| MathErrno("fmath-errno", |
| llvm::cl::desc("Require math functions to respect errno"), |
| llvm::cl::init(true), llvm::cl::AllowInverse); |
| |
| //===----------------------------------------------------------------------===// |
| // Language Options |
| //===----------------------------------------------------------------------===// |
| |
| enum LangKind { |
| langkind_unspecified, |
| langkind_c, |
| langkind_c_cpp, |
| langkind_asm_cpp, |
| langkind_c_pch, |
| langkind_cxx, |
| langkind_cxx_cpp, |
| langkind_cxx_pch, |
| langkind_objc, |
| langkind_objc_cpp, |
| langkind_objc_pch, |
| langkind_objcxx, |
| langkind_objcxx_cpp, |
| langkind_objcxx_pch |
| }; |
| |
| static llvm::cl::opt<LangKind> |
| BaseLang("x", llvm::cl::desc("Base language to compile"), |
| llvm::cl::init(langkind_unspecified), |
| llvm::cl::values(clEnumValN(langkind_c, "c", "C"), |
| clEnumValN(langkind_cxx, "c++", "C++"), |
| clEnumValN(langkind_objc, "objective-c", "Objective C"), |
| clEnumValN(langkind_objcxx,"objective-c++","Objective C++"), |
| clEnumValN(langkind_c_cpp, "cpp-output", |
| "Preprocessed C"), |
| clEnumValN(langkind_asm_cpp, "assembler-with-cpp", |
| "Preprocessed asm"), |
| clEnumValN(langkind_cxx_cpp, "c++-cpp-output", |
| "Preprocessed C++"), |
| clEnumValN(langkind_objc_cpp, "objective-c-cpp-output", |
| "Preprocessed Objective C"), |
| clEnumValN(langkind_objcxx_cpp, "objective-c++-cpp-output", |
| "Preprocessed Objective C++"), |
| clEnumValN(langkind_c_pch, "c-header", |
| "Precompiled C header"), |
| clEnumValN(langkind_objc_pch, "objective-c-header", |
| "Precompiled Objective-C header"), |
| clEnumValN(langkind_cxx_pch, "c++-header", |
| "Precompiled C++ header"), |
| clEnumValN(langkind_objcxx_pch, "objective-c++-header", |
| "Precompiled Objective-C++ header"), |
| clEnumValEnd)); |
| |
| static llvm::cl::opt<bool> |
| LangObjC("ObjC", llvm::cl::desc("Set base language to Objective-C"), |
| llvm::cl::Hidden); |
| static llvm::cl::opt<bool> |
| LangObjCXX("ObjC++", llvm::cl::desc("Set base language to Objective-C++"), |
| llvm::cl::Hidden); |
| |
| /// InitializeBaseLanguage - Handle the -x foo options. |
| static void InitializeBaseLanguage() { |
| if (LangObjC) |
| BaseLang = langkind_objc; |
| else if (LangObjCXX) |
| BaseLang = langkind_objcxx; |
| } |
| |
| static LangKind GetLanguage(const std::string &Filename) { |
| if (BaseLang != langkind_unspecified) |
| return BaseLang; |
| |
| std::string::size_type DotPos = Filename.rfind('.'); |
| |
| if (DotPos == std::string::npos) { |
| BaseLang = langkind_c; // Default to C if no extension. |
| return langkind_c; |
| } |
| |
| std::string Ext = std::string(Filename.begin()+DotPos+1, Filename.end()); |
| // C header: .h |
| // C++ header: .hh or .H; |
| // assembler no preprocessing: .s |
| // assembler: .S |
| if (Ext == "c") |
| return langkind_c; |
| else if (Ext == "S") |
| return langkind_asm_cpp; |
| else if (Ext == "i") |
| return langkind_c_cpp; |
| else if (Ext == "ii") |
| return langkind_cxx_cpp; |
| else if (Ext == "m") |
| return langkind_objc; |
| else if (Ext == "mi") |
| return langkind_objc_cpp; |
| else if (Ext == "mm" || Ext == "M") |
| return langkind_objcxx; |
| else if (Ext == "mii") |
| return langkind_objcxx_cpp; |
| else if (Ext == "C" || Ext == "cc" || Ext == "cpp" || Ext == "CPP" || |
| Ext == "c++" || Ext == "cp" || Ext == "cxx") |
| return langkind_cxx; |
| else |
| return langkind_c; |
| } |
| |
| |
| static void InitializeCOptions(LangOptions &Options) { |
| // Do nothing. |
| } |
| |
| static void InitializeObjCOptions(LangOptions &Options) { |
| Options.ObjC1 = Options.ObjC2 = 1; |
| } |
| |
| |
| static bool InitializeLangOptions(LangOptions &Options, LangKind LK){ |
| // FIXME: implement -fpreprocessed mode. |
| bool NoPreprocess = false; |
| bool PCH = false; |
| |
| // Test for 'PCH'. |
| switch (LK) { |
| default: |
| break; |
| case langkind_c_pch: |
| LK = langkind_c; |
| PCH = true; |
| break; |
| case langkind_objc_pch: |
| LK = langkind_objc; |
| PCH = true; |
| break; |
| case langkind_cxx_pch: |
| LK = langkind_cxx; |
| PCH = true; |
| break; |
| case langkind_objcxx_pch: |
| LK = langkind_objcxx; |
| PCH = true; |
| break; |
| } |
| |
| switch (LK) { |
| default: assert(0 && "Unknown language kind!"); |
| case langkind_asm_cpp: |
| Options.AsmPreprocessor = 1; |
| // FALLTHROUGH |
| case langkind_c_cpp: |
| NoPreprocess = true; |
| // FALLTHROUGH |
| case langkind_c: |
| InitializeCOptions(Options); |
| break; |
| case langkind_cxx_cpp: |
| NoPreprocess = true; |
| // FALLTHROUGH |
| case langkind_cxx: |
| Options.CPlusPlus = 1; |
| break; |
| case langkind_objc_cpp: |
| NoPreprocess = true; |
| // FALLTHROUGH |
| case langkind_objc: |
| InitializeObjCOptions(Options); |
| break; |
| case langkind_objcxx_cpp: |
| NoPreprocess = true; |
| // FALLTHROUGH |
| case langkind_objcxx: |
| Options.ObjC1 = Options.ObjC2 = 1; |
| Options.CPlusPlus = 1; |
| break; |
| } |
| |
| return PCH; |
| } |
| |
| /// LangStds - Language standards we support. |
| enum LangStds { |
| lang_unspecified, |
| lang_c89, lang_c94, lang_c99, |
| lang_gnu_START, |
| lang_gnu89 = lang_gnu_START, lang_gnu99, |
| lang_cxx98, lang_gnucxx98, |
| lang_cxx0x, lang_gnucxx0x |
| }; |
| |
| static llvm::cl::opt<LangStds> |
| LangStd("std", llvm::cl::desc("Language standard to compile for"), |
| llvm::cl::init(lang_unspecified), |
| llvm::cl::values(clEnumValN(lang_c89, "c89", "ISO C 1990"), |
| clEnumValN(lang_c89, "c90", "ISO C 1990"), |
| clEnumValN(lang_c89, "iso9899:1990", "ISO C 1990"), |
| clEnumValN(lang_c94, "iso9899:199409", |
| "ISO C 1990 with amendment 1"), |
| clEnumValN(lang_c99, "c99", "ISO C 1999"), |
| // clEnumValN(lang_c99, "c9x", "ISO C 1999"), |
| clEnumValN(lang_c99, "iso9899:1999", "ISO C 1999"), |
| // clEnumValN(lang_c99, "iso9899:199x", "ISO C 1999"), |
| clEnumValN(lang_gnu89, "gnu89", |
| "ISO C 1990 with GNU extensions"), |
| clEnumValN(lang_gnu99, "gnu99", |
| "ISO C 1999 with GNU extensions (default for C)"), |
| clEnumValN(lang_gnu99, "gnu9x", |
| "ISO C 1999 with GNU extensions"), |
| clEnumValN(lang_cxx98, "c++98", |
| "ISO C++ 1998 with amendments"), |
| clEnumValN(lang_gnucxx98, "gnu++98", |
| "ISO C++ 1998 with amendments and GNU " |
| "extensions (default for C++)"), |
| clEnumValN(lang_cxx0x, "c++0x", |
| "Upcoming ISO C++ 200x with amendments"), |
| clEnumValN(lang_gnucxx0x, "gnu++0x", |
| "Upcoming ISO C++ 200x with amendments and GNU " |
| "extensions (default for C++)"), |
| clEnumValEnd)); |
| |
| static llvm::cl::opt<bool> |
| NoOperatorNames("fno-operator-names", |
| llvm::cl::desc("Do not treat C++ operator name keywords as " |
| "synonyms for operators")); |
| |
| static llvm::cl::opt<bool> |
| PascalStrings("fpascal-strings", |
| llvm::cl::desc("Recognize and construct Pascal-style " |
| "string literals")); |
| |
| static llvm::cl::opt<bool> |
| MSExtensions("fms-extensions", |
| llvm::cl::desc("Accept some non-standard constructs used in " |
| "Microsoft header files ")); |
| |
| static llvm::cl::opt<bool> |
| WritableStrings("fwritable-strings", |
| llvm::cl::desc("Store string literals as writable data")); |
| |
| static llvm::cl::opt<bool> |
| NoLaxVectorConversions("fno-lax-vector-conversions", |
| llvm::cl::desc("Disallow implicit conversions between " |
| "vectors with a different number of " |
| "elements or different element types")); |
| |
| static llvm::cl::opt<bool> |
| EnableBlocks("fblocks", llvm::cl::desc("enable the 'blocks' language feature"), |
| llvm::cl::ValueDisallowed, llvm::cl::AllowInverse, |
| llvm::cl::ZeroOrMore); |
| |
| static llvm::cl::opt<bool> |
| ObjCNonFragileABI("fobjc-nonfragile-abi", |
| llvm::cl::desc("enable objective-c's nonfragile abi")); |
| |
| static llvm::cl::opt<bool> |
| EmitAllDecls("femit-all-decls", |
| llvm::cl::desc("Emit all declarations, even if unused")); |
| |
| // FIXME: This (and all GCC -f options) really come in -f... and |
| // -fno-... forms, and additionally support automagic behavior when |
| // they are not defined. For example, -fexceptions defaults to on or |
| // off depending on the language. We should support this behavior in |
| // some form (perhaps just add a facility for distinguishing when an |
| // has its default value from when it has been set to its default |
| // value). |
| static llvm::cl::opt<bool> |
| Exceptions("fexceptions", |
| llvm::cl::desc("Enable support for exception handling.")); |
| |
| static llvm::cl::opt<bool> |
| GNURuntime("fgnu-runtime", |
| llvm::cl::desc("Generate output compatible with the standard GNU " |
| "Objective-C runtime.")); |
| |
| static llvm::cl::opt<bool> |
| NeXTRuntime("fnext-runtime", |
| llvm::cl::desc("Generate output compatible with the NeXT " |
| "runtime.")); |
| |
| |
| |
| static llvm::cl::opt<bool> |
| Trigraphs("trigraphs", llvm::cl::desc("Process trigraph sequences.")); |
| |
| static llvm::cl::opt<bool> |
| Ansi("ansi", llvm::cl::desc("Equivalent to specifying -std=c89.")); |
| |
| static llvm::cl::list<std::string> |
| TargetFeatures("mattr", llvm::cl::CommaSeparated, |
| llvm::cl::desc("Target specific attributes (-mattr=help for details)")); |
| |
| static llvm::cl::opt<unsigned> |
| TemplateDepth("ftemplate-depth", llvm::cl::init(99), |
| llvm::cl::desc("Maximum depth of recursive template " |
| "instantiation")); |
| |
| // FIXME: add: |
| // -fdollars-in-identifiers |
| static void InitializeLanguageStandard(LangOptions &Options, LangKind LK, |
| TargetInfo *Target) { |
| // Allow the target to set the default the langauge options as it sees fit. |
| Target->getDefaultLangOptions(Options); |
| |
| // If there are any -mattr options, pass them to the target for validation and |
| // processing. The driver should have already consolidated all the |
| // target-feature settings and passed them to us in the -mattr list. The |
| // -mattr list is treated by the code generator as a diff against the -mcpu |
| // setting, but the driver should pass all enabled options as "+" settings. |
| // This means that the target should only look at + settings. |
| if (!TargetFeatures.empty() |
| // FIXME: The driver is not quite yet ready for this. |
| && 0) { |
| std::string ErrorStr; |
| int Opt = Target->HandleTargetFeatures(&TargetFeatures[0], |
| TargetFeatures.size(), ErrorStr); |
| if (Opt != -1) { |
| if (ErrorStr.empty()) |
| fprintf(stderr, "invalid feature '%s'\n", |
| TargetFeatures[Opt].c_str()); |
| else |
| fprintf(stderr, "feature '%s': %s\n", |
| TargetFeatures[Opt].c_str(), ErrorStr.c_str()); |
| exit(1); |
| } |
| } |
| |
| if (Ansi) // "The -ansi option is equivalent to -std=c89." |
| LangStd = lang_c89; |
| |
| if (LangStd == lang_unspecified) { |
| // Based on the base language, pick one. |
| switch (LK) { |
| default: assert(0 && "Unknown base language"); |
| case langkind_c: |
| case langkind_asm_cpp: |
| case langkind_c_cpp: |
| case langkind_c_pch: |
| case langkind_objc: |
| case langkind_objc_cpp: |
| case langkind_objc_pch: |
| LangStd = lang_gnu99; |
| break; |
| case langkind_cxx: |
| case langkind_cxx_cpp: |
| case langkind_objcxx: |
| case langkind_objcxx_cpp: |
| case langkind_objcxx_pch: |
| LangStd = lang_gnucxx98; |
| break; |
| } |
| } |
| |
| switch (LangStd) { |
| default: assert(0 && "Unknown language standard!"); |
| |
| // Fall through from newer standards to older ones. This isn't really right. |
| // FIXME: Enable specifically the right features based on the language stds. |
| case lang_gnucxx0x: |
| case lang_cxx0x: |
| Options.CPlusPlus0x = 1; |
| // FALL THROUGH |
| case lang_gnucxx98: |
| case lang_cxx98: |
| Options.CPlusPlus = 1; |
| Options.CXXOperatorNames = !NoOperatorNames; |
| Options.Boolean = 1; |
| // FALL THROUGH. |
| case lang_gnu99: |
| case lang_c99: |
| Options.C99 = 1; |
| Options.HexFloats = 1; |
| // FALL THROUGH. |
| case lang_gnu89: |
| Options.BCPLComment = 1; // Only for C99/C++. |
| // FALL THROUGH. |
| case lang_c94: |
| Options.Digraphs = 1; // C94, C99, C++. |
| // FALL THROUGH. |
| case lang_c89: |
| break; |
| } |
| |
| if (Options.CPlusPlus) { |
| Options.C99 = 0; |
| Options.HexFloats = (LangStd == lang_gnucxx98 || LangStd==lang_gnucxx0x); |
| } |
| |
| if (LangStd == lang_c89 || LangStd == lang_c94 || LangStd == lang_gnu89) |
| Options.ImplicitInt = 1; |
| else |
| Options.ImplicitInt = 0; |
| |
| // Mimicing gcc's behavior, trigraphs are only enabled if -trigraphs or -ansi |
| // is specified, or -std is set to a conforming mode. |
| Options.Trigraphs = LangStd < lang_gnu_START; |
| if (Trigraphs.getPosition()) |
| Options.Trigraphs = Trigraphs; // Command line option wins. |
| |
| // If in a conformant language mode (e.g. -std=c99) Blocks defaults to off |
| // even if they are normally on for the target. In GNU modes (e.g. |
| // -std=gnu99) the default for blocks depends on the target settings. |
| // However, blocks are not turned off when compiling Obj-C or Obj-C++ code. |
| if (!Options.ObjC1 && LangStd < lang_gnu_START) |
| Options.Blocks = 0; |
| |
| Options.DollarIdents = 1; // FIXME: Really a target property. |
| if (PascalStrings.getPosition()) |
| Options.PascalStrings = PascalStrings; |
| Options.Microsoft = MSExtensions; |
| Options.WritableStrings = WritableStrings; |
| if (NoLaxVectorConversions.getPosition()) |
| Options.LaxVectorConversions = 0; |
| Options.Exceptions = Exceptions; |
| if (EnableBlocks.getPosition()) |
| Options.Blocks = EnableBlocks; |
| |
| if (Freestanding) |
| Options.Freestanding = 1; |
| |
| Options.MathErrno = MathErrno; |
| |
| Options.InstantiationDepth = TemplateDepth; |
| |
| // Override the default runtime if the user requested it. |
| if (NeXTRuntime) |
| Options.NeXTRuntime = 1; |
| else if (GNURuntime) |
| Options.NeXTRuntime = 0; |
| |
| if (ObjCNonFragileABI) |
| Options.ObjCNonFragileABI = 1; |
| |
| if (EmitAllDecls) |
| Options.EmitAllDecls = 1; |
| } |
| |
| static llvm::cl::opt<bool> |
| ObjCExclusiveGC("fobjc-gc-only", |
| llvm::cl::desc("Use GC exclusively for Objective-C related " |
| "memory management")); |
| |
| static llvm::cl::opt<bool> |
| ObjCEnableGC("fobjc-gc", |
| llvm::cl::desc("Enable Objective-C garbage collection")); |
| |
| void InitializeGCMode(LangOptions &Options) { |
| if (ObjCExclusiveGC) |
| Options.setGCMode(LangOptions::GCOnly); |
| else if (ObjCEnableGC) |
| Options.setGCMode(LangOptions::HybridGC); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Target Triple Processing. |
| //===----------------------------------------------------------------------===// |
| |
| static llvm::cl::opt<std::string> |
| TargetTriple("triple", |
| llvm::cl::desc("Specify target triple (e.g. i686-apple-darwin9)")); |
| |
| static llvm::cl::opt<std::string> |
| Arch("arch", llvm::cl::desc("Specify target architecture (e.g. i686)")); |
| |
| static llvm::cl::opt<std::string> |
| MacOSVersionMin("mmacosx-version-min", |
| llvm::cl::desc("Specify target Mac OS/X version (e.g. 10.5)")); |
| |
| // If -mmacosx-version-min=10.3.9 is specified, change the triple from being |
| // something like powerpc-apple-darwin9 to powerpc-apple-darwin7 |
| static void HandleMacOSVersionMin(std::string &Triple) { |
| std::string::size_type DarwinDashIdx = Triple.find("-darwin"); |
| if (DarwinDashIdx == std::string::npos) { |
| fprintf(stderr, |
| "-mmacosx-version-min only valid for darwin (Mac OS/X) targets\n"); |
| exit(1); |
| } |
| unsigned DarwinNumIdx = DarwinDashIdx + strlen("-darwin"); |
| |
| // Remove the number. |
| Triple.resize(DarwinNumIdx); |
| |
| // Validate that MacOSVersionMin is a 'version number', starting with 10.[3-9] |
| bool MacOSVersionMinIsInvalid = false; |
| int VersionNum = 0; |
| if (MacOSVersionMin.size() < 4 || |
| MacOSVersionMin.substr(0, 3) != "10." || |
| !isdigit(MacOSVersionMin[3])) { |
| MacOSVersionMinIsInvalid = true; |
| } else { |
| const char *Start = MacOSVersionMin.c_str()+3; |
| char *End = 0; |
| VersionNum = (int)strtol(Start, &End, 10); |
| |
| // The version number must be in the range 0-9. |
| MacOSVersionMinIsInvalid = (unsigned)VersionNum > 9; |
| |
| // Turn MacOSVersionMin into a darwin number: e.g. 10.3.9 is 3 -> 7. |
| Triple += llvm::itostr(VersionNum+4); |
| |
| if (End[0] == '.' && isdigit(End[1]) && End[2] == '\0') { // 10.4.7 is ok. |
| // Add the period piece (.7) to the end of the triple. This gives us |
| // something like ...-darwin8.7 |
| Triple += End; |
| } else if (End[0] != '\0') { // "10.4" is ok. 10.4x is not. |
| MacOSVersionMinIsInvalid = true; |
| } |
| } |
| |
| if (MacOSVersionMinIsInvalid) { |
| fprintf(stderr, |
| "-mmacosx-version-min=%s is invalid, expected something like '10.4'.\n", |
| MacOSVersionMin.c_str()); |
| exit(1); |
| } |
| } |
| |
| /// CreateTargetTriple - Process the various options that affect the target |
| /// triple and build a final aggregate triple that we are compiling for. |
| static std::string CreateTargetTriple() { |
| // Initialize base triple. If a -triple option has been specified, use |
| // that triple. Otherwise, default to the host triple. |
| std::string Triple = TargetTriple; |
| if (Triple.empty()) { |
| Triple = LLVM_HOSTTRIPLE; |
| |
| // Force i<N>86 to i386 when using LLVM_HOSTTRIPLE. |
| if (Triple[0] == 'i' && isdigit(Triple[1]) && |
| Triple[2] == '8' && Triple[3] == '6') |
| Triple[1] = '3'; |
| |
| // On darwin, we want to update the version to match that of the |
| // host. |
| std::string::size_type DarwinDashIdx = Triple.find("-darwin"); |
| if (DarwinDashIdx != std::string::npos) { |
| Triple.resize(DarwinDashIdx + strlen("-darwin")); |
| |
| // Only add the major part of the os version. |
| std::string Version = llvm::sys::getOSVersion(); |
| Triple += Version.substr(0, Version.find('.')); |
| } |
| } |
| |
| // If -arch foo was specified, remove the architecture from the triple we have |
| // so far and replace it with the specified one. |
| if (!Arch.empty()) { |
| // Decompose the base triple into "arch" and suffix. |
| std::string::size_type FirstDashIdx = Triple.find('-'); |
| |
| if (FirstDashIdx == std::string::npos) { |
| fprintf(stderr, |
| "Malformed target triple: \"%s\" ('-' could not be found).\n", |
| Triple.c_str()); |
| exit(1); |
| } |
| |
| Triple = Arch + std::string(Triple.begin()+FirstDashIdx, Triple.end()); |
| } |
| |
| // If -mmacosx-version-min=10.3.9 is specified, change the triple from being |
| // something like powerpc-apple-darwin9 to powerpc-apple-darwin7 |
| if (!MacOSVersionMin.empty()) |
| HandleMacOSVersionMin(Triple); |
| |
| return Triple; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Preprocessor Initialization |
| //===----------------------------------------------------------------------===// |
| |
| // FIXME: Preprocessor builtins to support. |
| // -A... - Play with #assertions |
| // -undef - Undefine all predefined macros |
| |
| static llvm::cl::list<std::string> |
| D_macros("D", llvm::cl::value_desc("macro"), llvm::cl::Prefix, |
| llvm::cl::desc("Predefine the specified macro")); |
| static llvm::cl::list<std::string> |
| U_macros("U", llvm::cl::value_desc("macro"), llvm::cl::Prefix, |
| llvm::cl::desc("Undefine the specified macro")); |
| |
| static llvm::cl::list<std::string> |
| ImplicitIncludes("include", llvm::cl::value_desc("file"), |
| llvm::cl::desc("Include file before parsing")); |
| |
| |
| // Append a #define line to Buf for Macro. Macro should be of the form XXX, |
| // in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit |
| // "#define XXX Y z W". To get a #define with no value, use "XXX=". |
| static void DefineBuiltinMacro(std::vector<char> &Buf, const char *Macro, |
| const char *Command = "#define ") { |
| Buf.insert(Buf.end(), Command, Command+strlen(Command)); |
| if (const char *Equal = strchr(Macro, '=')) { |
| // Turn the = into ' '. |
| Buf.insert(Buf.end(), Macro, Equal); |
| Buf.push_back(' '); |
| Buf.insert(Buf.end(), Equal+1, Equal+strlen(Equal)); |
| } else { |
| // Push "macroname 1". |
| Buf.insert(Buf.end(), Macro, Macro+strlen(Macro)); |
| Buf.push_back(' '); |
| Buf.push_back('1'); |
| } |
| Buf.push_back('\n'); |
| } |
| |
| /// AddImplicitInclude - Add an implicit #include of the specified file to the |
| /// predefines buffer. |
| static void AddImplicitInclude(std::vector<char> &Buf, const std::string &File){ |
| const char *Inc = "#include \""; |
| Buf.insert(Buf.end(), Inc, Inc+strlen(Inc)); |
| Buf.insert(Buf.end(), File.begin(), File.end()); |
| Buf.push_back('"'); |
| Buf.push_back('\n'); |
| } |
| |
| |
| /// InitializePreprocessor - Initialize the preprocessor getting it and the |
| /// environment ready to process a single file. This returns true on error. |
| /// |
| static bool InitializePreprocessor(Preprocessor &PP, |
| bool InitializeSourceMgr, |
| const std::string &InFile) { |
| FileManager &FileMgr = PP.getFileManager(); |
| |
| // Figure out where to get and map in the main file. |
| SourceManager &SourceMgr = PP.getSourceManager(); |
| |
| if (InitializeSourceMgr) { |
| if (InFile != "-") { |
| const FileEntry *File = FileMgr.getFile(InFile); |
| if (File) SourceMgr.createMainFileID(File, SourceLocation()); |
| if (SourceMgr.getMainFileID().isInvalid()) { |
| fprintf(stderr, "Error reading '%s'!\n",InFile.c_str()); |
| return true; |
| } |
| } else { |
| llvm::MemoryBuffer *SB = llvm::MemoryBuffer::getSTDIN(); |
| if (SB) SourceMgr.createMainFileIDForMemBuffer(SB); |
| if (SourceMgr.getMainFileID().isInvalid()) { |
| fprintf(stderr, "Error reading standard input! Empty?\n"); |
| return true; |
| } |
| } |
| } |
| |
| std::vector<char> PredefineBuffer; |
| |
| // Add macros from the command line. |
| unsigned d = 0, D = D_macros.size(); |
| unsigned u = 0, U = U_macros.size(); |
| while (d < D || u < U) { |
| if (u == U || (d < D && D_macros.getPosition(d) < U_macros.getPosition(u))) |
| DefineBuiltinMacro(PredefineBuffer, D_macros[d++].c_str()); |
| else |
| DefineBuiltinMacro(PredefineBuffer, U_macros[u++].c_str(), "#undef "); |
| } |
| |
| // FIXME: Read any files specified by -imacros. |
| |
| // Add implicit #includes from -include. |
| for (unsigned i = 0, e = ImplicitIncludes.size(); i != e; ++i) |
| AddImplicitInclude(PredefineBuffer, ImplicitIncludes[i]); |
| |
| // Null terminate PredefinedBuffer and add it. |
| PredefineBuffer.push_back(0); |
| PP.setPredefines(&PredefineBuffer[0]); |
| |
| // Once we've read this, we're done. |
| return false; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Preprocessor include path information. |
| //===----------------------------------------------------------------------===// |
| |
| // This tool exports a large number of command line options to control how the |
| // preprocessor searches for header files. At root, however, the Preprocessor |
| // object takes a very simple interface: a list of directories to search for |
| // |
| // FIXME: -nostdinc,-nostdinc++ |
| // FIXME: -imultilib |
| // |
| // FIXME: -imacros |
| |
| static llvm::cl::opt<bool> |
| nostdinc("nostdinc", llvm::cl::desc("Disable standard #include directories")); |
| |
| // Various command line options. These four add directories to each chain. |
| static llvm::cl::list<std::string> |
| F_dirs("F", llvm::cl::value_desc("directory"), llvm::cl::Prefix, |
| llvm::cl::desc("Add directory to framework include search path")); |
| static llvm::cl::list<std::string> |
| I_dirs("I", llvm::cl::value_desc("directory"), llvm::cl::Prefix, |
| llvm::cl::desc("Add directory to include search path")); |
| static llvm::cl::list<std::string> |
| idirafter_dirs("idirafter", llvm::cl::value_desc("directory"), llvm::cl::Prefix, |
| llvm::cl::desc("Add directory to AFTER include search path")); |
| static llvm::cl::list<std::string> |
| iquote_dirs("iquote", llvm::cl::value_desc("directory"), llvm::cl::Prefix, |
| llvm::cl::desc("Add directory to QUOTE include search path")); |
| static llvm::cl::list<std::string> |
| isystem_dirs("isystem", llvm::cl::value_desc("directory"), llvm::cl::Prefix, |
| llvm::cl::desc("Add directory to SYSTEM include search path")); |
| |
| // These handle -iprefix/-iwithprefix/-iwithprefixbefore. |
| static llvm::cl::list<std::string> |
| iprefix_vals("iprefix", llvm::cl::value_desc("prefix"), llvm::cl::Prefix, |
| llvm::cl::desc("Set the -iwithprefix/-iwithprefixbefore prefix")); |
| static llvm::cl::list<std::string> |
| iwithprefix_vals("iwithprefix", llvm::cl::value_desc("dir"), llvm::cl::Prefix, |
| llvm::cl::desc("Set directory to SYSTEM include search path with prefix")); |
| static llvm::cl::list<std::string> |
| iwithprefixbefore_vals("iwithprefixbefore", llvm::cl::value_desc("dir"), |
| llvm::cl::Prefix, |
| llvm::cl::desc("Set directory to include search path with prefix")); |
| |
| static llvm::cl::opt<std::string> |
| isysroot("isysroot", llvm::cl::value_desc("dir"), llvm::cl::init("/"), |
| llvm::cl::desc("Set the system root directory (usually /)")); |
| |
| // Finally, implement the code that groks the options above. |
| |
| /// InitializeIncludePaths - Process the -I options and set them in the |
| /// HeaderSearch object. |
| void InitializeIncludePaths(const char *Argv0, HeaderSearch &Headers, |
| FileManager &FM, const LangOptions &Lang) { |
| InitHeaderSearch Init(Headers, Verbose, isysroot); |
| |
| // Handle -I... and -F... options, walking the lists in parallel. |
| unsigned Iidx = 0, Fidx = 0; |
| while (Iidx < I_dirs.size() && Fidx < F_dirs.size()) { |
| if (I_dirs.getPosition(Iidx) < F_dirs.getPosition(Fidx)) { |
| Init.AddPath(I_dirs[Iidx], InitHeaderSearch::Angled, false, true, false); |
| ++Iidx; |
| } else { |
| Init.AddPath(F_dirs[Fidx], InitHeaderSearch::Angled, false, true, true); |
| ++Fidx; |
| } |
| } |
| |
| // Consume what's left from whatever list was longer. |
| for (; Iidx != I_dirs.size(); ++Iidx) |
| Init.AddPath(I_dirs[Iidx], InitHeaderSearch::Angled, false, true, false); |
| for (; Fidx != F_dirs.size(); ++Fidx) |
| Init.AddPath(F_dirs[Fidx], InitHeaderSearch::Angled, false, true, true); |
| |
| // Handle -idirafter... options. |
| for (unsigned i = 0, e = idirafter_dirs.size(); i != e; ++i) |
| Init.AddPath(idirafter_dirs[i], InitHeaderSearch::After, |
| false, true, false); |
| |
| // Handle -iquote... options. |
| for (unsigned i = 0, e = iquote_dirs.size(); i != e; ++i) |
| Init.AddPath(iquote_dirs[i], InitHeaderSearch::Quoted, false, true, false); |
| |
| // Handle -isystem... options. |
| for (unsigned i = 0, e = isystem_dirs.size(); i != e; ++i) |
| Init.AddPath(isystem_dirs[i], InitHeaderSearch::System, false, true, false); |
| |
| // Walk the -iprefix/-iwithprefix/-iwithprefixbefore argument lists in |
| // parallel, processing the values in order of occurance to get the right |
| // prefixes. |
| { |
| std::string Prefix = ""; // FIXME: this isn't the correct default prefix. |
| unsigned iprefix_idx = 0; |
| unsigned iwithprefix_idx = 0; |
| unsigned iwithprefixbefore_idx = 0; |
| bool iprefix_done = iprefix_vals.empty(); |
| bool iwithprefix_done = iwithprefix_vals.empty(); |
| bool iwithprefixbefore_done = iwithprefixbefore_vals.empty(); |
| while (!iprefix_done || !iwithprefix_done || !iwithprefixbefore_done) { |
| if (!iprefix_done && |
| (iwithprefix_done || |
| iprefix_vals.getPosition(iprefix_idx) < |
| iwithprefix_vals.getPosition(iwithprefix_idx)) && |
| (iwithprefixbefore_done || |
| iprefix_vals.getPosition(iprefix_idx) < |
| iwithprefixbefore_vals.getPosition(iwithprefixbefore_idx))) { |
| Prefix = iprefix_vals[iprefix_idx]; |
| ++iprefix_idx; |
| iprefix_done = iprefix_idx == iprefix_vals.size(); |
| } else if (!iwithprefix_done && |
| (iwithprefixbefore_done || |
| iwithprefix_vals.getPosition(iwithprefix_idx) < |
| iwithprefixbefore_vals.getPosition(iwithprefixbefore_idx))) { |
| Init.AddPath(Prefix+iwithprefix_vals[iwithprefix_idx], |
| InitHeaderSearch::System, false, false, false); |
| ++iwithprefix_idx; |
| iwithprefix_done = iwithprefix_idx == iwithprefix_vals.size(); |
| } else { |
| Init.AddPath(Prefix+iwithprefixbefore_vals[iwithprefixbefore_idx], |
| InitHeaderSearch::Angled, false, false, false); |
| ++iwithprefixbefore_idx; |
| iwithprefixbefore_done = |
| iwithprefixbefore_idx == iwithprefixbefore_vals.size(); |
| } |
| } |
| } |
| |
| Init.AddDefaultEnvVarPaths(Lang); |
| |
| // Add the clang headers, which are relative to the clang binary. |
| llvm::sys::Path MainExecutablePath = |
| llvm::sys::Path::GetMainExecutable(Argv0, |
| (void*)(intptr_t)InitializeIncludePaths); |
| if (!MainExecutablePath.isEmpty()) { |
| MainExecutablePath.eraseComponent(); // Remove /clang from foo/bin/clang |
| MainExecutablePath.eraseComponent(); // Remove /bin from foo/bin |
| |
| // Get foo/lib/clang/1.0/include |
| // |
| // FIXME: Don't embed version here. |
| MainExecutablePath.appendComponent("lib"); |
| MainExecutablePath.appendComponent("clang"); |
| MainExecutablePath.appendComponent("1.0"); |
| MainExecutablePath.appendComponent("include"); |
| |
| // We pass true to ignore sysroot so that we *always* look for clang headers |
| // relative to our executable, never relative to -isysroot. |
| Init.AddPath(MainExecutablePath.c_str(), InitHeaderSearch::System, |
| false, false, false, true /*ignore sysroot*/); |
| } |
| |
| if (!nostdinc) |
| Init.AddDefaultSystemIncludePaths(Lang); |
| |
| // Now that we have collected all of the include paths, merge them all |
| // together and tell the preprocessor about them. |
| |
| Init.Realize(); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Driver PreprocessorFactory - For lazily generating preprocessors ... |
| //===----------------------------------------------------------------------===// |
| |
| namespace { |
| class VISIBILITY_HIDDEN DriverPreprocessorFactory : public PreprocessorFactory { |
| const std::string &InFile; |
| Diagnostic &Diags; |
| const LangOptions &LangInfo; |
| TargetInfo &Target; |
| SourceManager &SourceMgr; |
| HeaderSearch &HeaderInfo; |
| bool InitializeSourceMgr; |
| |
| public: |
| DriverPreprocessorFactory(const std::string &infile, |
| Diagnostic &diags, const LangOptions &opts, |
| TargetInfo &target, SourceManager &SM, |
| HeaderSearch &Headers) |
| : InFile(infile), Diags(diags), LangInfo(opts), Target(target), |
| SourceMgr(SM), HeaderInfo(Headers), InitializeSourceMgr(true) {} |
| |
| |
| virtual ~DriverPreprocessorFactory() {} |
| |
| virtual Preprocessor* CreatePreprocessor() { |
| llvm::OwningPtr<PTHManager> PTHMgr; |
| |
| // Use PTH? |
| if (!TokenCache.empty()) |
| PTHMgr.reset(PTHManager::Create(TokenCache, &Diags)); |
| |
| // Create the Preprocessor. |
| llvm::OwningPtr<Preprocessor> PP(new Preprocessor(Diags, LangInfo, Target, |
| SourceMgr, HeaderInfo, |
| PTHMgr.get())); |
| |
| // Note that this is different then passing PTHMgr to Preprocessor's ctor. |
| // That argument is used as the IdentifierInfoLookup argument to |
| // IdentifierTable's ctor. |
| if (PTHMgr) { |
| PTHMgr->setPreprocessor(PP.get()); |
| PP->setPTHManager(PTHMgr.take()); |
| } |
| |
| if (InitializePreprocessor(*PP, InitializeSourceMgr, InFile)) { |
| return NULL; |
| } |
| |
| /// FIXME: PP can only handle one callback |
| if (ProgAction != PrintPreprocessedInput) { |
| const char* ErrStr; |
| bool DFG = CreateDependencyFileGen(PP.get(), OutputFile, InFile, ErrStr); |
| if (!DFG && ErrStr) { |
| fprintf(stderr, "%s", ErrStr); |
| return NULL; |
| } |
| } |
| |
| InitializeSourceMgr = false; |
| return PP.take(); |
| } |
| }; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Basic Parser driver |
| //===----------------------------------------------------------------------===// |
| |
| static void ParseFile(Preprocessor &PP, MinimalAction *PA) { |
| Parser P(PP, *PA); |
| PP.EnterMainSourceFile(); |
| |
| // Parsing the specified input file. |
| P.ParseTranslationUnit(); |
| delete PA; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Code generation options |
| //===----------------------------------------------------------------------===// |
| |
| static llvm::cl::opt<bool> |
| GenerateDebugInfo("g", |
| llvm::cl::desc("Generate source level debug information")); |
| |
| static llvm::cl::opt<bool> |
| OptSize("Os", llvm::cl::desc("Optimize for size")); |
| |
| // It might be nice to add bounds to the CommandLine library directly. |
| struct OptLevelParser : public llvm::cl::parser<unsigned> { |
| bool parse(llvm::cl::Option &O, const char *ArgName, |
| const std::string &Arg, unsigned &Val) { |
| if (llvm::cl::parser<unsigned>::parse(O, ArgName, Arg, Val)) |
| return true; |
| // FIXME: Support -O4. |
| if (Val > 3) |
| return O.error(": '" + Arg + "' invalid optimization level!"); |
| return false; |
| } |
| }; |
| static llvm::cl::opt<unsigned, false, OptLevelParser> |
| OptLevel("O", llvm::cl::Prefix, |
| llvm::cl::desc("Optimization level"), |
| llvm::cl::init(0)); |
| |
| static llvm::cl::opt<std::string> |
| TargetCPU("mcpu", |
| llvm::cl::desc("Target a specific cpu type (-mcpu=help for details)")); |
| |
| static void InitializeCompileOptions(CompileOptions &Opts) { |
| Opts.OptimizeSize = OptSize; |
| Opts.DebugInfo = GenerateDebugInfo; |
| if (OptSize) { |
| // -Os implies -O2 |
| // FIXME: Diagnose conflicting options. |
| Opts.OptimizationLevel = 2; |
| } else { |
| Opts.OptimizationLevel = OptLevel; |
| } |
| |
| // FIXME: There are llvm-gcc options to control these selectively. |
| Opts.InlineFunctions = (Opts.OptimizationLevel > 1); |
| Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !OptSize); |
| Opts.SimplifyLibCalls = !Freestanding; |
| |
| #ifdef NDEBUG |
| Opts.VerifyModule = 0; |
| #endif |
| |
| Opts.CPU = TargetCPU; |
| Opts.Features.insert(Opts.Features.end(), |
| TargetFeatures.begin(), TargetFeatures.end()); |
| |
| // Handle -ftime-report. |
| Opts.TimePasses = TimeReport; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Main driver |
| //===----------------------------------------------------------------------===// |
| |
| /// CreateASTConsumer - Create the ASTConsumer for the corresponding program |
| /// action. These consumers can operate on both ASTs that are freshly |
| /// parsed from source files as well as those deserialized from Bitcode. |
| /// Note that PP and PPF may be null here. |
| static ASTConsumer *CreateASTConsumer(const std::string& InFile, |
| Diagnostic& Diag, FileManager& FileMgr, |
| const LangOptions& LangOpts, |
| Preprocessor *PP, |
| PreprocessorFactory *PPF) { |
| switch (ProgAction) { |
| default: |
| return NULL; |
| |
| case ASTPrint: |
| return CreateASTPrinter(); |
| |
| case ASTDump: |
| return CreateASTDumper(); |
| |
| case ASTView: |
| return CreateASTViewer(); |
| |
| case PrintDeclContext: |
| return CreateDeclContextPrinter(); |
| |
| case EmitHTML: |
| return CreateHTMLPrinter(OutputFile, Diag, PP, PPF); |
| |
| case InheritanceView: |
| return CreateInheritanceViewer(InheritanceViewCls); |
| |
| case TestSerialization: |
| return CreateSerializationTest(Diag, FileMgr); |
| |
| case EmitAssembly: |
| case EmitLLVM: |
| case EmitBC: |
| case EmitLLVMOnly: { |
| BackendAction Act; |
| if (ProgAction == EmitAssembly) |
| Act = Backend_EmitAssembly; |
| else if (ProgAction == EmitLLVM) |
| Act = Backend_EmitLL; |
| else if (ProgAction == EmitLLVMOnly) |
| Act = Backend_EmitNothing; |
| else |
| Act = Backend_EmitBC; |
| |
| CompileOptions Opts; |
| InitializeCompileOptions(Opts); |
| return CreateBackendConsumer(Act, Diag, LangOpts, Opts, |
| InFile, OutputFile); |
| } |
| |
| case SerializeAST: |
| // FIXME: Allow user to tailor where the file is written. |
| return CreateASTSerializer(InFile, OutputFile, Diag); |
| |
| case RewriteObjC: |
| return CreateCodeRewriterTest(InFile, OutputFile, Diag, LangOpts); |
| |
| case RewriteBlocks: |
| return CreateBlockRewriter(InFile, OutputFile, Diag, LangOpts); |
| |
| case RunAnalysis: |
| return CreateAnalysisConsumer(Diag, PP, PPF, LangOpts, OutputFile); |
| } |
| } |
| |
| /// ProcessInputFile - Process a single input file with the specified state. |
| /// |
| static void ProcessInputFile(Preprocessor &PP, PreprocessorFactory &PPF, |
| const std::string &InFile, ProgActions PA) { |
| llvm::OwningPtr<ASTConsumer> Consumer; |
| bool ClearSourceMgr = false; |
| |
| switch (PA) { |
| default: |
| Consumer.reset(CreateASTConsumer(InFile, PP.getDiagnostics(), |
| PP.getFileManager(), PP.getLangOptions(), |
| &PP, &PPF)); |
| |
| if (!Consumer) { |
| fprintf(stderr, "Unexpected program action!\n"); |
| HadErrors = true; |
| return; |
| } |
| |
| break; |
| |
| case DumpRawTokens: { |
| llvm::TimeRegion Timer(ClangFrontendTimer); |
| SourceManager &SM = PP.getSourceManager(); |
| // Start lexing the specified input file. |
| Lexer RawLex(SM.getMainFileID(), SM, PP.getLangOptions()); |
| RawLex.SetKeepWhitespaceMode(true); |
| |
| Token RawTok; |
| RawLex.LexFromRawLexer(RawTok); |
| while (RawTok.isNot(tok::eof)) { |
| PP.DumpToken(RawTok, true); |
| fprintf(stderr, "\n"); |
| RawLex.LexFromRawLexer(RawTok); |
| } |
| ClearSourceMgr = true; |
| break; |
| } |
| case DumpTokens: { // Token dump mode. |
| llvm::TimeRegion Timer(ClangFrontendTimer); |
| Token Tok; |
| // Start preprocessing the specified input file. |
| PP.EnterMainSourceFile(); |
| do { |
| PP.Lex(Tok); |
| PP.DumpToken(Tok, true); |
| fprintf(stderr, "\n"); |
| } while (Tok.isNot(tok::eof)); |
| ClearSourceMgr = true; |
| break; |
| } |
| case RunPreprocessorOnly: { // Just lex as fast as we can, no output. |
| llvm::TimeRegion Timer(ClangFrontendTimer); |
| Token Tok; |
| // Start parsing the specified input file. |
| PP.EnterMainSourceFile(); |
| do { |
| PP.Lex(Tok); |
| } while (Tok.isNot(tok::eof)); |
| ClearSourceMgr = true; |
| break; |
| } |
| |
| case GeneratePCH: { |
| llvm::TimeRegion Timer(ClangFrontendTimer); |
| CacheTokens(PP, OutputFile); |
| ClearSourceMgr = true; |
| break; |
| } |
| |
| case PrintPreprocessedInput: { // -E mode. |
| llvm::TimeRegion Timer(ClangFrontendTimer); |
| DoPrintPreprocessedInput(PP, OutputFile); |
| ClearSourceMgr = true; |
| break; |
| } |
| |
| case ParseNoop: { // -parse-noop |
| llvm::TimeRegion Timer(ClangFrontendTimer); |
| ParseFile(PP, new MinimalAction(PP)); |
| ClearSourceMgr = true; |
| break; |
| } |
| |
| case ParsePrintCallbacks: { |
| llvm::TimeRegion Timer(ClangFrontendTimer); |
| ParseFile(PP, CreatePrintParserActionsAction(PP)); |
| ClearSourceMgr = true; |
| break; |
| } |
| |
| case ParseSyntaxOnly: { // -fsyntax-only |
| llvm::TimeRegion Timer(ClangFrontendTimer); |
| Consumer.reset(new ASTConsumer()); |
| break; |
| } |
| |
| case RewriteMacros: |
| RewriteMacrosInInput(PP, InFile, OutputFile); |
| ClearSourceMgr = true; |
| break; |
| |
| case RewriteTest: { |
| DoRewriteTest(PP, InFile, OutputFile); |
| ClearSourceMgr = true; |
| break; |
| } |
| } |
| |
| if (Consumer) { |
| TranslationUnit *TU = 0; |
| if (DisableFree) { |
| ASTContext *Context = new ASTContext(PP.getLangOptions(), |
| PP.getSourceManager(), |
| PP.getTargetInfo(), |
| PP.getIdentifierTable(), |
| PP.getSelectorTable(), |
| /* FreeMemory = */ false); |
| TU = new TranslationUnit(*Context); |
| } |
| ParseAST(PP, Consumer.get(), TU, Stats); |
| } |
| |
| if (VerifyDiagnostics) |
| if (CheckDiagnostics(PP)) |
| exit(1); |
| |
| if (Stats) { |
| fprintf(stderr, "\nSTATISTICS FOR '%s':\n", InFile.c_str()); |
| PP.PrintStats(); |
| PP.getIdentifierTable().PrintStats(); |
| PP.getHeaderSearchInfo().PrintStats(); |
| PP.getSourceManager().PrintStats(); |
| fprintf(stderr, "\n"); |
| } |
| |
| // For a multi-file compilation, some things are ok with nuking the source |
| // manager tables, other require stable fileid/macroid's across multiple |
| // files. |
| if (ClearSourceMgr) |
| PP.getSourceManager().clearIDTables(); |
| |
| if (DisableFree) |
| Consumer.take(); |
| } |
| |
| static void ProcessSerializedFile(const std::string& InFile, Diagnostic& Diag, |
| FileManager& FileMgr) { |
| |
| if (VerifyDiagnostics) { |
| fprintf(stderr, "-verify does not yet work with serialized ASTs.\n"); |
| exit (1); |
| } |
| |
| llvm::sys::Path Filename(InFile); |
| |
| if (!Filename.isValid()) { |
| fprintf(stderr, "serialized file '%s' not available.\n",InFile.c_str()); |
| exit (1); |
| } |
| |
| llvm::OwningPtr<TranslationUnit> TU(ReadASTBitcodeFile(Filename, FileMgr)); |
| |
| if (!TU) { |
| fprintf(stderr, "error: file '%s' could not be deserialized\n", |
| InFile.c_str()); |
| exit (1); |
| } |
| |
| // Observe that we use the source file name stored in the deserialized |
| // translation unit, rather than InFile. |
| llvm::OwningPtr<ASTConsumer> |
| Consumer(CreateASTConsumer(InFile, Diag, FileMgr, TU->getLangOptions(), |
| 0, 0)); |
| |
| if (!Consumer) { |
| fprintf(stderr, "Unsupported program action with serialized ASTs!\n"); |
| exit (1); |
| } |
| |
| Consumer->Initialize(TU->getContext()); |
| |
| // FIXME: We need to inform Consumer about completed TagDecls as well. |
| for (TranslationUnit::iterator I=TU->begin(), E=TU->end(); I!=E; ++I) |
| Consumer->HandleTopLevelDecl(*I); |
| } |
| |
| |
| static llvm::cl::list<std::string> |
| InputFilenames(llvm::cl::Positional, llvm::cl::desc("<input files>")); |
| |
| static bool isSerializedFile(const std::string& InFile) { |
| if (InFile.size() < 4) |
| return false; |
| |
| const char* s = InFile.c_str()+InFile.size()-4; |
| return s[0] == '.' && s[1] == 'a' && s[2] == 's' && s[3] == 't'; |
| } |
| |
| |
| int main(int argc, char **argv) { |
| llvm::sys::PrintStackTraceOnErrorSignal(); |
| llvm::PrettyStackTraceProgram X(argc, argv); |
| llvm::cl::ParseCommandLineOptions(argc, argv, |
| "LLVM 'Clang' Compiler: http://clang.llvm.org\n"); |
| |
| if (TimeReport) |
| ClangFrontendTimer = new llvm::Timer("Clang front-end time"); |
| |
| // If no input was specified, read from stdin. |
| if (InputFilenames.empty()) |
| InputFilenames.push_back("-"); |
| |
| // Create a file manager object to provide access to and cache the filesystem. |
| FileManager FileMgr; |
| |
| // Create the diagnostic client for reporting errors or for |
| // implementing -verify. |
| DiagnosticClient* TextDiagClient = 0; |
| |
| if (!VerifyDiagnostics) { |
| // Print diagnostics to stderr by default. |
| TextDiagClient = new TextDiagnosticPrinter(llvm::errs(), |
| !NoShowColumn, |
| !NoCaretDiagnostics, |
| !NoShowLocation); |
| } else { |
| // When checking diagnostics, just buffer them up. |
| TextDiagClient = new TextDiagnosticBuffer(); |
| |
| if (InputFilenames.size() != 1) { |
| fprintf(stderr, |
| "-verify only works on single input files for now.\n"); |
| return 1; |
| } |
| } |
| |
| // Configure our handling of diagnostics. |
| llvm::OwningPtr<DiagnosticClient> DiagClient(TextDiagClient); |
| Diagnostic Diags(DiagClient.get()); |
| if (ProcessWarningOptions(Diags)) |
| return 1; |
| |
| // -I- is a deprecated GCC feature, scan for it and reject it. |
| for (unsigned i = 0, e = I_dirs.size(); i != e; ++i) { |
| if (I_dirs[i] == "-") { |
| Diags.Report(FullSourceLoc(), diag::err_pp_I_dash_not_supported); |
| I_dirs.erase(I_dirs.begin()+i); |
| --i; |
| } |
| } |
| |
| // Get information about the target being compiled for. |
| std::string Triple = CreateTargetTriple(); |
| llvm::OwningPtr<TargetInfo> Target(TargetInfo::CreateTargetInfo(Triple)); |
| |
| if (Target == 0) { |
| fprintf(stderr, "Sorry, I don't know what target this is: %s\n", |
| Triple.c_str()); |
| fprintf(stderr, "Please use -triple or -arch.\n"); |
| return 1; |
| } |
| |
| if (!InheritanceViewCls.empty()) // C++ visualization? |
| ProgAction = InheritanceView; |
| |
| llvm::OwningPtr<SourceManager> SourceMgr; |
| |
| for (unsigned i = 0, e = InputFilenames.size(); i != e; ++i) { |
| const std::string &InFile = InputFilenames[i]; |
| |
| if (isSerializedFile(InFile)) { |
| Diags.setClient(TextDiagClient); |
| ProcessSerializedFile(InFile,Diags,FileMgr); |
| continue; |
| } |
| |
| /// Create a SourceManager object. This tracks and owns all the file |
| /// buffers allocated to a translation unit. |
| if (!SourceMgr) |
| SourceMgr.reset(new SourceManager()); |
| else |
| SourceMgr->clearIDTables(); |
| |
| // Initialize language options, inferring file types from input filenames. |
| LangOptions LangInfo; |
| InitializeBaseLanguage(); |
| LangKind LK = GetLanguage(InFile); |
| bool PCH = InitializeLangOptions(LangInfo, LK); |
| InitializeGCMode(LangInfo); |
| InitializeLanguageStandard(LangInfo, LK, Target.get()); |
| |
| // Process the -I options and set them in the HeaderInfo. |
| HeaderSearch HeaderInfo(FileMgr); |
| |
| InitializeIncludePaths(argv[0], HeaderInfo, FileMgr, LangInfo); |
| |
| // Set up the preprocessor with these options. |
| DriverPreprocessorFactory PPFactory(InFile, Diags, LangInfo, *Target, |
| *SourceMgr.get(), HeaderInfo); |
| |
| llvm::OwningPtr<Preprocessor> PP(PPFactory.CreatePreprocessor()); |
| |
| if (!PP) |
| continue; |
| |
| // Create the HTMLDiagnosticsClient if we are using one. Otherwise, |
| // always reset to using TextDiagClient. |
| llvm::OwningPtr<DiagnosticClient> TmpClient; |
| |
| if (!HTMLDiag.empty()) { |
| TmpClient.reset(CreateHTMLDiagnosticClient(HTMLDiag, PP.get(), |
| &PPFactory)); |
| Diags.setClient(TmpClient.get()); |
| } |
| else |
| Diags.setClient(TextDiagClient); |
| |
| // Process the source file. |
| ProcessInputFile(*PP, PPFactory, InFile, PCH ? GeneratePCH : ProgAction); |
| |
| HeaderInfo.ClearFileInfo(); |
| } |
| |
| if (Verbose) |
| fprintf(stderr, "clang version 1.0 based upon " PACKAGE_STRING |
| " hosted on " LLVM_HOSTTRIPLE "\n"); |
| |
| if (unsigned NumDiagnostics = Diags.getNumDiagnostics()) |
| fprintf(stderr, "%d diagnostic%s generated.\n", NumDiagnostics, |
| (NumDiagnostics == 1 ? "" : "s")); |
| |
| if (Stats) { |
| FileMgr.PrintStats(); |
| fprintf(stderr, "\n"); |
| } |
| |
| // If verifying diagnostics and we reached here, all is well. |
| if (VerifyDiagnostics) |
| return 0; |
| |
| delete ClangFrontendTimer; |
| |
| // Managed static deconstruction. Useful for making things like |
| // -time-passes usable. |
| llvm::llvm_shutdown(); |
| |
| return HadErrors || (Diags.getNumErrors() != 0); |
| } |