| //===--- Options.cpp - clang-cc Option Handling ---------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // This file contains "pure" option handling, it is only responsible for turning |
| // the options into internal *Option classes, but shouldn't have any other |
| // logic. |
| |
| #include "Options.h" |
| #include "clang/Frontend/CompileOptions.h" |
| #include "clang/Frontend/PCHReader.h" |
| #include "clang/Frontend/PreprocessorOptions.h" |
| #include "clang/Basic/LangOptions.h" |
| #include "clang/Basic/TargetInfo.h" |
| #include "llvm/ADT/STLExtras.h" |
| #include "llvm/ADT/StringMap.h" |
| #include "llvm/Support/CommandLine.h" |
| #include <stdio.h> |
| |
| using namespace clang; |
| |
| //===----------------------------------------------------------------------===// |
| // Code Generation Options |
| //===----------------------------------------------------------------------===// |
| |
| namespace codegenoptions { |
| |
| static llvm::cl::opt<bool> |
| DisableLLVMOptimizations("disable-llvm-optzns", |
| llvm::cl::desc("Don't run LLVM optimization passes")); |
| |
| static llvm::cl::opt<bool> |
| DisableRedZone("disable-red-zone", |
| llvm::cl::desc("Do not emit code that uses the red zone."), |
| llvm::cl::init(false)); |
| |
| static llvm::cl::opt<bool> |
| GenerateDebugInfo("g", |
| llvm::cl::desc("Generate source level debug information")); |
| |
| static llvm::cl::opt<bool> |
| NoCommon("fno-common", |
| llvm::cl::desc("Compile common globals like normal definitions"), |
| llvm::cl::ValueDisallowed); |
| |
| static llvm::cl::opt<bool> |
| NoImplicitFloat("no-implicit-float", |
| llvm::cl::desc("Don't generate implicit floating point instructions (x86-only)"), |
| llvm::cl::init(false)); |
| |
| static llvm::cl::opt<bool> |
| NoMergeConstants("fno-merge-all-constants", |
| llvm::cl::desc("Disallow merging of constants.")); |
| |
| // 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, llvm::StringRef ArgName, |
| llvm::StringRef Arg, unsigned &Val) { |
| if (llvm::cl::parser<unsigned>::parse(O, ArgName, Arg, Val)) |
| return true; |
| 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<bool> |
| OptSize("Os", llvm::cl::desc("Optimize for size")); |
| |
| static llvm::cl::opt<std::string> |
| TargetCPU("mcpu", |
| llvm::cl::desc("Target a specific cpu type (-mcpu=help for details)")); |
| |
| static llvm::cl::list<std::string> |
| TargetFeatures("target-feature", llvm::cl::desc("Target specific attributes")); |
| |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Language Options |
| //===----------------------------------------------------------------------===// |
| |
| namespace langoptions { |
| |
| static llvm::cl::opt<bool> |
| AllowBuiltins("fbuiltin", llvm::cl::init(true), |
| llvm::cl::desc("Disable implicit builtin knowledge of functions")); |
| |
| static llvm::cl::opt<bool> |
| AltiVec("faltivec", llvm::cl::desc("Enable AltiVec vector initializer syntax"), |
| llvm::cl::init(false)); |
| |
| static llvm::cl::opt<bool> |
| AccessControl("faccess-control", |
| llvm::cl::desc("Enable C++ access control")); |
| |
| static llvm::cl::opt<bool> |
| CharIsSigned("fsigned-char", |
| llvm::cl::desc("Force char to be a signed/unsigned type")); |
| |
| static llvm::cl::opt<bool> |
| DollarsInIdents("fdollars-in-identifiers", |
| llvm::cl::desc("Allow '$' in identifiers")); |
| |
| static llvm::cl::opt<bool> |
| EmitAllDecls("femit-all-decls", |
| llvm::cl::desc("Emit all declarations, even if unused")); |
| |
| static llvm::cl::opt<bool> |
| EnableBlocks("fblocks", llvm::cl::desc("enable the 'blocks' language feature")); |
| |
| static llvm::cl::opt<bool> |
| EnableHeinousExtensions("fheinous-gnu-extensions", |
| llvm::cl::desc("enable GNU extensions that you really really shouldn't use"), |
| llvm::cl::ValueDisallowed, llvm::cl::Hidden); |
| |
| static llvm::cl::opt<bool> |
| Exceptions("fexceptions", |
| llvm::cl::desc("Enable support for exception handling")); |
| |
| 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> |
| GNURuntime("fgnu-runtime", |
| llvm::cl::desc("Generate output compatible with the standard GNU " |
| "Objective-C runtime")); |
| |
| /// LangStds - Language standards we support. |
| enum LangStds { |
| lang_unspecified, |
| lang_c89, lang_c94, lang_c99, |
| lang_gnu89, 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"), |
| clEnumValEnd)); |
| |
| 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<std::string> |
| MainFileName("main-file-name", |
| llvm::cl::desc("Main file name to use for debug info")); |
| |
| static llvm::cl::opt<bool> |
| MathErrno("fmath-errno", llvm::cl::init(true), |
| llvm::cl::desc("Require math functions to respect errno")); |
| |
| static llvm::cl::opt<bool> |
| NeXTRuntime("fnext-runtime", |
| llvm::cl::desc("Generate output compatible with the NeXT " |
| "runtime")); |
| |
| static llvm::cl::opt<bool> |
| NoElideConstructors("fno-elide-constructors", |
| llvm::cl::desc("Disable C++ copy constructor elision")); |
| |
| 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> |
| NoOperatorNames("fno-operator-names", |
| llvm::cl::desc("Do not treat C++ operator name keywords as " |
| "synonyms for operators")); |
| |
| static llvm::cl::opt<std::string> |
| ObjCConstantStringClass("fconstant-string-class", |
| llvm::cl::value_desc("class name"), |
| llvm::cl::desc("Specify the class to use for constant " |
| "Objective-C string objects.")); |
| |
| static llvm::cl::opt<bool> |
| ObjCEnableGC("fobjc-gc", |
| llvm::cl::desc("Enable Objective-C garbage collection")); |
| |
| 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> |
| ObjCEnableGCBitmapPrint("print-ivar-layout", |
| llvm::cl::desc("Enable Objective-C Ivar layout bitmap print trace")); |
| |
| static llvm::cl::opt<bool> |
| ObjCNonFragileABI("fobjc-nonfragile-abi", |
| llvm::cl::desc("enable objective-c's nonfragile abi")); |
| |
| static llvm::cl::opt<bool> |
| OverflowChecking("ftrapv", |
| llvm::cl::desc("Trap on integer overflow"), |
| llvm::cl::init(false)); |
| |
| static llvm::cl::opt<unsigned> |
| PICLevel("pic-level", llvm::cl::desc("Value for __PIC__")); |
| |
| static llvm::cl::opt<bool> |
| PThread("pthread", llvm::cl::desc("Support POSIX threads in generated code"), |
| llvm::cl::init(false)); |
| |
| static llvm::cl::opt<bool> |
| PascalStrings("fpascal-strings", |
| llvm::cl::desc("Recognize and construct Pascal-style " |
| "string literals")); |
| |
| // FIXME: Move to CompileOptions. |
| static llvm::cl::opt<bool> |
| Rtti("frtti", llvm::cl::init(true), |
| llvm::cl::desc("Enable generation of rtti information")); |
| |
| static llvm::cl::opt<bool> |
| ShortWChar("fshort-wchar", |
| llvm::cl::desc("Force wchar_t to be a short unsigned int")); |
| |
| static llvm::cl::opt<bool> |
| StaticDefine("static-define", llvm::cl::desc("Should __STATIC__ be defined")); |
| |
| static llvm::cl::opt<int> |
| StackProtector("stack-protector", |
| llvm::cl::desc("Enable stack protectors"), |
| llvm::cl::init(-1)); |
| |
| static llvm::cl::opt<LangOptions::VisibilityMode> |
| SymbolVisibility("fvisibility", |
| llvm::cl::desc("Set the default symbol visibility:"), |
| llvm::cl::init(LangOptions::Default), |
| llvm::cl::values(clEnumValN(LangOptions::Default, "default", |
| "Use default symbol visibility"), |
| clEnumValN(LangOptions::Hidden, "hidden", |
| "Use hidden symbol visibility"), |
| clEnumValN(LangOptions::Protected,"protected", |
| "Use protected symbol visibility"), |
| clEnumValEnd)); |
| |
| static llvm::cl::opt<unsigned> |
| TemplateDepth("ftemplate-depth", llvm::cl::init(99), |
| llvm::cl::desc("Maximum depth of recursive template " |
| "instantiation")); |
| |
| static llvm::cl::opt<bool> |
| Trigraphs("trigraphs", llvm::cl::desc("Process trigraph sequences")); |
| |
| static llvm::cl::opt<bool> |
| WritableStrings("fwritable-strings", |
| llvm::cl::desc("Store string literals as writable data")); |
| |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // General Preprocessor Options |
| //===----------------------------------------------------------------------===// |
| |
| namespace preprocessoroptions { |
| |
| 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> |
| ImplicitIncludes("include", llvm::cl::value_desc("file"), |
| llvm::cl::desc("Include file before parsing")); |
| static llvm::cl::list<std::string> |
| ImplicitMacroIncludes("imacros", llvm::cl::value_desc("file"), |
| llvm::cl::desc("Include macros from file before parsing")); |
| |
| static llvm::cl::opt<std::string> |
| ImplicitIncludePCH("include-pch", llvm::cl::value_desc("file"), |
| llvm::cl::desc("Include precompiled header file")); |
| |
| static llvm::cl::opt<std::string> |
| ImplicitIncludePTH("include-pth", llvm::cl::value_desc("file"), |
| llvm::cl::desc("Include file before parsing")); |
| |
| 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::opt<bool> |
| UndefMacros("undef", llvm::cl::value_desc("macro"), |
| llvm::cl::desc("undef all system defines")); |
| |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Option Object Construction |
| //===----------------------------------------------------------------------===// |
| |
| /// ComputeTargetFeatures - Recompute the target feature list to only |
| /// be the list of things that are enabled, based on the target cpu |
| /// and feature list. |
| void clang::ComputeFeatureMap(TargetInfo &Target, |
| llvm::StringMap<bool> &Features) { |
| using namespace codegenoptions; |
| assert(Features.empty() && "invalid map"); |
| |
| // Initialize the feature map based on the target. |
| Target.getDefaultFeatures(TargetCPU, Features); |
| |
| // Apply the user specified deltas. |
| for (llvm::cl::list<std::string>::iterator it = TargetFeatures.begin(), |
| ie = TargetFeatures.end(); it != ie; ++it) { |
| const char *Name = it->c_str(); |
| |
| // FIXME: Don't handle errors like this. |
| if (Name[0] != '-' && Name[0] != '+') { |
| fprintf(stderr, "error: clang-cc: invalid target feature string: %s\n", |
| Name); |
| exit(1); |
| } |
| if (!Target.setFeatureEnabled(Features, Name + 1, (Name[0] == '+'))) { |
| fprintf(stderr, "error: clang-cc: invalid target feature name: %s\n", |
| Name + 1); |
| exit(1); |
| } |
| } |
| } |
| |
| void clang::InitializeCompileOptions(CompileOptions &Opts, |
| const llvm::StringMap<bool> &Features) { |
| using namespace codegenoptions; |
| Opts.OptimizeSize = OptSize; |
| Opts.DebugInfo = GenerateDebugInfo; |
| Opts.DisableLLVMOpts = DisableLLVMOptimizations; |
| |
| // -Os implies -O2 |
| Opts.OptimizationLevel = OptSize ? 2 : OptLevel; |
| |
| // We must always run at least the always inlining pass. |
| Opts.Inlining = (Opts.OptimizationLevel > 1) ? CompileOptions::NormalInlining |
| : CompileOptions::OnlyAlwaysInlining; |
| |
| Opts.UnrollLoops = (Opts.OptimizationLevel > 1 && !OptSize); |
| Opts.SimplifyLibCalls = 1; |
| |
| #ifdef NDEBUG |
| Opts.VerifyModule = 0; |
| #endif |
| |
| Opts.CPU = TargetCPU; |
| Opts.Features.clear(); |
| for (llvm::StringMap<bool>::const_iterator it = Features.begin(), |
| ie = Features.end(); it != ie; ++it) { |
| // FIXME: If we are completely confident that we have the right set, we only |
| // need to pass the minuses. |
| std::string Name(it->second ? "+" : "-"); |
| Name += it->first(); |
| Opts.Features.push_back(Name); |
| } |
| |
| Opts.NoCommon = NoCommon; |
| |
| Opts.DisableRedZone = DisableRedZone; |
| Opts.NoImplicitFloat = NoImplicitFloat; |
| |
| Opts.MergeAllConstants = !NoMergeConstants; |
| } |
| |
| void clang::InitializePreprocessorOptions(PreprocessorOptions &Opts) { |
| using namespace preprocessoroptions; |
| |
| Opts.setImplicitPCHInclude(ImplicitIncludePCH); |
| Opts.setImplicitPTHInclude(ImplicitIncludePTH); |
| |
| // Use predefines? |
| Opts.setUsePredefines(!UndefMacros); |
| |
| // 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))) |
| Opts.addMacroDef(D_macros[d++]); |
| else |
| Opts.addMacroUndef(U_macros[u++]); |
| } |
| |
| // If -imacros are specified, include them now. These are processed before |
| // any -include directives. |
| for (unsigned i = 0, e = ImplicitMacroIncludes.size(); i != e; ++i) |
| Opts.addMacroInclude(ImplicitMacroIncludes[i]); |
| |
| // Add the ordered list of -includes, sorting in the implicit include options |
| // at the appropriate location. |
| llvm::SmallVector<std::pair<unsigned, std::string*>, 8> OrderedPaths; |
| std::string OriginalFile; |
| |
| if (!ImplicitIncludePTH.empty()) |
| OrderedPaths.push_back(std::make_pair(ImplicitIncludePTH.getPosition(), |
| &ImplicitIncludePTH)); |
| if (!ImplicitIncludePCH.empty()) { |
| OriginalFile = PCHReader::getOriginalSourceFile(ImplicitIncludePCH); |
| // FIXME: Don't fail like this. |
| if (OriginalFile.empty()) |
| exit(1); |
| OrderedPaths.push_back(std::make_pair(ImplicitIncludePCH.getPosition(), |
| &OriginalFile)); |
| } |
| for (unsigned i = 0, e = ImplicitIncludes.size(); i != e; ++i) |
| OrderedPaths.push_back(std::make_pair(ImplicitIncludes.getPosition(i), |
| &ImplicitIncludes[i])); |
| llvm::array_pod_sort(OrderedPaths.begin(), OrderedPaths.end()); |
| |
| for (unsigned i = 0, e = OrderedPaths.size(); i != e; ++i) |
| Opts.addInclude(*OrderedPaths[i].second); |
| } |
| |
| void clang::InitializeLangOptions(LangOptions &Options, LangKind LK, |
| TargetInfo &Target, |
| const CompileOptions &CompileOpts, |
| const llvm::StringMap<bool> &Features) { |
| using namespace langoptions; |
| |
| bool NoPreprocess = false; |
| |
| 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: |
| // Do nothing. |
| 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: |
| Options.ObjC1 = Options.ObjC2 = 1; |
| break; |
| case langkind_objcxx_cpp: |
| NoPreprocess = true; |
| // FALLTHROUGH |
| case langkind_objcxx: |
| Options.ObjC1 = Options.ObjC2 = 1; |
| Options.CPlusPlus = 1; |
| break; |
| case langkind_ocl: |
| Options.OpenCL = 1; |
| Options.AltiVec = 1; |
| Options.CXXOperatorNames = 1; |
| Options.LaxVectorConversions = 1; |
| break; |
| } |
| |
| if (ObjCExclusiveGC) |
| Options.setGCMode(LangOptions::GCOnly); |
| else if (ObjCEnableGC) |
| Options.setGCMode(LangOptions::HybridGC); |
| |
| if (ObjCEnableGCBitmapPrint) |
| Options.ObjCGCBitmapPrint = 1; |
| |
| if (AltiVec) |
| Options.AltiVec = 1; |
| |
| if (PThread) |
| Options.POSIXThreads = 1; |
| |
| Options.setVisibilityMode(SymbolVisibility); |
| Options.OverflowChecking = OverflowChecking; |
| |
| |
| // Allow the target to set the default the language options as it sees fit. |
| Target.getDefaultLangOptions(Options); |
| |
| // Pass the map of target features to the target for validation and |
| // processing. |
| Target.HandleTargetFeatures(Features); |
| |
| if (LangStd == lang_unspecified) { |
| // Based on the base language, pick one. |
| switch (LK) { |
| case langkind_ast: assert(0 && "Invalid call for AST inputs"); |
| case lang_unspecified: assert(0 && "Unknown base language"); |
| case langkind_ocl: |
| LangStd = lang_c99; |
| break; |
| case langkind_c: |
| case langkind_asm_cpp: |
| case langkind_c_cpp: |
| case langkind_objc: |
| case langkind_objc_cpp: |
| LangStd = lang_gnu99; |
| break; |
| case langkind_cxx: |
| case langkind_cxx_cpp: |
| case langkind_objcxx: |
| case langkind_objcxx_cpp: |
| 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; |
| // 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; |
| } |
| |
| // GNUMode - Set if we're in gnu99, gnu89, gnucxx98, etc. |
| switch (LangStd) { |
| default: assert(0 && "Unknown language standard!"); |
| case lang_gnucxx0x: |
| case lang_gnucxx98: |
| case lang_gnu99: |
| case lang_gnu89: |
| Options.GNUMode = 1; |
| break; |
| case lang_cxx0x: |
| case lang_cxx98: |
| case lang_c99: |
| case lang_c94: |
| case lang_c89: |
| Options.GNUMode = 0; |
| break; |
| } |
| |
| if (Options.CPlusPlus) { |
| Options.C99 = 0; |
| Options.HexFloats = 0; |
| } |
| |
| 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 |
| // is specified, or -std is set to a conforming mode. |
| Options.Trigraphs = !Options.GNUMode; |
| if (Trigraphs.getPosition()) |
| Options.Trigraphs = Trigraphs; // Command line option wins if specified. |
| |
| // 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 && !Options.GNUMode) |
| Options.Blocks = 0; |
| |
| // Default to not accepting '$' in identifiers when preprocessing assembler, |
| // but do accept when preprocessing C. FIXME: these defaults are right for |
| // darwin, are they right everywhere? |
| Options.DollarIdents = LK != langkind_asm_cpp; |
| if (DollarsInIdents.getPosition()) // Explicit setting overrides default. |
| Options.DollarIdents = DollarsInIdents; |
| |
| if (PascalStrings.getPosition()) |
| Options.PascalStrings = PascalStrings; |
| if (MSExtensions.getPosition()) |
| Options.Microsoft = MSExtensions; |
| Options.WritableStrings = WritableStrings; |
| if (NoLaxVectorConversions.getPosition()) |
| Options.LaxVectorConversions = 0; |
| Options.Exceptions = Exceptions; |
| Options.Rtti = Rtti; |
| if (EnableBlocks.getPosition()) |
| Options.Blocks = EnableBlocks; |
| if (CharIsSigned.getPosition()) |
| Options.CharIsSigned = CharIsSigned; |
| if (ShortWChar.getPosition()) |
| Options.ShortWChar = ShortWChar; |
| |
| if (!AllowBuiltins) |
| Options.NoBuiltin = 1; |
| if (Freestanding) |
| Options.Freestanding = Options.NoBuiltin = 1; |
| |
| if (EnableHeinousExtensions) |
| Options.HeinousExtensions = 1; |
| |
| if (AccessControl) |
| Options.AccessControl = 1; |
| |
| Options.ElideConstructors = !NoElideConstructors; |
| |
| // OpenCL and C++ both have bool, true, false keywords. |
| Options.Bool = Options.OpenCL | Options.CPlusPlus; |
| |
| 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 (!ObjCConstantStringClass.empty()) |
| Options.ObjCConstantStringClass = ObjCConstantStringClass.c_str(); |
| |
| if (ObjCNonFragileABI) |
| Options.ObjCNonFragileABI = 1; |
| |
| if (EmitAllDecls) |
| Options.EmitAllDecls = 1; |
| |
| // The __OPTIMIZE_SIZE__ define is tied to -Oz, which we don't support. |
| Options.OptimizeSize = 0; |
| Options.Optimize = !!CompileOpts.OptimizationLevel; |
| |
| assert(PICLevel <= 2 && "Invalid value for -pic-level"); |
| Options.PICLevel = PICLevel; |
| |
| Options.GNUInline = !Options.C99; |
| // FIXME: This is affected by other options (-fno-inline). |
| |
| // This is the __NO_INLINE__ define, which just depends on things like the |
| // optimization level and -fno-inline, not actually whether the backend has |
| // inlining enabled. |
| Options.NoInline = !CompileOpts.OptimizationLevel; |
| |
| Options.Static = StaticDefine; |
| |
| switch (StackProtector) { |
| default: |
| assert(StackProtector <= 2 && "Invalid value for -stack-protector"); |
| case -1: break; |
| case 0: Options.setStackProtectorMode(LangOptions::SSPOff); break; |
| case 1: Options.setStackProtectorMode(LangOptions::SSPOn); break; |
| case 2: Options.setStackProtectorMode(LangOptions::SSPReq); break; |
| } |
| |
| if (MainFileName.getPosition()) |
| Options.setMainFileName(MainFileName.c_str()); |
| |
| Target.setForcedLangOptions(Options); |
| } |