1//===--- CodeGenOptions.def - Code generation option database ------ C++ -*-===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file defines the code generation options. Users of this file 11// must define the CODEGENOPT macro to make use of this information. 12// Optionally, the user may also define ENUM_CODEGENOPT (for options 13// that have enumeration type and VALUE_CODEGENOPT is a code 14// generation option that describes a value rather than a flag. 15// 16//===----------------------------------------------------------------------===// 17#ifndef CODEGENOPT 18# error Define the CODEGENOPT macro to handle language options 19#endif 20 21#ifndef VALUE_CODEGENOPT 22# define VALUE_CODEGENOPT(Name, Bits, Default) \ 23CODEGENOPT(Name, Bits, Default) 24#endif 25 26#ifndef ENUM_CODEGENOPT 27# define ENUM_CODEGENOPT(Name, Type, Bits, Default) \ 28CODEGENOPT(Name, Bits, Default) 29#endif 30 31CODEGENOPT(AsmVerbose , 1, 0) ///< -dA, -fverbose-asm. 32CODEGENOPT(ObjCAutoRefCountExceptions , 1, 0) ///< Whether ARC should be EH-safe. 33CODEGENOPT(CoverageExtraChecksum, 1, 0) ///< Whether we need a second checksum for functions in GCNO files. 34CODEGENOPT(CoverageFunctionNamesInData, 1, 0) ///< Whether we should include function names in GCDA files. 35CODEGENOPT(CUDAIsDevice , 1, 0) ///< Set when compiling for CUDA device. 36CODEGENOPT(CXAAtExit , 1, 1) ///< Use __cxa_atexit for calling destructors. 37CODEGENOPT(CXXCtorDtorAliases, 1, 0) ///< Emit complete ctors/dtors as linker 38 ///< aliases to base ctors when possible. 39CODEGENOPT(DataSections , 1, 0) ///< Set when -fdata-sections is enabled. 40CODEGENOPT(DisableFPElim , 1, 0) ///< Set when -fomit-frame-pointer is enabled. 41CODEGENOPT(DisableLLVMOpts , 1, 0) ///< Don't run any optimizations, for use in 42 ///< getting .bc files that correspond to the 43 ///< internal state before optimizations are 44 ///< done. 45CODEGENOPT(DisableRedZone , 1, 0) ///< Set when -mno-red-zone is enabled. 46CODEGENOPT(DisableTailCalls , 1, 0) ///< Do not emit tail calls. 47CODEGENOPT(EmitDeclMetadata , 1, 0) ///< Emit special metadata indicating what 48 ///< Decl* various IR entities came from. 49 ///< Only useful when running CodeGen as a 50 ///< subroutine. 51CODEGENOPT(EmitGcovArcs , 1, 0) ///< Emit coverage data files, aka. GCDA. 52CODEGENOPT(EmitGcovNotes , 1, 0) ///< Emit coverage "notes" files, aka GCNO. 53CODEGENOPT(EmitOpenCLArgMetadata , 1, 0) ///< Emit OpenCL kernel arg metadata. 54/// \brief FP_CONTRACT mode (on/off/fast). 55ENUM_CODEGENOPT(FPContractMode, FPContractModeKind, 2, FPC_On) 56CODEGENOPT(ForbidGuardVariables , 1, 0) ///< Issue errors if C++ guard variables 57 ///< are required. 58CODEGENOPT(FunctionSections , 1, 0) ///< Set when -ffunction-sections is enabled. 59CODEGENOPT(HiddenWeakVTables , 1, 0) ///< Emit weak vtables, RTTI, and thunks with 60 ///< hidden visibility. 61CODEGENOPT(InstrumentFunctions , 1, 0) ///< Set when -finstrument-functions is 62 ///< enabled. 63CODEGENOPT(InstrumentForProfiling , 1, 0) ///< Set when -pg is enabled. 64CODEGENOPT(LessPreciseFPMAD , 1, 0) ///< Enable less precise MAD instructions to 65 ///< be generated. 66CODEGENOPT(MergeAllConstants , 1, 1) ///< Merge identical constants. 67CODEGENOPT(NoCommon , 1, 0) ///< Set when -fno-common or C++ is enabled. 68CODEGENOPT(NoDwarf2CFIAsm , 1, 0) ///< Set when -fno-dwarf2-cfi-asm is enabled. 69CODEGENOPT(NoDwarfDirectoryAsm , 1, 0) ///< Set when -fno-dwarf-directory-asm is 70 ///< enabled. 71CODEGENOPT(NoExecStack , 1, 0) ///< Set when -Wa,--noexecstack is enabled. 72CODEGENOPT(NoGlobalMerge , 1, 0) ///< Set when -mno-global-merge is enabled. 73CODEGENOPT(NoImplicitFloat , 1, 0) ///< Set when -mno-implicit-float is enabled. 74CODEGENOPT(NoInfsFPMath , 1, 0) ///< Assume FP arguments, results not +-Inf. 75CODEGENOPT(NoInline , 1, 0) ///< Set when -fno-inline is enabled. 76 ///< Disables use of the inline keyword. 77CODEGENOPT(NoNaNsFPMath , 1, 0) ///< Assume FP arguments, results not NaN. 78CODEGENOPT(NoZeroInitializedInBSS , 1, 0) ///< -fno-zero-initialized-in-bss. 79/// \brief Method of Objective-C dispatch to use. 80ENUM_CODEGENOPT(ObjCDispatchMethod, ObjCDispatchMethodKind, 2, Legacy) 81CODEGENOPT(OmitLeafFramePointer , 1, 0) ///< Set when -momit-leaf-frame-pointer is 82 ///< enabled. 83VALUE_CODEGENOPT(OptimizationLevel, 3, 0) ///< The -O[0-4] option specified. 84VALUE_CODEGENOPT(OptimizeSize, 2, 0) ///< If -Os (==1) or -Oz (==2) is specified. 85CODEGENOPT(RelaxAll , 1, 0) ///< Relax all machine code instructions. 86CODEGENOPT(RelaxedAliasing , 1, 0) ///< Set when -fno-strict-aliasing is enabled. 87CODEGENOPT(SaveTempLabels , 1, 0) ///< Save temporary labels. 88CODEGENOPT(SanitizeAddressZeroBaseShadow , 1, 0) ///< Map shadow memory at zero 89 ///< offset in AddressSanitizer. 90CODEGENOPT(SanitizeMemoryTrackOrigins, 1, 0) ///< Enable tracking origins in 91 ///< MemorySanitizer 92CODEGENOPT(SanitizeUndefinedTrapOnError, 1, 0) ///< Set on 93 /// -fsanitize-undefined-trap-on-error 94CODEGENOPT(SimplifyLibCalls , 1, 1) ///< Set when -fbuiltin is enabled. 95CODEGENOPT(SoftFloat , 1, 0) ///< -soft-float. 96CODEGENOPT(StrictEnums , 1, 0) ///< Optimize based on strict enum definition. 97CODEGENOPT(TimePasses , 1, 0) ///< Set when -ftime-report is enabled. 98CODEGENOPT(UnitAtATime , 1, 1) ///< Unused. For mirroring GCC optimization 99 ///< selection. 100CODEGENOPT(UnrollLoops , 1, 0) ///< Control whether loops are unrolled. 101CODEGENOPT(UnsafeFPMath , 1, 0) ///< Allow unsafe floating point optzns. 102CODEGENOPT(UnwindTables , 1, 0) ///< Emit unwind tables. 103 104 /// Attempt to use register sized accesses to bit-fields in structures, when 105 /// possible. 106CODEGENOPT(UseRegisterSizedBitfieldAccess , 1, 0) 107 108CODEGENOPT(VerifyModule , 1, 1) ///< Control whether the module should be run 109 ///< through the LLVM Verifier. 110 111CODEGENOPT(StackRealignment , 1, 0) ///< Control whether to permit stack 112 ///< realignment. 113CODEGENOPT(UseInitArray , 1, 0) ///< Control whether to use .init_array or 114 ///< .ctors. 115VALUE_CODEGENOPT(StackAlignment , 32, 0) ///< Overrides default stack 116 ///< alignment, if not 0. 117CODEGENOPT(DebugColumnInfo, 1, 0) ///< Whether or not to use column information 118 ///< in debug info. 119 120CODEGENOPT(ModulesAutolink, 1, 0) ///< Whether to auto-link imported modules 121 122/// The user specified number of registers to be used for integral arguments, 123/// or 0 if unspecified. 124VALUE_CODEGENOPT(NumRegisterParameters, 32, 0) 125 126/// The lower bound for a buffer to be considered for stack protection. 127VALUE_CODEGENOPT(SSPBufferSize, 32, 0) 128 129/// The kind of generated debug info. 130ENUM_CODEGENOPT(DebugInfo, DebugInfoKind, 2, NoDebugInfo) 131 132/// The kind of inlining to perform. 133ENUM_CODEGENOPT(Inlining, InliningMethod, 2, NoInlining) 134 135/// The default TLS model to use. 136ENUM_CODEGENOPT(DefaultTLSModel, TLSModel, 2, GeneralDynamicTLSModel) 137 138CODEGENOPT(SanitizeRecover, 1, 1) ///< Attempt to recover from sanitizer checks 139 ///< by continuing execution when possible 140 141#undef CODEGENOPT 142#undef ENUM_CODEGENOPT 143#undef VALUE_CODEGENOPT 144 145