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(DisableIntegratedAS, 1, 0) ///< -no-integrated-as 32CODEGENOPT(CompressDebugSections, 1, 0) ///< -Wa,-compress-debug-sections 33CODEGENOPT(Autolink , 1, 1) ///< -fno-autolink 34CODEGENOPT(AsmVerbose , 1, 0) ///< -dA, -fverbose-asm. 35CODEGENOPT(ObjCAutoRefCountExceptions , 1, 0) ///< Whether ARC should be EH-safe. 36CODEGENOPT(CoverageExtraChecksum, 1, 0) ///< Whether we need a second checksum for functions in GCNO files. 37CODEGENOPT(CoverageNoFunctionNamesInData, 1, 0) ///< Do not include function names in GCDA files. 38CODEGENOPT(CoverageExitBlockBeforeBody, 1, 0) ///< Whether to emit the exit block before the body blocks in GCNO files. 39CODEGENOPT(CXAAtExit , 1, 1) ///< Use __cxa_atexit for calling destructors. 40CODEGENOPT(CXXCtorDtorAliases, 1, 0) ///< Emit complete ctors/dtors as linker 41 ///< aliases to base ctors when possible. 42CODEGENOPT(DataSections , 1, 0) ///< Set when -fdata-sections is enabled. 43CODEGENOPT(UniqueSectionNames, 1, 1) ///< Set for -funique-section-names. 44CODEGENOPT(DisableFPElim , 1, 0) ///< Set when -fomit-frame-pointer is enabled. 45CODEGENOPT(DisableFree , 1, 0) ///< Don't free memory. 46CODEGENOPT(DisableGCov , 1, 0) ///< Don't run the GCov pass, for testing. 47CODEGENOPT(DisableLLVMOpts , 1, 0) ///< Don't run any optimizations, for use in 48 ///< getting .bc files that correspond to the 49 ///< internal state before optimizations are 50 ///< done. 51CODEGENOPT(DisableLLVMPasses , 1, 0) ///< Don't run any LLVM IR passes to get 52 ///< the pristine IR generated by the 53 ///< frontend. 54CODEGENOPT(DisableRedZone , 1, 0) ///< Set when -mno-red-zone is enabled. 55CODEGENOPT(DisableTailCalls , 1, 0) ///< Do not emit tail calls. 56CODEGENOPT(EmitDeclMetadata , 1, 0) ///< Emit special metadata indicating what 57 ///< Decl* various IR entities came from. 58 ///< Only useful when running CodeGen as a 59 ///< subroutine. 60CODEGENOPT(EmitGcovArcs , 1, 0) ///< Emit coverage data files, aka. GCDA. 61CODEGENOPT(EmitGcovNotes , 1, 0) ///< Emit coverage "notes" files, aka GCNO. 62CODEGENOPT(EmitOpenCLArgMetadata , 1, 0) ///< Emit OpenCL kernel arg metadata. 63CODEGENOPT(EmulatedTLS , 1, 0) ///< Set when -femulated-tls is enabled. 64/// \brief FP_CONTRACT mode (on/off/fast). 65ENUM_CODEGENOPT(FPContractMode, FPContractModeKind, 2, FPC_On) 66CODEGENOPT(ForbidGuardVariables , 1, 0) ///< Issue errors if C++ guard variables 67 ///< are required. 68CODEGENOPT(FunctionSections , 1, 0) ///< Set when -ffunction-sections is enabled. 69CODEGENOPT(InstrumentFunctions , 1, 0) ///< Set when -finstrument-functions is 70 ///< enabled. 71CODEGENOPT(InstrumentForProfiling , 1, 0) ///< Set when -pg is enabled. 72CODEGENOPT(LessPreciseFPMAD , 1, 0) ///< Enable less precise MAD instructions to 73 ///< be generated. 74CODEGENOPT(PrepareForLTO , 1, 0) ///< Set when -flto is enabled on the 75 ///< compile step. 76CODEGENOPT(EmitFunctionSummary, 1, 0) ///< Set when -flto=thin is enabled on the 77 ///< compile step. 78CODEGENOPT(IncrementalLinkerCompatible, 1, 0) ///< Emit an object file which can 79 ///< be used with an incremental 80 ///< linker. 81CODEGENOPT(MergeAllConstants , 1, 1) ///< Merge identical constants. 82CODEGENOPT(MergeFunctions , 1, 0) ///< Set when -fmerge-functions is enabled. 83CODEGENOPT(MSVolatile , 1, 0) ///< Set when /volatile:ms is enabled. 84CODEGENOPT(NoCommon , 1, 0) ///< Set when -fno-common or C++ is enabled. 85CODEGENOPT(NoDwarfDirectoryAsm , 1, 0) ///< Set when -fno-dwarf-directory-asm is 86 ///< enabled. 87CODEGENOPT(NoExecStack , 1, 0) ///< Set when -Wa,--noexecstack is enabled. 88CODEGENOPT(FatalWarnings , 1, 0) ///< Set when -Wa,--fatal-warnings is 89 ///< enabled. 90CODEGENOPT(EnableSegmentedStacks , 1, 0) ///< Set when -fsplit-stack is enabled. 91CODEGENOPT(NoImplicitFloat , 1, 0) ///< Set when -mno-implicit-float is enabled. 92CODEGENOPT(NoInfsFPMath , 1, 0) ///< Assume FP arguments, results not +-Inf. 93CODEGENOPT(NoSignedZeros , 1, 0) ///< Allow ignoring the signedness of FP zero 94CODEGENOPT(ReciprocalMath , 1, 0) ///< Allow FP divisions to be reassociated. 95CODEGENOPT(NoInline , 1, 0) ///< Set when -fno-inline is enabled. 96 ///< Disables use of the inline keyword. 97CODEGENOPT(NoNaNsFPMath , 1, 0) ///< Assume FP arguments, results not NaN. 98CODEGENOPT(NoZeroInitializedInBSS , 1, 0) ///< -fno-zero-initialized-in-bss. 99/// \brief Method of Objective-C dispatch to use. 100ENUM_CODEGENOPT(ObjCDispatchMethod, ObjCDispatchMethodKind, 2, Legacy) 101CODEGENOPT(OmitLeafFramePointer , 1, 0) ///< Set when -momit-leaf-frame-pointer is 102 ///< enabled. 103VALUE_CODEGENOPT(OptimizationLevel, 2, 0) ///< The -O[0-3] option specified. 104VALUE_CODEGENOPT(OptimizeSize, 2, 0) ///< If -Os (==1) or -Oz (==2) is specified. 105 106CODEGENOPT(ProfileInstrGenerate , 1, 0) ///< Instrument code to generate 107 ///< execution counts to use with PGO. 108CODEGENOPT(CoverageMapping , 1, 0) ///< Generate coverage mapping regions to 109 ///< enable code coverage analysis. 110CODEGENOPT(DumpCoverageMapping , 1, 0) ///< Dump the generated coverage mapping 111 ///< regions. 112 113 /// If -fpcc-struct-return or -freg-struct-return is specified. 114ENUM_CODEGENOPT(StructReturnConvention, StructReturnConventionKind, 2, SRCK_Default) 115 116CODEGENOPT(RelaxAll , 1, 0) ///< Relax all machine code instructions. 117CODEGENOPT(RelaxedAliasing , 1, 0) ///< Set when -fno-strict-aliasing is enabled. 118CODEGENOPT(StructPathTBAA , 1, 0) ///< Whether or not to use struct-path TBAA. 119CODEGENOPT(SaveTempLabels , 1, 0) ///< Save temporary labels. 120CODEGENOPT(SanitizeAddressZeroBaseShadow , 1, 0) ///< Map shadow memory at zero 121 ///< offset in AddressSanitizer. 122CODEGENOPT(SanitizeMemoryTrackOrigins, 2, 0) ///< Enable tracking origins in 123 ///< MemorySanitizer 124CODEGENOPT(SanitizeMemoryUseAfterDtor, 1, 0) ///< Enable use-after-delete detection 125 ///< in MemorySanitizer 126CODEGENOPT(SanitizeCfiCrossDso, 1, 0) ///< Enable cross-dso support in CFI. 127CODEGENOPT(SanitizeCoverageType, 2, 0) ///< Type of sanitizer coverage 128 ///< instrumentation. 129CODEGENOPT(SanitizeCoverageIndirectCalls, 1, 0) ///< Enable sanitizer coverage 130 ///< for indirect calls. 131CODEGENOPT(SanitizeCoverageTraceBB, 1, 0) ///< Enable basic block tracing in 132 ///< in sanitizer coverage. 133CODEGENOPT(SanitizeCoverageTraceCmp, 1, 0) ///< Enable cmp instruction tracing 134 ///< in sanitizer coverage. 135CODEGENOPT(SanitizeCoverage8bitCounters, 1, 0) ///< Use 8-bit frequency counters 136 ///< in sanitizer coverage. 137CODEGENOPT(SimplifyLibCalls , 1, 1) ///< Set when -fbuiltin is enabled. 138CODEGENOPT(SoftFloat , 1, 0) ///< -soft-float. 139CODEGENOPT(StrictEnums , 1, 0) ///< Optimize based on strict enum definition. 140CODEGENOPT(StrictVTablePointers, 1, 0) ///< Optimize based on the strict vtable pointers 141CODEGENOPT(TimePasses , 1, 0) ///< Set when -ftime-report is enabled. 142CODEGENOPT(UnitAtATime , 1, 1) ///< Unused. For mirroring GCC optimization 143 ///< selection. 144CODEGENOPT(UnrollLoops , 1, 0) ///< Control whether loops are unrolled. 145CODEGENOPT(RerollLoops , 1, 0) ///< Control whether loops are rerolled. 146CODEGENOPT(UnsafeFPMath , 1, 0) ///< Allow unsafe floating point optzns. 147CODEGENOPT(UnwindTables , 1, 0) ///< Emit unwind tables. 148CODEGENOPT(VectorizeBB , 1, 0) ///< Run basic block vectorizer. 149CODEGENOPT(VectorizeLoop , 1, 0) ///< Run loop vectorizer. 150CODEGENOPT(VectorizeSLP , 1, 0) ///< Run SLP vectorizer. 151 152 /// Attempt to use register sized accesses to bit-fields in structures, when 153 /// possible. 154CODEGENOPT(UseRegisterSizedBitfieldAccess , 1, 0) 155 156CODEGENOPT(VerifyModule , 1, 1) ///< Control whether the module should be run 157 ///< through the LLVM Verifier. 158 159CODEGENOPT(StackRealignment , 1, 0) ///< Control whether to force stack 160 ///< realignment. 161CODEGENOPT(UseInitArray , 1, 0) ///< Control whether to use .init_array or 162 ///< .ctors. 163VALUE_CODEGENOPT(StackAlignment , 32, 0) ///< Overrides default stack 164 ///< alignment, if not 0. 165VALUE_CODEGENOPT(StackProbeSize , 32, 4096) ///< Overrides default stack 166 ///< probe size, even if 0. 167CODEGENOPT(DebugColumnInfo, 1, 0) ///< Whether or not to use column information 168 ///< in debug info. 169 170CODEGENOPT(DebugTypeExtRefs, 1, 0) ///< Whether or not debug info should contain 171 ///< external references to a PCH or module. 172 173CODEGENOPT(DebugExplicitImport, 1, 0) ///< Whether or not debug info should 174 ///< contain explicit imports for 175 ///< anonymous namespaces 176 177CODEGENOPT(EmitLLVMUseLists, 1, 0) ///< Control whether to serialize use-lists. 178 179/// The user specified number of registers to be used for integral arguments, 180/// or 0 if unspecified. 181VALUE_CODEGENOPT(NumRegisterParameters, 32, 0) 182 183/// The lower bound for a buffer to be considered for stack protection. 184VALUE_CODEGENOPT(SSPBufferSize, 32, 0) 185 186/// The kind of generated debug info. 187ENUM_CODEGENOPT(DebugInfo, DebugInfoKind, 3, NoDebugInfo) 188 189/// Tune the debug info for this debugger. 190ENUM_CODEGENOPT(DebuggerTuning, DebuggerKind, 2, DebuggerKindDefault) 191 192/// Dwarf version. Version zero indicates to LLVM that no DWARF should be 193/// emitted. 194VALUE_CODEGENOPT(DwarfVersion, 3, 0) 195 196/// Whether we should emit CodeView debug information. It's possible to emit 197/// CodeView and DWARF into the same object. 198CODEGENOPT(EmitCodeView, 1, 0) 199 200/// The kind of inlining to perform. 201ENUM_CODEGENOPT(Inlining, InliningMethod, 2, NoInlining) 202 203// Vector functions library to use. 204ENUM_CODEGENOPT(VecLib, VectorLibrary, 1, NoLibrary) 205 206/// The default TLS model to use. 207ENUM_CODEGENOPT(DefaultTLSModel, TLSModel, 2, GeneralDynamicTLSModel) 208 209#undef CODEGENOPT 210#undef ENUM_CODEGENOPT 211#undef VALUE_CODEGENOPT 212 213