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(RelaxELFRelocations, 1, 0) ///< -Wa,--mrelax-relocations 34CODEGENOPT(AsmVerbose , 1, 0) ///< -dA, -fverbose-asm. 35CODEGENOPT(AssumeSaneOperatorNew , 1, 1) ///< implicit __attribute__((malloc)) operator new 36CODEGENOPT(Autolink , 1, 1) ///< -fno-autolink 37CODEGENOPT(ObjCAutoRefCountExceptions , 1, 0) ///< Whether ARC should be EH-safe. 38CODEGENOPT(Backchain , 1, 0) ///< -mbackchain 39CODEGENOPT(CoverageExtraChecksum, 1, 0) ///< Whether we need a second checksum for functions in GCNO files. 40CODEGENOPT(CoverageNoFunctionNamesInData, 1, 0) ///< Do not include function names in GCDA files. 41CODEGENOPT(CoverageExitBlockBeforeBody, 1, 0) ///< Whether to emit the exit block before the body blocks in GCNO files. 42CODEGENOPT(CXAAtExit , 1, 1) ///< Use __cxa_atexit for calling destructors. 43CODEGENOPT(CXXCtorDtorAliases, 1, 0) ///< Emit complete ctors/dtors as linker 44 ///< aliases to base ctors when possible. 45CODEGENOPT(DataSections , 1, 0) ///< Set when -fdata-sections is enabled. 46CODEGENOPT(UniqueSectionNames, 1, 1) ///< Set for -funique-section-names. 47CODEGENOPT(DisableFPElim , 1, 0) ///< Set when -fomit-frame-pointer is enabled. 48CODEGENOPT(DisableFree , 1, 0) ///< Don't free memory. 49CODEGENOPT(DiscardValueNames , 1, 0) ///< Discard Value Names from the IR (LLVMContext flag) 50CODEGENOPT(DisableGCov , 1, 0) ///< Don't run the GCov pass, for testing. 51CODEGENOPT(DisableLLVMOpts , 1, 0) ///< Don't run any optimizations, for use in 52 ///< getting .bc files that correspond to the 53 ///< internal state before optimizations are 54 ///< done. 55CODEGENOPT(DisableLLVMPasses , 1, 0) ///< Don't run any LLVM IR passes to get 56 ///< the pristine IR generated by the 57 ///< frontend. 58CODEGENOPT(DisableRedZone , 1, 0) ///< Set when -mno-red-zone is enabled. 59CODEGENOPT(DisableTailCalls , 1, 0) ///< Do not emit tail calls. 60CODEGENOPT(EmitDeclMetadata , 1, 0) ///< Emit special metadata indicating what 61 ///< Decl* various IR entities came from. 62 ///< Only useful when running CodeGen as a 63 ///< subroutine. 64CODEGENOPT(EmitGcovArcs , 1, 0) ///< Emit coverage data files, aka. GCDA. 65CODEGENOPT(EmitGcovNotes , 1, 0) ///< Emit coverage "notes" files, aka GCNO. 66CODEGENOPT(EmitOpenCLArgMetadata , 1, 0) ///< Emit OpenCL kernel arg metadata. 67CODEGENOPT(EmulatedTLS , 1, 0) ///< Set when -femulated-tls is enabled. 68/// \brief FP_CONTRACT mode (on/off/fast). 69ENUM_CODEGENOPT(FPContractMode, FPContractModeKind, 2, FPC_On) 70/// \brief Embed Bitcode mode (off/all/bitcode/marker). 71ENUM_CODEGENOPT(EmbedBitcode, EmbedBitcodeKind, 2, Embed_Off) 72CODEGENOPT(ForbidGuardVariables , 1, 0) ///< Issue errors if C++ guard variables 73 ///< are required. 74CODEGENOPT(FunctionSections , 1, 0) ///< Set when -ffunction-sections is enabled. 75CODEGENOPT(InstrumentFunctions , 1, 0) ///< Set when -finstrument-functions is 76 ///< enabled. 77 78CODEGENOPT(XRayInstrumentFunctions , 1, 0) ///< Set when -fxray-instrument is 79 ///< enabled. 80 81///< Set the minimum number of instructions in a function to determine selective 82///< XRay instrumentation. 83VALUE_CODEGENOPT(XRayInstructionThreshold , 32, 200) 84 85CODEGENOPT(InstrumentForProfiling , 1, 0) ///< Set when -pg is enabled. 86CODEGENOPT(LessPreciseFPMAD , 1, 0) ///< Enable less precise MAD instructions to 87 ///< be generated. 88CODEGENOPT(PrepareForLTO , 1, 0) ///< Set when -flto is enabled on the 89 ///< compile step. 90CODEGENOPT(EmitSummaryIndex, 1, 0) ///< Set when -flto=thin is enabled on the 91 ///< compile step. 92CODEGENOPT(IncrementalLinkerCompatible, 1, 0) ///< Emit an object file which can 93 ///< be used with an incremental 94 ///< linker. 95CODEGENOPT(MergeAllConstants , 1, 1) ///< Merge identical constants. 96CODEGENOPT(MergeFunctions , 1, 0) ///< Set when -fmerge-functions is enabled. 97CODEGENOPT(MSVolatile , 1, 0) ///< Set when /volatile:ms is enabled. 98CODEGENOPT(NoCommon , 1, 0) ///< Set when -fno-common or C++ is enabled. 99CODEGENOPT(NoDwarfDirectoryAsm , 1, 0) ///< Set when -fno-dwarf-directory-asm is 100 ///< enabled. 101CODEGENOPT(NoExecStack , 1, 0) ///< Set when -Wa,--noexecstack is enabled. 102CODEGENOPT(FatalWarnings , 1, 0) ///< Set when -Wa,--fatal-warnings is 103 ///< enabled. 104CODEGENOPT(EnableSegmentedStacks , 1, 0) ///< Set when -fsplit-stack is enabled. 105CODEGENOPT(NoImplicitFloat , 1, 0) ///< Set when -mno-implicit-float is enabled. 106CODEGENOPT(NoInfsFPMath , 1, 0) ///< Assume FP arguments, results not +-Inf. 107CODEGENOPT(NoSignedZeros , 1, 0) ///< Allow ignoring the signedness of FP zero 108CODEGENOPT(ReciprocalMath , 1, 0) ///< Allow FP divisions to be reassociated. 109CODEGENOPT(NoInline , 1, 0) ///< Set when -fno-inline is enabled. 110 ///< Disables use of the inline keyword. 111CODEGENOPT(NoNaNsFPMath , 1, 0) ///< Assume FP arguments, results not NaN. 112CODEGENOPT(NoZeroInitializedInBSS , 1, 0) ///< -fno-zero-initialized-in-bss. 113/// \brief Method of Objective-C dispatch to use. 114ENUM_CODEGENOPT(ObjCDispatchMethod, ObjCDispatchMethodKind, 2, Legacy) 115CODEGENOPT(OmitLeafFramePointer , 1, 0) ///< Set when -momit-leaf-frame-pointer is 116 ///< enabled. 117VALUE_CODEGENOPT(OptimizationLevel, 2, 0) ///< The -O[0-3] option specified. 118VALUE_CODEGENOPT(OptimizeSize, 2, 0) ///< If -Os (==1) or -Oz (==2) is specified. 119 120/// \brief Choose profile instrumenation kind or no instrumentation. 121ENUM_CODEGENOPT(ProfileInstr, ProfileInstrKind, 2, ProfileNone) 122/// \brief Choose profile kind for PGO use compilation. 123ENUM_CODEGENOPT(ProfileUse, ProfileInstrKind, 2, ProfileNone) 124CODEGENOPT(CoverageMapping , 1, 0) ///< Generate coverage mapping regions to 125 ///< enable code coverage analysis. 126CODEGENOPT(DumpCoverageMapping , 1, 0) ///< Dump the generated coverage mapping 127 ///< regions. 128 129 /// If -fpcc-struct-return or -freg-struct-return is specified. 130ENUM_CODEGENOPT(StructReturnConvention, StructReturnConventionKind, 2, SRCK_Default) 131 132CODEGENOPT(RelaxAll , 1, 0) ///< Relax all machine code instructions. 133CODEGENOPT(RelaxedAliasing , 1, 0) ///< Set when -fno-strict-aliasing is enabled. 134CODEGENOPT(StructPathTBAA , 1, 0) ///< Whether or not to use struct-path TBAA. 135CODEGENOPT(SaveTempLabels , 1, 0) ///< Save temporary labels. 136CODEGENOPT(SanitizeAddressUseAfterScope , 1, 0) ///< Enable use-after-scope detection 137 ///< in AddressSanitizer 138CODEGENOPT(SanitizeMemoryTrackOrigins, 2, 0) ///< Enable tracking origins in 139 ///< MemorySanitizer 140CODEGENOPT(SanitizeMemoryUseAfterDtor, 1, 0) ///< Enable use-after-delete detection 141 ///< in MemorySanitizer 142CODEGENOPT(SanitizeCfiCrossDso, 1, 0) ///< Enable cross-dso support in CFI. 143CODEGENOPT(SanitizeCoverageType, 2, 0) ///< Type of sanitizer coverage 144 ///< instrumentation. 145CODEGENOPT(SanitizeCoverageIndirectCalls, 1, 0) ///< Enable sanitizer coverage 146 ///< for indirect calls. 147CODEGENOPT(SanitizeCoverageTraceBB, 1, 0) ///< Enable basic block tracing in 148 ///< in sanitizer coverage. 149CODEGENOPT(SanitizeCoverageTraceCmp, 1, 0) ///< Enable cmp instruction tracing 150 ///< in sanitizer coverage. 151CODEGENOPT(SanitizeCoverage8bitCounters, 1, 0) ///< Use 8-bit frequency counters 152 ///< in sanitizer coverage. 153CODEGENOPT(SanitizeCoverageTracePC, 1, 0) ///< Enable PC tracing 154 ///< in sanitizer coverage. 155CODEGENOPT(SanitizeStats , 1, 0) ///< Collect statistics for sanitizers. 156CODEGENOPT(SimplifyLibCalls , 1, 1) ///< Set when -fbuiltin is enabled. 157CODEGENOPT(SoftFloat , 1, 0) ///< -soft-float. 158CODEGENOPT(StrictEnums , 1, 0) ///< Optimize based on strict enum definition. 159CODEGENOPT(StrictVTablePointers, 1, 0) ///< Optimize based on the strict vtable pointers 160CODEGENOPT(TimePasses , 1, 0) ///< Set when -ftime-report is enabled. 161CODEGENOPT(UnrollLoops , 1, 0) ///< Control whether loops are unrolled. 162CODEGENOPT(RerollLoops , 1, 0) ///< Control whether loops are rerolled. 163CODEGENOPT(NoUseJumpTables , 1, 0) ///< Set when -fno-jump-tables is enabled. 164CODEGENOPT(UnsafeFPMath , 1, 0) ///< Allow unsafe floating point optzns. 165CODEGENOPT(UnwindTables , 1, 0) ///< Emit unwind tables. 166CODEGENOPT(VectorizeBB , 1, 0) ///< Run basic block vectorizer. 167CODEGENOPT(VectorizeLoop , 1, 0) ///< Run loop vectorizer. 168CODEGENOPT(VectorizeSLP , 1, 0) ///< Run SLP vectorizer. 169 170 /// Attempt to use register sized accesses to bit-fields in structures, when 171 /// possible. 172CODEGENOPT(UseRegisterSizedBitfieldAccess , 1, 0) 173 174CODEGENOPT(VerifyModule , 1, 1) ///< Control whether the module should be run 175 ///< through the LLVM Verifier. 176 177CODEGENOPT(StackRealignment , 1, 0) ///< Control whether to force stack 178 ///< realignment. 179CODEGENOPT(UseInitArray , 1, 0) ///< Control whether to use .init_array or 180 ///< .ctors. 181VALUE_CODEGENOPT(StackAlignment , 32, 0) ///< Overrides default stack 182 ///< alignment, if not 0. 183VALUE_CODEGENOPT(StackProbeSize , 32, 4096) ///< Overrides default stack 184 ///< probe size, even if 0. 185CODEGENOPT(DebugColumnInfo, 1, 0) ///< Whether or not to use column information 186 ///< in debug info. 187 188CODEGENOPT(DebugTypeExtRefs, 1, 0) ///< Whether or not debug info should contain 189 ///< external references to a PCH or module. 190 191CODEGENOPT(DebugExplicitImport, 1, 0) ///< Whether or not debug info should 192 ///< contain explicit imports for 193 ///< anonymous namespaces 194 195CODEGENOPT(EmitLLVMUseLists, 1, 0) ///< Control whether to serialize use-lists. 196 197CODEGENOPT(WholeProgramVTables, 1, 0) ///< Whether to apply whole-program 198 /// vtable optimization. 199 200/// Whether to use public LTO visibility for entities in std and stdext 201/// namespaces. This is enabled by clang-cl's /MT and /MTd flags. 202CODEGENOPT(LTOVisibilityPublicStd, 1, 0) 203 204/// The user specified number of registers to be used for integral arguments, 205/// or 0 if unspecified. 206VALUE_CODEGENOPT(NumRegisterParameters, 32, 0) 207 208/// The lower bound for a buffer to be considered for stack protection. 209VALUE_CODEGENOPT(SSPBufferSize, 32, 0) 210 211/// The kind of generated debug info. 212ENUM_CODEGENOPT(DebugInfo, codegenoptions::DebugInfoKind, 3, codegenoptions::NoDebugInfo) 213 214/// Tune the debug info for this debugger. 215ENUM_CODEGENOPT(DebuggerTuning, llvm::DebuggerKind, 2, 216 llvm::DebuggerKind::Default) 217 218/// Dwarf version. Version zero indicates to LLVM that no DWARF should be 219/// emitted. 220VALUE_CODEGENOPT(DwarfVersion, 3, 0) 221 222/// Whether we should emit CodeView debug information. It's possible to emit 223/// CodeView and DWARF into the same object. 224CODEGENOPT(EmitCodeView, 1, 0) 225 226/// The kind of inlining to perform. 227ENUM_CODEGENOPT(Inlining, InliningMethod, 2, NoInlining) 228 229// Vector functions library to use. 230ENUM_CODEGENOPT(VecLib, VectorLibrary, 1, NoLibrary) 231 232/// The default TLS model to use. 233ENUM_CODEGENOPT(DefaultTLSModel, TLSModel, 2, GeneralDynamicTLSModel) 234 235/// Number of path components to strip when emitting checks. (0 == full 236/// filename) 237VALUE_CODEGENOPT(EmitCheckPathComponentsToStrip, 32, 0) 238 239#undef CODEGENOPT 240#undef ENUM_CODEGENOPT 241#undef VALUE_CODEGENOPT 242 243