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 32ENUM_CODEGENOPT(CompressDebugSections, llvm::DebugCompressionType, 2, 33 llvm::DebugCompressionType::None) 34CODEGENOPT(RelaxELFRelocations, 1, 0) ///< -Wa,--mrelax-relocations 35CODEGENOPT(AsmVerbose , 1, 0) ///< -dA, -fverbose-asm. 36CODEGENOPT(PreserveAsmComments, 1, 1) ///< -dA, -fno-preserve-as-comments. 37CODEGENOPT(AssumeSaneOperatorNew , 1, 1) ///< implicit __attribute__((malloc)) operator new 38CODEGENOPT(Autolink , 1, 1) ///< -fno-autolink 39CODEGENOPT(ObjCAutoRefCountExceptions , 1, 0) ///< Whether ARC should be EH-safe. 40CODEGENOPT(Backchain , 1, 0) ///< -mbackchain 41CODEGENOPT(ControlFlowGuard , 1, 0) ///< -cfguard 42CODEGENOPT(CoverageExtraChecksum, 1, 0) ///< Whether we need a second checksum for functions in GCNO files. 43CODEGENOPT(CoverageNoFunctionNamesInData, 1, 0) ///< Do not include function names in GCDA files. 44CODEGENOPT(CoverageExitBlockBeforeBody, 1, 0) ///< Whether to emit the exit block before the body blocks in GCNO files. 45CODEGENOPT(CXAAtExit , 1, 1) ///< Use __cxa_atexit for calling destructors. 46CODEGENOPT(RegisterGlobalDtorsWithAtExit, 1, 1) ///< Use atexit or __cxa_atexit to register global destructors. 47CODEGENOPT(CXXCtorDtorAliases, 1, 0) ///< Emit complete ctors/dtors as linker 48 ///< aliases to base ctors when possible. 49CODEGENOPT(DataSections , 1, 0) ///< Set when -fdata-sections is enabled. 50CODEGENOPT(UniqueSectionNames, 1, 1) ///< Set for -funique-section-names. 51CODEGENOPT(DisableFPElim , 1, 0) ///< Set when -fomit-frame-pointer is enabled. 52CODEGENOPT(DisableFree , 1, 0) ///< Don't free memory. 53CODEGENOPT(DiscardValueNames , 1, 0) ///< Discard Value Names from the IR (LLVMContext flag) 54CODEGENOPT(DisableGCov , 1, 0) ///< Don't run the GCov pass, for testing. 55CODEGENOPT(DisableLLVMPasses , 1, 0) ///< Don't run any LLVM IR passes to get 56 ///< the pristine IR generated by the 57 ///< frontend. 58CODEGENOPT(DisableLifetimeMarkers, 1, 0) ///< Don't emit any lifetime markers 59CODEGENOPT(DisableO0ImplyOptNone , 1, 0) ///< Don't annonate function with optnone at O0 60CODEGENOPT(ExperimentalNewPassManager, 1, 0) ///< Enables the new, experimental 61 ///< pass manager. 62CODEGENOPT(DebugPassManager, 1, 0) ///< Prints debug information for the new 63 ///< pass manager. 64CODEGENOPT(DisableRedZone , 1, 0) ///< Set when -mno-red-zone is enabled. 65CODEGENOPT(IndirectTlsSegRefs, 1, 0) ///< Set when -mno-tls-direct-seg-refs 66 ///< is specified. 67CODEGENOPT(DisableTailCalls , 1, 0) ///< Do not emit tail calls. 68CODEGENOPT(NoEscapingBlockTailCalls, 1, 0) ///< Do not emit tail calls from 69 ///< escaping blocks. 70CODEGENOPT(EmitDeclMetadata , 1, 0) ///< Emit special metadata indicating what 71 ///< Decl* various IR entities came from. 72 ///< Only useful when running CodeGen as a 73 ///< subroutine. 74CODEGENOPT(EmitVersionIdentMetadata , 1, 1) ///< Emit compiler version metadata. 75CODEGENOPT(EmitGcovArcs , 1, 0) ///< Emit coverage data files, aka. GCDA. 76CODEGENOPT(EmitGcovNotes , 1, 0) ///< Emit coverage "notes" files, aka GCNO. 77CODEGENOPT(EmitOpenCLArgMetadata , 1, 0) ///< Emit OpenCL kernel arg metadata. 78CODEGENOPT(EmulatedTLS , 1, 0) ///< Set by default or -f[no-]emulated-tls. 79CODEGENOPT(ExplicitEmulatedTLS , 1, 0) ///< Set if -f[no-]emulated-tls is used. 80/// Embed Bitcode mode (off/all/bitcode/marker). 81ENUM_CODEGENOPT(EmbedBitcode, EmbedBitcodeKind, 2, Embed_Off) 82CODEGENOPT(ForbidGuardVariables , 1, 0) ///< Issue errors if C++ guard variables 83 ///< are required. 84CODEGENOPT(FunctionSections , 1, 0) ///< Set when -ffunction-sections is enabled. 85CODEGENOPT(InstrumentFunctions , 1, 0) ///< Set when -finstrument-functions is 86 ///< enabled. 87CODEGENOPT(InstrumentFunctionsAfterInlining , 1, 0) ///< Set when 88 ///< -finstrument-functions-after-inlining is enabled. 89CODEGENOPT(InstrumentFunctionEntryBare , 1, 0) ///< Set when 90 ///< -finstrument-function-entry-bare is enabled. 91CODEGENOPT(CFProtectionReturn , 1, 0) ///< if -fcf-protection is 92 ///< set to full or return. 93CODEGENOPT(CFProtectionBranch , 1, 0) ///< if -fcf-protection is 94 ///< set to full or branch. 95CODEGENOPT(XRayInstrumentFunctions , 1, 0) ///< Set when -fxray-instrument is 96 ///< enabled. 97CODEGENOPT(StackSizeSection , 1, 0) ///< Set when -fstack-size-section is enabled. 98 99///< Set when -fxray-always-emit-customevents is enabled. 100CODEGENOPT(XRayAlwaysEmitCustomEvents , 1, 0) 101 102///< Set when -fxray-always-emit-typedevents is enabled. 103CODEGENOPT(XRayAlwaysEmitTypedEvents , 1, 0) 104 105///< Set the minimum number of instructions in a function to determine selective 106///< XRay instrumentation. 107VALUE_CODEGENOPT(XRayInstructionThreshold , 32, 200) 108 109CODEGENOPT(InstrumentForProfiling , 1, 0) ///< Set when -pg is enabled. 110CODEGENOPT(CallFEntry , 1, 0) ///< Set when -mfentry is enabled. 111CODEGENOPT(LessPreciseFPMAD , 1, 0) ///< Enable less precise MAD instructions to 112 ///< be generated. 113CODEGENOPT(PrepareForLTO , 1, 0) ///< Set when -flto is enabled on the 114 ///< compile step. 115CODEGENOPT(PrepareForThinLTO , 1, 0) ///< Set when -flto=thin is enabled on the 116 ///< compile step. 117CODEGENOPT(LTOUnit, 1, 0) ///< Emit IR to support LTO unit features (CFI, whole 118 ///< program vtable opt). 119CODEGENOPT(EnableSplitLTOUnit, 1, 0) ///< Enable LTO unit splitting to support 120 /// CFI and traditional whole program 121 /// devirtualization that require whole 122 /// program IR support. 123CODEGENOPT(IncrementalLinkerCompatible, 1, 0) ///< Emit an object file which can 124 ///< be used with an incremental 125 ///< linker. 126CODEGENOPT(MergeAllConstants , 1, 1) ///< Merge identical constants. 127CODEGENOPT(MergeFunctions , 1, 0) ///< Set when -fmerge-functions is enabled. 128CODEGENOPT(MSVolatile , 1, 0) ///< Set when /volatile:ms is enabled. 129CODEGENOPT(NoCommon , 1, 0) ///< Set when -fno-common or C++ is enabled. 130CODEGENOPT(NoDwarfDirectoryAsm , 1, 0) ///< Set when -fno-dwarf-directory-asm is 131 ///< enabled. 132CODEGENOPT(NoExecStack , 1, 0) ///< Set when -Wa,--noexecstack is enabled. 133CODEGENOPT(FatalWarnings , 1, 0) ///< Set when -Wa,--fatal-warnings is 134 ///< enabled. 135CODEGENOPT(EnableSegmentedStacks , 1, 0) ///< Set when -fsplit-stack is enabled. 136CODEGENOPT(NoImplicitFloat , 1, 0) ///< Set when -mno-implicit-float is enabled. 137CODEGENOPT(NoInfsFPMath , 1, 0) ///< Assume FP arguments, results not +-Inf. 138CODEGENOPT(NoSignedZeros , 1, 0) ///< Allow ignoring the signedness of FP zero 139CODEGENOPT(NullPointerIsValid , 1, 0) ///< Assume Null pointer deference is defined. 140CODEGENOPT(Reassociate , 1, 0) ///< Allow reassociation of FP math ops 141CODEGENOPT(ReciprocalMath , 1, 0) ///< Allow FP divisions to be reassociated. 142CODEGENOPT(NoTrappingMath , 1, 0) ///< Set when -fno-trapping-math is enabled. 143CODEGENOPT(NoNaNsFPMath , 1, 0) ///< Assume FP arguments, results not NaN. 144CODEGENOPT(FlushDenorm , 1, 0) ///< Allow FP denorm numbers to be flushed to zero 145CODEGENOPT(CorrectlyRoundedDivSqrt, 1, 0) ///< -cl-fp32-correctly-rounded-divide-sqrt 146 147/// When false, this attempts to generate code as if the result of an 148/// overflowing conversion matches the overflowing behavior of a target's native 149/// float-to-int conversion instructions. 150CODEGENOPT(StrictFloatCastOverflow, 1, 1) 151 152CODEGENOPT(UniformWGSize , 1, 0) ///< -cl-uniform-work-group-size 153CODEGENOPT(NoZeroInitializedInBSS , 1, 0) ///< -fno-zero-initialized-in-bss. 154/// Method of Objective-C dispatch to use. 155ENUM_CODEGENOPT(ObjCDispatchMethod, ObjCDispatchMethodKind, 2, Legacy) 156/// Replace certain message sends with calls to ObjC runtime entrypoints 157CODEGENOPT(ObjCConvertMessagesToRuntimeCalls , 1, 1) 158CODEGENOPT(OmitLeafFramePointer , 1, 0) ///< Set when -momit-leaf-frame-pointer is 159 ///< enabled. 160 161VALUE_CODEGENOPT(OptimizationLevel, 2, 0) ///< The -O[0-3] option specified. 162VALUE_CODEGENOPT(OptimizeSize, 2, 0) ///< If -Os (==1) or -Oz (==2) is specified. 163 164/// Choose profile instrumenation kind or no instrumentation. 165ENUM_CODEGENOPT(ProfileInstr, ProfileInstrKind, 2, ProfileNone) 166/// Choose profile kind for PGO use compilation. 167ENUM_CODEGENOPT(ProfileUse, ProfileInstrKind, 2, ProfileNone) 168CODEGENOPT(CoverageMapping , 1, 0) ///< Generate coverage mapping regions to 169 ///< enable code coverage analysis. 170CODEGENOPT(DumpCoverageMapping , 1, 0) ///< Dump the generated coverage mapping 171 ///< regions. 172 173 /// If -fpcc-struct-return or -freg-struct-return is specified. 174ENUM_CODEGENOPT(StructReturnConvention, StructReturnConventionKind, 2, SRCK_Default) 175 176CODEGENOPT(RelaxAll , 1, 0) ///< Relax all machine code instructions. 177CODEGENOPT(RelaxedAliasing , 1, 0) ///< Set when -fno-strict-aliasing is enabled. 178CODEGENOPT(StructPathTBAA , 1, 0) ///< Whether or not to use struct-path TBAA. 179CODEGENOPT(NewStructPathTBAA , 1, 0) ///< Whether or not to use enhanced struct-path TBAA. 180CODEGENOPT(SaveTempLabels , 1, 0) ///< Save temporary labels. 181CODEGENOPT(SanitizeAddressUseAfterScope , 1, 0) ///< Enable use-after-scope detection 182 ///< in AddressSanitizer 183CODEGENOPT(SanitizeAddressPoisonCustomArrayCookie, 1, 184 0) ///< Enable poisoning operator new[] which is not a replaceable 185 ///< global allocation function in AddressSanitizer 186CODEGENOPT(SanitizeAddressGlobalsDeadStripping, 1, 0) ///< Enable linker dead stripping 187 ///< of globals in AddressSanitizer 188CODEGENOPT(SanitizeAddressUseOdrIndicator, 1, 0) ///< Enable ODR indicator globals 189CODEGENOPT(SanitizeMemoryTrackOrigins, 2, 0) ///< Enable tracking origins in 190 ///< MemorySanitizer 191CODEGENOPT(SanitizeMemoryUseAfterDtor, 1, 0) ///< Enable use-after-delete detection 192 ///< in MemorySanitizer 193CODEGENOPT(SanitizeCfiCrossDso, 1, 0) ///< Enable cross-dso support in CFI. 194CODEGENOPT(SanitizeMinimalRuntime, 1, 0) ///< Use "_minimal" sanitizer runtime for 195 ///< diagnostics. 196CODEGENOPT(SanitizeCfiICallGeneralizePointers, 1, 0) ///< Generalize pointer types in 197 ///< CFI icall function signatures 198CODEGENOPT(SanitizeCoverageType, 2, 0) ///< Type of sanitizer coverage 199 ///< instrumentation. 200CODEGENOPT(SanitizeCoverageIndirectCalls, 1, 0) ///< Enable sanitizer coverage 201 ///< for indirect calls. 202CODEGENOPT(SanitizeCoverageTraceBB, 1, 0) ///< Enable basic block tracing in 203 ///< in sanitizer coverage. 204CODEGENOPT(SanitizeCoverageTraceCmp, 1, 0) ///< Enable cmp instruction tracing 205 ///< in sanitizer coverage. 206CODEGENOPT(SanitizeCoverageTraceDiv, 1, 0) ///< Enable div instruction tracing 207 ///< in sanitizer coverage. 208CODEGENOPT(SanitizeCoverageTraceGep, 1, 0) ///< Enable GEP instruction tracing 209 ///< in sanitizer coverage. 210CODEGENOPT(SanitizeCoverage8bitCounters, 1, 0) ///< Use 8-bit frequency counters 211 ///< in sanitizer coverage. 212CODEGENOPT(SanitizeCoverageTracePC, 1, 0) ///< Enable PC tracing 213 ///< in sanitizer coverage. 214CODEGENOPT(SanitizeCoverageTracePCGuard, 1, 0) ///< Enable PC tracing with guard 215 ///< in sanitizer coverage. 216CODEGENOPT(SanitizeCoverageInline8bitCounters, 1, 0) ///< Use inline 8bit counters. 217CODEGENOPT(SanitizeCoveragePCTable, 1, 0) ///< Create a PC Table. 218CODEGENOPT(SanitizeCoverageNoPrune, 1, 0) ///< Disable coverage pruning. 219CODEGENOPT(SanitizeCoverageStackDepth, 1, 0) ///< Enable max stack depth tracing 220CODEGENOPT(SanitizeStats , 1, 0) ///< Collect statistics for sanitizers. 221CODEGENOPT(SimplifyLibCalls , 1, 1) ///< Set when -fbuiltin is enabled. 222CODEGENOPT(SoftFloat , 1, 0) ///< -soft-float. 223CODEGENOPT(SpeculativeLoadHardening, 1, 0) ///< Enable speculative load hardening. 224CODEGENOPT(FineGrainedBitfieldAccesses, 1, 0) ///< Enable fine-grained bitfield accesses. 225CODEGENOPT(StrictEnums , 1, 0) ///< Optimize based on strict enum definition. 226CODEGENOPT(StrictVTablePointers, 1, 0) ///< Optimize based on the strict vtable pointers 227CODEGENOPT(TimePasses , 1, 0) ///< Set when -ftime-report is enabled. 228CODEGENOPT(UnrollLoops , 1, 0) ///< Control whether loops are unrolled. 229CODEGENOPT(RerollLoops , 1, 0) ///< Control whether loops are rerolled. 230CODEGENOPT(NoUseJumpTables , 1, 0) ///< Set when -fno-jump-tables is enabled. 231CODEGENOPT(UnsafeFPMath , 1, 0) ///< Allow unsafe floating point optzns. 232CODEGENOPT(UnwindTables , 1, 0) ///< Emit unwind tables. 233CODEGENOPT(VectorizeLoop , 1, 0) ///< Run loop vectorizer. 234CODEGENOPT(VectorizeSLP , 1, 0) ///< Run SLP vectorizer. 235CODEGENOPT(ProfileSampleAccurate, 1, 0) ///< Sample profile is accurate. 236 237 /// Attempt to use register sized accesses to bit-fields in structures, when 238 /// possible. 239CODEGENOPT(UseRegisterSizedBitfieldAccess , 1, 0) 240 241CODEGENOPT(VerifyModule , 1, 1) ///< Control whether the module should be run 242 ///< through the LLVM Verifier. 243 244CODEGENOPT(StackRealignment , 1, 0) ///< Control whether to force stack 245 ///< realignment. 246CODEGENOPT(UseInitArray , 1, 0) ///< Control whether to use .init_array or 247 ///< .ctors. 248VALUE_CODEGENOPT(StackAlignment , 32, 0) ///< Overrides default stack 249 ///< alignment, if not 0. 250VALUE_CODEGENOPT(StackProbeSize , 32, 4096) ///< Overrides default stack 251 ///< probe size, even if 0. 252CODEGENOPT(NoStackArgProbe, 1, 0) ///< Set when -mno-stack-arg-probe is used 253CODEGENOPT(DebugColumnInfo, 1, 0) ///< Whether or not to use column information 254 ///< in debug info. 255 256CODEGENOPT(DebugTypeExtRefs, 1, 0) ///< Whether or not debug info should contain 257 ///< external references to a PCH or module. 258 259CODEGENOPT(DebugExplicitImport, 1, 0) ///< Whether or not debug info should 260 ///< contain explicit imports for 261 ///< anonymous namespaces 262 263ENUM_CODEGENOPT(SplitDwarfMode, DwarfFissionKind, 2, NoFission) ///< DWARF fission mode to use. 264 265CODEGENOPT(SplitDwarfInlining, 1, 1) ///< Whether to include inlining info in the 266 ///< skeleton CU to allow for symbolication 267 ///< of inline stack frames without .dwo files. 268CODEGENOPT(DebugFwdTemplateParams, 1, 0) ///< Whether to emit complete 269 ///< template parameter descriptions in 270 ///< forward declarations (versus just 271 ///< including them in the name). 272 273CODEGENOPT(EmitLLVMUseLists, 1, 0) ///< Control whether to serialize use-lists. 274 275CODEGENOPT(WholeProgramVTables, 1, 0) ///< Whether to apply whole-program 276 /// vtable optimization. 277 278/// Whether to use public LTO visibility for entities in std and stdext 279/// namespaces. This is enabled by clang-cl's /MT and /MTd flags. 280CODEGENOPT(LTOVisibilityPublicStd, 1, 0) 281 282/// The user specified number of registers to be used for integral arguments, 283/// or 0 if unspecified. 284VALUE_CODEGENOPT(NumRegisterParameters, 32, 0) 285 286/// The lower bound for a buffer to be considered for stack protection. 287VALUE_CODEGENOPT(SSPBufferSize, 32, 0) 288 289/// The kind of generated debug info. 290ENUM_CODEGENOPT(DebugInfo, codegenoptions::DebugInfoKind, 3, codegenoptions::NoDebugInfo) 291 292/// Whether to generate macro debug info. 293CODEGENOPT(MacroDebugInfo, 1, 0) 294 295/// Tune the debug info for this debugger. 296ENUM_CODEGENOPT(DebuggerTuning, llvm::DebuggerKind, 2, 297 llvm::DebuggerKind::Default) 298 299/// Dwarf version. Version zero indicates to LLVM that no DWARF should be 300/// emitted. 301VALUE_CODEGENOPT(DwarfVersion, 3, 0) 302 303/// Whether we should emit CodeView debug information. It's possible to emit 304/// CodeView and DWARF into the same object. 305CODEGENOPT(EmitCodeView, 1, 0) 306 307/// Whether to emit the .debug$H section containing hashes of CodeView types. 308CODEGENOPT(CodeViewGHash, 1, 0) 309 310/// The kind of inlining to perform. 311ENUM_CODEGENOPT(Inlining, InliningMethod, 2, NormalInlining) 312 313// Vector functions library to use. 314ENUM_CODEGENOPT(VecLib, VectorLibrary, 2, NoLibrary) 315 316/// The default TLS model to use. 317ENUM_CODEGENOPT(DefaultTLSModel, TLSModel, 2, GeneralDynamicTLSModel) 318 319/// Number of path components to strip when emitting checks. (0 == full 320/// filename) 321VALUE_CODEGENOPT(EmitCheckPathComponentsToStrip, 32, 0) 322 323/// Whether to report the hotness of the code region for optimization remarks. 324CODEGENOPT(DiagnosticsWithHotness, 1, 0) 325 326/// The minimum hotness value a diagnostic needs in order to be included in 327/// optimization diagnostics. 328VALUE_CODEGENOPT(DiagnosticsHotnessThreshold, 32, 0) 329 330/// Whether copy relocations support is available when building as PIE. 331CODEGENOPT(PIECopyRelocations, 1, 0) 332 333/// Whether we should use the undefined behaviour optimization for control flow 334/// paths that reach the end of a function without executing a required return. 335CODEGENOPT(StrictReturn, 1, 1) 336 337/// Whether emit extra debug info for sample pgo profile collection. 338CODEGENOPT(DebugInfoForProfiling, 1, 0) 339 340/// Whether 3-component vector type is preserved. 341CODEGENOPT(PreserveVec3Type, 1, 0) 342 343/// Whether to emit .debug_gnu_pubnames section instead of .debug_pubnames. 344CODEGENOPT(DebugNameTable, 2, 0) 345 346/// Whether to use DWARF base address specifiers in .debug_ranges. 347CODEGENOPT(DebugRangesBaseAddress, 1, 0) 348 349CODEGENOPT(NoPLT, 1, 0) 350 351/// Whether to embed source in DWARF debug line section. 352CODEGENOPT(EmbedSource, 1, 0) 353 354/// Whether to emit all vtables 355CODEGENOPT(ForceEmitVTables, 1, 0) 356 357/// Whether to emit an address-significance table into the object file. 358CODEGENOPT(Addrsig, 1, 0) 359 360ENUM_CODEGENOPT(SignReturnAddress, SignReturnAddressScope, 2, None) 361ENUM_CODEGENOPT(SignReturnAddressKey, SignReturnAddressKeyValue, 1, AKey) 362CODEGENOPT(BranchTargetEnforcement, 1, 0) 363 364/// Whether to emit unused static constants. 365CODEGENOPT(KeepStaticConsts, 1, 0) 366 367#undef CODEGENOPT 368#undef ENUM_CODEGENOPT 369#undef VALUE_CODEGENOPT 370 371