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) \ 23 CODEGENOPT(Name, Bits, Default) 24 #endif 25 26 #ifndef ENUM_CODEGENOPT 27 # define ENUM_CODEGENOPT(Name, Type, Bits, Default) \ 28 CODEGENOPT(Name, Bits, Default) 29 #endif 30 31 CODEGENOPT(DisableIntegratedAS, 1, 0) ///< -no-integrated-as 32 ENUM_CODEGENOPT(CompressDebugSections, llvm::DebugCompressionType, 2, 33 llvm::DebugCompressionType::None) 34 CODEGENOPT(RelaxELFRelocations, 1, 0) ///< -Wa,--mrelax-relocations 35 CODEGENOPT(AsmVerbose , 1, 0) ///< -dA, -fverbose-asm. 36 CODEGENOPT(PreserveAsmComments, 1, 1) ///< -dA, -fno-preserve-as-comments. 37 CODEGENOPT(AssumeSaneOperatorNew , 1, 1) ///< implicit __attribute__((malloc)) operator new 38 CODEGENOPT(Autolink , 1, 1) ///< -fno-autolink 39 CODEGENOPT(ObjCAutoRefCountExceptions , 1, 0) ///< Whether ARC should be EH-safe. 40 CODEGENOPT(Backchain , 1, 0) ///< -mbackchain 41 CODEGENOPT(CoverageExtraChecksum, 1, 0) ///< Whether we need a second checksum for functions in GCNO files. 42 CODEGENOPT(CoverageNoFunctionNamesInData, 1, 0) ///< Do not include function names in GCDA files. 43 CODEGENOPT(CoverageExitBlockBeforeBody, 1, 0) ///< Whether to emit the exit block before the body blocks in GCNO files. 44 CODEGENOPT(CXAAtExit , 1, 1) ///< Use __cxa_atexit for calling destructors. 45 CODEGENOPT(CXXCtorDtorAliases, 1, 0) ///< Emit complete ctors/dtors as linker 46 ///< aliases to base ctors when possible. 47 CODEGENOPT(DataSections , 1, 0) ///< Set when -fdata-sections is enabled. 48 CODEGENOPT(UniqueSectionNames, 1, 1) ///< Set for -funique-section-names. 49 CODEGENOPT(DisableFPElim , 1, 0) ///< Set when -fomit-frame-pointer is enabled. 50 CODEGENOPT(DisableFree , 1, 0) ///< Don't free memory. 51 CODEGENOPT(DiscardValueNames , 1, 0) ///< Discard Value Names from the IR (LLVMContext flag) 52 CODEGENOPT(DisableGCov , 1, 0) ///< Don't run the GCov pass, for testing. 53 CODEGENOPT(DisableLLVMPasses , 1, 0) ///< Don't run any LLVM IR passes to get 54 ///< the pristine IR generated by the 55 ///< frontend. 56 CODEGENOPT(DisableLifetimeMarkers, 1, 0) ///< Don't emit any lifetime markers 57 CODEGENOPT(DisableO0ImplyOptNone , 1, 0) ///< Don't annonate function with optnone at O0 58 CODEGENOPT(ExperimentalNewPassManager, 1, 0) ///< Enables the new, experimental 59 ///< pass manager. 60 CODEGENOPT(DisableRedZone , 1, 0) ///< Set when -mno-red-zone is enabled. 61 CODEGENOPT(DisableTailCalls , 1, 0) ///< Do not emit tail calls. 62 CODEGENOPT(EmitDeclMetadata , 1, 0) ///< Emit special metadata indicating what 63 ///< Decl* various IR entities came from. 64 ///< Only useful when running CodeGen as a 65 ///< subroutine. 66 CODEGENOPT(EmitGcovArcs , 1, 0) ///< Emit coverage data files, aka. GCDA. 67 CODEGENOPT(EmitGcovNotes , 1, 0) ///< Emit coverage "notes" files, aka GCNO. 68 CODEGENOPT(EmitOpenCLArgMetadata , 1, 0) ///< Emit OpenCL kernel arg metadata. 69 CODEGENOPT(EmulatedTLS , 1, 0) ///< Set when -femulated-tls is enabled. 70 /// \brief Embed Bitcode mode (off/all/bitcode/marker). 71 ENUM_CODEGENOPT(EmbedBitcode, EmbedBitcodeKind, 2, Embed_Off) 72 CODEGENOPT(ForbidGuardVariables , 1, 0) ///< Issue errors if C++ guard variables 73 ///< are required. 74 CODEGENOPT(FunctionSections , 1, 0) ///< Set when -ffunction-sections is enabled. 75 CODEGENOPT(InstrumentFunctions , 1, 0) ///< Set when -finstrument-functions is 76 ///< enabled. 77 78 CODEGENOPT(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. 83 VALUE_CODEGENOPT(XRayInstructionThreshold , 32, 200) 84 85 CODEGENOPT(InstrumentForProfiling , 1, 0) ///< Set when -pg is enabled. 86 CODEGENOPT(CallFEntry , 1, 0) ///< Set when -mfentry is enabled. 87 CODEGENOPT(LessPreciseFPMAD , 1, 0) ///< Enable less precise MAD instructions to 88 ///< be generated. 89 CODEGENOPT(PrepareForLTO , 1, 0) ///< Set when -flto is enabled on the 90 ///< compile step. 91 CODEGENOPT(EmitSummaryIndex, 1, 0) ///< Set when -flto=thin is enabled on the 92 ///< compile step. 93 CODEGENOPT(LTOUnit, 1, 0) ///< Emit IR to support LTO unit features (CFI, whole 94 ///< program vtable opt). 95 CODEGENOPT(IncrementalLinkerCompatible, 1, 0) ///< Emit an object file which can 96 ///< be used with an incremental 97 ///< linker. 98 CODEGENOPT(MergeAllConstants , 1, 1) ///< Merge identical constants. 99 CODEGENOPT(MergeFunctions , 1, 0) ///< Set when -fmerge-functions is enabled. 100 CODEGENOPT(MSVolatile , 1, 0) ///< Set when /volatile:ms is enabled. 101 CODEGENOPT(NoCommon , 1, 0) ///< Set when -fno-common or C++ is enabled. 102 CODEGENOPT(NoDwarfDirectoryAsm , 1, 0) ///< Set when -fno-dwarf-directory-asm is 103 ///< enabled. 104 CODEGENOPT(NoExecStack , 1, 0) ///< Set when -Wa,--noexecstack is enabled. 105 CODEGENOPT(FatalWarnings , 1, 0) ///< Set when -Wa,--fatal-warnings is 106 ///< enabled. 107 CODEGENOPT(EnableSegmentedStacks , 1, 0) ///< Set when -fsplit-stack is enabled. 108 CODEGENOPT(NoImplicitFloat , 1, 0) ///< Set when -mno-implicit-float is enabled. 109 CODEGENOPT(NoInfsFPMath , 1, 0) ///< Assume FP arguments, results not +-Inf. 110 CODEGENOPT(NoSignedZeros , 1, 0) ///< Allow ignoring the signedness of FP zero 111 CODEGENOPT(ReciprocalMath , 1, 0) ///< Allow FP divisions to be reassociated. 112 CODEGENOPT(NoTrappingMath , 1, 0) ///< Set when -fno-trapping-math is enabled. 113 CODEGENOPT(NoNaNsFPMath , 1, 0) ///< Assume FP arguments, results not NaN. 114 CODEGENOPT(FlushDenorm , 1, 0) ///< Allow FP denorm numbers to be flushed to zero 115 CODEGENOPT(CorrectlyRoundedDivSqrt, 1, 0) ///< -cl-fp32-correctly-rounded-divide-sqrt 116 CODEGENOPT(NoZeroInitializedInBSS , 1, 0) ///< -fno-zero-initialized-in-bss. 117 /// \brief Method of Objective-C dispatch to use. 118 ENUM_CODEGENOPT(ObjCDispatchMethod, ObjCDispatchMethodKind, 2, Legacy) 119 CODEGENOPT(OmitLeafFramePointer , 1, 0) ///< Set when -momit-leaf-frame-pointer is 120 ///< enabled. 121 VALUE_CODEGENOPT(OptimizationLevel, 2, 0) ///< The -O[0-3] option specified. 122 VALUE_CODEGENOPT(OptimizeSize, 2, 0) ///< If -Os (==1) or -Oz (==2) is specified. 123 124 /// \brief Choose profile instrumenation kind or no instrumentation. 125 ENUM_CODEGENOPT(ProfileInstr, ProfileInstrKind, 2, ProfileNone) 126 /// \brief Choose profile kind for PGO use compilation. 127 ENUM_CODEGENOPT(ProfileUse, ProfileInstrKind, 2, ProfileNone) 128 CODEGENOPT(CoverageMapping , 1, 0) ///< Generate coverage mapping regions to 129 ///< enable code coverage analysis. 130 CODEGENOPT(DumpCoverageMapping , 1, 0) ///< Dump the generated coverage mapping 131 ///< regions. 132 133 /// If -fpcc-struct-return or -freg-struct-return is specified. 134 ENUM_CODEGENOPT(StructReturnConvention, StructReturnConventionKind, 2, SRCK_Default) 135 136 CODEGENOPT(RelaxAll , 1, 0) ///< Relax all machine code instructions. 137 CODEGENOPT(RelaxedAliasing , 1, 0) ///< Set when -fno-strict-aliasing is enabled. 138 CODEGENOPT(StructPathTBAA , 1, 0) ///< Whether or not to use struct-path TBAA. 139 CODEGENOPT(SaveTempLabels , 1, 0) ///< Save temporary labels. 140 CODEGENOPT(SanitizeAddressUseAfterScope , 1, 0) ///< Enable use-after-scope detection 141 ///< in AddressSanitizer 142 CODEGENOPT(SanitizeAddressGlobalsDeadStripping, 1, 0) ///< Enable linker dead stripping 143 ///< of globals in AddressSanitizer 144 CODEGENOPT(SanitizeMemoryTrackOrigins, 2, 0) ///< Enable tracking origins in 145 ///< MemorySanitizer 146 CODEGENOPT(SanitizeMemoryUseAfterDtor, 1, 0) ///< Enable use-after-delete detection 147 ///< in MemorySanitizer 148 CODEGENOPT(SanitizeCfiCrossDso, 1, 0) ///< Enable cross-dso support in CFI. 149 CODEGENOPT(SanitizeCoverageType, 2, 0) ///< Type of sanitizer coverage 150 ///< instrumentation. 151 CODEGENOPT(SanitizeCoverageIndirectCalls, 1, 0) ///< Enable sanitizer coverage 152 ///< for indirect calls. 153 CODEGENOPT(SanitizeCoverageTraceBB, 1, 0) ///< Enable basic block tracing in 154 ///< in sanitizer coverage. 155 CODEGENOPT(SanitizeCoverageTraceCmp, 1, 0) ///< Enable cmp instruction tracing 156 ///< in sanitizer coverage. 157 CODEGENOPT(SanitizeCoverageTraceDiv, 1, 0) ///< Enable div instruction tracing 158 ///< in sanitizer coverage. 159 CODEGENOPT(SanitizeCoverageTraceGep, 1, 0) ///< Enable GEP instruction tracing 160 ///< in sanitizer coverage. 161 CODEGENOPT(SanitizeCoverage8bitCounters, 1, 0) ///< Use 8-bit frequency counters 162 ///< in sanitizer coverage. 163 CODEGENOPT(SanitizeCoverageTracePC, 1, 0) ///< Enable PC tracing 164 ///< in sanitizer coverage. 165 CODEGENOPT(SanitizeCoverageTracePCGuard, 1, 0) ///< Enable PC tracing with guard 166 ///< in sanitizer coverage. 167 CODEGENOPT(SanitizeCoverageInline8bitCounters, 1, 0) ///< Use inline 8bit counters. 168 CODEGENOPT(SanitizeCoverageNoPrune, 1, 0) ///< Disable coverage pruning. 169 CODEGENOPT(SanitizeStats , 1, 0) ///< Collect statistics for sanitizers. 170 CODEGENOPT(SimplifyLibCalls , 1, 1) ///< Set when -fbuiltin is enabled. 171 CODEGENOPT(SoftFloat , 1, 0) ///< -soft-float. 172 CODEGENOPT(StrictEnums , 1, 0) ///< Optimize based on strict enum definition. 173 CODEGENOPT(StrictVTablePointers, 1, 0) ///< Optimize based on the strict vtable pointers 174 CODEGENOPT(TimePasses , 1, 0) ///< Set when -ftime-report is enabled. 175 CODEGENOPT(UnrollLoops , 1, 0) ///< Control whether loops are unrolled. 176 CODEGENOPT(RerollLoops , 1, 0) ///< Control whether loops are rerolled. 177 CODEGENOPT(NoUseJumpTables , 1, 0) ///< Set when -fno-jump-tables is enabled. 178 CODEGENOPT(UnsafeFPMath , 1, 0) ///< Allow unsafe floating point optzns. 179 CODEGENOPT(UnwindTables , 1, 0) ///< Emit unwind tables. 180 CODEGENOPT(VectorizeBB , 1, 0) ///< Run basic block vectorizer. 181 CODEGENOPT(VectorizeLoop , 1, 0) ///< Run loop vectorizer. 182 CODEGENOPT(VectorizeSLP , 1, 0) ///< Run SLP vectorizer. 183 184 /// Attempt to use register sized accesses to bit-fields in structures, when 185 /// possible. 186 CODEGENOPT(UseRegisterSizedBitfieldAccess , 1, 0) 187 188 CODEGENOPT(VerifyModule , 1, 1) ///< Control whether the module should be run 189 ///< through the LLVM Verifier. 190 191 CODEGENOPT(StackRealignment , 1, 0) ///< Control whether to force stack 192 ///< realignment. 193 CODEGENOPT(UseInitArray , 1, 0) ///< Control whether to use .init_array or 194 ///< .ctors. 195 VALUE_CODEGENOPT(StackAlignment , 32, 0) ///< Overrides default stack 196 ///< alignment, if not 0. 197 VALUE_CODEGENOPT(StackProbeSize , 32, 4096) ///< Overrides default stack 198 ///< probe size, even if 0. 199 CODEGENOPT(DebugColumnInfo, 1, 0) ///< Whether or not to use column information 200 ///< in debug info. 201 202 CODEGENOPT(DebugTypeExtRefs, 1, 0) ///< Whether or not debug info should contain 203 ///< external references to a PCH or module. 204 205 CODEGENOPT(DebugExplicitImport, 1, 0) ///< Whether or not debug info should 206 ///< contain explicit imports for 207 ///< anonymous namespaces 208 CODEGENOPT(EnableSplitDwarf, 1, 0) ///< Whether to enable split DWARF 209 CODEGENOPT(SplitDwarfInlining, 1, 1) ///< Whether to include inlining info in the 210 ///< skeleton CU to allow for symbolication 211 ///< of inline stack frames without .dwo files. 212 213 CODEGENOPT(EmitLLVMUseLists, 1, 0) ///< Control whether to serialize use-lists. 214 215 CODEGENOPT(WholeProgramVTables, 1, 0) ///< Whether to apply whole-program 216 /// vtable optimization. 217 218 /// Whether to use public LTO visibility for entities in std and stdext 219 /// namespaces. This is enabled by clang-cl's /MT and /MTd flags. 220 CODEGENOPT(LTOVisibilityPublicStd, 1, 0) 221 222 /// The user specified number of registers to be used for integral arguments, 223 /// or 0 if unspecified. 224 VALUE_CODEGENOPT(NumRegisterParameters, 32, 0) 225 226 /// The lower bound for a buffer to be considered for stack protection. 227 VALUE_CODEGENOPT(SSPBufferSize, 32, 0) 228 229 /// The kind of generated debug info. 230 ENUM_CODEGENOPT(DebugInfo, codegenoptions::DebugInfoKind, 3, codegenoptions::NoDebugInfo) 231 232 /// Whether to generate macro debug info. 233 CODEGENOPT(MacroDebugInfo, 1, 0) 234 235 /// Tune the debug info for this debugger. 236 ENUM_CODEGENOPT(DebuggerTuning, llvm::DebuggerKind, 2, 237 llvm::DebuggerKind::Default) 238 239 /// Dwarf version. Version zero indicates to LLVM that no DWARF should be 240 /// emitted. 241 VALUE_CODEGENOPT(DwarfVersion, 3, 0) 242 243 /// Whether we should emit CodeView debug information. It's possible to emit 244 /// CodeView and DWARF into the same object. 245 CODEGENOPT(EmitCodeView, 1, 0) 246 247 /// The kind of inlining to perform. 248 ENUM_CODEGENOPT(Inlining, InliningMethod, 2, NormalInlining) 249 250 // Vector functions library to use. 251 ENUM_CODEGENOPT(VecLib, VectorLibrary, 2, NoLibrary) 252 253 /// The default TLS model to use. 254 ENUM_CODEGENOPT(DefaultTLSModel, TLSModel, 2, GeneralDynamicTLSModel) 255 256 /// Number of path components to strip when emitting checks. (0 == full 257 /// filename) 258 VALUE_CODEGENOPT(EmitCheckPathComponentsToStrip, 32, 0) 259 260 /// Whether to report the hotness of the code region for optimization remarks. 261 CODEGENOPT(DiagnosticsWithHotness, 1, 0) 262 263 /// Whether copy relocations support is available when building as PIE. 264 CODEGENOPT(PIECopyRelocations, 1, 0) 265 266 /// Whether we should use the undefined behaviour optimization for control flow 267 /// paths that reach the end of a function without executing a required return. 268 CODEGENOPT(StrictReturn, 1, 1) 269 270 /// Whether emit extra debug info for sample pgo profile collection. 271 CODEGENOPT(DebugInfoForProfiling, 1, 0) 272 273 /// Whether 3-component vector type is preserved. 274 CODEGENOPT(PreserveVec3Type, 1, 0) 275 276 #undef CODEGENOPT 277 #undef ENUM_CODEGENOPT 278 #undef VALUE_CODEGENOPT 279 280
