1 //===--- CodeGenOptions.def - Code generation option database ----- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
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.
16 //===----------------------------------------------------------------------===//
18 # error Define the CODEGENOPT macro to handle language options
21 #ifndef VALUE_CODEGENOPT
22 # define VALUE_CODEGENOPT(Name, Bits, Default) \
23 CODEGENOPT(Name, Bits, Default)
26 #ifndef ENUM_CODEGENOPT
27 # define ENUM_CODEGENOPT(Name, Type, Bits, Default) \
28 CODEGENOPT(Name, Bits, Default)
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
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
60 CODEGENOPT(DebugPassManager, 1, 0) ///< Prints debug information for the new
62 CODEGENOPT(DisableRedZone , 1, 0) ///< Set when -mno-red-zone is enabled.
63 CODEGENOPT(DisableTailCalls , 1, 0) ///< Do not emit tail calls.
64 CODEGENOPT(EmitDeclMetadata , 1, 0) ///< Emit special metadata indicating what
65 ///< Decl* various IR entities came from.
66 ///< Only useful when running CodeGen as a
68 CODEGENOPT(EmitGcovArcs , 1, 0) ///< Emit coverage data files, aka. GCDA.
69 CODEGENOPT(EmitGcovNotes , 1, 0) ///< Emit coverage "notes" files, aka GCNO.
70 CODEGENOPT(EmitOpenCLArgMetadata , 1, 0) ///< Emit OpenCL kernel arg metadata.
71 CODEGENOPT(EmulatedTLS , 1, 0) ///< Set when -femulated-tls is enabled.
72 /// \brief Embed Bitcode mode (off/all/bitcode/marker).
73 ENUM_CODEGENOPT(EmbedBitcode, EmbedBitcodeKind, 2, Embed_Off)
74 CODEGENOPT(ForbidGuardVariables , 1, 0) ///< Issue errors if C++ guard variables
76 CODEGENOPT(FunctionSections , 1, 0) ///< Set when -ffunction-sections is enabled.
77 CODEGENOPT(InstrumentFunctions , 1, 0) ///< Set when -finstrument-functions is
79 CODEGENOPT(InstrumentFunctionsAfterInlining , 1, 0) ///< Set when
80 ///< -finstrument-functions-after-inlining is enabled.
81 CODEGENOPT(InstrumentFunctionEntryBare , 1, 0) ///< Set when
82 ///< -finstrument-function-entry-bare is enabled.
84 CODEGENOPT(XRayInstrumentFunctions , 1, 0) ///< Set when -fxray-instrument is
87 ///< Set when -fxray-always-emit-customevents is enabled.
88 CODEGENOPT(XRayAlwaysEmitCustomEvents , 1, 0)
90 ///< Set the minimum number of instructions in a function to determine selective
91 ///< XRay instrumentation.
92 VALUE_CODEGENOPT(XRayInstructionThreshold , 32, 200)
94 CODEGENOPT(InstrumentForProfiling , 1, 0) ///< Set when -pg is enabled.
95 CODEGENOPT(CallFEntry , 1, 0) ///< Set when -mfentry is enabled.
96 CODEGENOPT(LessPreciseFPMAD , 1, 0) ///< Enable less precise MAD instructions to
98 CODEGENOPT(PrepareForLTO , 1, 0) ///< Set when -flto is enabled on the
100 CODEGENOPT(EmitSummaryIndex, 1, 0) ///< Set when -flto=thin is enabled on the
102 CODEGENOPT(LTOUnit, 1, 0) ///< Emit IR to support LTO unit features (CFI, whole
103 ///< program vtable opt).
104 CODEGENOPT(IncrementalLinkerCompatible, 1, 0) ///< Emit an object file which can
105 ///< be used with an incremental
107 CODEGENOPT(MergeAllConstants , 1, 1) ///< Merge identical constants.
108 CODEGENOPT(MergeFunctions , 1, 0) ///< Set when -fmerge-functions is enabled.
109 CODEGENOPT(MSVolatile , 1, 0) ///< Set when /volatile:ms is enabled.
110 CODEGENOPT(NoCommon , 1, 0) ///< Set when -fno-common or C++ is enabled.
111 CODEGENOPT(NoDwarfDirectoryAsm , 1, 0) ///< Set when -fno-dwarf-directory-asm is
113 CODEGENOPT(NoExecStack , 1, 0) ///< Set when -Wa,--noexecstack is enabled.
114 CODEGENOPT(FatalWarnings , 1, 0) ///< Set when -Wa,--fatal-warnings is
116 CODEGENOPT(EnableSegmentedStacks , 1, 0) ///< Set when -fsplit-stack is enabled.
117 CODEGENOPT(NoImplicitFloat , 1, 0) ///< Set when -mno-implicit-float is enabled.
118 CODEGENOPT(NoInfsFPMath , 1, 0) ///< Assume FP arguments, results not +-Inf.
119 CODEGENOPT(NoSignedZeros , 1, 0) ///< Allow ignoring the signedness of FP zero
120 CODEGENOPT(Reassociate , 1, 0) ///< Allow reassociation of FP math ops
121 CODEGENOPT(ReciprocalMath , 1, 0) ///< Allow FP divisions to be reassociated.
122 CODEGENOPT(NoTrappingMath , 1, 0) ///< Set when -fno-trapping-math is enabled.
123 CODEGENOPT(NoNaNsFPMath , 1, 0) ///< Assume FP arguments, results not NaN.
124 CODEGENOPT(FlushDenorm , 1, 0) ///< Allow FP denorm numbers to be flushed to zero
125 CODEGENOPT(CorrectlyRoundedDivSqrt, 1, 0) ///< -cl-fp32-correctly-rounded-divide-sqrt
126 CODEGENOPT(NoZeroInitializedInBSS , 1, 0) ///< -fno-zero-initialized-in-bss.
127 /// \brief Method of Objective-C dispatch to use.
128 ENUM_CODEGENOPT(ObjCDispatchMethod, ObjCDispatchMethodKind, 2, Legacy)
129 CODEGENOPT(OmitLeafFramePointer , 1, 0) ///< Set when -momit-leaf-frame-pointer is
132 /// A version of Clang that we should attempt to be ABI-compatible with.
133 ENUM_CODEGENOPT(ClangABICompat, ClangABI, 4, ClangABI::Latest)
135 VALUE_CODEGENOPT(OptimizationLevel, 2, 0) ///< The -O[0-3] option specified.
136 VALUE_CODEGENOPT(OptimizeSize, 2, 0) ///< If -Os (==1) or -Oz (==2) is specified.
138 /// \brief Choose profile instrumenation kind or no instrumentation.
139 ENUM_CODEGENOPT(ProfileInstr, ProfileInstrKind, 2, ProfileNone)
140 /// \brief Choose profile kind for PGO use compilation.
141 ENUM_CODEGENOPT(ProfileUse, ProfileInstrKind, 2, ProfileNone)
142 CODEGENOPT(CoverageMapping , 1, 0) ///< Generate coverage mapping regions to
143 ///< enable code coverage analysis.
144 CODEGENOPT(DumpCoverageMapping , 1, 0) ///< Dump the generated coverage mapping
147 /// If -fpcc-struct-return or -freg-struct-return is specified.
148 ENUM_CODEGENOPT(StructReturnConvention, StructReturnConventionKind, 2, SRCK_Default)
150 CODEGENOPT(RelaxAll , 1, 0) ///< Relax all machine code instructions.
151 CODEGENOPT(RelaxedAliasing , 1, 0) ///< Set when -fno-strict-aliasing is enabled.
152 CODEGENOPT(StructPathTBAA , 1, 0) ///< Whether or not to use struct-path TBAA.
153 CODEGENOPT(NewStructPathTBAA , 1, 0) ///< Whether or not to use enhanced struct-path TBAA.
154 CODEGENOPT(SaveTempLabels , 1, 0) ///< Save temporary labels.
155 CODEGENOPT(SanitizeAddressUseAfterScope , 1, 0) ///< Enable use-after-scope detection
156 ///< in AddressSanitizer
157 CODEGENOPT(SanitizeAddressGlobalsDeadStripping, 1, 0) ///< Enable linker dead stripping
158 ///< of globals in AddressSanitizer
159 CODEGENOPT(SanitizeMemoryTrackOrigins, 2, 0) ///< Enable tracking origins in
161 CODEGENOPT(SanitizeMemoryUseAfterDtor, 1, 0) ///< Enable use-after-delete detection
162 ///< in MemorySanitizer
163 CODEGENOPT(SanitizeCfiCrossDso, 1, 0) ///< Enable cross-dso support in CFI.
164 CODEGENOPT(SanitizeMinimalRuntime, 1, 0) ///< Use "_minimal" sanitizer runtime for
166 CODEGENOPT(SanitizeCfiICallGeneralizePointers, 1, 0) ///< Generalize pointer types in
167 ///< CFI icall function signatures
168 CODEGENOPT(SanitizeCoverageType, 2, 0) ///< Type of sanitizer coverage
169 ///< instrumentation.
170 CODEGENOPT(SanitizeCoverageIndirectCalls, 1, 0) ///< Enable sanitizer coverage
171 ///< for indirect calls.
172 CODEGENOPT(SanitizeCoverageTraceBB, 1, 0) ///< Enable basic block tracing in
173 ///< in sanitizer coverage.
174 CODEGENOPT(SanitizeCoverageTraceCmp, 1, 0) ///< Enable cmp instruction tracing
175 ///< in sanitizer coverage.
176 CODEGENOPT(SanitizeCoverageTraceDiv, 1, 0) ///< Enable div instruction tracing
177 ///< in sanitizer coverage.
178 CODEGENOPT(SanitizeCoverageTraceGep, 1, 0) ///< Enable GEP instruction tracing
179 ///< in sanitizer coverage.
180 CODEGENOPT(SanitizeCoverage8bitCounters, 1, 0) ///< Use 8-bit frequency counters
181 ///< in sanitizer coverage.
182 CODEGENOPT(SanitizeCoverageTracePC, 1, 0) ///< Enable PC tracing
183 ///< in sanitizer coverage.
184 CODEGENOPT(SanitizeCoverageTracePCGuard, 1, 0) ///< Enable PC tracing with guard
185 ///< in sanitizer coverage.
186 CODEGENOPT(SanitizeCoverageInline8bitCounters, 1, 0) ///< Use inline 8bit counters.
187 CODEGENOPT(SanitizeCoveragePCTable, 1, 0) ///< Create a PC Table.
188 CODEGENOPT(SanitizeCoverageNoPrune, 1, 0) ///< Disable coverage pruning.
189 CODEGENOPT(SanitizeCoverageStackDepth, 1, 0) ///< Enable max stack depth tracing
190 CODEGENOPT(SanitizeStats , 1, 0) ///< Collect statistics for sanitizers.
191 CODEGENOPT(SimplifyLibCalls , 1, 1) ///< Set when -fbuiltin is enabled.
192 CODEGENOPT(SoftFloat , 1, 0) ///< -soft-float.
193 CODEGENOPT(FineGrainedBitfieldAccesses, 1, 0) ///< Enable fine-grained bitfield accesses.
194 CODEGENOPT(StrictEnums , 1, 0) ///< Optimize based on strict enum definition.
195 CODEGENOPT(StrictVTablePointers, 1, 0) ///< Optimize based on the strict vtable pointers
196 CODEGENOPT(TimePasses , 1, 0) ///< Set when -ftime-report is enabled.
197 CODEGENOPT(UnrollLoops , 1, 0) ///< Control whether loops are unrolled.
198 CODEGENOPT(RerollLoops , 1, 0) ///< Control whether loops are rerolled.
199 CODEGENOPT(NoUseJumpTables , 1, 0) ///< Set when -fno-jump-tables is enabled.
200 CODEGENOPT(UnsafeFPMath , 1, 0) ///< Allow unsafe floating point optzns.
201 CODEGENOPT(UnwindTables , 1, 0) ///< Emit unwind tables.
202 CODEGENOPT(VectorizeLoop , 1, 0) ///< Run loop vectorizer.
203 CODEGENOPT(VectorizeSLP , 1, 0) ///< Run SLP vectorizer.
204 CODEGENOPT(ProfileSampleAccurate, 1, 0) ///< Sample profile is accurate.
206 /// Attempt to use register sized accesses to bit-fields in structures, when
208 CODEGENOPT(UseRegisterSizedBitfieldAccess , 1, 0)
210 CODEGENOPT(VerifyModule , 1, 1) ///< Control whether the module should be run
211 ///< through the LLVM Verifier.
213 CODEGENOPT(StackRealignment , 1, 0) ///< Control whether to force stack
215 CODEGENOPT(UseInitArray , 1, 0) ///< Control whether to use .init_array or
217 VALUE_CODEGENOPT(StackAlignment , 32, 0) ///< Overrides default stack
218 ///< alignment, if not 0.
219 VALUE_CODEGENOPT(StackProbeSize , 32, 4096) ///< Overrides default stack
220 ///< probe size, even if 0.
221 CODEGENOPT(DebugColumnInfo, 1, 0) ///< Whether or not to use column information
224 CODEGENOPT(DebugTypeExtRefs, 1, 0) ///< Whether or not debug info should contain
225 ///< external references to a PCH or module.
227 CODEGENOPT(DebugExplicitImport, 1, 0) ///< Whether or not debug info should
228 ///< contain explicit imports for
229 ///< anonymous namespaces
230 CODEGENOPT(EnableSplitDwarf, 1, 0) ///< Whether to enable split DWARF
231 CODEGENOPT(SplitDwarfInlining, 1, 1) ///< Whether to include inlining info in the
232 ///< skeleton CU to allow for symbolication
233 ///< of inline stack frames without .dwo files.
234 CODEGENOPT(DebugFwdTemplateParams, 1, 0) ///< Whether to emit complete
235 ///< template parameter descriptions in
236 ///< forward declarations (versus just
237 ///< including them in the name).
239 CODEGENOPT(EmitLLVMUseLists, 1, 0) ///< Control whether to serialize use-lists.
241 CODEGENOPT(WholeProgramVTables, 1, 0) ///< Whether to apply whole-program
242 /// vtable optimization.
244 /// Whether to use public LTO visibility for entities in std and stdext
245 /// namespaces. This is enabled by clang-cl's /MT and /MTd flags.
246 CODEGENOPT(LTOVisibilityPublicStd, 1, 0)
248 /// The user specified number of registers to be used for integral arguments,
249 /// or 0 if unspecified.
250 VALUE_CODEGENOPT(NumRegisterParameters, 32, 0)
252 /// The lower bound for a buffer to be considered for stack protection.
253 VALUE_CODEGENOPT(SSPBufferSize, 32, 0)
255 /// The kind of generated debug info.
256 ENUM_CODEGENOPT(DebugInfo, codegenoptions::DebugInfoKind, 3, codegenoptions::NoDebugInfo)
258 /// Whether to generate macro debug info.
259 CODEGENOPT(MacroDebugInfo, 1, 0)
261 /// Tune the debug info for this debugger.
262 ENUM_CODEGENOPT(DebuggerTuning, llvm::DebuggerKind, 2,
263 llvm::DebuggerKind::Default)
265 /// Dwarf version. Version zero indicates to LLVM that no DWARF should be
267 VALUE_CODEGENOPT(DwarfVersion, 3, 0)
269 /// Whether we should emit CodeView debug information. It's possible to emit
270 /// CodeView and DWARF into the same object.
271 CODEGENOPT(EmitCodeView, 1, 0)
273 /// The kind of inlining to perform.
274 ENUM_CODEGENOPT(Inlining, InliningMethod, 2, NormalInlining)
276 // Vector functions library to use.
277 ENUM_CODEGENOPT(VecLib, VectorLibrary, 2, NoLibrary)
279 /// The default TLS model to use.
280 ENUM_CODEGENOPT(DefaultTLSModel, TLSModel, 2, GeneralDynamicTLSModel)
282 /// Number of path components to strip when emitting checks. (0 == full
284 VALUE_CODEGENOPT(EmitCheckPathComponentsToStrip, 32, 0)
286 /// Whether to report the hotness of the code region for optimization remarks.
287 CODEGENOPT(DiagnosticsWithHotness, 1, 0)
289 /// The minimum hotness value a diagnostic needs in order to be included in
290 /// optimization diagnostics.
291 VALUE_CODEGENOPT(DiagnosticsHotnessThreshold, 32, 0)
293 /// Whether copy relocations support is available when building as PIE.
294 CODEGENOPT(PIECopyRelocations, 1, 0)
296 /// Whether we should use the undefined behaviour optimization for control flow
297 /// paths that reach the end of a function without executing a required return.
298 CODEGENOPT(StrictReturn, 1, 1)
300 /// Whether emit extra debug info for sample pgo profile collection.
301 CODEGENOPT(DebugInfoForProfiling, 1, 0)
303 /// Whether 3-component vector type is preserved.
304 CODEGENOPT(PreserveVec3Type, 1, 0)
306 /// Whether to emit .debug_gnu_pubnames section instead of .debug_pubnames.
307 CODEGENOPT(GnuPubnames, 1, 0)
309 CODEGENOPT(NoPLT, 1, 0)
312 #undef ENUM_CODEGENOPT
313 #undef VALUE_CODEGENOPT