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
80 CODEGENOPT(XRayInstrumentFunctions , 1, 0) ///< Set when -fxray-instrument is
83 ///< Set the minimum number of instructions in a function to determine selective
84 ///< XRay instrumentation.
85 VALUE_CODEGENOPT(XRayInstructionThreshold , 32, 200)
87 CODEGENOPT(InstrumentForProfiling , 1, 0) ///< Set when -pg is enabled.
88 CODEGENOPT(CallFEntry , 1, 0) ///< Set when -mfentry is enabled.
89 CODEGENOPT(LessPreciseFPMAD , 1, 0) ///< Enable less precise MAD instructions to
91 CODEGENOPT(PrepareForLTO , 1, 0) ///< Set when -flto is enabled on the
93 CODEGENOPT(EmitSummaryIndex, 1, 0) ///< Set when -flto=thin is enabled on the
95 CODEGENOPT(LTOUnit, 1, 0) ///< Emit IR to support LTO unit features (CFI, whole
96 ///< program vtable opt).
97 CODEGENOPT(IncrementalLinkerCompatible, 1, 0) ///< Emit an object file which can
98 ///< be used with an incremental
100 CODEGENOPT(MergeAllConstants , 1, 1) ///< Merge identical constants.
101 CODEGENOPT(MergeFunctions , 1, 0) ///< Set when -fmerge-functions is enabled.
102 CODEGENOPT(MSVolatile , 1, 0) ///< Set when /volatile:ms is enabled.
103 CODEGENOPT(NoCommon , 1, 0) ///< Set when -fno-common or C++ is enabled.
104 CODEGENOPT(NoDwarfDirectoryAsm , 1, 0) ///< Set when -fno-dwarf-directory-asm is
106 CODEGENOPT(NoExecStack , 1, 0) ///< Set when -Wa,--noexecstack is enabled.
107 CODEGENOPT(FatalWarnings , 1, 0) ///< Set when -Wa,--fatal-warnings is
109 CODEGENOPT(EnableSegmentedStacks , 1, 0) ///< Set when -fsplit-stack is enabled.
110 CODEGENOPT(NoImplicitFloat , 1, 0) ///< Set when -mno-implicit-float is enabled.
111 CODEGENOPT(NoInfsFPMath , 1, 0) ///< Assume FP arguments, results not +-Inf.
112 CODEGENOPT(NoSignedZeros , 1, 0) ///< Allow ignoring the signedness of FP zero
113 CODEGENOPT(ReciprocalMath , 1, 0) ///< Allow FP divisions to be reassociated.
114 CODEGENOPT(NoTrappingMath , 1, 0) ///< Set when -fno-trapping-math is enabled.
115 CODEGENOPT(NoNaNsFPMath , 1, 0) ///< Assume FP arguments, results not NaN.
116 CODEGENOPT(FlushDenorm , 1, 0) ///< Allow FP denorm numbers to be flushed to zero
117 CODEGENOPT(CorrectlyRoundedDivSqrt, 1, 0) ///< -cl-fp32-correctly-rounded-divide-sqrt
118 CODEGENOPT(NoZeroInitializedInBSS , 1, 0) ///< -fno-zero-initialized-in-bss.
119 /// \brief Method of Objective-C dispatch to use.
120 ENUM_CODEGENOPT(ObjCDispatchMethod, ObjCDispatchMethodKind, 2, Legacy)
121 CODEGENOPT(OmitLeafFramePointer , 1, 0) ///< Set when -momit-leaf-frame-pointer is
124 /// A version of Clang that we should attempt to be ABI-compatible with.
125 ENUM_CODEGENOPT(ClangABICompat, ClangABI, 4, ClangABI::Latest)
127 VALUE_CODEGENOPT(OptimizationLevel, 2, 0) ///< The -O[0-3] option specified.
128 VALUE_CODEGENOPT(OptimizeSize, 2, 0) ///< If -Os (==1) or -Oz (==2) is specified.
130 /// \brief Choose profile instrumenation kind or no instrumentation.
131 ENUM_CODEGENOPT(ProfileInstr, ProfileInstrKind, 2, ProfileNone)
132 /// \brief Choose profile kind for PGO use compilation.
133 ENUM_CODEGENOPT(ProfileUse, ProfileInstrKind, 2, ProfileNone)
134 CODEGENOPT(CoverageMapping , 1, 0) ///< Generate coverage mapping regions to
135 ///< enable code coverage analysis.
136 CODEGENOPT(DumpCoverageMapping , 1, 0) ///< Dump the generated coverage mapping
139 /// If -fpcc-struct-return or -freg-struct-return is specified.
140 ENUM_CODEGENOPT(StructReturnConvention, StructReturnConventionKind, 2, SRCK_Default)
142 CODEGENOPT(RelaxAll , 1, 0) ///< Relax all machine code instructions.
143 CODEGENOPT(RelaxedAliasing , 1, 0) ///< Set when -fno-strict-aliasing is enabled.
144 CODEGENOPT(StructPathTBAA , 1, 0) ///< Whether or not to use struct-path TBAA.
145 CODEGENOPT(SaveTempLabels , 1, 0) ///< Save temporary labels.
146 CODEGENOPT(SanitizeAddressUseAfterScope , 1, 0) ///< Enable use-after-scope detection
147 ///< in AddressSanitizer
148 CODEGENOPT(SanitizeAddressGlobalsDeadStripping, 1, 0) ///< Enable linker dead stripping
149 ///< of globals in AddressSanitizer
150 CODEGENOPT(SanitizeMemoryTrackOrigins, 2, 0) ///< Enable tracking origins in
152 CODEGENOPT(SanitizeMemoryUseAfterDtor, 1, 0) ///< Enable use-after-delete detection
153 ///< in MemorySanitizer
154 CODEGENOPT(SanitizeCfiCrossDso, 1, 0) ///< Enable cross-dso support in CFI.
155 CODEGENOPT(SanitizeCoverageType, 2, 0) ///< Type of sanitizer coverage
156 ///< instrumentation.
157 CODEGENOPT(SanitizeCoverageIndirectCalls, 1, 0) ///< Enable sanitizer coverage
158 ///< for indirect calls.
159 CODEGENOPT(SanitizeCoverageTraceBB, 1, 0) ///< Enable basic block tracing in
160 ///< in sanitizer coverage.
161 CODEGENOPT(SanitizeCoverageTraceCmp, 1, 0) ///< Enable cmp instruction tracing
162 ///< in sanitizer coverage.
163 CODEGENOPT(SanitizeCoverageTraceDiv, 1, 0) ///< Enable div instruction tracing
164 ///< in sanitizer coverage.
165 CODEGENOPT(SanitizeCoverageTraceGep, 1, 0) ///< Enable GEP instruction tracing
166 ///< in sanitizer coverage.
167 CODEGENOPT(SanitizeCoverage8bitCounters, 1, 0) ///< Use 8-bit frequency counters
168 ///< in sanitizer coverage.
169 CODEGENOPT(SanitizeCoverageTracePC, 1, 0) ///< Enable PC tracing
170 ///< in sanitizer coverage.
171 CODEGENOPT(SanitizeCoverageTracePCGuard, 1, 0) ///< Enable PC tracing with guard
172 ///< in sanitizer coverage.
173 CODEGENOPT(SanitizeCoverageInline8bitCounters, 1, 0) ///< Use inline 8bit counters.
174 CODEGENOPT(SanitizeCoverageNoPrune, 1, 0) ///< Disable coverage pruning.
175 CODEGENOPT(SanitizeStats , 1, 0) ///< Collect statistics for sanitizers.
176 CODEGENOPT(SimplifyLibCalls , 1, 1) ///< Set when -fbuiltin is enabled.
177 CODEGENOPT(SoftFloat , 1, 0) ///< -soft-float.
178 CODEGENOPT(StrictEnums , 1, 0) ///< Optimize based on strict enum definition.
179 CODEGENOPT(StrictVTablePointers, 1, 0) ///< Optimize based on the strict vtable pointers
180 CODEGENOPT(TimePasses , 1, 0) ///< Set when -ftime-report is enabled.
181 CODEGENOPT(UnrollLoops , 1, 0) ///< Control whether loops are unrolled.
182 CODEGENOPT(RerollLoops , 1, 0) ///< Control whether loops are rerolled.
183 CODEGENOPT(NoUseJumpTables , 1, 0) ///< Set when -fno-jump-tables is enabled.
184 CODEGENOPT(UnsafeFPMath , 1, 0) ///< Allow unsafe floating point optzns.
185 CODEGENOPT(UnwindTables , 1, 0) ///< Emit unwind tables.
186 CODEGENOPT(VectorizeLoop , 1, 0) ///< Run loop vectorizer.
187 CODEGENOPT(VectorizeSLP , 1, 0) ///< Run SLP vectorizer.
189 /// Attempt to use register sized accesses to bit-fields in structures, when
191 CODEGENOPT(UseRegisterSizedBitfieldAccess , 1, 0)
193 CODEGENOPT(VerifyModule , 1, 1) ///< Control whether the module should be run
194 ///< through the LLVM Verifier.
196 CODEGENOPT(StackRealignment , 1, 0) ///< Control whether to force stack
198 CODEGENOPT(UseInitArray , 1, 0) ///< Control whether to use .init_array or
200 VALUE_CODEGENOPT(StackAlignment , 32, 0) ///< Overrides default stack
201 ///< alignment, if not 0.
202 VALUE_CODEGENOPT(StackProbeSize , 32, 4096) ///< Overrides default stack
203 ///< probe size, even if 0.
204 CODEGENOPT(DebugColumnInfo, 1, 0) ///< Whether or not to use column information
207 CODEGENOPT(DebugTypeExtRefs, 1, 0) ///< Whether or not debug info should contain
208 ///< external references to a PCH or module.
210 CODEGENOPT(DebugExplicitImport, 1, 0) ///< Whether or not debug info should
211 ///< contain explicit imports for
212 ///< anonymous namespaces
213 CODEGENOPT(EnableSplitDwarf, 1, 0) ///< Whether to enable split DWARF
214 CODEGENOPT(SplitDwarfInlining, 1, 1) ///< Whether to include inlining info in the
215 ///< skeleton CU to allow for symbolication
216 ///< of inline stack frames without .dwo files.
218 CODEGENOPT(EmitLLVMUseLists, 1, 0) ///< Control whether to serialize use-lists.
220 CODEGENOPT(WholeProgramVTables, 1, 0) ///< Whether to apply whole-program
221 /// vtable optimization.
223 /// Whether to use public LTO visibility for entities in std and stdext
224 /// namespaces. This is enabled by clang-cl's /MT and /MTd flags.
225 CODEGENOPT(LTOVisibilityPublicStd, 1, 0)
227 /// The user specified number of registers to be used for integral arguments,
228 /// or 0 if unspecified.
229 VALUE_CODEGENOPT(NumRegisterParameters, 32, 0)
231 /// The lower bound for a buffer to be considered for stack protection.
232 VALUE_CODEGENOPT(SSPBufferSize, 32, 0)
234 /// The kind of generated debug info.
235 ENUM_CODEGENOPT(DebugInfo, codegenoptions::DebugInfoKind, 3, codegenoptions::NoDebugInfo)
237 /// Whether to generate macro debug info.
238 CODEGENOPT(MacroDebugInfo, 1, 0)
240 /// Tune the debug info for this debugger.
241 ENUM_CODEGENOPT(DebuggerTuning, llvm::DebuggerKind, 2,
242 llvm::DebuggerKind::Default)
244 /// Dwarf version. Version zero indicates to LLVM that no DWARF should be
246 VALUE_CODEGENOPT(DwarfVersion, 3, 0)
248 /// Whether we should emit CodeView debug information. It's possible to emit
249 /// CodeView and DWARF into the same object.
250 CODEGENOPT(EmitCodeView, 1, 0)
252 /// The kind of inlining to perform.
253 ENUM_CODEGENOPT(Inlining, InliningMethod, 2, NormalInlining)
255 // Vector functions library to use.
256 ENUM_CODEGENOPT(VecLib, VectorLibrary, 2, NoLibrary)
258 /// The default TLS model to use.
259 ENUM_CODEGENOPT(DefaultTLSModel, TLSModel, 2, GeneralDynamicTLSModel)
261 /// Number of path components to strip when emitting checks. (0 == full
263 VALUE_CODEGENOPT(EmitCheckPathComponentsToStrip, 32, 0)
265 /// Whether to report the hotness of the code region for optimization remarks.
266 CODEGENOPT(DiagnosticsWithHotness, 1, 0)
268 /// The minimum hotness value a diagnostic needs in order to be included in
269 /// optimization diagnostics.
270 VALUE_CODEGENOPT(DiagnosticsHotnessThreshold, 32, 0)
272 /// Whether copy relocations support is available when building as PIE.
273 CODEGENOPT(PIECopyRelocations, 1, 0)
275 /// Whether we should use the undefined behaviour optimization for control flow
276 /// paths that reach the end of a function without executing a required return.
277 CODEGENOPT(StrictReturn, 1, 1)
279 /// Whether emit extra debug info for sample pgo profile collection.
280 CODEGENOPT(DebugInfoForProfiling, 1, 0)
282 /// Whether 3-component vector type is preserved.
283 CODEGENOPT(PreserveVec3Type, 1, 0)
286 #undef ENUM_CODEGENOPT
287 #undef VALUE_CODEGENOPT