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