1//===--- CodeGenOptions.def - Code generation option database ----- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file defines the code generation options. Users of this file
10// must define the CODEGENOPT macro to make use of this information.
11// Optionally, the user may also define ENUM_CODEGENOPT (for options
12// that have enumeration type and VALUE_CODEGENOPT is a code
13// generation option that describes a value rather than a flag.
14//
15// AFFECTING_VALUE_CODEGENOPT is used for code generation options that can
16// affect the AST.
17//
18//===----------------------------------------------------------------------===//
19#ifndef CODEGENOPT
20# error Define the CODEGENOPT macro to handle language options
21#endif
22
23#ifndef VALUE_CODEGENOPT
24# define VALUE_CODEGENOPT(Name, Bits, Default) \
25CODEGENOPT(Name, Bits, Default)
26#endif
27
28#ifndef ENUM_CODEGENOPT
29# define ENUM_CODEGENOPT(Name, Type, Bits, Default) \
30CODEGENOPT(Name, Bits, Default)
31#endif
32
33#ifndef AFFECTING_VALUE_CODEGENOPT
34# define AFFECTING_VALUE_CODEGENOPT(Name, Bits, Default) \
35VALUE_CODEGENOPT(Name, Bits, Default)
36#endif
37
38CODEGENOPT(DisableIntegratedAS, 1, 0) ///< -no-integrated-as
39CODEGENOPT(RelaxELFRelocations, 1, 1) ///< -Wa,-mrelax-relocations={yes,no}
40CODEGENOPT(AsmVerbose , 1, 0) ///< -dA, -fverbose-asm.
41CODEGENOPT(PreserveAsmComments, 1, 1) ///< -dA, -fno-preserve-as-comments.
42CODEGENOPT(AssumeSaneOperatorNew , 1, 1) ///< implicit __attribute__((malloc)) operator new
43CODEGENOPT(AssumeUniqueVTables , 1, 1) ///< Assume a class has only one vtable.
44CODEGENOPT(Autolink , 1, 1) ///< -fno-autolink
45CODEGENOPT(AutoImport , 1, 1) ///< -fno-auto-import
46CODEGENOPT(ObjCAutoRefCountExceptions , 1, 0) ///< Whether ARC should be EH-safe.
47CODEGENOPT(Backchain , 1, 0) ///< -mbackchain
48CODEGENOPT(ControlFlowGuardNoChecks , 1, 0) ///< -cfguard-no-checks
49CODEGENOPT(ControlFlowGuard , 1, 0) ///< -cfguard
50CODEGENOPT(EHContGuard , 1, 0) ///< -ehcontguard
51CODEGENOPT(CXAAtExit , 1, 1) ///< Use __cxa_atexit for calling destructors.
52CODEGENOPT(RegisterGlobalDtorsWithAtExit, 1, 1) ///< Use atexit or __cxa_atexit to register global destructors.
53CODEGENOPT(CXXCtorDtorAliases, 1, 0) ///< Emit complete ctors/dtors as linker
54 ///< aliases to base ctors when possible.
55CODEGENOPT(DataSections , 1, 0) ///< Set when -fdata-sections is enabled.
56CODEGENOPT(UniqueSectionNames, 1, 1) ///< Set for -funique-section-names.
57CODEGENOPT(UniqueBasicBlockSectionNames, 1, 1) ///< Set for -funique-basic-block-section-names,
58 ///< Produce unique section names with
59 ///< basic block sections.
60CODEGENOPT(EnableAIXExtendedAltivecABI, 1, 0) ///< Set for -mabi=vec-extabi. Enables the extended Altivec ABI on AIX.
61CODEGENOPT(XCOFFReadOnlyPointers, 1, 0) ///< Set for -mxcoff-roptr.
62ENUM_CODEGENOPT(FramePointer, FramePointerKind, 2, FramePointerKind::None) /// frame-pointer: all,non-leaf,none
63
64CODEGENOPT(ClearASTBeforeBackend , 1, 0) ///< Free the AST before running backend code generation. Only works with -disable-free.
65CODEGENOPT(DisableFree , 1, 0) ///< Don't free memory.
66CODEGENOPT(DiscardValueNames , 1, 0) ///< Discard Value Names from the IR (LLVMContext flag)
67CODEGENOPT(DisableLLVMPasses , 1, 0) ///< Don't run any LLVM IR passes to get
68 ///< the pristine IR generated by the
69 ///< frontend.
70CODEGENOPT(DisableLifetimeMarkers, 1, 0) ///< Don't emit any lifetime markers
71CODEGENOPT(DisableO0ImplyOptNone , 1, 0) ///< Don't annonate function with optnone at O0
72CODEGENOPT(ExperimentalStrictFloatingPoint, 1, 0) ///< Enables the new, experimental
73 ///< strict floating point.
74CODEGENOPT(EnableNoundefAttrs, 1, 0) ///< Enable emitting `noundef` attributes on IR call arguments and return values
75CODEGENOPT(DebugPassManager, 1, 0) ///< Prints debug information for the new
76 ///< pass manager.
77CODEGENOPT(DisableRedZone , 1, 0) ///< Set when -mno-red-zone is enabled.
78CODEGENOPT(EmitCallSiteInfo, 1, 0) ///< Emit call site info only in the case of
79 ///< '-g' + 'O>0' level.
80CODEGENOPT(IndirectTlsSegRefs, 1, 0) ///< Set when -mno-tls-direct-seg-refs
81 ///< is specified.
82CODEGENOPT(DisableTailCalls , 1, 0) ///< Do not emit tail calls.
83CODEGENOPT(NoEscapingBlockTailCalls, 1, 0) ///< Do not emit tail calls from
84 ///< escaping blocks.
85CODEGENOPT(EmitDeclMetadata , 1, 0) ///< Emit special metadata indicating what
86 ///< Decl* various IR entities came from.
87 ///< Only useful when running CodeGen as a
88 ///< subroutine.
89CODEGENOPT(EmitVersionIdentMetadata , 1, 1) ///< Emit compiler version metadata.
90CODEGENOPT(EmitOpenCLArgMetadata , 1, 0) ///< Emit OpenCL kernel arg metadata.
91CODEGENOPT(EmulatedTLS , 1, 0) ///< Set by default or -f[no-]emulated-tls.
92/// Embed Bitcode mode (off/all/bitcode/marker).
93ENUM_CODEGENOPT(EmbedBitcode, EmbedBitcodeKind, 2, Embed_Off)
94/// Inline asm dialect, -masm=(att|intel)
95ENUM_CODEGENOPT(InlineAsmDialect, InlineAsmDialectKind, 1, IAD_ATT)
96CODEGENOPT(ForbidGuardVariables , 1, 0) ///< Issue errors if C++ guard variables
97 ///< are required.
98CODEGENOPT(FunctionSections , 1, 0) ///< Set when -ffunction-sections is enabled.
99CODEGENOPT(BBAddrMap , 1, 0) ///< Set when -fbasic-block-address-map is enabled.
100CODEGENOPT(InstrumentFunctions , 1, 0) ///< Set when -finstrument-functions is
101 ///< enabled.
102CODEGENOPT(InstrumentFunctionsAfterInlining , 1, 0) ///< Set when
103 ///< -finstrument-functions-after-inlining is enabled.
104CODEGENOPT(InstrumentFunctionEntryBare , 1, 0) ///< Set when
105 ///< -finstrument-function-entry-bare is enabled.
106CODEGENOPT(CFProtectionReturn , 1, 0) ///< if -fcf-protection is
107 ///< set to full or return.
108CODEGENOPT(CFProtectionBranch , 1, 0) ///< if -fcf-protection is
109 ///< set to full or branch.
110CODEGENOPT(FunctionReturnThunks, 1, 0) ///< -mfunction-return={keep|thunk-extern}
111CODEGENOPT(IndirectBranchCSPrefix, 1, 0) ///< if -mindirect-branch-cs-prefix
112 ///< is set.
113
114CODEGENOPT(XRayInstrumentFunctions , 1, 0) ///< Set when -fxray-instrument is
115 ///< enabled.
116CODEGENOPT(StackSizeSection , 1, 0) ///< Set when -fstack-size-section is enabled.
117
118///< Set when -femit-compact-unwind-non-canonical is enabled.
119CODEGENOPT(EmitCompactUnwindNonCanonical, 1, 0)
120
121///< Set when -fxray-always-emit-customevents is enabled.
122CODEGENOPT(XRayAlwaysEmitCustomEvents , 1, 0)
123
124///< Set when -fxray-always-emit-typedevents is enabled.
125CODEGENOPT(XRayAlwaysEmitTypedEvents , 1, 0)
126
127///< Set when -fxray-ignore-loops is enabled.
128CODEGENOPT(XRayIgnoreLoops , 1, 0)
129
130///< Emit the XRay function index section.
131CODEGENOPT(XRayFunctionIndex , 1, 1)
132
133
134///< Set the minimum number of instructions in a function to determine selective
135///< XRay instrumentation.
136VALUE_CODEGENOPT(XRayInstructionThreshold , 32, 200)
137
138///< Only instrument 1 in N functions, by dividing functions into N total groups and
139///< instrumenting only the specified group at a time. Group numbers start at 0
140///< and end at N-1.
141VALUE_CODEGENOPT(XRayTotalFunctionGroups, 32, 1)
142VALUE_CODEGENOPT(XRaySelectedFunctionGroup, 32, 0)
143
144VALUE_CODEGENOPT(PatchableFunctionEntryCount , 32, 0) ///< Number of NOPs at function entry
145VALUE_CODEGENOPT(PatchableFunctionEntryOffset , 32, 0)
146
147CODEGENOPT(HotPatch, 1, 0) ///< Supports the Microsoft /HOTPATCH flag and
148 ///< generates a 'patchable-function' attribute.
149
150CODEGENOPT(JMCInstrument, 1, 0) ///< Set when -fjmc is enabled.
151CODEGENOPT(InstrumentForProfiling , 1, 0) ///< Set when -pg is enabled.
152CODEGENOPT(CallFEntry , 1, 0) ///< Set when -mfentry is enabled.
153CODEGENOPT(MNopMCount , 1, 0) ///< Set when -mnop-mcount is enabled.
154CODEGENOPT(RecordMCount , 1, 0) ///< Set when -mrecord-mcount is enabled.
155CODEGENOPT(PackedStack , 1, 0) ///< Set when -mpacked-stack is enabled.
156CODEGENOPT(LessPreciseFPMAD , 1, 0) ///< Enable less precise MAD instructions to
157 ///< be generated.
158CODEGENOPT(PrepareForLTO , 1, 0) ///< Set when -flto is enabled on the
159 ///< compile step.
160CODEGENOPT(PrepareForThinLTO , 1, 0) ///< Set when -flto=thin is enabled on the
161 ///< compile step.
162CODEGENOPT(LTOUnit, 1, 0) ///< Emit IR to support LTO unit features (CFI, whole
163 ///< program vtable opt).
164CODEGENOPT(FatLTO, 1, 0) ///< Set when -ffat-lto-objects is enabled.
165CODEGENOPT(EnableSplitLTOUnit, 1, 0) ///< Enable LTO unit splitting to support
166 /// CFI and traditional whole program
167 /// devirtualization that require whole
168 /// program IR support.
169CODEGENOPT(UnifiedLTO, 1, 0) ///< Use the unified LTO pipeline.
170CODEGENOPT(IncrementalLinkerCompatible, 1, 0) ///< Emit an object file which can
171 ///< be used with an incremental
172 ///< linker.
173CODEGENOPT(MergeAllConstants , 1, 1) ///< Merge identical constants.
174CODEGENOPT(MergeFunctions , 1, 0) ///< Set when -fmerge-functions is enabled.
175CODEGENOPT(NoCommon , 1, 0) ///< Set when -fno-common or C++ is enabled.
176CODEGENOPT(NoExecStack , 1, 0) ///< Set when -Wa,--noexecstack is enabled.
177CODEGENOPT(FatalWarnings , 1, 0) ///< Set when -Wa,--fatal-warnings is
178 ///< enabled.
179CODEGENOPT(NoWarn , 1, 0) ///< Set when -Wa,--no-warn is enabled.
180CODEGENOPT(NoTypeCheck , 1, 0) ///< Set when -Wa,--no-type-check is enabled.
181CODEGENOPT(MisExpect , 1, 0) ///< Set when -Wmisexpect is enabled
182CODEGENOPT(EnableSegmentedStacks , 1, 0) ///< Set when -fsplit-stack is enabled.
183CODEGENOPT(StackClashProtector, 1, 0) ///< Set when -fstack-clash-protection is enabled.
184CODEGENOPT(NoImplicitFloat , 1, 0) ///< Set when -mno-implicit-float is enabled.
185CODEGENOPT(NullPointerIsValid , 1, 0) ///< Assume Null pointer deference is defined.
186CODEGENOPT(OpenCLCorrectlyRoundedDivSqrt, 1, 0) ///< -cl-fp32-correctly-rounded-divide-sqrt
187CODEGENOPT(HIPCorrectlyRoundedDivSqrt, 1, 1) ///< -fno-hip-fp32-correctly-rounded-divide-sqrt
188CODEGENOPT(HIPSaveKernelArgName, 1, 0) ///< Set when -fhip-kernel-arg-name is enabled.
189CODEGENOPT(UniqueInternalLinkageNames, 1, 0) ///< Internal Linkage symbols get unique names.
190CODEGENOPT(SplitMachineFunctions, 1, 0) ///< Split machine functions using profile information.
191CODEGENOPT(PPCUseFullRegisterNames, 1, 0) ///< Print full register names in assembly
192
193/// When false, this attempts to generate code as if the result of an
194/// overflowing conversion matches the overflowing behavior of a target's native
195/// float-to-int conversion instructions.
196CODEGENOPT(StrictFloatCastOverflow, 1, 1)
197
198CODEGENOPT(NoZeroInitializedInBSS , 1, 0) ///< -fno-zero-initialized-in-bss.
199/// Method of Objective-C dispatch to use.
200ENUM_CODEGENOPT(ObjCDispatchMethod, ObjCDispatchMethodKind, 2, Legacy)
201/// Replace certain message sends with calls to ObjC runtime entrypoints
202CODEGENOPT(ObjCConvertMessagesToRuntimeCalls , 1, 1)
203CODEGENOPT(ObjCAvoidHeapifyLocalBlocks, 1, 0)
204
205
206// The optimization options affect frontend options, whicn in turn do affect the AST.
207AFFECTING_VALUE_CODEGENOPT(OptimizationLevel, 2, 0) ///< The -O[0-3] option specified.
208AFFECTING_VALUE_CODEGENOPT(OptimizeSize, 2, 0) ///< If -Os (==1) or -Oz (==2) is specified.
209
210CODEGENOPT(AtomicProfileUpdate , 1, 0) ///< Set -fprofile-update=atomic
211/// Choose profile instrumenation kind or no instrumentation.
212ENUM_CODEGENOPT(ProfileInstr, ProfileInstrKind, 2, ProfileNone)
213/// Choose profile kind for PGO use compilation.
214ENUM_CODEGENOPT(ProfileUse, ProfileInstrKind, 2, ProfileNone)
215/// Partition functions into N groups and select only functions in group i to be
216/// instrumented. Selected group numbers can be 0 to N-1 inclusive.
217VALUE_CODEGENOPT(ProfileTotalFunctionGroups, 32, 1)
218VALUE_CODEGENOPT(ProfileSelectedFunctionGroup, 32, 0)
219CODEGENOPT(CoverageMapping , 1, 0) ///< Generate coverage mapping regions to
220 ///< enable code coverage analysis.
221CODEGENOPT(DumpCoverageMapping , 1, 0) ///< Dump the generated coverage mapping
222 ///< regions.
223CODEGENOPT(MCDCCoverage , 1, 0) ///< Enable MC/DC code coverage criteria.
224
225 /// If -fpcc-struct-return or -freg-struct-return is specified.
226ENUM_CODEGENOPT(StructReturnConvention, StructReturnConventionKind, 2, SRCK_Default)
227
228CODEGENOPT(RelaxAll , 1, 0) ///< Relax all machine code instructions.
229CODEGENOPT(RelaxedAliasing , 1, 0) ///< Set when -fno-strict-aliasing is enabled.
230CODEGENOPT(StructPathTBAA , 1, 0) ///< Whether or not to use struct-path TBAA.
231CODEGENOPT(NewStructPathTBAA , 1, 0) ///< Whether or not to use enhanced struct-path TBAA.
232CODEGENOPT(SaveTempLabels , 1, 0) ///< Save temporary labels.
233CODEGENOPT(SanitizeAddressUseAfterScope , 1, 0) ///< Enable use-after-scope detection
234 ///< in AddressSanitizer
235ENUM_CODEGENOPT(SanitizeAddressUseAfterReturn,
236 llvm::AsanDetectStackUseAfterReturnMode, 2,
237 llvm::AsanDetectStackUseAfterReturnMode::Runtime
238 ) ///< Set detection mode for stack-use-after-return.
239CODEGENOPT(SanitizeAddressPoisonCustomArrayCookie, 1,
240 0) ///< Enable poisoning operator new[] which is not a replaceable
241 ///< global allocation function in AddressSanitizer
242CODEGENOPT(SanitizeAddressGlobalsDeadStripping, 1, 0) ///< Enable linker dead stripping
243 ///< of globals in AddressSanitizer
244CODEGENOPT(SanitizeAddressUseOdrIndicator, 1, 0) ///< Enable ODR indicator globals
245CODEGENOPT(SanitizeMemoryTrackOrigins, 2, 0) ///< Enable tracking origins in
246 ///< MemorySanitizer
247ENUM_CODEGENOPT(SanitizeAddressDtor, llvm::AsanDtorKind, 2,
248 llvm::AsanDtorKind::Global) ///< Set how ASan global
249 ///< destructors are emitted.
250CODEGENOPT(SanitizeMemoryParamRetval, 1, 0) ///< Enable detection of uninitialized
251 ///< parameters and return values
252 ///< in MemorySanitizer
253CODEGENOPT(SanitizeMemoryUseAfterDtor, 1, 0) ///< Enable use-after-delete detection
254 ///< in MemorySanitizer
255CODEGENOPT(SanitizeCfiCrossDso, 1, 0) ///< Enable cross-dso support in CFI.
256CODEGENOPT(SanitizeMinimalRuntime, 1, 0) ///< Use "_minimal" sanitizer runtime for
257 ///< diagnostics.
258CODEGENOPT(SanitizeCfiICallGeneralizePointers, 1, 0) ///< Generalize pointer types in
259 ///< CFI icall function signatures
260CODEGENOPT(SanitizeCfiICallNormalizeIntegers, 1, 0) ///< Normalize integer types in
261 ///< CFI icall function signatures
262CODEGENOPT(SanitizeCfiCanonicalJumpTables, 1, 0) ///< Make jump table symbols canonical
263 ///< instead of creating a local jump table.
264CODEGENOPT(SanitizeCoverageType, 2, 0) ///< Type of sanitizer coverage
265 ///< instrumentation.
266CODEGENOPT(SanitizeCoverageIndirectCalls, 1, 0) ///< Enable sanitizer coverage
267 ///< for indirect calls.
268CODEGENOPT(SanitizeCoverageTraceBB, 1, 0) ///< Enable basic block tracing in
269 ///< in sanitizer coverage.
270CODEGENOPT(SanitizeCoverageTraceCmp, 1, 0) ///< Enable cmp instruction tracing
271 ///< in sanitizer coverage.
272CODEGENOPT(SanitizeCoverageTraceDiv, 1, 0) ///< Enable div instruction tracing
273 ///< in sanitizer coverage.
274CODEGENOPT(SanitizeCoverageTraceGep, 1, 0) ///< Enable GEP instruction tracing
275 ///< in sanitizer coverage.
276CODEGENOPT(SanitizeCoverage8bitCounters, 1, 0) ///< Use 8-bit frequency counters
277 ///< in sanitizer coverage.
278CODEGENOPT(SanitizeCoverageTracePC, 1, 0) ///< Enable PC tracing
279 ///< in sanitizer coverage.
280CODEGENOPT(SanitizeCoverageTracePCGuard, 1, 0) ///< Enable PC tracing with guard
281 ///< in sanitizer coverage.
282CODEGENOPT(SanitizeCoverageInline8bitCounters, 1, 0) ///< Use inline 8bit counters.
283CODEGENOPT(SanitizeCoverageInlineBoolFlag, 1, 0) ///< Use inline bool flag.
284CODEGENOPT(SanitizeCoveragePCTable, 1, 0) ///< Create a PC Table.
285CODEGENOPT(SanitizeCoverageControlFlow, 1, 0) ///< Collect control flow
286CODEGENOPT(SanitizeCoverageNoPrune, 1, 0) ///< Disable coverage pruning.
287CODEGENOPT(SanitizeCoverageStackDepth, 1, 0) ///< Enable max stack depth tracing
288CODEGENOPT(SanitizeCoverageTraceLoads, 1, 0) ///< Enable tracing of loads.
289CODEGENOPT(SanitizeCoverageTraceStores, 1, 0) ///< Enable tracing of stores.
290CODEGENOPT(SanitizeBinaryMetadataCovered, 1, 0) ///< Emit PCs for covered functions.
291CODEGENOPT(SanitizeBinaryMetadataAtomics, 1, 0) ///< Emit PCs for atomic operations.
292CODEGENOPT(SanitizeBinaryMetadataUAR, 1, 0) ///< Emit PCs for start of functions
293 ///< that are subject for use-after-return checking.
294CODEGENOPT(SanitizeStats , 1, 0) ///< Collect statistics for sanitizers.
295CODEGENOPT(SimplifyLibCalls , 1, 1) ///< Set when -fbuiltin is enabled.
296CODEGENOPT(SoftFloat , 1, 0) ///< -soft-float.
297CODEGENOPT(SpeculativeLoadHardening, 1, 0) ///< Enable speculative load hardening.
298CODEGENOPT(FineGrainedBitfieldAccesses, 1, 0) ///< Enable fine-grained bitfield accesses.
299CODEGENOPT(StrictEnums , 1, 0) ///< Optimize based on strict enum definition.
300CODEGENOPT(StrictVTablePointers, 1, 0) ///< Optimize based on the strict vtable pointers
301CODEGENOPT(TimePasses , 1, 0) ///< Set when -ftime-report or -ftime-report= is enabled.
302CODEGENOPT(TimePassesPerRun , 1, 0) ///< Set when -ftime-report=per-pass-run is enabled.
303CODEGENOPT(TimeTrace , 1, 0) ///< Set when -ftime-trace is enabled.
304VALUE_CODEGENOPT(TimeTraceGranularity, 32, 500) ///< Minimum time granularity (in microseconds),
305 ///< traced by time profiler
306CODEGENOPT(UnrollLoops , 1, 0) ///< Control whether loops are unrolled.
307CODEGENOPT(RerollLoops , 1, 0) ///< Control whether loops are rerolled.
308CODEGENOPT(NoUseJumpTables , 1, 0) ///< Set when -fno-jump-tables is enabled.
309VALUE_CODEGENOPT(UnwindTables, 2, 0) ///< Unwind tables (1) or asynchronous unwind tables (2)
310CODEGENOPT(VectorizeLoop , 1, 0) ///< Run loop vectorizer.
311CODEGENOPT(VectorizeSLP , 1, 0) ///< Run SLP vectorizer.
312CODEGENOPT(ProfileSampleAccurate, 1, 0) ///< Sample profile is accurate.
313
314/// Treat loops as finite: language, always, never.
315ENUM_CODEGENOPT(FiniteLoops, FiniteLoopsKind, 2, FiniteLoopsKind::Language)
316
317 /// Attempt to use register sized accesses to bit-fields in structures, when
318 /// possible.
319CODEGENOPT(UseRegisterSizedBitfieldAccess , 1, 0)
320
321CODEGENOPT(VerifyModule , 1, 1) ///< Control whether the module should be run
322 ///< through the LLVM Verifier.
323CODEGENOPT(VerifyEach , 1, 1) ///< Control whether the LLVM verifier
324 ///< should run after every pass.
325
326CODEGENOPT(StackRealignment , 1, 0) ///< Control whether to force stack
327 ///< realignment.
328CODEGENOPT(UseInitArray , 1, 0) ///< Control whether to use .init_array or
329 ///< .ctors.
330VALUE_CODEGENOPT(LoopAlignment , 32, 0) ///< Overrides default loop
331 ///< alignment, if not 0.
332VALUE_CODEGENOPT(StackAlignment , 32, 0) ///< Overrides default stack
333 ///< alignment, if not 0.
334VALUE_CODEGENOPT(StackProbeSize , 32, 4096) ///< Overrides default stack
335 ///< probe size, even if 0.
336VALUE_CODEGENOPT(WarnStackSize , 32, UINT_MAX) ///< Set via -fwarn-stack-size.
337CODEGENOPT(NoStackArgProbe, 1, 0) ///< Set when -mno-stack-arg-probe is used
338CODEGENOPT(EmitLLVMUseLists, 1, 0) ///< Control whether to serialize use-lists.
339
340CODEGENOPT(WholeProgramVTables, 1, 0) ///< Whether to apply whole-program
341 /// vtable optimization.
342
343CODEGENOPT(VirtualFunctionElimination, 1, 0) ///< Whether to apply the dead
344 /// virtual function elimination
345 /// optimization.
346
347/// Whether to use public LTO visibility for entities in std and stdext
348/// namespaces. This is enabled by clang-cl's /MT and /MTd flags.
349CODEGENOPT(LTOVisibilityPublicStd, 1, 0)
350
351/// The user specified number of registers to be used for integral arguments,
352/// or 0 if unspecified.
353VALUE_CODEGENOPT(NumRegisterParameters, 32, 0)
354
355/// The threshold to put data into small data section.
356VALUE_CODEGENOPT(SmallDataLimit, 32, 0)
357
358/// The lower bound for a buffer to be considered for stack protection.
359VALUE_CODEGENOPT(SSPBufferSize, 32, 0)
360
361/// The kind of inlining to perform.
362ENUM_CODEGENOPT(Inlining, InliningMethod, 2, NormalInlining)
363
364/// The maximum stack size a function can have to be considered for inlining.
365VALUE_CODEGENOPT(InlineMaxStackSize, 32, UINT_MAX)
366
367// Vector functions library to use.
368ENUM_CODEGENOPT(VecLib, llvm::driver::VectorLibrary, 3, llvm::driver::VectorLibrary::NoLibrary)
369
370/// The default TLS model to use.
371ENUM_CODEGENOPT(DefaultTLSModel, TLSModel, 2, GeneralDynamicTLSModel)
372
373/// Whether to enable TLSDESC. AArch64 enables TLSDESC regardless of this value.
374CODEGENOPT(EnableTLSDESC, 1, 0)
375
376/// Bit size of immediate TLS offsets (0 == use the default).
377VALUE_CODEGENOPT(TLSSize, 8, 0)
378
379/// The default stack protector guard offset to use.
380VALUE_CODEGENOPT(StackProtectorGuardOffset, 32, INT_MAX)
381
382/// Number of path components to strip when emitting checks. (0 == full
383/// filename)
384VALUE_CODEGENOPT(EmitCheckPathComponentsToStrip, 32, 0)
385
386/// Whether to report the hotness of the code region for optimization remarks.
387CODEGENOPT(DiagnosticsWithHotness, 1, 0)
388
389/// Whether to use direct access relocations (instead of GOT) to reference external data symbols.
390CODEGENOPT(DirectAccessExternalData, 1, 0)
391
392/// Whether we should use the undefined behaviour optimization for control flow
393/// paths that reach the end of a function without executing a required return.
394CODEGENOPT(StrictReturn, 1, 1)
395
396/// Whether emit pseudo probes for sample pgo profile collection.
397CODEGENOPT(PseudoProbeForProfiling, 1, 0)
398
399/// Whether 3-component vector type is preserved.
400CODEGENOPT(PreserveVec3Type, 1, 0)
401
402CODEGENOPT(NoPLT, 1, 0)
403
404/// Whether to emit all vtables
405CODEGENOPT(ForceEmitVTables, 1, 0)
406
407/// Whether to emit an address-significance table into the object file.
408CODEGENOPT(Addrsig, 1, 0)
409
410/// Whether to emit unused static constants.
411CODEGENOPT(KeepStaticConsts, 1, 0)
412
413/// Whether to emit all variables that have a persistent storage duration,
414/// including global, static and thread local variables.
415CODEGENOPT(KeepPersistentStorageVariables, 1, 0)
416
417/// Whether to follow the AAPCS enforcing at least one read before storing to a volatile bitfield
418CODEGENOPT(ForceAAPCSBitfieldLoad, 1, 0)
419
420/// Assume that by-value parameters do not alias any other values.
421CODEGENOPT(PassByValueIsNoAlias, 1, 0)
422
423/// Whether to not follow the AAPCS that enforces volatile bit-field access width to be
424/// according to the field declaring type width.
425CODEGENOPT(AAPCSBitfieldWidth, 1, 1)
426
427/// Sets the IEEE bit in the expected default floating point mode register.
428/// Floating point opcodes that support exception flag gathering quiet and
429/// propagate signaling NaN inputs per IEEE 754-2008 (AMDGPU Only)
430CODEGENOPT(EmitIEEENaNCompliantInsts, 1, 1)
431
432// Whether to emit Swift Async function extended frame information: auto,
433// never, always.
434ENUM_CODEGENOPT(SwiftAsyncFramePointer, SwiftAsyncFramePointerKind, 2,
435 SwiftAsyncFramePointerKind::Always)
436
437/// Whether to skip RAX setup when passing variable arguments (x86 only).
438CODEGENOPT(SkipRaxSetup, 1, 0)
439
440/// Whether to zero out caller-used registers before returning.
441ENUM_CODEGENOPT(ZeroCallUsedRegs, llvm::ZeroCallUsedRegs::ZeroCallUsedRegsKind,
442 5, llvm::ZeroCallUsedRegs::ZeroCallUsedRegsKind::Skip)
443
444/// Modify C++ ABI to returning `this` pointer from constructors and
445/// non-deleting destructors. (No effect on Microsoft ABI.)
446CODEGENOPT(CtorDtorReturnThis, 1, 0)
447
448/// FIXME: Make DebugOptions its own top-level .def file.
449#include "DebugOptions.def"
450
451#undef CODEGENOPT
452#undef ENUM_CODEGENOPT
453#undef VALUE_CODEGENOPT
454#undef AFFECTING_VALUE_CODEGENOPT
455

source code of clang/include/clang/Basic/CodeGenOptions.def