1 //===--- LangOptions.def - Language 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 language options. Users of this file must
11 // define the LANGOPT macro to make use of this information.
13 // Optionally, the user may also define:
15 // BENIGN_LANGOPT: for options that don't affect the construction of the AST in
16 // any way (that is, the value can be different between an implicit module
17 // and the user of that module).
19 // COMPATIBLE_LANGOPT: for options that affect the construction of the AST in
20 // a way that doesn't prevent interoperability (that is, the value can be
21 // different between an explicit module and the user of that module).
23 // ENUM_LANGOPT: for options that have enumeration, rather than unsigned, type.
25 // VALUE_LANGOPT: for options that describe a value rather than a flag.
27 // BENIGN_ENUM_LANGOPT, COMPATIBLE_ENUM_LANGOPT,
28 // BENIGN_VALUE_LANGOPT, COMPATIBLE_VALUE_LANGOPT: combinations of the above.
30 // FIXME: Clients should be able to more easily select whether they want
31 // different levels of compatibility versus how to handle different kinds
34 // The Description field should be a noun phrase, for instance "frobbing all
35 // widgets" or "C's implicit blintz feature".
36 //===----------------------------------------------------------------------===//
39 # error Define the LANGOPT macro to handle language options
42 #ifndef COMPATIBLE_LANGOPT
43 # define COMPATIBLE_LANGOPT(Name, Bits, Default, Description) \
44 LANGOPT(Name, Bits, Default, Description)
47 #ifndef BENIGN_LANGOPT
48 # define BENIGN_LANGOPT(Name, Bits, Default, Description) \
49 COMPATIBLE_LANGOPT(Name, Bits, Default, Description)
53 # define ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
54 LANGOPT(Name, Bits, Default, Description)
57 #ifndef COMPATIBLE_ENUM_LANGOPT
58 # define COMPATIBLE_ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
59 ENUM_LANGOPT(Name, Type, Bits, Default, Description)
62 #ifndef BENIGN_ENUM_LANGOPT
63 # define BENIGN_ENUM_LANGOPT(Name, Type, Bits, Default, Description) \
64 COMPATIBLE_ENUM_LANGOPT(Name, Type, Bits, Default, Description)
68 # define VALUE_LANGOPT(Name, Bits, Default, Description) \
69 LANGOPT(Name, Bits, Default, Description)
72 #ifndef COMPATIBLE_VALUE_LANGOPT
73 # define COMPATIBLE_VALUE_LANGOPT(Name, Bits, Default, Description) \
74 VALUE_LANGOPT(Name, Bits, Default, Description)
77 #ifndef BENIGN_VALUE_LANGOPT
78 # define BENIGN_VALUE_LANGOPT(Name, Bits, Default, Description) \
79 COMPATIBLE_VALUE_LANGOPT(Name, Bits, Default, Description)
82 // FIXME: A lot of the BENIGN_ options should be COMPATIBLE_ instead.
83 LANGOPT(C99 , 1, 0, "C99")
84 LANGOPT(C11 , 1, 0, "C11")
85 LANGOPT(C17 , 1, 0, "C17")
86 LANGOPT(MSVCCompat , 1, 0, "Microsoft Visual C++ full compatibility mode")
87 LANGOPT(MicrosoftExt , 1, 0, "Microsoft C++ extensions")
88 LANGOPT(AsmBlocks , 1, 0, "Microsoft inline asm blocks")
89 LANGOPT(Borland , 1, 0, "Borland extensions")
90 LANGOPT(CPlusPlus , 1, 0, "C++")
91 LANGOPT(CPlusPlus11 , 1, 0, "C++11")
92 LANGOPT(CPlusPlus14 , 1, 0, "C++14")
93 LANGOPT(CPlusPlus17 , 1, 0, "C++17")
94 LANGOPT(CPlusPlus2a , 1, 0, "C++2a")
95 LANGOPT(ObjC , 1, 0, "Objective-C")
96 BENIGN_LANGOPT(ObjCDefaultSynthProperties , 1, 0,
97 "Objective-C auto-synthesized properties")
98 BENIGN_LANGOPT(EncodeExtendedBlockSig , 1, 0,
99 "Encoding extended block type signature")
100 BENIGN_LANGOPT(ObjCInferRelatedResultType , 1, 1,
101 "Objective-C related result type inference")
102 LANGOPT(AppExt , 1, 0, "Objective-C App Extension")
103 LANGOPT(Trigraphs , 1, 0,"trigraphs")
104 LANGOPT(LineComment , 1, 0, "'//' comments")
105 LANGOPT(Bool , 1, 0, "bool, true, and false keywords")
106 LANGOPT(Half , 1, 0, "half keyword")
107 LANGOPT(WChar , 1, CPlusPlus, "wchar_t keyword")
108 LANGOPT(Char8 , 1, 0, "char8_t keyword")
109 LANGOPT(DeclSpecKeyword , 1, 0, "__declspec keyword")
110 BENIGN_LANGOPT(DollarIdents , 1, 1, "'$' in identifiers")
111 BENIGN_LANGOPT(AsmPreprocessor, 1, 0, "preprocessor in asm mode")
112 LANGOPT(GNUMode , 1, 1, "GNU extensions")
113 LANGOPT(GNUKeywords , 1, 1, "GNU keywords")
114 BENIGN_LANGOPT(ImplicitInt, 1, !C99 && !CPlusPlus, "C89 implicit 'int'")
115 LANGOPT(Digraphs , 1, 0, "digraphs")
116 BENIGN_LANGOPT(HexFloats , 1, C99, "C99 hexadecimal float constants")
117 LANGOPT(CXXOperatorNames , 1, 0, "C++ operator name keywords")
118 LANGOPT(AppleKext , 1, 0, "Apple kext support")
119 BENIGN_LANGOPT(PascalStrings, 1, 0, "Pascal string support")
120 LANGOPT(WritableStrings , 1, 0, "writable string support")
121 LANGOPT(ConstStrings , 1, 0, "const-qualified string support")
122 LANGOPT(LaxVectorConversions , 1, 1, "lax vector conversions")
123 LANGOPT(AltiVec , 1, 0, "AltiVec-style vector initializers")
124 LANGOPT(ZVector , 1, 0, "System z vector extensions")
125 LANGOPT(Exceptions , 1, 0, "exception handling")
126 LANGOPT(ObjCExceptions , 1, 0, "Objective-C exceptions")
127 LANGOPT(CXXExceptions , 1, 0, "C++ exceptions")
128 LANGOPT(DWARFExceptions , 1, 0, "dwarf exception handling")
129 LANGOPT(SjLjExceptions , 1, 0, "setjmp-longjump exception handling")
130 LANGOPT(SEHExceptions , 1, 0, "SEH .xdata exception handling")
131 LANGOPT(ExternCNoUnwind , 1, 0, "Assume extern C functions don't unwind")
132 LANGOPT(TraditionalCPP , 1, 0, "traditional CPP emulation")
133 LANGOPT(RTTI , 1, 1, "run-time type information")
134 LANGOPT(RTTIData , 1, 1, "emit run-time type information data")
135 LANGOPT(MSBitfields , 1, 0, "Microsoft-compatible structure layout")
136 LANGOPT(Freestanding, 1, 0, "freestanding implementation")
137 LANGOPT(NoBuiltin , 1, 0, "disable builtin functions")
138 LANGOPT(NoMathBuiltin , 1, 0, "disable math builtin functions")
139 LANGOPT(GNUAsm , 1, 1, "GNU-style inline assembly")
140 LANGOPT(CoroutinesTS , 1, 0, "C++ coroutines TS")
141 LANGOPT(DllExportInlines , 1, 1, "dllexported classes dllexport inline methods")
142 LANGOPT(RelaxedTemplateTemplateArgs, 1, 0, "C++17 relaxed matching of template template arguments")
144 LANGOPT(DoubleSquareBracketAttributes, 1, 0, "'[[]]' attributes extension for all language standard modes")
146 BENIGN_LANGOPT(ThreadsafeStatics , 1, 1, "thread-safe static initializers")
147 LANGOPT(POSIXThreads , 1, 0, "POSIX thread support")
148 LANGOPT(Blocks , 1, 0, "blocks extension to C")
149 BENIGN_LANGOPT(EmitAllDecls , 1, 0, "emitting all declarations")
150 LANGOPT(MathErrno , 1, 1, "errno in math functions")
151 BENIGN_LANGOPT(HeinousExtensions , 1, 0, "extensions that we really don't like and may be ripped out at any time")
152 LANGOPT(Modules , 1, 0, "modules extension to C")
153 COMPATIBLE_LANGOPT(ModulesTS , 1, 0, "C++ Modules TS")
154 BENIGN_ENUM_LANGOPT(CompilingModule, CompilingModuleKind, 2, CMK_None,
155 "compiling a module interface")
156 BENIGN_LANGOPT(CompilingPCH, 1, 0, "building a pch")
157 BENIGN_LANGOPT(BuildingPCHWithObjectFile, 1, 0, "building a pch which has a corresponding object file")
158 COMPATIBLE_LANGOPT(ModulesDeclUse , 1, 0, "require declaration of module uses")
159 BENIGN_LANGOPT(ModulesSearchAll , 1, 1, "searching even non-imported modules to find unresolved references")
160 COMPATIBLE_LANGOPT(ModulesStrictDeclUse, 1, 0, "requiring declaration of module uses and all headers to be in modules")
161 BENIGN_LANGOPT(ModulesErrorRecovery, 1, 1, "automatically importing modules as needed when performing error recovery")
162 BENIGN_LANGOPT(ImplicitModules, 1, 1, "building modules that are not specified via -fmodule-file")
163 COMPATIBLE_LANGOPT(ModulesLocalVisibility, 1, 0, "local submodule visibility")
164 COMPATIBLE_LANGOPT(Optimize , 1, 0, "__OPTIMIZE__ predefined macro")
165 COMPATIBLE_LANGOPT(OptimizeSize , 1, 0, "__OPTIMIZE_SIZE__ predefined macro")
166 COMPATIBLE_LANGOPT(Static , 1, 0, "__STATIC__ predefined macro (as opposed to __DYNAMIC__)")
167 VALUE_LANGOPT(PackStruct , 32, 0,
168 "default struct packing maximum alignment")
169 VALUE_LANGOPT(MaxTypeAlign , 32, 0,
170 "default maximum alignment for types")
171 VALUE_LANGOPT(AlignDouble , 1, 0, "Controls if doubles should be aligned to 8 bytes (x86 only)")
172 COMPATIBLE_VALUE_LANGOPT(PICLevel , 2, 0, "__PIC__ level")
173 COMPATIBLE_VALUE_LANGOPT(PIE , 1, 0, "is pie")
174 COMPATIBLE_LANGOPT(GNUInline , 1, 0, "GNU inline semantics")
175 COMPATIBLE_LANGOPT(NoInlineDefine , 1, 0, "__NO_INLINE__ predefined macro")
176 COMPATIBLE_LANGOPT(Deprecated , 1, 0, "__DEPRECATED predefined macro")
177 COMPATIBLE_LANGOPT(FastMath , 1, 0, "fast FP math optimizations, and __FAST_MATH__ predefined macro")
178 COMPATIBLE_LANGOPT(FiniteMathOnly , 1, 0, "__FINITE_MATH_ONLY__ predefined macro")
179 COMPATIBLE_LANGOPT(UnsafeFPMath , 1, 0, "Unsafe Floating Point Math")
181 BENIGN_LANGOPT(ObjCGCBitmapPrint , 1, 0, "printing of GC's bitmap layout for __weak/__strong ivars")
183 BENIGN_LANGOPT(AccessControl , 1, 1, "C++ access control")
184 LANGOPT(CharIsSigned , 1, 1, "signed char")
185 LANGOPT(WCharSize , 4, 0, "width of wchar_t")
186 LANGOPT(WCharIsSigned , 1, 0, "signed or unsigned wchar_t")
187 ENUM_LANGOPT(MSPointerToMemberRepresentationMethod, PragmaMSPointersToMembersKind, 2, PPTMK_BestCase, "member-pointer representation method")
188 ENUM_LANGOPT(DefaultCallingConv, DefaultCallingConvention, 3, DCC_None, "default calling convention")
190 LANGOPT(ShortEnums , 1, 0, "short enum types")
192 LANGOPT(OpenCL , 1, 0, "OpenCL")
193 LANGOPT(OpenCLVersion , 32, 0, "OpenCL C version")
194 LANGOPT(OpenCLCPlusPlus , 1, 0, "OpenCL C++")
195 LANGOPT(OpenCLCPlusPlusVersion , 32, 0, "OpenCL C++ version")
196 LANGOPT(NativeHalfType , 1, 0, "Native half type support")
197 LANGOPT(NativeHalfArgsAndReturns, 1, 0, "Native half args and returns")
198 LANGOPT(HalfArgsAndReturns, 1, 0, "half args and returns")
199 LANGOPT(CUDA , 1, 0, "CUDA")
200 LANGOPT(HIP , 1, 0, "HIP")
201 LANGOPT(OpenMP , 32, 0, "OpenMP support and version of OpenMP (31, 40 or 45)")
202 LANGOPT(OpenMPSimd , 1, 0, "Use SIMD only OpenMP support.")
203 LANGOPT(OpenMPUseTLS , 1, 0, "Use TLS for threadprivates or runtime calls")
204 LANGOPT(OpenMPIsDevice , 1, 0, "Generate code only for OpenMP target device")
205 LANGOPT(OpenMPCUDAMode , 1, 0, "Generate code for OpenMP pragmas in SIMT/SPMD mode")
206 LANGOPT(OpenMPCUDAForceFullRuntime , 1, 0, "Force to use full runtime in all constructs when offloading to CUDA devices")
207 LANGOPT(OpenMPHostCXXExceptions , 1, 0, "C++ exceptions handling in the host code.")
208 LANGOPT(OpenMPCUDANumSMs , 32, 0, "Number of SMs for CUDA devices.")
209 LANGOPT(OpenMPCUDABlocksPerSM , 32, 0, "Number of blocks per SM for CUDA devices.")
210 LANGOPT(OpenMPOptimisticCollapse , 1, 0, "Use at most 32 bits to represent the collapsed loop nest counter.")
211 LANGOPT(RenderScript , 1, 0, "RenderScript")
213 LANGOPT(CUDAIsDevice , 1, 0, "compiling for CUDA device")
214 LANGOPT(CUDAAllowVariadicFunctions, 1, 0, "allowing variadic functions in CUDA device code")
215 LANGOPT(CUDAHostDeviceConstexpr, 1, 1, "treating unattributed constexpr functions as __host__ __device__")
216 LANGOPT(CUDADeviceApproxTranscendentals, 1, 0, "using approximate transcendental functions")
217 LANGOPT(GPURelocatableDeviceCode, 1, 0, "generate relocatable device code")
219 LANGOPT(SizedDeallocation , 1, 0, "sized deallocation")
220 LANGOPT(AlignedAllocation , 1, 0, "aligned allocation")
221 LANGOPT(AlignedAllocationUnavailable, 1, 0, "aligned allocation functions are unavailable")
222 LANGOPT(NewAlignOverride , 32, 0, "maximum alignment guaranteed by '::operator new(size_t)'")
223 LANGOPT(ConceptsTS , 1, 0, "enable C++ Extensions for Concepts")
224 BENIGN_LANGOPT(ModulesCodegen , 1, 0, "Modules code generation")
225 BENIGN_LANGOPT(ModulesDebugInfo , 1, 0, "Modules debug info")
226 BENIGN_LANGOPT(ElideConstructors , 1, 1, "C++ copy constructor elision")
227 BENIGN_LANGOPT(DumpRecordLayouts , 1, 0, "dumping the layout of IRgen'd records")
228 BENIGN_LANGOPT(DumpRecordLayoutsSimple , 1, 0, "dumping the layout of IRgen'd records in a simple form")
229 BENIGN_LANGOPT(DumpVTableLayouts , 1, 0, "dumping the layouts of emitted vtables")
230 LANGOPT(NoConstantCFStrings , 1, 0, "no constant CoreFoundation strings")
231 BENIGN_LANGOPT(InlineVisibilityHidden , 1, 0, "hidden visibility for inline C++ methods")
232 LANGOPT(GlobalAllocationFunctionVisibilityHidden , 1, 0, "hidden visibility for global operator new and delete declaration")
233 BENIGN_LANGOPT(ParseUnknownAnytype, 1, 0, "__unknown_anytype")
234 BENIGN_LANGOPT(DebuggerSupport , 1, 0, "debugger support")
235 BENIGN_LANGOPT(DebuggerCastResultToId, 1, 0, "for 'po' in the debugger, cast the result to id if it is of unknown type")
236 BENIGN_LANGOPT(DebuggerObjCLiteral , 1, 0, "debugger Objective-C literals and subscripting support")
238 BENIGN_LANGOPT(SpellChecking , 1, 1, "spell-checking")
239 LANGOPT(SinglePrecisionConstants , 1, 0, "treating double-precision floating point constants as single precision constants")
240 LANGOPT(FastRelaxedMath , 1, 0, "OpenCL fast relaxed math")
241 /// FP_CONTRACT mode (on/off/fast).
242 ENUM_LANGOPT(DefaultFPContractMode, FPContractModeKind, 2, FPC_Off, "FP contraction type")
243 LANGOPT(NoBitFieldTypeAlign , 1, 0, "bit-field type alignment")
244 LANGOPT(HexagonQdsp6Compat , 1, 0, "hexagon-qdsp6 backward compatibility")
245 LANGOPT(ObjCAutoRefCount , 1, 0, "Objective-C automated reference counting")
246 LANGOPT(ObjCWeakRuntime , 1, 0, "__weak support in the ARC runtime")
247 LANGOPT(ObjCWeak , 1, 0, "Objective-C __weak in ARC and MRC files")
248 LANGOPT(ObjCSubscriptingLegacyRuntime , 1, 0, "Subscripting support in legacy ObjectiveC runtime")
249 LANGOPT(CFProtectionBranch , 1, 0, "Control-Flow Branch Protection enabled")
250 LANGOPT(FakeAddressSpaceMap , 1, 0, "OpenCL fake address space map")
251 ENUM_LANGOPT(AddressSpaceMapMangling , AddrSpaceMapMangling, 2, ASMM_Target, "OpenCL address space map mangling mode")
252 LANGOPT(IncludeDefaultHeader, 1, 0, "Include default header file for OpenCL")
253 BENIGN_LANGOPT(DelayedTemplateParsing , 1, 0, "delayed template parsing")
254 LANGOPT(BlocksRuntimeOptional , 1, 0, "optional blocks runtime")
256 CompleteMemberPointers, 1, 0,
257 "Require member pointer base types to be complete at the point where the "
258 "type's inheritance model would be determined under the Microsoft ABI")
260 ENUM_LANGOPT(GC, GCMode, 2, NonGC, "Objective-C Garbage Collection mode")
261 ENUM_LANGOPT(ValueVisibilityMode, Visibility, 3, DefaultVisibility,
262 "value symbol visibility")
263 ENUM_LANGOPT(TypeVisibilityMode, Visibility, 3, DefaultVisibility,
264 "type symbol visibility")
265 ENUM_LANGOPT(StackProtector, StackProtectorMode, 2, SSPOff,
266 "stack protector mode")
267 ENUM_LANGOPT(TrivialAutoVarInit, TrivialAutoVarInitKind, 2, TrivialAutoVarInitKind::Uninitialized,
268 "trivial automatic variable initialization")
269 ENUM_LANGOPT(SignedOverflowBehavior, SignedOverflowBehaviorTy, 2, SOB_Undefined,
270 "signed integer overflow handling")
272 BENIGN_LANGOPT(ArrowDepth, 32, 256,
273 "maximum number of operator->s to follow")
274 BENIGN_LANGOPT(InstantiationDepth, 32, 1024,
275 "maximum template instantiation depth")
276 BENIGN_LANGOPT(ConstexprCallDepth, 32, 512,
277 "maximum constexpr call depth")
278 BENIGN_LANGOPT(ConstexprStepLimit, 32, 1048576,
279 "maximum constexpr evaluation steps")
280 BENIGN_LANGOPT(BracketDepth, 32, 256,
281 "maximum bracket nesting depth")
282 BENIGN_LANGOPT(NumLargeByValueCopy, 32, 0,
283 "if non-zero, warn about parameter or return Warn if parameter/return value is larger in bytes than this setting. 0 is no check.")
284 VALUE_LANGOPT(MSCompatibilityVersion, 32, 0, "Microsoft Visual C/C++ Version")
285 VALUE_LANGOPT(VtorDispMode, 2, 1, "How many vtordisps to insert")
287 LANGOPT(ApplePragmaPack, 1, 0, "Apple gcc-compatible #pragma pack handling")
289 LANGOPT(RetainCommentsFromSystemHeaders, 1, 0, "retain documentation comments from system headers in the AST")
291 LANGOPT(SanitizeAddressFieldPadding, 2, 0, "controls how aggressive is ASan "
292 "field padding (0: none, 1:least "
293 "aggressive, 2: more aggressive)")
295 LANGOPT(XRayInstrument, 1, 0, "controls whether to do XRay instrumentation")
296 LANGOPT(XRayAlwaysEmitCustomEvents, 1, 0,
297 "controls whether to always emit intrinsic calls to "
298 "__xray_customevent(...) builtin.")
299 LANGOPT(XRayAlwaysEmitTypedEvents, 1, 0,
300 "controls whether to always emit intrinsic calls to "
301 "__xray_typedevent(...) builtin.")
303 LANGOPT(ForceEmitVTables, 1, 0, "whether to emit all vtables")
305 BENIGN_LANGOPT(AllowEditorPlaceholders, 1, 0,
306 "allow editor placeholders in source")
308 ENUM_LANGOPT(ClangABICompat, ClangABI, 4, ClangABI::Latest,
309 "version of Clang that we should attempt to be ABI-compatible "
312 COMPATIBLE_VALUE_LANGOPT(FunctionAlignment, 5, 0, "Default alignment for functions")
314 LANGOPT(FixedPoint, 1, 0, "fixed point types")
315 LANGOPT(PaddingOnUnsignedFixedPoint, 1, 0,
316 "unsigned fixed point types having one extra padding bit")
318 LANGOPT(RegisterStaticDestructors, 1, 1, "Register C++ static destructors")
321 #undef COMPATIBLE_LANGOPT
322 #undef BENIGN_LANGOPT
324 #undef COMPATIBLE_ENUM_LANGOPT
325 #undef BENIGN_ENUM_LANGOPT
327 #undef COMPATIBLE_VALUE_LANGOPT
328 #undef BENIGN_VALUE_LANGOPT