xref: /llvm-project/clang/include/clang/Basic/Features.def (revision c135f6ffe2542bdde5a2a3e1d6515a6fc7031967) 
1//===--- Features.def - Features and Extensions 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 features exposed via __has_feature and extensions exposed
10// via __has_extension. Users of this file must either define the FEATURE or
11// EXTENSION macros (or both) to make use of this information. Note that these
12// macros expect the following declarations to be available for the Predicate:
13//
14//   const LangOptions &LangOpts;
15//   const Preprocessor &PP;
16//
17// The Predicate field dictates the conditions under which the feature or
18// extension will be made available.
19//
20// FEATURE(...) should be used to advertise support for standard language
21// features, whereas EXTENSION(...) should be used for clang extensions. Note
22// that many of the identifiers in this file don't follow this rule for backward
23// compatibility reasons.
24//
25//===----------------------------------------------------------------------===//
26
27#if !defined(FEATURE) && !defined(EXTENSION)
28#  error Define either the FEATURE or EXTENSION macro to handle features
29#endif
30
31#ifndef FEATURE
32#define FEATURE(Name, Predicate)
33#endif
34
35#ifndef EXTENSION
36#define EXTENSION(Name, Predicate)
37#endif
38
39FEATURE(speculative_load_hardening, LangOpts.SpeculativeLoadHardening)
40FEATURE(address_sanitizer,
41        LangOpts.Sanitize.hasOneOf(SanitizerKind::Address |
42                                   SanitizerKind::KernelAddress))
43FEATURE(leak_sanitizer,
44        LangOpts.Sanitize.has(SanitizerKind::Leak))
45FEATURE(hwaddress_sanitizer,
46        LangOpts.Sanitize.hasOneOf(SanitizerKind::HWAddress |
47                                   SanitizerKind::KernelHWAddress))
48FEATURE(memtag_stack,
49        LangOpts.Sanitize.has(SanitizerKind::MemtagStack))
50FEATURE(memtag_heap,
51        LangOpts.Sanitize.has(SanitizerKind::MemtagHeap))
52FEATURE(memtag_globals,
53        LangOpts.Sanitize.has(SanitizerKind::MemtagGlobals))
54FEATURE(xray_instrument, LangOpts.XRayInstrument)
55FEATURE(undefined_behavior_sanitizer,
56        LangOpts.Sanitize.hasOneOf(SanitizerKind::Undefined))
57FEATURE(realtime_sanitizer,
58        LangOpts.Sanitize.has(SanitizerKind::Realtime))
59FEATURE(coverage_sanitizer, LangOpts.SanitizeCoverage)
60FEATURE(assume_nonnull, true)
61FEATURE(attribute_analyzer_noreturn, true)
62FEATURE(attribute_availability, true)
63FEATURE(attribute_availability_with_message, true)
64FEATURE(attribute_availability_app_extension, true)
65FEATURE(attribute_availability_with_version_underscores, true)
66FEATURE(attribute_availability_tvos, true)
67FEATURE(attribute_availability_watchos, true)
68FEATURE(attribute_availability_driverkit, true)
69FEATURE(attribute_availability_with_strict, true)
70FEATURE(attribute_availability_with_replacement, true)
71FEATURE(attribute_availability_in_templates, true)
72FEATURE(attribute_availability_swift, true)
73FEATURE(attribute_cf_returns_not_retained, true)
74FEATURE(attribute_cf_returns_retained, true)
75FEATURE(attribute_cf_returns_on_parameters, true)
76FEATURE(attribute_deprecated_with_message, true)
77FEATURE(attribute_deprecated_with_replacement, true)
78FEATURE(attribute_ext_vector_type, true)
79FEATURE(attribute_ns_returns_not_retained, true)
80FEATURE(attribute_ns_returns_retained, true)
81FEATURE(attribute_ns_consumes_self, true)
82FEATURE(attribute_ns_consumed, true)
83FEATURE(attribute_cf_consumed, true)
84FEATURE(attribute_objc_ivar_unused, true)
85FEATURE(attribute_objc_method_family, true)
86FEATURE(attribute_overloadable, true)
87FEATURE(attribute_unavailable_with_message, true)
88FEATURE(attribute_unused_on_fields, true)
89FEATURE(attribute_diagnose_if_objc, true)
90FEATURE(blocks, LangOpts.Blocks)
91FEATURE(c_thread_safety_attributes, true)
92FEATURE(cxx_exceptions, LangOpts.CXXExceptions)
93FEATURE(cxx_rtti, LangOpts.RTTI &&LangOpts.RTTIData)
94EXTENSION(define_target_os_macros,
95          PP.getPreprocessorOpts().DefineTargetOSMacros)
96FEATURE(enumerator_attributes, true)
97FEATURE(nullability, true)
98FEATURE(nullability_on_arrays, true)
99FEATURE(nullability_on_classes, true)
100FEATURE(nullability_nullable_result, true)
101FEATURE(numerical_stability_sanitizer, LangOpts.Sanitize.has(SanitizerKind::NumericalStability))
102FEATURE(memory_sanitizer,
103        LangOpts.Sanitize.hasOneOf(SanitizerKind::Memory |
104                                   SanitizerKind::KernelMemory))
105FEATURE(type_sanitizer, LangOpts.Sanitize.has(SanitizerKind::Type))
106FEATURE(thread_sanitizer, LangOpts.Sanitize.has(SanitizerKind::Thread))
107FEATURE(dataflow_sanitizer, LangOpts.Sanitize.has(SanitizerKind::DataFlow))
108FEATURE(scudo, LangOpts.Sanitize.hasOneOf(SanitizerKind::Scudo))
109FEATURE(ptrauth_intrinsics, LangOpts.PointerAuthIntrinsics)
110FEATURE(ptrauth_calls, LangOpts.PointerAuthCalls)
111FEATURE(ptrauth_returns, LangOpts.PointerAuthReturns)
112FEATURE(ptrauth_vtable_pointer_address_discrimination, LangOpts.PointerAuthVTPtrAddressDiscrimination)
113FEATURE(ptrauth_vtable_pointer_type_discrimination, LangOpts.PointerAuthVTPtrTypeDiscrimination)
114FEATURE(ptrauth_type_info_vtable_pointer_discrimination, LangOpts.PointerAuthTypeInfoVTPtrDiscrimination)
115FEATURE(ptrauth_member_function_pointer_type_discrimination, LangOpts.PointerAuthCalls)
116FEATURE(ptrauth_function_pointer_type_discrimination, LangOpts.PointerAuthFunctionTypeDiscrimination)
117FEATURE(ptrauth_indirect_gotos, LangOpts.PointerAuthIndirectGotos)
118FEATURE(ptrauth_init_fini, LangOpts.PointerAuthInitFini)
119FEATURE(ptrauth_init_fini_address_discrimination, LangOpts.PointerAuthInitFiniAddressDiscrimination)
120FEATURE(ptrauth_elf_got, LangOpts.PointerAuthELFGOT)
121EXTENSION(swiftcc,
122  PP.getTargetInfo().checkCallingConvention(CC_Swift) ==
123  clang::TargetInfo::CCCR_OK)
124EXTENSION(swiftasynccc,
125  PP.getTargetInfo().checkCallingConvention(CC_SwiftAsync) ==
126  clang::TargetInfo::CCCR_OK)
127FEATURE(pragma_stdc_cx_limited_range, true)
128// Objective-C features
129FEATURE(objc_arr, LangOpts.ObjCAutoRefCount) // FIXME: REMOVE?
130FEATURE(objc_arc, LangOpts.ObjCAutoRefCount)
131FEATURE(objc_arc_fields, true)
132FEATURE(objc_arc_weak, LangOpts.ObjCWeak)
133FEATURE(objc_default_synthesize_properties, LangOpts.ObjC)
134FEATURE(objc_fixed_enum, LangOpts.ObjC)
135FEATURE(objc_instancetype, LangOpts.ObjC)
136FEATURE(objc_kindof, LangOpts.ObjC)
137FEATURE(objc_modules, LangOpts.ObjC && LangOpts.Modules)
138FEATURE(objc_nonfragile_abi, LangOpts.ObjCRuntime.isNonFragile())
139FEATURE(objc_property_explicit_atomic, true)
140FEATURE(objc_protocol_qualifier_mangling, true)
141FEATURE(objc_weak_class, LangOpts.ObjCRuntime.hasWeakClassImport())
142FEATURE(ownership_holds, true)
143FEATURE(ownership_returns, true)
144FEATURE(ownership_takes, true)
145FEATURE(objc_bool, true)
146FEATURE(objc_subscripting, LangOpts.ObjCRuntime.isNonFragile())
147FEATURE(objc_array_literals, LangOpts.ObjC)
148FEATURE(objc_dictionary_literals, LangOpts.ObjC)
149FEATURE(objc_boxed_expressions, LangOpts.ObjC)
150FEATURE(objc_boxed_nsvalue_expressions, LangOpts.ObjC)
151FEATURE(arc_cf_code_audited, true)
152FEATURE(objc_bridge_id, true)
153FEATURE(objc_bridge_id_on_typedefs, true)
154FEATURE(objc_generics, LangOpts.ObjC)
155FEATURE(objc_generics_variance, LangOpts.ObjC)
156FEATURE(objc_class_property, LangOpts.ObjC)
157FEATURE(objc_c_static_assert, LangOpts.C11)
158FEATURE(objc_cxx_static_assert, LangOpts.CPlusPlus11)
159EXTENSION(objc_c_static_assert, true)
160// C11 features
161FEATURE(c_alignas, LangOpts.C11)
162FEATURE(c_alignof, LangOpts.C11)
163FEATURE(c_atomic, LangOpts.C11)
164FEATURE(c_generic_selections, LangOpts.C11)
165FEATURE(c_static_assert, LangOpts.C11)
166FEATURE(c_thread_local, LangOpts.C11 &&PP.getTargetInfo().isTLSSupported())
167// C23 features
168FEATURE(c_fixed_enum, LangOpts.C23)
169// C++11 features
170FEATURE(cxx_access_control_sfinae, LangOpts.CPlusPlus11)
171FEATURE(cxx_alias_templates, LangOpts.CPlusPlus11)
172FEATURE(cxx_alignas, LangOpts.CPlusPlus11)
173FEATURE(cxx_alignof, LangOpts.CPlusPlus11)
174FEATURE(cxx_atomic, LangOpts.CPlusPlus11)
175FEATURE(cxx_attributes, LangOpts.CPlusPlus11)
176FEATURE(cxx_auto_type, LangOpts.CPlusPlus11)
177FEATURE(cxx_constexpr, LangOpts.CPlusPlus11)
178FEATURE(cxx_constexpr_string_builtins, LangOpts.CPlusPlus11)
179FEATURE(cxx_decltype, LangOpts.CPlusPlus11)
180FEATURE(cxx_decltype_incomplete_return_types, LangOpts.CPlusPlus11)
181FEATURE(cxx_default_function_template_args, LangOpts.CPlusPlus11)
182FEATURE(cxx_defaulted_functions, LangOpts.CPlusPlus11)
183FEATURE(cxx_delegating_constructors, LangOpts.CPlusPlus11)
184FEATURE(cxx_deleted_functions, LangOpts.CPlusPlus11)
185FEATURE(cxx_explicit_conversions, LangOpts.CPlusPlus11)
186FEATURE(cxx_generalized_initializers, LangOpts.CPlusPlus11)
187FEATURE(cxx_implicit_moves, LangOpts.CPlusPlus11)
188FEATURE(cxx_inheriting_constructors, LangOpts.CPlusPlus11)
189FEATURE(cxx_inline_namespaces, LangOpts.CPlusPlus11)
190FEATURE(cxx_lambdas, LangOpts.CPlusPlus11)
191FEATURE(cxx_local_type_template_args, LangOpts.CPlusPlus11)
192FEATURE(cxx_nonstatic_member_init, LangOpts.CPlusPlus11)
193FEATURE(cxx_noexcept, LangOpts.CPlusPlus11)
194FEATURE(cxx_nullptr, LangOpts.CPlusPlus11)
195FEATURE(cxx_override_control, LangOpts.CPlusPlus11)
196FEATURE(cxx_range_for, LangOpts.CPlusPlus11)
197FEATURE(cxx_raw_string_literals, LangOpts.CPlusPlus11)
198FEATURE(cxx_reference_qualified_functions, LangOpts.CPlusPlus11)
199FEATURE(cxx_rvalue_references, LangOpts.CPlusPlus11)
200FEATURE(cxx_strong_enums, LangOpts.CPlusPlus11)
201FEATURE(cxx_static_assert, LangOpts.CPlusPlus11)
202FEATURE(cxx_thread_local,
203        LangOpts.CPlusPlus11 &&PP.getTargetInfo().isTLSSupported())
204FEATURE(cxx_trailing_return, LangOpts.CPlusPlus11)
205FEATURE(cxx_unicode_literals, LangOpts.CPlusPlus11)
206FEATURE(cxx_unrestricted_unions, LangOpts.CPlusPlus11)
207FEATURE(cxx_user_literals, LangOpts.CPlusPlus11)
208FEATURE(cxx_variadic_templates, LangOpts.CPlusPlus11)
209// C++14 features
210FEATURE(cxx_aggregate_nsdmi, LangOpts.CPlusPlus14)
211FEATURE(cxx_binary_literals, LangOpts.CPlusPlus14)
212FEATURE(cxx_contextual_conversions, LangOpts.CPlusPlus14)
213FEATURE(cxx_decltype_auto, LangOpts.CPlusPlus14)
214FEATURE(cxx_generic_lambdas, LangOpts.CPlusPlus14)
215FEATURE(cxx_init_captures, LangOpts.CPlusPlus14)
216FEATURE(cxx_relaxed_constexpr, LangOpts.CPlusPlus14)
217FEATURE(cxx_return_type_deduction, LangOpts.CPlusPlus14)
218FEATURE(cxx_variable_templates, LangOpts.CPlusPlus14)
219// NOTE: For features covered by SD-6, it is preferable to provide *only*
220// the SD-6 macro and not a __has_feature check.
221
222// C++ TSes
223// FEATURE(cxx_runtime_arrays, LangOpts.CPlusPlusTSArrays)
224// FEATURE(cxx_concepts, LangOpts.CPlusPlusTSConcepts)
225// FIXME: Should this be __has_feature or __has_extension?
226// FEATURE(raw_invocation_type, LangOpts.CPlusPlus)
227// Type traits
228// N.B. Additional type traits should not be added to the following list.
229// Instead, they should be detected by has_builtin.
230FEATURE(has_nothrow_assign, LangOpts.CPlusPlus)
231FEATURE(has_nothrow_copy, LangOpts.CPlusPlus)
232FEATURE(has_nothrow_constructor, LangOpts.CPlusPlus)
233FEATURE(has_trivial_assign, LangOpts.CPlusPlus)
234FEATURE(has_trivial_copy, LangOpts.CPlusPlus)
235FEATURE(has_trivial_constructor, LangOpts.CPlusPlus)
236FEATURE(has_trivial_destructor, LangOpts.CPlusPlus)
237FEATURE(has_virtual_destructor, LangOpts.CPlusPlus)
238FEATURE(is_abstract, LangOpts.CPlusPlus)
239FEATURE(is_base_of, LangOpts.CPlusPlus)
240FEATURE(is_class, LangOpts.CPlusPlus)
241FEATURE(is_constructible, LangOpts.CPlusPlus)
242FEATURE(is_convertible_to, LangOpts.CPlusPlus)
243FEATURE(is_empty, LangOpts.CPlusPlus)
244FEATURE(is_enum, LangOpts.CPlusPlus)
245FEATURE(is_final, LangOpts.CPlusPlus)
246FEATURE(is_literal, LangOpts.CPlusPlus)
247FEATURE(is_standard_layout, LangOpts.CPlusPlus)
248FEATURE(is_pod, LangOpts.CPlusPlus)
249FEATURE(is_polymorphic, LangOpts.CPlusPlus)
250FEATURE(is_sealed, LangOpts.CPlusPlus &&LangOpts.MicrosoftExt)
251FEATURE(is_trivial, LangOpts.CPlusPlus)
252FEATURE(is_trivially_assignable, LangOpts.CPlusPlus)
253FEATURE(is_trivially_constructible, LangOpts.CPlusPlus)
254FEATURE(is_trivially_copyable, LangOpts.CPlusPlus)
255FEATURE(is_union, LangOpts.CPlusPlus)
256FEATURE(kcfi, LangOpts.Sanitize.has(SanitizerKind::KCFI))
257FEATURE(modules, LangOpts.Modules)
258FEATURE(safe_stack, LangOpts.Sanitize.has(SanitizerKind::SafeStack))
259FEATURE(shadow_call_stack,
260        LangOpts.Sanitize.has(SanitizerKind::ShadowCallStack))
261FEATURE(tls, PP.getTargetInfo().isTLSSupported())
262FEATURE(underlying_type, LangOpts.CPlusPlus)
263FEATURE(experimental_library, LangOpts.ExperimentalLibrary)
264
265// C11 features supported by other languages as extensions.
266EXTENSION(c_alignas, true)
267EXTENSION(c_alignof, true)
268EXTENSION(c_atomic, true)
269EXTENSION(c_generic_selections, true)
270EXTENSION(c_generic_selection_with_controlling_type, true)
271EXTENSION(c_static_assert, true)
272EXTENSION(c_thread_local, PP.getTargetInfo().isTLSSupported())
273// C23 features supported by other languages as extensions
274EXTENSION(c_attributes, true)
275EXTENSION(c_fixed_enum, true)
276// C++11 features supported by other languages as extensions.
277EXTENSION(cxx_atomic, LangOpts.CPlusPlus)
278EXTENSION(cxx_default_function_template_args, LangOpts.CPlusPlus)
279EXTENSION(cxx_defaulted_functions, LangOpts.CPlusPlus)
280EXTENSION(cxx_deleted_functions, LangOpts.CPlusPlus)
281EXTENSION(cxx_explicit_conversions, LangOpts.CPlusPlus)
282EXTENSION(cxx_inline_namespaces, LangOpts.CPlusPlus)
283EXTENSION(cxx_lambdas, LangOpts.CPlusPlus)
284EXTENSION(cxx_local_type_template_args, LangOpts.CPlusPlus)
285EXTENSION(cxx_nonstatic_member_init, LangOpts.CPlusPlus)
286EXTENSION(cxx_override_control, LangOpts.CPlusPlus)
287EXTENSION(cxx_range_for, LangOpts.CPlusPlus)
288EXTENSION(cxx_reference_qualified_functions, LangOpts.CPlusPlus)
289EXTENSION(cxx_rvalue_references, LangOpts.CPlusPlus)
290EXTENSION(cxx_variadic_templates, LangOpts.CPlusPlus)
291EXTENSION(cxx_fixed_enum, true)
292// C++14 features supported by other languages as extensions.
293EXTENSION(cxx_binary_literals, true)
294EXTENSION(cxx_init_captures, LangOpts.CPlusPlus11)
295EXTENSION(cxx_variable_templates, LangOpts.CPlusPlus)
296//C++20
297EXTENSION(cxx_generalized_nttp, LangOpts.CPlusPlus20)
298//C++23
299EXTENSION(cxx_explicit_this_parameter, LangOpts.CPlusPlus23)
300// Miscellaneous language extensions
301EXTENSION(overloadable_unmarked, true)
302EXTENSION(pragma_clang_attribute_namespaces, true)
303EXTENSION(pragma_clang_attribute_external_declaration, true)
304EXTENSION(statement_attributes_with_gnu_syntax, true)
305EXTENSION(gnu_asm, LangOpts.GNUAsm)
306EXTENSION(gnu_asm_goto_with_outputs, LangOpts.GNUAsm)
307EXTENSION(gnu_asm_goto_with_outputs_full, LangOpts.GNUAsm)
308EXTENSION(matrix_types, LangOpts.MatrixTypes)
309EXTENSION(matrix_types_scalar_division, true)
310EXTENSION(cxx_attributes_on_using_declarations, LangOpts.CPlusPlus11)
311EXTENSION(datasizeof, LangOpts.CPlusPlus)
312
313FEATURE(cxx_abi_relative_vtable, LangOpts.CPlusPlus && LangOpts.RelativeCXXABIVTables)
314
315// CUDA/HIP Features
316FEATURE(cuda_noinline_keyword, LangOpts.CUDA)
317EXTENSION(cuda_implicit_host_device_templates, LangOpts.CUDA && LangOpts.OffloadImplicitHostDeviceTemplates)
318
319#undef EXTENSION
320#undef FEATURE
321