/Users/buildslave/jenkins/workspace/coverage/llvm-project/clang/include/clang/Basic/Specifiers.h

Source (jump to first uncovered line)
//===--- Specifiers.h - Declaration and Type Specifiers ---------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// Defines various enumerations that describe declaration and
/// type specifiers.
///
//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_BASIC_SPECIFIERS_H
#define LLVM_CLANG_BASIC_SPECIFIERS_H

#include "llvm/ADT/StringRef.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/ErrorHandling.h"

namespace clang {

  /// Define the meaning of possible values of the kind in ExplicitSpecifier.
  enum class ExplicitSpecKind : unsigned {
    ResolvedFalse,
    ResolvedTrue,
    Unresolved,
  };

  /// Define the kind of constexpr specifier.
  enum class ConstexprSpecKind { Unspecified, Constexpr, Consteval, Constinit };

  /// In an if statement, this denotes whether the the statement is
  /// a constexpr or consteval if statement.
  enum class IfStatementKind : unsigned {
    Ordinary,
    Constexpr,
    ConstevalNonNegated,
    ConstevalNegated
  };

  /// Specifies the width of a type, e.g., short, long, or long long.
  enum class TypeSpecifierWidth { Unspecified, Short, Long, LongLong };

  /// Specifies the signedness of a type, e.g., signed or unsigned.
  enum class TypeSpecifierSign { Unspecified, Signed, Unsigned };

  enum class TypeSpecifiersPipe { Unspecified, Pipe };

  /// Specifies the kind of type.
  enum TypeSpecifierType {
    TST_unspecified,
    TST_void,
    TST_char,
    TST_wchar,        // C++ wchar_t
    TST_char8,        // C++20 char8_t (proposed)
    TST_char16,       // C++11 char16_t
    TST_char32,       // C++11 char32_t
    TST_int,
    TST_int128,
    TST_bitint,       // Bit-precise integer types.
    TST_half,         // OpenCL half, ARM NEON __fp16
    TST_Float16,      // C11 extension ISO/IEC TS 18661-3
    TST_Accum,        // ISO/IEC JTC1 SC22 WG14 N1169 Extension
    TST_Fract,
    TST_BFloat16,
    TST_float,
    TST_double,
    TST_float128,
    TST_ibm128,
    TST_bool,         // _Bool
    TST_decimal32,    // _Decimal32
    TST_decimal64,    // _Decimal64
    TST_decimal128,   // _Decimal128
    TST_enum,
    TST_union,
    TST_struct,
    TST_class,        // C++ class type
    TST_interface,    // C++ (Microsoft-specific) __interface type
    TST_typename,     // Typedef, C++ class-name or enum name, etc.
    TST_typeofType,
    TST_typeofExpr,
    TST_decltype,         // C++11 decltype
    TST_underlyingType,   // __underlying_type for C++11
    TST_auto,             // C++11 auto
    TST_decltype_auto,    // C++1y decltype(auto)
    TST_auto_type,        // __auto_type extension
    TST_unknown_anytype,  // __unknown_anytype extension
    TST_atomic,           // C11 _Atomic
#define GENERIC_IMAGE_TYPE(ImgType, Id) TST_##ImgType##_t, // OpenCL image types
#include "clang/Basic/OpenCLImageTypes.def"
    TST_error // erroneous type
  };

  /// Structure that packs information about the type specifiers that
  /// were written in a particular type specifier sequence.
  struct WrittenBuiltinSpecs {
    static_assert(TST_error < 1 << 6, "Type bitfield not wide enough for TST");
    /*DeclSpec::TST*/ unsigned Type  : 6;
    /*DeclSpec::TSS*/ unsigned Sign  : 2;
    /*TypeSpecifierWidth*/ unsigned Width : 2;
    unsigned ModeAttr : 1;
  };

  /// A C++ access specifier (public, private, protected), plus the
  /// special value "none" which means different things in different contexts.
  enum AccessSpecifier {
    AS_public,
    AS_protected,
    AS_private,
    AS_none
  };

  /// The categorization of expression values, currently following the
  /// C++11 scheme.
  enum ExprValueKind {
    /// A pr-value expression (in the C++11 taxonomy)
    /// produces a temporary value.
    VK_PRValue,

    /// An l-value expression is a reference to an object with
    /// independent storage.
    VK_LValue,

    /// An x-value expression is a reference to an object with
    /// independent storage but which can be "moved", i.e.
    /// efficiently cannibalized for its resources.
    VK_XValue
  };

  /// A further classification of the kind of object referenced by an
  /// l-value or x-value.
  enum ExprObjectKind {
    /// An ordinary object is located at an address in memory.
    OK_Ordinary,

    /// A bitfield object is a bitfield on a C or C++ record.
    OK_BitField,

    /// A vector component is an element or range of elements on a vector.
    OK_VectorComponent,

    /// An Objective-C property is a logical field of an Objective-C
    /// object which is read and written via Objective-C method calls.
    OK_ObjCProperty,

    /// An Objective-C array/dictionary subscripting which reads an
    /// object or writes at the subscripted array/dictionary element via
    /// Objective-C method calls.
    OK_ObjCSubscript,

    /// A matrix component is a single element of a matrix.
    OK_MatrixComponent
  };

  /// The reason why a DeclRefExpr does not constitute an odr-use.
  enum NonOdrUseReason {
    /// This is an odr-use.
    NOUR_None = 0,
    /// This name appears in an unevaluated operand.
    NOUR_Unevaluated,
    /// This name appears as a potential result of an lvalue-to-rvalue
    /// conversion that is a constant expression.
    NOUR_Constant,
    /// This name appears as a potential result of a discarded value
    /// expression.
    NOUR_Discarded,
  };

  /// Describes the kind of template specialization that a
  /// particular template specialization declaration represents.
  enum TemplateSpecializationKind {
    /// This template specialization was formed from a template-id but
    /// has not yet been declared, defined, or instantiated.
    TSK_Undeclared = 0,
    /// This template specialization was implicitly instantiated from a
    /// template. (C++ [temp.inst]).
    TSK_ImplicitInstantiation,
    /// This template specialization was declared or defined by an
    /// explicit specialization (C++ [temp.expl.spec]) or partial
    /// specialization (C++ [temp.class.spec]).
    TSK_ExplicitSpecialization,
    /// This template specialization was instantiated from a template
    /// due to an explicit instantiation declaration request
    /// (C++11 [temp.explicit]).
    TSK_ExplicitInstantiationDeclaration,
    /// This template specialization was instantiated from a template
    /// due to an explicit instantiation definition request
    /// (C++ [temp.explicit]).
    TSK_ExplicitInstantiationDefinition
  };

  /// Determine whether this template specialization kind refers
  /// to an instantiation of an entity (as opposed to a non-template or
  /// an explicit specialization).
  inline bool isTemplateInstantiation(TemplateSpecializationKind Kind) {
    return Kind != TSK_Undeclared && Kind != TSK_ExplicitSpecialization5.36M;
  }

  /// True if this template specialization kind is an explicit
  /// specialization, explicit instantiation declaration, or explicit
  /// instantiation definition.
  inline bool isTemplateExplicitInstantiationOrSpecialization(
      TemplateSpecializationKind Kind) {
    switch (Kind) {
    case TSK_ExplicitSpecialization:
    case TSK_ExplicitInstantiationDeclaration:
    case TSK_ExplicitInstantiationDefinition:
      return true;

    case TSK_Undeclared:
    case TSK_ImplicitInstantiation:
      return false;
    }
    llvm_unreachable("bad template specialization kind");
  }

  /// Thread storage-class-specifier.
  enum ThreadStorageClassSpecifier {
    TSCS_unspecified,
    /// GNU __thread.
    TSCS___thread,
    /// C++11 thread_local. Implies 'static' at block scope, but not at
    /// class scope.
    TSCS_thread_local,
    /// C11 _Thread_local. Must be combined with either 'static' or 'extern'
    /// if used at block scope.
    TSCS__Thread_local
  };

  /// Storage classes.
  enum StorageClass {
    // These are legal on both functions and variables.
    SC_None,
    SC_Extern,
    SC_Static,
    SC_PrivateExtern,

    // These are only legal on variables.
    SC_Auto,
    SC_Register
  };

  /// Checks whether the given storage class is legal for functions.
  inline bool isLegalForFunction(StorageClass SC) {
    return SC <= SC_PrivateExtern;
  }

  /// Checks whether the given storage class is legal for variables.
  inline bool isLegalForVariable(StorageClass SC) {
    return true;
  }

  /// In-class initialization styles for non-static data members.
  enum InClassInitStyle {
    ICIS_NoInit,   ///< No in-class initializer.
    ICIS_CopyInit, ///< Copy initialization.
    ICIS_ListInit  ///< Direct list-initialization.
  };

  /// CallingConv - Specifies the calling convention that a function uses.
  enum CallingConv {
    CC_C,           // __attribute__((cdecl))
    CC_X86StdCall,  // __attribute__((stdcall))
    CC_X86FastCall, // __attribute__((fastcall))
    CC_X86ThisCall, // __attribute__((thiscall))
    CC_X86VectorCall, // __attribute__((vectorcall))
    CC_X86Pascal,   // __attribute__((pascal))
    CC_Win64,       // __attribute__((ms_abi))
    CC_X86_64SysV,  // __attribute__((sysv_abi))
    CC_X86RegCall, // __attribute__((regcall))
    CC_AAPCS,       // __attribute__((pcs("aapcs")))
    CC_AAPCS_VFP,   // __attribute__((pcs("aapcs-vfp")))
    CC_IntelOclBicc, // __attribute__((intel_ocl_bicc))
    CC_SpirFunction, // default for OpenCL functions on SPIR target
    CC_OpenCLKernel, // inferred for OpenCL kernels
    CC_Swift,        // __attribute__((swiftcall))
    CC_SwiftAsync,        // __attribute__((swiftasynccall))
    CC_PreserveMost, // __attribute__((preserve_most))
    CC_PreserveAll,  // __attribute__((preserve_all))
    CC_AArch64VectorCall, // __attribute__((aarch64_vector_pcs))
  };

  /// Checks whether the given calling convention supports variadic
  /// calls. Unprototyped calls also use the variadic call rules.
  inline bool supportsVariadicCall(CallingConv CC) {
    switch (CC) {
    case CC_X86StdCall:
    case CC_X86FastCall:
    case CC_X86ThisCall:
    case CC_X86RegCall:
    case CC_X86Pascal:
    case CC_X86VectorCall:
    case CC_SpirFunction:
    case CC_OpenCLKernel:
    case CC_Swift:
    case CC_SwiftAsync:
      return false;
    default:
      return true;
    }
  }

  /// The storage duration for an object (per C++ [basic.stc]).
  enum StorageDuration {
    SD_FullExpression, ///< Full-expression storage duration (for temporaries).
    SD_Automatic,      ///< Automatic storage duration (most local variables).
    SD_Thread,         ///< Thread storage duration.
    SD_Static,         ///< Static storage duration.
    SD_Dynamic         ///< Dynamic storage duration.
  };

  /// Describes the nullability of a particular type.
  enum class NullabilityKind : uint8_t {
    /// Values of this type can never be null.
    NonNull = 0,
    /// Values of this type can be null.
    Nullable,
    /// Whether values of this type can be null is (explicitly)
    /// unspecified. This captures a (fairly rare) case where we
    /// can't conclude anything about the nullability of the type even
    /// though it has been considered.
    Unspecified,
    // Generally behaves like Nullable, except when used in a block parameter
    // that was imported into a swift async method. There, swift will assume
    // that the parameter can get null even if no error occured. _Nullable
    // parameters are assumed to only get null on error.
    NullableResult,
  };

  /// Return true if \p L has a weaker nullability annotation than \p R. The
  /// ordering is: Unspecified < Nullable < NonNull.
  inline bool hasWeakerNullability(NullabilityKind L, NullabilityKind R) {
    return uint8_t(L) > uint8_t(R);
  }

  /// Retrieve the spelling of the given nullability kind.
  llvm::StringRef getNullabilitySpelling(NullabilityKind kind,
                                         bool isContextSensitive = false);

  /// Kinds of parameter ABI.
  enum class ParameterABI {
    /// This parameter uses ordinary ABI rules for its type.
    Ordinary,

    /// This parameter (which must have pointer type) is a Swift
    /// indirect result parameter.
    SwiftIndirectResult,

    /// This parameter (which must have pointer-to-pointer type) uses
    /// the special Swift error-result ABI treatment.  There can be at
    /// most one parameter on a given function that uses this treatment.
    SwiftErrorResult,

    /// This parameter (which must have pointer type) uses the special
    /// Swift context-pointer ABI treatment.  There can be at
    /// most one parameter on a given function that uses this treatment.
    SwiftContext,

    /// This parameter (which must have pointer type) uses the special
    /// Swift asynchronous context-pointer ABI treatment.  There can be at
    /// most one parameter on a given function that uses this treatment.
    SwiftAsyncContext,
  };

  /// Assigned inheritance model for a class in the MS C++ ABI. Must match order
  /// of spellings in MSInheritanceAttr.
  enum class MSInheritanceModel {
    Single = 0,
    Multiple = 1,
    Virtual = 2,
    Unspecified = 3,
  };

  llvm::StringRef getParameterABISpelling(ParameterABI kind);

  inline llvm::StringRef getAccessSpelling(AccessSpecifier AS) {
    switch (AS) {
    case AccessSpecifier::AS_public:
      return "public";
    case AccessSpecifier::AS_protected:
      return "protected";
    case AccessSpecifier::AS_private:
      return "private";
    case AccessSpecifier::AS_none:
      return {};
    }
    llvm_unreachable("Unknown AccessSpecifier");
  }
} // end namespace clang

#endif // LLVM_CLANG_BASIC_SPECIFIERS_H

Coverage Report

Created: 2022-01-22 13:19

Line	Count	Source (jump to first uncovered line)
1		//===--- Specifiers.h - Declaration and Type Specifiers ---------- 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		/// \file
10		/// Defines various enumerations that describe declaration and
11		/// type specifiers.
12		///
13		//===----------------------------------------------------------------------===//
14
15		#ifndef LLVM_CLANG_BASIC_SPECIFIERS_H
16		#define LLVM_CLANG_BASIC_SPECIFIERS_H
17
18		#include "llvm/ADT/StringRef.h"
19		#include "llvm/Support/DataTypes.h"
20		#include "llvm/Support/ErrorHandling.h"
21
22		namespace clang {
23
24		/// Define the meaning of possible values of the kind in ExplicitSpecifier.
25		enum class ExplicitSpecKind : unsigned {
26		ResolvedFalse,
27		ResolvedTrue,
28		Unresolved,
29		};
30
31		/// Define the kind of constexpr specifier.
32		enum class ConstexprSpecKind { Unspecified, Constexpr, Consteval, Constinit };
33
34		/// In an if statement, this denotes whether the the statement is
35		/// a constexpr or consteval if statement.
36		enum class IfStatementKind : unsigned {
37		Ordinary,
38		Constexpr,
39		ConstevalNonNegated,
40		ConstevalNegated
41		};
42
43		/// Specifies the width of a type, e.g., short, long, or long long.
44		enum class TypeSpecifierWidth { Unspecified, Short, Long, LongLong };
45
46		/// Specifies the signedness of a type, e.g., signed or unsigned.
47		enum class TypeSpecifierSign { Unspecified, Signed, Unsigned };
48
49		enum class TypeSpecifiersPipe { Unspecified, Pipe };
50
51		/// Specifies the kind of type.
52		enum TypeSpecifierType {
53		TST_unspecified,
54		TST_void,
55		TST_char,
56		TST_wchar, // C++ wchar_t
57		TST_char8, // C++20 char8_t (proposed)
58		TST_char16, // C++11 char16_t
59		TST_char32, // C++11 char32_t
60		TST_int,
61		TST_int128,
62		TST_bitint, // Bit-precise integer types.
63		TST_half, // OpenCL half, ARM NEON __fp16
64		TST_Float16, // C11 extension ISO/IEC TS 18661-3
65		TST_Accum, // ISO/IEC JTC1 SC22 WG14 N1169 Extension
66		TST_Fract,
67		TST_BFloat16,
68		TST_float,
69		TST_double,
70		TST_float128,
71		TST_ibm128,
72		TST_bool, // _Bool
73		TST_decimal32, // _Decimal32
74		TST_decimal64, // _Decimal64
75		TST_decimal128, // _Decimal128
76		TST_enum,
77		TST_union,
78		TST_struct,
79		TST_class, // C++ class type
80		TST_interface, // C++ (Microsoft-specific) __interface type
81		TST_typename, // Typedef, C++ class-name or enum name, etc.
82		TST_typeofType,
83		TST_typeofExpr,
84		TST_decltype, // C++11 decltype
85		TST_underlyingType, // __underlying_type for C++11
86		TST_auto, // C++11 auto
87		TST_decltype_auto, // C++1y decltype(auto)
88		TST_auto_type, // __auto_type extension
89		TST_unknown_anytype, // __unknown_anytype extension
90		TST_atomic, // C11 _Atomic
91		#define GENERIC_IMAGE_TYPE(ImgType, Id) TST_##ImgType##_t, // OpenCL image types
92		#include "clang/Basic/OpenCLImageTypes.def"
93		TST_error // erroneous type
94		};
95
96		/// Structure that packs information about the type specifiers that
97		/// were written in a particular type specifier sequence.
98		struct WrittenBuiltinSpecs {
99		static_assert(TST_error < 1 << 6, "Type bitfield not wide enough for TST");
100		/DeclSpec::TST/ unsigned Type : 6;
101		/DeclSpec::TSS/ unsigned Sign : 2;
102		/TypeSpecifierWidth/ unsigned Width : 2;
103		unsigned ModeAttr : 1;
104		};
105
106		/// A C++ access specifier (public, private, protected), plus the
107		/// special value "none" which means different things in different contexts.
108		enum AccessSpecifier {
109		AS_public,
110		AS_protected,
111		AS_private,
112		AS_none
113		};
114
115		/// The categorization of expression values, currently following the
116		/// C++11 scheme.
117		enum ExprValueKind {
118		/// A pr-value expression (in the C++11 taxonomy)
119		/// produces a temporary value.
120		VK_PRValue,
121
122		/// An l-value expression is a reference to an object with
123		/// independent storage.
124		VK_LValue,
125
126		/// An x-value expression is a reference to an object with
127		/// independent storage but which can be "moved", i.e.
128		/// efficiently cannibalized for its resources.
129		VK_XValue
130		};
131
132		/// A further classification of the kind of object referenced by an
133		/// l-value or x-value.
134		enum ExprObjectKind {
135		/// An ordinary object is located at an address in memory.
136		OK_Ordinary,
137
138		/// A bitfield object is a bitfield on a C or C++ record.
139		OK_BitField,
140
141		/// A vector component is an element or range of elements on a vector.
142		OK_VectorComponent,
143
144		/// An Objective-C property is a logical field of an Objective-C
145		/// object which is read and written via Objective-C method calls.
146		OK_ObjCProperty,
147
148		/// An Objective-C array/dictionary subscripting which reads an
149		/// object or writes at the subscripted array/dictionary element via
150		/// Objective-C method calls.
151		OK_ObjCSubscript,
152
153		/// A matrix component is a single element of a matrix.
154		OK_MatrixComponent
155		};
156
157		/// The reason why a DeclRefExpr does not constitute an odr-use.
158		enum NonOdrUseReason {
159		/// This is an odr-use.
160		NOUR_None = 0,
161		/// This name appears in an unevaluated operand.
162		NOUR_Unevaluated,
163		/// This name appears as a potential result of an lvalue-to-rvalue
164		/// conversion that is a constant expression.
165		NOUR_Constant,
166		/// This name appears as a potential result of a discarded value
167		/// expression.
168		NOUR_Discarded,
169		};
170
171		/// Describes the kind of template specialization that a
172		/// particular template specialization declaration represents.
173		enum TemplateSpecializationKind {
174		/// This template specialization was formed from a template-id but
175		/// has not yet been declared, defined, or instantiated.
176		TSK_Undeclared = 0,
177		/// This template specialization was implicitly instantiated from a
178		/// template. (C++ [temp.inst]).
179		TSK_ImplicitInstantiation,
180		/// This template specialization was declared or defined by an
181		/// explicit specialization (C++ [temp.expl.spec]) or partial
182		/// specialization (C++ [temp.class.spec]).
183		TSK_ExplicitSpecialization,
184		/// This template specialization was instantiated from a template
185		/// due to an explicit instantiation declaration request
186		/// (C++11 [temp.explicit]).
187		TSK_ExplicitInstantiationDeclaration,
188		/// This template specialization was instantiated from a template
189		/// due to an explicit instantiation definition request
190		/// (C++ [temp.explicit]).
191		TSK_ExplicitInstantiationDefinition
192		};
193
194		/// Determine whether this template specialization kind refers
195		/// to an instantiation of an entity (as opposed to a non-template or
196		/// an explicit specialization).
197	22.1M	inline bool isTemplateInstantiation(TemplateSpecializationKind Kind) {
198	22.1M	return Kind != TSK_Undeclared && Kind != TSK_ExplicitSpecialization5.36M ;
199	22.1M	}
200
201		/// True if this template specialization kind is an explicit
202		/// specialization, explicit instantiation declaration, or explicit
203		/// instantiation definition.
204		inline bool isTemplateExplicitInstantiationOrSpecialization(
205	1.34M	TemplateSpecializationKind Kind) {
206	1.34M	switch (Kind) {
207	158k	case TSK_ExplicitSpecialization:
208	163k	case TSK_ExplicitInstantiationDeclaration:
209	170k	case TSK_ExplicitInstantiationDefinition:
210	170k	return true;
211
212	47.9k	case TSK_Undeclared:
213	1.17M	case TSK_ImplicitInstantiation:
214	1.17M	return false;
215	1.34M	}
216	0	llvm_unreachable("bad template specialization kind");
217	0	}
218
219		/// Thread storage-class-specifier.
220		enum ThreadStorageClassSpecifier {
221		TSCS_unspecified,
222		/// GNU __thread.
223		TSCS___thread,
224		/// C++11 thread_local. Implies 'static' at block scope, but not at
225		/// class scope.
226		TSCS_thread_local,
227		/// C11 _Thread_local. Must be combined with either 'static' or 'extern'
228		/// if used at block scope.
229		TSCS__Thread_local
230		};
231
232		/// Storage classes.
233		enum StorageClass {
234		// These are legal on both functions and variables.
235		SC_None,
236		SC_Extern,
237		SC_Static,
238		SC_PrivateExtern,
239
240		// These are only legal on variables.
241		SC_Auto,
242		SC_Register
243		};
244
245		/// Checks whether the given storage class is legal for functions.
246	0	inline bool isLegalForFunction(StorageClass SC) {
247	0	return SC <= SC_PrivateExtern;
248	0	}
249
250		/// Checks whether the given storage class is legal for variables.
251	66.7k	inline bool isLegalForVariable(StorageClass SC) {
252	66.7k	return true;
253	66.7k	}
254
255		/// In-class initialization styles for non-static data members.
256		enum InClassInitStyle {
257		ICIS_NoInit, ///< No in-class initializer.
258		ICIS_CopyInit, ///< Copy initialization.
259		ICIS_ListInit ///< Direct list-initialization.
260		};
261
262		/// CallingConv - Specifies the calling convention that a function uses.
263		enum CallingConv {
264		CC_C, // __attribute__((cdecl))
265		CC_X86StdCall, // __attribute__((stdcall))
266		CC_X86FastCall, // __attribute__((fastcall))
267		CC_X86ThisCall, // __attribute__((thiscall))
268		CC_X86VectorCall, // __attribute__((vectorcall))
269		CC_X86Pascal, // __attribute__((pascal))
270		CC_Win64, // __attribute__((ms_abi))
271		CC_X86_64SysV, // __attribute__((sysv_abi))
272		CC_X86RegCall, // __attribute__((regcall))
273		CC_AAPCS, // __attribute__((pcs("aapcs")))
274		CC_AAPCS_VFP, // __attribute__((pcs("aapcs-vfp")))
275		CC_IntelOclBicc, // __attribute__((intel_ocl_bicc))
276		CC_SpirFunction, // default for OpenCL functions on SPIR target
277		CC_OpenCLKernel, // inferred for OpenCL kernels
278		CC_Swift, // __attribute__((swiftcall))
279		CC_SwiftAsync, // __attribute__((swiftasynccall))
280		CC_PreserveMost, // __attribute__((preserve_most))
281		CC_PreserveAll, // __attribute__((preserve_all))
282		CC_AArch64VectorCall, // __attribute__((aarch64_vector_pcs))
283		};
284
285		/// Checks whether the given calling convention supports variadic
286		/// calls. Unprototyped calls also use the variadic call rules.
287	99.0k	inline bool supportsVariadicCall(CallingConv CC) {
288	99.0k	switch (CC) {
289	224	case CC_X86StdCall:
290	396	case CC_X86FastCall:
291	466	case CC_X86ThisCall:
292	591	case CC_X86RegCall:
293	607	case CC_X86Pascal:
294	799	case CC_X86VectorCall:
295	799	case CC_SpirFunction:
296	799	case CC_OpenCLKernel:
297	2.01k	case CC_Swift:
298	2.19k	case CC_SwiftAsync:
299	2.19k	return false;
300	96.8k	default:
301	96.8k	return true;
302	99.0k	}
303	99.0k	}
304
305		/// The storage duration for an object (per C++ [basic.stc]).
306		enum StorageDuration {
307		SD_FullExpression, ///< Full-expression storage duration (for temporaries).
308		SD_Automatic, ///< Automatic storage duration (most local variables).
309		SD_Thread, ///< Thread storage duration.
310		SD_Static, ///< Static storage duration.
311		SD_Dynamic ///< Dynamic storage duration.
312		};
313
314		/// Describes the nullability of a particular type.
315		enum class NullabilityKind : uint8_t {
316		/// Values of this type can never be null.
317		NonNull = 0,
318		/// Values of this type can be null.
319		Nullable,
320		/// Whether values of this type can be null is (explicitly)
321		/// unspecified. This captures a (fairly rare) case where we
322		/// can't conclude anything about the nullability of the type even
323		/// though it has been considered.
324		Unspecified,
325		// Generally behaves like Nullable, except when used in a block parameter
326		// that was imported into a swift async method. There, swift will assume
327		// that the parameter can get null even if no error occured. _Nullable
328		// parameters are assumed to only get null on error.
329		NullableResult,
330		};
331
332		/// Return true if \p L has a weaker nullability annotation than \p R. The
333		/// ordering is: Unspecified < Nullable < NonNull.
334	2	inline bool hasWeakerNullability(NullabilityKind L, NullabilityKind R) {
335	2	return uint8_t(L) > uint8_t(R);
336	2	}
337
338		/// Retrieve the spelling of the given nullability kind.
339		llvm::StringRef getNullabilitySpelling(NullabilityKind kind,
340		bool isContextSensitive = false);
341
342		/// Kinds of parameter ABI.
343		enum class ParameterABI {
344		/// This parameter uses ordinary ABI rules for its type.
345		Ordinary,
346
347		/// This parameter (which must have pointer type) is a Swift
348		/// indirect result parameter.
349		SwiftIndirectResult,
350
351		/// This parameter (which must have pointer-to-pointer type) uses
352		/// the special Swift error-result ABI treatment. There can be at
353		/// most one parameter on a given function that uses this treatment.
354		SwiftErrorResult,
355
356		/// This parameter (which must have pointer type) uses the special
357		/// Swift context-pointer ABI treatment. There can be at
358		/// most one parameter on a given function that uses this treatment.
359		SwiftContext,
360
361		/// This parameter (which must have pointer type) uses the special
362		/// Swift asynchronous context-pointer ABI treatment. There can be at
363		/// most one parameter on a given function that uses this treatment.
364		SwiftAsyncContext,
365		};
366
367		/// Assigned inheritance model for a class in the MS C++ ABI. Must match order
368		/// of spellings in MSInheritanceAttr.
369		enum class MSInheritanceModel {
370		Single = 0,
371		Multiple = 1,
372		Virtual = 2,
373		Unspecified = 3,
374		};
375
376		llvm::StringRef getParameterABISpelling(ParameterABI kind);
377
378	1.73k	inline llvm::StringRef getAccessSpelling(AccessSpecifier AS) {
379	1.73k	switch (AS) {
380	1.35k	case AccessSpecifier::AS_public:
381	1.35k	return "public";
382	313	case AccessSpecifier::AS_protected:
383	313	return "protected";
384	61	case AccessSpecifier::AS_private:
385	61	return "private";
386	9	case AccessSpecifier::AS_none:
387	9	return {};
388	1.73k	}
389	0	llvm_unreachable("Unknown AccessSpecifier");
390	0	}
391		} // end namespace clang
392
393		#endif // LLVM_CLANG_BASIC_SPECIFIERS_H