ItaniumMangle.cpp File Reference

#include "clang/AST/ASTContext.h"
#include "clang/AST/Attr.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/DeclOpenMP.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/Expr.h"
#include "clang/AST/ExprCXX.h"
#include "clang/AST/ExprConcepts.h"
#include "clang/AST/ExprObjC.h"
#include "clang/AST/Mangle.h"
#include "clang/AST/TypeLoc.h"
#include "clang/Basic/ABI.h"
#include "clang/Basic/DiagnosticAST.h"
#include "clang/Basic/Module.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Basic/Thunk.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/TargetParser/RISCVTargetParser.h"
#include <optional>
#include "clang/AST/TypeNodes.inc"
#include "clang/AST/BuiltinTypes.def"
#include "clang/Basic/OpenCLImageTypes.def"
#include "clang/Basic/OpenCLExtensionTypes.def"
#include "clang/Basic/AArch64SVEACLETypes.def"
#include "clang/Basic/PPCTypes.def"
#include "clang/Basic/RISCVVTypes.def"
#include "clang/Basic/WebAssemblyReferenceTypes.def"
#include "clang/Basic/AMDGPUTypes.def"
#include "clang/Basic/TransformTypeTraits.def"
#include "clang/AST/StmtNodes.inc"

Go to the source code of this file.

Classes
struct	CXXNameMangler::TemplateArgManglingInfo
struct	CXXNameMangler::TemplateArgManglingInfo::Info
	Information about how to mangle a template argument. More...

Macros
#define	ABSTRACT_TYPE(CLASS, PARENT)
#define	NON_CANONICAL_TYPE(CLASS, PARENT)
#define	TYPE(CLASS, PARENT)   void mangleType(const CLASS##Type *T);
#define	ABSTRACT_TYPE(CLASS, PARENT)
#define	NON_CANONICAL_TYPE(CLASS, PARENT)
#define	TYPE(CLASS, PARENT)
#define	BUILTIN_TYPE(Id, SingletonId)
#define	PLACEHOLDER_TYPE(Id, SingletonId)    case BuiltinType::Id:
#define	IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix)
#define	EXT_OPAQUE_TYPE(ExtType, Id, Ext)
#define	SVE_VECTOR_TYPE(InternalName, MangledName, Id, SingletonId, NumEls, ElBits, IsSigned, IsFP, IsBF)
#define	SVE_PREDICATE_TYPE(InternalName, MangledName, Id, SingletonId, NumEls)
#define	SVE_OPAQUE_TYPE(InternalName, MangledName, Id, SingletonId)
#define	PPC_VECTOR_TYPE(Name, Id, Size)
#define	RVV_TYPE(Name, Id, SingletonId)
#define	WASM_REF_TYPE(InternalName, MangledName, Id, SingletonId, AS)
#define	AMDGPU_TYPE(Name, Id, SingletonId)
#define	TRANSFORM_TYPE_TRAIT_DEF(Enum, Trait)
#define	ABSTRACT_STMT(Type)
#define	EXPR(Type, Base)
#define	STMT(Type, Base)    case Expr::Type##Class:

Functions
static const GlobalDecl	isTemplate (GlobalDecl GD, const TemplateArgumentList *&TemplateArgs)
static TemplateName	asTemplateName (GlobalDecl GD)
static GlobalDecl	getParentOfLocalEntity (const DeclContext *DC)
static bool	isTypeSubstitutable (Qualifiers Quals, const Type *Ty, ASTContext &Ctx)
static StringRef	mangleAArch64VectorBase (const BuiltinType *EltType)
static bool	isParenthesizedADLCallee (const CallExpr *call)
	Look at the callee of the given call expression and determine if it's a parenthesized id-expression which would have triggered ADL otherwise.
static bool	isZeroInitialized (QualType T, const APValue &V)
	Determine whether a given value is equivalent to zero-initialization for the purpose of discarding a trailing portion of a 'tl' mangling.
static QualType	getLValueType (ASTContext &Ctx, const APValue &LV)
static IdentifierInfo *	getUnionInitName (SourceLocation UnionLoc, DiagnosticsEngine &Diags, const FieldDecl *FD)
static bool	hasMangledSubstitutionQualifiers (QualType T)
	Determine whether the given type has any qualifiers that are relevant for substitutions.
static void	mangleOverrideDiscrimination (CXXNameMangler &Mangler, ASTContext &Context, const ThunkInfo &Thunk)
	Mangles the pointer authentication override attribute for classes that have explicit overrides for the vtable authentication schema.

Macro Definition Documentation

ABSTRACT_STMT

#define ABSTRACT_STMT

(

Type

)

ABSTRACT_TYPE [1/2]

#define ABSTRACT_TYPE	(		CLASS,
			PARENT
	)

Definition at line 568 of file ItaniumMangle.cpp.

ABSTRACT_TYPE [2/2]

#define ABSTRACT_TYPE	(		CLASS,
			PARENT
	)

Definition at line 568 of file ItaniumMangle.cpp.

AMDGPU_TYPE

#define AMDGPU_TYPE	(		Name,
			Id,
			SingletonId
	)

Value:

  case BuiltinType::Id:                                                        \
    type_name = Name;                                                          \
    Out << 'u' << type_name.size() << type_name;                               \
    break;

BUILTIN_TYPE

#define BUILTIN_TYPE	(		Id,
			SingletonId
	)

EXPR

#define EXPR	(		Type,
			Base
	)

EXT_OPAQUE_TYPE

#define EXT_OPAQUE_TYPE	(		ExtType,
			Id,
			Ext
	)

Value:

  case BuiltinType::Id: \
    type_name = "ocl_" #ExtType; \
    Out << type_name.size() << type_name; \
    break;

IMAGE_TYPE

#define IMAGE_TYPE	(		ImgType,
			Id,
			SingletonId,
			Access,
			Suffix
	)

Value:

  case BuiltinType::Id: \
    type_name = "ocl_" #ImgType "_" #Suffix; \
    Out << type_name.size() << type_name; \
    break;

NON_CANONICAL_TYPE [1/2]

#define NON_CANONICAL_TYPE	(		CLASS,
			PARENT
	)

Definition at line 569 of file ItaniumMangle.cpp.

NON_CANONICAL_TYPE [2/2]

#define NON_CANONICAL_TYPE	(		CLASS,
			PARENT
	)

Value:

    case Type::CLASS: \
      llvm_unreachable("can't mangle non-canonical type " #CLASS "Type"); \
      return;

Definition at line 569 of file ItaniumMangle.cpp.

PLACEHOLDER_TYPE

#define PLACEHOLDER_TYPE	(		Id,
			SingletonId
	)		case BuiltinType::Id:

PPC_VECTOR_TYPE

#define PPC_VECTOR_TYPE	(		Name,
			Id,
			Size
	)

Value:

  case BuiltinType::Id: \
    type_name = #Name; \
    Out << 'u' << type_name.size() << type_name; \
    break;

RVV_TYPE

#define RVV_TYPE	(		Name,
			Id,
			SingletonId
	)

Value:

  case BuiltinType::Id:                                                        \
    type_name = Name;                                                          \
    Out << 'u' << type_name.size() << type_name;                               \
    break;

STMT

#define STMT	(		Type,
			Base
	)		case Expr::Type##Class:

SVE_OPAQUE_TYPE

#define SVE_OPAQUE_TYPE	(		InternalName,
			MangledName,
			Id,
			SingletonId
	)

Value:

  case BuiltinType::Id:                                                        \
    type_name = MangledName;                                                   \
    Out << (type_name == InternalName ? "u" : "") << type_name.size()          \
        << type_name;                                                          \
    break;

SVE_PREDICATE_TYPE

#define SVE_PREDICATE_TYPE	(		InternalName,
			MangledName,
			Id,
			SingletonId,
			NumEls
	)

Value:

  case BuiltinType::Id:                                                        \
    type_name = MangledName;                                                   \
    Out << (type_name == InternalName ? "u" : "") << type_name.size()          \
        << type_name;                                                          \
    break;

SVE_VECTOR_TYPE

#define SVE_VECTOR_TYPE	(		InternalName,
			MangledName,
			Id,
			SingletonId,
			NumEls,
			ElBits,
			IsSigned,
			IsFP,
			IsBF
	)

Value:

  case BuiltinType::Id:                                                        \
    if (T->getKind() == BuiltinType::SveBFloat16 &&                            \
        isCompatibleWith(LangOptions::ClangABI::Ver17)) {                      \
      /* Prior to Clang 18.0 we used this incorrect mangled name */            \
      type_name = "__SVBFloat16_t";                                            \
      Out << "u" << type_name.size() << type_name;                             \
    } else {                                                                   \
      type_name = MangledName;                                                 \
      Out << (type_name == InternalName ? "u" : "") << type_name.size()        \
          << type_name;                                                        \
    }                                                                          \
    break;

TRANSFORM_TYPE_TRAIT_DEF

#define TRANSFORM_TYPE_TRAIT_DEF	(		Enum,
			Trait
	)

Value:

  case UnaryTransformType::Enum:                                               \
    BuiltinName = "__" #Trait;                                                 \
    break;

TYPE [1/2]

#define TYPE	(		CLASS,
			PARENT
	)		void mangleType(const CLASS##Type *T);

Definition at line 570 of file ItaniumMangle.cpp.

TYPE [2/2]

#define TYPE	(		CLASS,
			PARENT
	)

Value:

    case Type::CLASS: \
      mangleType(static_cast<const CLASS##Type*>(ty)); \
      break;

Definition at line 570 of file ItaniumMangle.cpp.

WASM_REF_TYPE

#define WASM_REF_TYPE	(		InternalName,
			MangledName,
			Id,
			SingletonId,
			AS
	)

Value:

  case BuiltinType::Id:                                                        \
    type_name = MangledName;                                                   \
    Out << 'u' << type_name.size() << type_name;                               \
    break;

Function Documentation

asTemplateName()

static TemplateName asTemplateName ( GlobalDecl  GD )

static

Definition at line 1005 of file ItaniumMangle.cpp.

References clang::GlobalDecl::getDecl().

getLValueType()

static QualType getLValueType ( ASTContext &  Ctx, const APValue &  LV  )

static

Definition at line 6257 of file ItaniumMangle.cpp.

References E, clang::ASTContext::getAsArrayType(), clang::APValue::getLValueBase(), clang::APValue::getLValuePath(), clang::ASTContext::getRecordType(), clang::APValue::LValueBase::getType(), clang::ValueDecl::getType(), and clang::T.

getParentOfLocalEntity()

static GlobalDecl getParentOfLocalEntity ( const DeclContext *  DC )

static

Definition at line 1834 of file ItaniumMangle.cpp.

References clang::Ctor_Complete, and clang::Dtor_Complete.

getUnionInitName()

static IdentifierInfo * getUnionInitName ( SourceLocation  UnionLoc, DiagnosticsEngine &  Diags, const FieldDecl *  FD  )

static

Definition at line 6272 of file ItaniumMangle.cpp.

References clang::DiagnosticsEngine::Error, clang::RecordDecl::fields(), clang::Type::getAsCXXRecordDecl(), clang::DiagnosticsEngine::getCustomDiagID(), clang::NamedDecl::getIdentifier(), clang::ValueDecl::getType(), getUnionInitName(), clang::FieldDecl::isBitField(), and clang::DiagnosticsEngine::Report().

Referenced by getUnionInitName().

hasMangledSubstitutionQualifiers()

static bool hasMangledSubstitutionQualifiers ( QualType  T )

static

Determine whether the given type has any qualifiers that are relevant for substitutions.

Definition at line 6753 of file ItaniumMangle.cpp.

References clang::Qualifiers::getCVRQualifiers(), clang::Qualifiers::hasAddressSpace(), clang::Qualifiers::hasUnaligned(), and clang::T.

isParenthesizedADLCallee()

static bool isParenthesizedADLCallee ( const CallExpr *  call )

static

Look at the callee of the given call expression and determine if it's a parenthesized id-expression which would have triggered ADL otherwise.

Definition at line 4517 of file ItaniumMangle.cpp.

References clang::OverloadExpr::decls_begin(), clang::CallExpr::getCallee(), clang::OverloadExpr::getNumDecls(), clang::OverloadExpr::getQualifier(), clang::Expr::IgnoreParens(), and clang::UnresolvedLookupExpr::requiresADL().

isTemplate()

static const GlobalDecl isTemplate ( GlobalDecl  GD, const TemplateArgumentList *&  TemplateArgs  )

static

Definition at line 978 of file ItaniumMangle.cpp.

References clang::GlobalDecl::getDecl(), clang::FunctionDecl::getPrimaryTemplate(), clang::FunctionDecl::getTemplateSpecializationArgs(), and clang::GlobalDecl::getWithDecl().

Referenced by clang::Sema::isAcceptableTagRedeclaration().

isTypeSubstitutable()

static bool isTypeSubstitutable ( Qualifiers  Quals, const Type *  Ty, ASTContext &  Ctx  )

static

Definition at line 2887 of file ItaniumMangle.cpp.

References clang::Type::getAs(), clang::ASTContext::getLangOpts(), clang::Type::isBuiltinType(), clang::Type::isOpenCLSpecificType(), clang::Type::isSpecificBuiltinType(), and clang::Type::isSVESizelessBuiltinType().

isZeroInitialized()

static bool isZeroInitialized ( QualType  T, const APValue &  V  )

static

Determine whether a given value is equivalent to zero-initialization for the purpose of discarding a trailing portion of a 'tl' mangling.

Note that this is not in general equivalent to determining whether the value has an all-zeroes bit pattern.

Definition at line 6172 of file ItaniumMangle.cpp.

References clang::APValue::AddrLabelDiff, clang::APValue::Array, clang::CXXRecordDecl::bases(), clang::Type::castAs(), clang::APValue::ComplexFloat, clang::APValue::ComplexInt, clang::declaresSameEntity(), clang::RecordDecl::fields(), clang::APValue::FixedPoint, clang::APValue::Float, clang::Type::getArrayElementTypeNoTypeQual(), clang::Type::getAsCXXRecordDecl(), clang::VectorType::getElementType(), clang::ValueDecl::getType(), clang::APValue::Indeterminate, clang::APValue::Int, isZeroInitialized(), clang::APValue::LValue, clang::APValue::MemberPointer, clang::APValue::None, clang::APValue::Struct, clang::T, clang::APValue::Union, V, and clang::APValue::Vector.

Referenced by isZeroInitialized().

mangleAArch64VectorBase()

static StringRef mangleAArch64VectorBase ( const BuiltinType *  EltType )

static

Definition at line 3832 of file ItaniumMangle.cpp.

References clang::BuiltinType::getKind().

mangleOverrideDiscrimination()

static void mangleOverrideDiscrimination ( CXXNameMangler &  Mangler, ASTContext &  Context, const ThunkInfo &  Thunk  )

static

Mangles the pointer authentication override attribute for classes that have explicit overrides for the vtable authentication schema.

The override is mangled as a parameterized vendor extension as follows

<type> ::= U "__vtptrauth" I <key> <addressDiscriminated> <extraDiscriminator> E

The extra discriminator encodes the explicit value derived from the override schema, e.g. if the override has specified type based discrimination the encoded value will be the discriminator derived from the type name.

Definition at line 7069 of file ItaniumMangle.cpp.

References clang::ASTContext::baseForVTableAuthentication(), clang::Decl::getAttr(), clang::ASTContext::getLangOpts(), clang::Type::getPointeeCXXRecordDecl(), clang::ASTContext::getPointerAuthVTablePointerDiscriminator(), and clang::ThunkInfo::ThisType.