RecordLayoutBuilder.cpp File Reference

#include "clang/AST/ASTContext.h"
#include "clang/AST/ASTDiagnostic.h"
#include "clang/AST/Attr.h"
#include "clang/AST/CXXInheritance.h"
#include "clang/AST/Decl.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/Expr.h"
#include "clang/AST/RecordLayout.h"
#include "clang/AST/VTableBuilder.h"
#include "clang/Basic/TargetInfo.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/MathExtras.h"

Go to the source code of this file.

Functions
static uint64_t	roundUpSizeToCharAlignment (uint64_t Size, const ASTContext &Context)
static bool	isAIXLayout (const ASTContext &Context)
static unsigned	getPaddingDiagFromTagKind (TagTypeKind Tag)
	Get diagnostic select index for tag kind for field padding diagnostic message.
static void	CheckFieldPadding (const ASTContext &Context, bool IsUnion, uint64_t Offset, uint64_t UnpaddedOffset, const FieldDecl *D)
static const CXXMethodDecl *	computeKeyFunction (ASTContext &Context, const CXXRecordDecl *RD)
static bool	mustSkipTailPadding (TargetCXXABI ABI, const CXXRecordDecl *RD)
	Does the target C++ ABI require us to skip over the tail-padding of the given class (considering it as a base class) when allocating objects?
static bool	recordUsesEBO (const RecordDecl *RD)
static bool	RequiresVtordisp (const llvm::SmallPtrSetImpl< const CXXRecordDecl * > &BasesWithOverriddenMethods, const CXXRecordDecl *RD)
static uint64_t	getFieldOffset (const ASTContext &C, const FieldDecl *FD)
static void	PrintOffset (raw_ostream &OS, CharUnits Offset, unsigned IndentLevel)
static void	PrintBitFieldOffset (raw_ostream &OS, CharUnits Offset, unsigned Begin, unsigned Width, unsigned IndentLevel)
static void	PrintIndentNoOffset (raw_ostream &OS, unsigned IndentLevel)
static void	DumpRecordLayout (raw_ostream &OS, const RecordDecl *RD, const ASTContext &C, CharUnits Offset, unsigned IndentLevel, const char *Description, bool PrintSizeInfo, bool IncludeVirtualBases)

Function Documentation

CheckFieldPadding()

void CheckFieldPadding ( const ASTContext & Context, bool IsUnion, uint64_t Offset, uint64_t UnpaddedOffset, const FieldDecl * D )

static

Definition at line 2276 of file RecordLayoutBuilder.cpp.

References clang::NamedDecl::getIdentifier(), clang::Decl::getLocation(), getPaddingDiagFromTagKind(), clang::FieldDecl::getParent(), clang::TagDecl::getTagKind(), clang::isa(), clang::FieldDecl::isBitField(), and clang::SourceLocation::isInvalid().

computeKeyFunction()

const CXXMethodDecl * computeKeyFunction ( ASTContext & Context, const CXXRecordDecl * RD )

static

Definition at line 2329 of file RecordLayoutBuilder.cpp.

References clang::CXXRecordDecl::getTemplateSpecializationKind(), clang::Decl::hasAttr(), clang::NamedDecl::isExternallyVisible(), clang::FunctionDecl::isInlineSpecified(), clang::CXXRecordDecl::isPolymorphic(), clang::CXXRecordDecl::methods(), clang::TSK_ExplicitInstantiationDeclaration, clang::TSK_ExplicitInstantiationDefinition, and clang::TSK_ImplicitInstantiation.

Referenced by clang::ASTContext::getCurrentKeyFunction().

DumpRecordLayout()

void DumpRecordLayout ( raw_ostream & OS, const RecordDecl * RD, const ASTContext & C, CharUnits Offset, unsigned IndentLevel, const char * Description, bool PrintSizeInfo, bool IncludeVirtualBases )

static

Definition at line 3620 of file RecordLayoutBuilder.cpp.

References clang::C, DumpRecordLayout(), clang::RecordDecl::fields(), clang::CharUnits::fromQuantity(), clang::ASTRecordLayout::getAlignment(), clang::ASTRecordLayout::getBaseClassOffset(), clang::ASTRecordLayout::getDataSize(), clang::ASTRecordLayout::getFieldOffset(), clang::ASTRecordLayout::getNonVirtualAlignment(), clang::ASTRecordLayout::getNonVirtualSize(), clang::ASTRecordLayout::getPreferredAlignment(), clang::ASTRecordLayout::getPreferredNVAlignment(), clang::ASTRecordLayout::getPrimaryBase(), clang::CharUnits::getQuantity(), clang::ASTRecordLayout::getSize(), clang::ASTRecordLayout::getVBaseClassOffset(), clang::ASTRecordLayout::getVBaseOffsetsMap(), clang::ASTRecordLayout::getVBPtrOffset(), clang::ASTRecordLayout::hasOwnVBPtr(), clang::ASTRecordLayout::hasOwnVFPtr(), IndentLevel, PrintBitFieldOffset(), PrintIndentNoOffset(), and PrintOffset().

Referenced by clang::ASTContext::DumpRecordLayout(), DumpRecordLayout(), and clang::ASTContext::getASTRecordLayout().

getFieldOffset()

uint64_t getFieldOffset ( const ASTContext & C, const FieldDecl * FD )

static

Definition at line 3515 of file RecordLayoutBuilder.cpp.

References clang::C, clang::FieldDecl::getFieldIndex(), clang::ASTRecordLayout::getFieldOffset(), and clang::FieldDecl::getParent().

Referenced by clang::ASTContext::getFieldOffset(), and clang::interp::Pointer::toAPValue().

getPaddingDiagFromTagKind()

unsigned getPaddingDiagFromTagKind ( TagTypeKind Tag )

static

Get diagnostic select index for tag kind for field padding diagnostic message.

WARNING: Indexes apply to particular diagnostics only!

Returns

diagnostic select index.

Definition at line 2264 of file RecordLayoutBuilder.cpp.

References clang::Class, clang::Interface, and clang::Struct.

Referenced by CheckFieldPadding().

isAIXLayout()

bool isAIXLayout ( const ASTContext & Context )

static

Definition at line 1528 of file RecordLayoutBuilder.cpp.

mustSkipTailPadding()

bool mustSkipTailPadding ( TargetCXXABI ABI, const CXXRecordDecl * RD )

static

Does the target C++ ABI require us to skip over the tail-padding of the given class (considering it as a base class) when allocating objects?

Definition at line 2418 of file RecordLayoutBuilder.cpp.

References clang::TargetCXXABI::AlwaysUseTailPadding, clang::TargetCXXABI::getTailPaddingUseRules(), clang::CXXRecordDecl::isCXX11StandardLayout(), clang::CXXRecordDecl::isPOD(), clang::CXXRecordDecl::isTrivial(), clang::TargetCXXABI::UseTailPaddingUnlessPOD03, and clang::TargetCXXABI::UseTailPaddingUnlessPOD11.

Referenced by clang::ASTContext::getASTRecordLayout().

PrintBitFieldOffset()

void PrintBitFieldOffset ( raw_ostream & OS, CharUnits Offset, unsigned Begin, unsigned Width, unsigned IndentLevel )

static

Definition at line 3597 of file RecordLayoutBuilder.cpp.

References IndentLevel.

Referenced by DumpRecordLayout().

PrintIndentNoOffset()

void PrintIndentNoOffset ( raw_ostream & OS, unsigned IndentLevel )

static

Definition at line 3615 of file RecordLayoutBuilder.cpp.

References IndentLevel.

Referenced by DumpRecordLayout().

PrintOffset()

void PrintOffset ( raw_ostream & OS, CharUnits Offset, unsigned IndentLevel )

static

Definition at line 3591 of file RecordLayoutBuilder.cpp.

References IndentLevel.

Referenced by DumpRecordLayout().

recordUsesEBO()

bool recordUsesEBO ( const RecordDecl * RD )

static

Definition at line 2906 of file RecordLayoutBuilder.cpp.

References clang::Decl::getAttr(), clang::Decl::hasAttr(), clang::isa(), and clang::LangOptionsBase::MSVC2015.

RequiresVtordisp()

bool RequiresVtordisp ( const llvm::SmallPtrSetImpl< const CXXRecordDecl * > & BasesWithOverriddenMethods, const CXXRecordDecl * RD )

static

Definition at line 3281 of file RecordLayoutBuilder.cpp.

References clang::CXXRecordDecl::bases(), and RequiresVtordisp().

Referenced by RequiresVtordisp().

roundUpSizeToCharAlignment()

uint64_t roundUpSizeToCharAlignment ( uint64_t Size, const ASTContext & Context )

static

Definition at line 1452 of file RecordLayoutBuilder.cpp.