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/VTableBuilder.h"
#include "clang/AST/RecordLayout.h"
#include "clang/Basic/TargetInfo.h"
#include "llvm/ADT/SmallSet.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 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	isMsLayout (const ASTContext &Context)
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

computeKeyFunction()

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

static

Definition at line 2332 of file RecordLayoutBuilder.cpp.

References clang::TargetCXXABI::canKeyFunctionBeInline(), clang::TargetInfo::getCXXABI(), clang::ASTContext::getLangOpts(), clang::ASTContext::getTargetInfo(), clang::CXXRecordDecl::getTemplateSpecializationKind(), clang::Decl::hasAttr(), clang::TargetInfo::hasPS4DLLImportExport(), 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()

static 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 3608 of file RecordLayoutBuilder.cpp.

References Begin, clang::C, DumpRecordLayout(), clang::RecordDecl::field_begin(), clang::RecordDecl::field_end(), clang::CharUnits::fromQuantity(), clang::ASTRecordLayout::getAlignment(), clang::ASTRecordLayout::getBaseClassOffset(), clang::ASTRecordLayout::getDataSize(), clang::RecordType::getDecl(), 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(), isMsLayout(), PrintBitFieldOffset(), PrintIndentNoOffset(), and PrintOffset().

Referenced by DumpRecordLayout().

getFieldOffset()

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

static

Definition at line 3477 of file RecordLayoutBuilder.cpp.

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

getPaddingDiagFromTagKind()

static 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 2275 of file RecordLayoutBuilder.cpp.

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

isAIXLayout()

static bool isAIXLayout ( const ASTContext &  Context )

static

Definition at line 1540 of file RecordLayoutBuilder.cpp.

References clang::ASTContext::getTargetInfo(), and clang::TargetInfo::getTriple().

isMsLayout()

static bool isMsLayout ( const ASTContext &  Context )

static

Definition at line 2460 of file RecordLayoutBuilder.cpp.

References clang::ASTContext::getAuxTargetInfo(), clang::TargetInfo::getCXXABI(), clang::ASTContext::getLangOpts(), clang::ASTContext::getTargetInfo(), and clang::TargetCXXABI::isMicrosoft().

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

mustSkipTailPadding()

static 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 2421 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()

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

static

Definition at line 3585 of file RecordLayoutBuilder.cpp.

References Begin.

Referenced by DumpRecordLayout().

PrintIndentNoOffset()

static void PrintIndentNoOffset ( raw_ostream &  OS, unsigned  IndentLevel  )

static

Definition at line 3603 of file RecordLayoutBuilder.cpp.

Referenced by DumpRecordLayout().

PrintOffset()

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

static

Definition at line 3579 of file RecordLayoutBuilder.cpp.

Referenced by DumpRecordLayout().

recordUsesEBO()

static bool recordUsesEBO ( const RecordDecl *  RD )

static

Definition at line 2918 of file RecordLayoutBuilder.cpp.

References clang::Decl::getAttr(), and clang::Decl::hasAttr().

RequiresVtordisp()

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

static

Definition at line 3250 of file RecordLayoutBuilder.cpp.

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

Referenced by RequiresVtordisp().

roundUpSizeToCharAlignment()

static uint64_t roundUpSizeToCharAlignment ( uint64_t  Size, const ASTContext &  Context  )

static

Definition at line 1468 of file RecordLayoutBuilder.cpp.

References clang::TargetInfo::getCharAlign(), and clang::ASTContext::getTargetInfo().