A cleanup scope which generates the cleanup blocks lazily. More...

#include <CGCleanup.h>

Inheritance diagram for clang::CodeGen::EHCleanupScope:

Collaboration diagram for clang::CodeGen::EHCleanupScope:

Classes
struct	ExtInfo
Public Member Functions
size_t	getAllocatedSize () const
	EHCleanupScope (bool isNormal, bool isEH, bool isActive, unsigned cleanupSize, unsigned fixupDepth, EHScopeStack::stable_iterator enclosingNormal, EHScopeStack::stable_iterator enclosingEH)
void	Destroy ()
	~EHCleanupScope () LLVM_DELETED_FUNCTION
bool	isNormalCleanup () const
llvm::BasicBlock *	getNormalBlock () const
void	setNormalBlock (llvm::BasicBlock *BB)
bool	isEHCleanup () const
llvm::BasicBlock *	getEHBlock () const
void	setEHBlock (llvm::BasicBlock *BB)
bool	isActive () const
void	setActive (bool A)
llvm::AllocaInst *	getActiveFlag () const
void	setActiveFlag (llvm::AllocaInst *Var)
void	setTestFlagInNormalCleanup ()
bool	shouldTestFlagInNormalCleanup () const
void	setTestFlagInEHCleanup ()
bool	shouldTestFlagInEHCleanup () const
unsigned	getFixupDepth () const
EHScopeStack::stable_iterator	getEnclosingNormalCleanup () const
size_t	getCleanupSize () const
void *	getCleanupBuffer ()
EHScopeStack::Cleanup *	getCleanup ()
bool	hasBranches () const
	True if this cleanup scope has any branch-afters or branch-throughs.
void	addBranchAfter (llvm::ConstantInt Index, llvm::BasicBlock Block)
unsigned	getNumBranchAfters () const
	Return the number of unique branch-afters on this scope.
llvm::BasicBlock *	getBranchAfterBlock (unsigned I) const
llvm::ConstantInt *	getBranchAfterIndex (unsigned I) const
bool	addBranchThrough (llvm::BasicBlock *Block)
bool	hasBranchThroughs () const
	Determines if this cleanup scope has any branch throughs.
Static Public Member Functions
static size_t	getSizeForCleanupSize (size_t Size)
static bool	classof (const EHScope *Scope)

Detailed Description

A cleanup scope which generates the cleanup blocks lazily.

Definition at line 216 of file CGCleanup.h.

Constructor & Destructor Documentation

clang::CodeGen::EHCleanupScope::EHCleanupScope	(	bool	isNormal,
		bool	isEH,
		bool	isActive,
		unsigned	cleanupSize,
		unsigned	fixupDepth,
		EHScopeStack::stable_iterator	enclosingNormal,
		EHScopeStack::stable_iterator	enclosingEH
	)		`[inline]`

Definition at line 266 of file CGCleanup.h.

References clang::CodeGen::EHScope::CleanupBits, and isActive().

Referenced by getAllocatedSize(), and getSizeForCleanupSize().

clang::CodeGen::EHCleanupScope::~EHCleanupScope ( )

Member Function Documentation

void clang::CodeGen::EHCleanupScope::addBranchAfter	(	llvm::ConstantInt *	Index,
		llvm::BasicBlock *	Block
	)		`[inline]`

Add a branch-after to this cleanup scope. A branch-after is a branch from a point protected by this (normal) cleanup to a point in the normal cleanup scope immediately containing it. For example, for (;;) { A a; break; } contains a branch-after.

Branch-afters each have their own destination out of the cleanup, guaranteed distinct from anything else threaded through it. Therefore branch-afters usually force a switch after the cleanup.

Definition at line 343 of file CGCleanup.h.

Referenced by clang::CodeGen::CodeGenFunction::EmitBranchThroughCleanup().

bool clang::CodeGen::EHCleanupScope::addBranchThrough ( llvm::BasicBlock * Block ) [inline]

Add a branch-through to this cleanup scope. A branch-through is a branch from a scope protected by this (normal) cleanup to an enclosing scope other than the immediately-enclosing normal cleanup scope.

In the following example, the branch through B's scope is a branch-through, while the branch through A's scope is a branch-after: for (;;) { A a; B b; break; }

All branch-throughs have a common destination out of the cleanup, one possibly shared with the fall-through. Therefore branch-throughs usually don't force a switch after the cleanup.

Returns:: true if the branch-through was new to this scope

Definition at line 380 of file CGCleanup.h.

Referenced by clang::CodeGen::CodeGenFunction::EmitBranchThroughCleanup().

static bool clang::CodeGen::EHCleanupScope::classof ( const EHScope * Scope ) [inline, static]

Definition at line 390 of file CGCleanup.h.

References clang::CodeGen::EHScope::Cleanup, and clang::CodeGen::EHScope::getKind().

void clang::CodeGen::EHCleanupScope::Destroy ( ) [inline]

Definition at line 283 of file CGCleanup.h.

Referenced by clang::CodeGen::EHScopeStack::popCleanup().

llvm::AllocaInst* clang::CodeGen::EHCleanupScope::getActiveFlag ( ) const [inline]

Definition at line 300 of file CGCleanup.h.

Referenced by clang::CodeGen::CodeGenFunction::initFullExprCleanup(), clang::CodeGen::CodeGenFunction::PopCleanupBlock(), and SetupCleanupBlockActivation().

size_t clang::CodeGen::EHCleanupScope::getAllocatedSize ( ) const [inline]

Definition at line 262 of file CGCleanup.h.

References clang::CodeGen::EHScope::CleanupBits, and EHCleanupScope().

Referenced by clang::CodeGen::EHScopeStack::iterator::operator++(), and clang::CodeGen::EHScopeStack::popCleanup().

llvm::BasicBlock* clang::CodeGen::EHCleanupScope::getBranchAfterBlock ( unsigned I ) const [inline]

Definition at line 355 of file CGCleanup.h.

References getNumBranchAfters().

Referenced by clang::CodeGen::CodeGenFunction::PopCleanupBlock().

llvm::ConstantInt* clang::CodeGen::EHCleanupScope::getBranchAfterIndex ( unsigned I ) const [inline]

Definition at line 360 of file CGCleanup.h.

References getNumBranchAfters().

Referenced by clang::CodeGen::CodeGenFunction::PopCleanupBlock().

EHScopeStack::Cleanup* clang::CodeGen::EHCleanupScope::getCleanup ( ) [inline]

Definition at line 325 of file CGCleanup.h.

References getCleanupBuffer().

void* clang::CodeGen::EHCleanupScope::getCleanupBuffer ( ) [inline]

Definition at line 323 of file CGCleanup.h.

Referenced by getCleanup(), and clang::CodeGen::CodeGenFunction::PopCleanupBlock().

size_t clang::CodeGen::EHCleanupScope::getCleanupSize ( ) const [inline]

Definition at line 322 of file CGCleanup.h.

References clang::CodeGen::EHScope::CleanupBits.

Referenced by clang::CodeGen::CodeGenFunction::PopCleanupBlock().

llvm::BasicBlock* clang::CodeGen::EHCleanupScope::getEHBlock ( ) const [inline]

Definition at line 294 of file CGCleanup.h.

References clang::CodeGen::EHScope::getCachedEHDispatchBlock().

EHScopeStack::stable_iterator clang::CodeGen::EHCleanupScope::getEnclosingNormalCleanup ( ) const [inline]

Definition at line 318 of file CGCleanup.h.

Referenced by clang::CodeGen::CodeGenFunction::EmitBranchThroughCleanup(), clang::CodeGen::EHScopeStack::getInnermostActiveNormalCleanup(), clang::CodeGen::EHScopeStack::popCleanup(), clang::CodeGen::CodeGenFunction::PopCleanupBlock(), and clang::CodeGen::CodeGenFunction::PopCleanupBlocks().

unsigned clang::CodeGen::EHCleanupScope::getFixupDepth ( ) const [inline]

Definition at line 317 of file CGCleanup.h.

References clang::CodeGen::EHScope::CleanupBits.

Referenced by clang::CodeGen::CodeGenFunction::PopCleanupBlock().

llvm::BasicBlock* clang::CodeGen::EHCleanupScope::getNormalBlock ( ) const [inline]

Definition at line 290 of file CGCleanup.h.

Referenced by CreateNormalEntry(), destroyOptimisticNormalEntry(), and clang::CodeGen::CodeGenFunction::PopCleanupBlock().

unsigned clang::CodeGen::EHCleanupScope::getNumBranchAfters ( ) const [inline]

Return the number of unique branch-afters on this scope.

Definition at line 351 of file CGCleanup.h.

Referenced by getBranchAfterBlock(), getBranchAfterIndex(), and clang::CodeGen::CodeGenFunction::PopCleanupBlock().

static size_t clang::CodeGen::EHCleanupScope::getSizeForCleanupSize ( size_t Size ) [inline, static]

Gets the size required for a lazy cleanup scope with the given cleanup-data requirements.

Definition at line 258 of file CGCleanup.h.

References EHCleanupScope().

bool clang::CodeGen::EHCleanupScope::hasBranches ( ) const [inline]

True if this cleanup scope has any branch-afters or branch-throughs.

Definition at line 330 of file CGCleanup.h.

Referenced by clang::CodeGen::CodeGenFunction::PopCleanupBlock().

bool clang::CodeGen::EHCleanupScope::hasBranchThroughs ( ) const [inline]

Determines if this cleanup scope has any branch throughs.

Definition at line 385 of file CGCleanup.h.

Referenced by clang::CodeGen::CodeGenFunction::PopCleanupBlock().

bool clang::CodeGen::EHCleanupScope::isActive ( ) const [inline]

Definition at line 297 of file CGCleanup.h.

References clang::CodeGen::EHScope::CleanupBits.

Referenced by EHCleanupScope(), clang::CodeGen::EHScopeStack::getInnermostActiveEHScope(), clang::CodeGen::EHScopeStack::getInnermostActiveNormalCleanup(), and clang::CodeGen::CodeGenFunction::PopCleanupBlock().

bool clang::CodeGen::EHCleanupScope::isEHCleanup ( ) const [inline]

Definition at line 293 of file CGCleanup.h.

References clang::CodeGen::EHScope::CleanupBits.

Referenced by clang::CodeGen::CodeGenFunction::initFullExprCleanup(), clang::CodeGen::CodeGenFunction::PopCleanupBlock(), and SetupCleanupBlockActivation().

bool clang::CodeGen::EHCleanupScope::isNormalCleanup ( ) const [inline]

Definition at line 289 of file CGCleanup.h.

References clang::CodeGen::EHScope::CleanupBits.

Referenced by CreateNormalEntry(), clang::CodeGen::CodeGenFunction::EmitBranchThroughCleanup(), clang::CodeGen::CodeGenFunction::initFullExprCleanup(), clang::CodeGen::CodeGenFunction::PopCleanupBlock(), and SetupCleanupBlockActivation().

void clang::CodeGen::EHCleanupScope::setActive ( bool A ) [inline]

Definition at line 298 of file CGCleanup.h.

References clang::CodeGen::EHScope::CleanupBits.

void clang::CodeGen::EHCleanupScope::setActiveFlag ( llvm::AllocaInst * Var ) [inline]

Definition at line 301 of file CGCleanup.h.

Referenced by clang::CodeGen::CodeGenFunction::initFullExprCleanup(), and SetupCleanupBlockActivation().

void clang::CodeGen::EHCleanupScope::setEHBlock ( llvm::BasicBlock * BB ) [inline]

Definition at line 295 of file CGCleanup.h.

References clang::CodeGen::EHScope::setCachedEHDispatchBlock().

void clang::CodeGen::EHCleanupScope::setNormalBlock ( llvm::BasicBlock * BB ) [inline]

Definition at line 291 of file CGCleanup.h.

Referenced by CreateNormalEntry().

void clang::CodeGen::EHCleanupScope::setTestFlagInEHCleanup ( ) [inline]

Definition at line 310 of file CGCleanup.h.

References clang::CodeGen::EHScope::CleanupBits.

Referenced by clang::CodeGen::CodeGenFunction::initFullExprCleanup(), and SetupCleanupBlockActivation().

void clang::CodeGen::EHCleanupScope::setTestFlagInNormalCleanup ( ) [inline]

Definition at line 303 of file CGCleanup.h.

References clang::CodeGen::EHScope::CleanupBits.

Referenced by clang::CodeGen::CodeGenFunction::initFullExprCleanup(), and SetupCleanupBlockActivation().

bool clang::CodeGen::EHCleanupScope::shouldTestFlagInEHCleanup ( ) const [inline]

Definition at line 313 of file CGCleanup.h.

References clang::CodeGen::EHScope::CleanupBits.

Referenced by clang::CodeGen::CodeGenFunction::PopCleanupBlock().

bool clang::CodeGen::EHCleanupScope::shouldTestFlagInNormalCleanup ( ) const [inline]

Definition at line 306 of file CGCleanup.h.

References clang::CodeGen::EHScope::CleanupBits.

Referenced by clang::CodeGen::CodeGenFunction::PopCleanupBlock().

The documentation for this class was generated from the following file:

CGCleanup.h

Classes

Public Member Functions

Static Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation