#include "CodeGen/AsmPrinter/WasmException.h"

Inheritance diagram for llvm::WasmException:

Public Member Functions
	WasmException (AsmPrinter *A)

void	endModule () override
	Emit all sections that should come after the content.

void	beginFunction (const MachineFunction *MF) override
	Gather pre-function debug information.

void	endFunction (const MachineFunction *MF) override
	Gather post-function debug information.

Public Member Functions inherited from llvm::EHStreamer
	EHStreamer (AsmPrinter *A)

	~EHStreamer () override

Public Member Functions inherited from llvm::AsmPrinterHandler
virtual	~AsmPrinterHandler ()
	Pin vtable to this file.

virtual void	beginModule (Module *M)

virtual void	endModule ()=0
	Emit all sections that should come after the content.

virtual void	beginFunction (const MachineFunction *MF)=0
	Gather pre-function debug information.

virtual void	markFunctionEnd ()

virtual void	endFunction (const MachineFunction *MF)=0
	Gather post-function debug information.

virtual void	beginBasicBlockSection (const MachineBasicBlock &MBB)
	Process the beginning of a new basic-block-section within a function.

virtual void	endBasicBlockSection (const MachineBasicBlock &MBB)
	Process the end of a basic-block-section within a function.

virtual void	beginFunclet (const MachineBasicBlock &MBB, MCSymbol *Sym=nullptr)
	Emit target-specific EH funclet machinery.

virtual void	endFunclet ()

Protected Member Functions
void	computeCallSiteTable (SmallVectorImpl< CallSiteEntry > &CallSites, SmallVectorImpl< CallSiteRange > &CallSiteRanges, const SmallVectorImpl< const LandingPadInfo * > &LandingPads, const SmallVectorImpl< unsigned > &FirstActions) override
	Compute the call-site table and the call-site ranges.

Protected Member Functions inherited from llvm::EHStreamer
void	computeActionsTable (const SmallVectorImpl< const LandingPadInfo * > &LandingPads, SmallVectorImpl< ActionEntry > &Actions, SmallVectorImpl< unsigned > &FirstActions)
	Compute the actions table and gather the first action index for each landing pad site.

void	computePadMap (const SmallVectorImpl< const LandingPadInfo * > &LandingPads, RangeMapType &PadMap)

virtual void	computeCallSiteTable (SmallVectorImpl< CallSiteEntry > &CallSites, SmallVectorImpl< CallSiteRange > &CallSiteRanges, const SmallVectorImpl< const LandingPadInfo * > &LandingPads, const SmallVectorImpl< unsigned > &FirstActions)
	Compute the call-site table and the call-site ranges.

MCSymbol *	emitExceptionTable ()
	Emit landing pads and actions.

virtual void	emitTypeInfos (unsigned TTypeEncoding, MCSymbol *TTBaseLabel)

Additional Inherited Members
Static Public Member Functions inherited from llvm::EHStreamer
static bool	callToNoUnwindFunction (const MachineInstr *MI)
	Return ‘true’ if this is a call to a function marked ‘nounwind’.

Protected Types inherited from llvm::EHStreamer
using	RangeMapType = DenseMap< MCSymbol *, PadRange >

Static Protected Member Functions inherited from llvm::EHStreamer
static unsigned	sharedTypeIDs (const LandingPadInfo L, const LandingPadInfo R)
	How many leading type ids two landing pads have in common.

static bool	isFilterEHSelector (int Selector)

static bool	isCleanupEHSelector (int Selector)

static bool	isCatchEHSelector (int Selector)

Protected Attributes inherited from llvm::EHStreamer
AsmPrinter *	Asm
	Target of directive emission.

MachineModuleInfo *	MMI
	Collected machine module information.

Detailed Description

Definition at line 25 of file WasmException.h.

Constructor & Destructor Documentation

◆ WasmException()

llvm::WasmException::WasmException ( AsmPrinter * A )

inline

Definition at line 27 of file WasmException.h.

Member Function Documentation

◆ beginFunction()

void llvm::WasmException::beginFunction ( const MachineFunction * MF )

inlineoverridevirtual

Gather pre-function debug information.

Every beginFunction(MF) call should be followed by an endFunction(MF) call.

Implements llvm::AsmPrinterHandler.

Definition at line 30 of file WasmException.h.

◆ computeCallSiteTable()

void WasmException::computeCallSiteTable	(	SmallVectorImpl< CallSiteEntry > &	CallSites,
		SmallVectorImpl< CallSiteRange > &	CallSiteRanges,
		const SmallVectorImpl< const LandingPadInfo * > &	LandingPads,
		const SmallVectorImpl< unsigned > &	FirstActions
	)

overrideprotectedvirtual

Compute the call-site table and the call-site ranges.

Compute the call-site table.

The entry for an invoke has a try-range containing the call, a non-zero landing pad and an appropriate action. The entry for an ordinary call has a try-range containing the call and zero for the landing pad and the action. Calls marked 'nounwind' have no entry and must not be contained in the try-range of any entry - they form gaps in the table. Entries must be ordered by try-range address. CallSiteRanges vector is only populated for Itanium exception handling.

The entry for an invoke has a try-range containing the call, a non-zero landing pad, and an appropriate action. The entry for an ordinary call has a try-range containing the call and zero for the landing pad and the action. Calls marked 'nounwind' have no entry and must not be contained in the try-range of any entry - they form gaps in the table. Entries must be ordered by try-range address.

Call-sites are split into one or more call-site ranges associated with different sections of the function.

Without -basic-block-sections, all call-sites are grouped into one call-site-range corresponding to the function section.
With -basic-block-sections, one call-site range is created for each section, with its FragmentBeginLabel and FragmentEndLabel respectively

Reimplemented from llvm::EHStreamer.

Definition at line 78 of file WasmException.cpp.

References llvm::EHStreamer::Asm, llvm::MachineFunction::getWasmLandingPadIndex(), llvm::MachineFunction::hasWasmLandingPadIndex(), I, Info, llvm::AsmPrinter::MF, N, llvm::SmallVectorImpl< T >::resize(), and llvm::SmallVectorBase< Size_T >::size().