Interface implemented by fragments that contain encoded instructions and/or data. More...

#include "llvm/MC/MCFragment.h"

Inheritance diagram for llvm::MCEncodedFragment:

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Collaboration diagram for llvm::MCEncodedFragment:

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Public Member Functions
bool	alignToBundleEnd () const
	Should this fragment be placed at the end of an aligned bundle? More...

void	setAlignToBundleEnd (bool V)

uint8_t	getBundlePadding () const
	Get the padding size that must be inserted before this fragment. More...

void	setBundlePadding (uint8_t N)
	Set the padding size for this fragment. More...

const MCSubtargetInfo *	getSubtargetInfo () const
	Retrieve the MCSubTargetInfo in effect when the instruction was encoded. More...

void	setHasInstructions (const MCSubtargetInfo &STI)
	Record that the fragment contains instructions with the MCSubtargetInfo in effect when the instruction was encoded. More...

Public Member Functions inherited from llvm::MCFragment
	MCFragment ()=delete

	MCFragment (const MCFragment &)=delete

MCFragment &	operator= (const MCFragment &)=delete

void	destroy ()
	Destroys the current fragment. More...

FragmentType	getKind () const

MCSection *	getParent () const

void	setParent (MCSection *Value)

const MCSymbol *	getAtom () const

void	setAtom (const MCSymbol *Value)

unsigned	getLayoutOrder () const

void	setLayoutOrder (unsigned Value)

bool	hasInstructions () const
	Does this fragment have instructions emitted into it? By default this is false, but specific fragment types may set it to true. More...

bool	isDummy () const
	Return true if given frgment has FT_Dummy type. More...

void	dump () const

Public Member Functions inherited from llvm::ilist_node_with_parent< MCFragment, MCSection >
MCFragment *	getPrevNode ()

const MCFragment *	getPrevNode () const
	Get the previous node, or `nullptr` for the list head. More...

MCFragment *	getNextNode ()
	Get the next node, or `nullptr` for the list tail. More...

const MCFragment *	getNextNode () const
	Get the next node, or `nullptr` for the list tail. More...

Public Member Functions inherited from llvm::ilist_node_impl< ilist_detail::compute_node_options< MCFragment, Options... >::type >
self_iterator	getIterator ()

const_self_iterator	getIterator () const

reverse_self_iterator	getReverseIterator ()

const_reverse_self_iterator	getReverseIterator () const

bool	isSentinel () const
	Check whether this is the sentinel node. More...

Static Public Member Functions
static bool	classof (const MCFragment *F)

Protected Member Functions
	MCEncodedFragment (MCFragment::FragmentType FType, bool HasInstructions, MCSection *Sec)

Protected Member Functions inherited from llvm::MCFragment
	MCFragment (FragmentType Kind, bool HasInstructions, MCSection *Parent=nullptr)

	~MCFragment ()

Protected Member Functions inherited from llvm::ilist_node_with_parent< MCFragment, MCSection >
	ilist_node_with_parent ()=default

Protected Member Functions inherited from llvm::ilist_node_impl< ilist_detail::compute_node_options< MCFragment, Options... >::type >
	ilist_node_impl ()=default

Protected Attributes
const MCSubtargetInfo *	STI = nullptr
	STI - The MCSubtargetInfo in effect when the instruction was encoded. More...

Protected Attributes inherited from llvm::MCFragment
bool	HasInstructions

Additional Inherited Members
Public Types inherited from llvm::MCFragment
enum	FragmentType : uint8_t { FT_Align, FT_Data, FT_CompactEncodedInst, FT_Fill, FT_Relaxable, FT_Org, FT_Dwarf, FT_DwarfFrame, FT_LEB, FT_Padding, FT_SymbolId, FT_CVInlineLines, FT_CVDefRange, FT_Dummy }

Protected Types inherited from llvm::ilist_node_impl< ilist_detail::compute_node_options< MCFragment, Options... >::type >
using	self_iterator = ilist_iterator< ilist_detail::compute_node_options< MCFragment, Options... >::type, false, false >

using	const_self_iterator = ilist_iterator< ilist_detail::compute_node_options< MCFragment, Options... >::type, false, true >

using	reverse_self_iterator = ilist_iterator< ilist_detail::compute_node_options< MCFragment, Options... >::type, true, false >

using	const_reverse_self_iterator = ilist_iterator< ilist_detail::compute_node_options< MCFragment, Options... >::type, true, true >

Detailed Description

Interface implemented by fragments that contain encoded instructions and/or data.

Definition at line 128 of file MCFragment.h.

Constructor & Destructor Documentation

◆ MCEncodedFragment()

llvm::MCEncodedFragment::MCEncodedFragment	(	MCFragment::FragmentType	FType,
		bool	HasInstructions,
		MCSection *	Sec
	)

inlineprotected

Definition at line 135 of file MCFragment.h.

Member Function Documentation

◆ alignToBundleEnd()

bool llvm::MCEncodedFragment::alignToBundleEnd ( ) const

inline

Should this fragment be placed at the end of an aligned bundle?

Definition at line 158 of file MCFragment.h.

Referenced by llvm::computeBundlePadding(), and llvm::MCAssembler::writeFragmentPadding().

◆ classof()

static bool llvm::MCEncodedFragment::classof ( const MCFragment * F )

inlinestatic

Definition at line 144 of file MCFragment.h.

References llvm::MCFragment::FT_CompactEncodedInst, llvm::MCFragment::FT_Data, llvm::MCFragment::FT_Dwarf, llvm::MCFragment::FT_Relaxable, and llvm::MCFragment::getKind().

◆ getBundlePadding()

uint8_t llvm::MCEncodedFragment::getBundlePadding ( ) const

inline

Get the padding size that must be inserted before this fragment.

Used for bundling. By default, no padding is inserted. Note that padding size is restricted to 8 bits. This is an optimization to reduce the amount of space used for each fragment. In practice, larger padding should never be required.

Definition at line 166 of file MCFragment.h.

Referenced by llvm::MCAssembler::writeFragmentPadding().

◆ getSubtargetInfo()

const MCSubtargetInfo* llvm::MCEncodedFragment::getSubtargetInfo ( ) const

inline

Retrieve the MCSubTargetInfo in effect when the instruction was encoded.

Guaranteed to be non-null if hasInstructions() == true

Definition at line 174 of file MCFragment.h.

Referenced by CanReuseDataFragment(), CheckBundleSubtargets(), llvm::MCAssembler::Finish(), llvm::MCELFStreamer::MCELFStreamer(), and llvm::MCWasmStreamer::~MCWasmStreamer().

◆ setAlignToBundleEnd()

void llvm::MCEncodedFragment::setAlignToBundleEnd ( bool V )

inline

Definition at line 159 of file MCFragment.h.

Referenced by CheckBundleSubtargets(), and llvm::MCELFStreamer::EmitBundleUnlock().

◆ setBundlePadding()

void llvm::MCEncodedFragment::setBundlePadding ( uint8_t N )

inline

Set the padding size for this fragment.

By default it's a no-op, and only some fragments have a meaningful implementation.

Definition at line 170 of file MCFragment.h.

References N.

Referenced by llvm::MCAsmLayout::layoutFragment(), and llvm::MCELFStreamer::MCELFStreamer().

◆ setHasInstructions()

void llvm::MCEncodedFragment::setHasInstructions ( const MCSubtargetInfo & STI )

inline

Record that the fragment contains instructions with the MCSubtargetInfo in effect when the instruction was encoded.

Definition at line 178 of file MCFragment.h.

References llvm::MCFragment::HasInstructions.

Referenced by CheckBundleSubtargets(), llvm::MCWasmStreamer::EmitIdent(), llvm::MCWinCOFFStreamer::EmitInstToData(), llvm::MCELFStreamer::MCELFStreamer(), and llvm::MCWasmStreamer::~MCWasmStreamer().

Member Data Documentation

◆ STI

const MCSubtargetInfo* llvm::MCEncodedFragment::STI = nullptr

protected

STI - The MCSubtargetInfo in effect when the instruction was encoded.

must be non-null for instructions.

Definition at line 141 of file MCFragment.h.

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

include/llvm/MC/MCFragment.h

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ MCEncodedFragment()

Member Function Documentation

◆ alignToBundleEnd()

◆ classof()

◆ getBundlePadding()

◆ getSubtargetInfo()

◆ setAlignToBundleEnd()

◆ setBundlePadding()

◆ setHasInstructions()

Member Data Documentation

◆ STI