llvm::MCEncodedFragment Class Reference

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

#include "llvm/MC/MCFragment.h"

Inheritance diagram for llvm::MCEncodedFragment:

Public Member Functions
bool	alignToBundleEnd () const
	Should this fragment be placed at the end of an aligned bundle?
void	setAlignToBundleEnd (bool V)
uint8_t	getBundlePadding () const
	Get the padding size that must be inserted before this fragment.
void	setBundlePadding (uint8_t N)
	Set the padding size for this fragment.
const MCSubtargetInfo *	getSubtargetInfo () const
	Retrieve the MCSubTargetInfo in effect when the instruction was encoded.
void	setHasInstructions (const MCSubtargetInfo &STI)
	Record that the fragment contains instructions with the MCSubtargetInfo in effect when the instruction was encoded.
Public Member Functions inherited from llvm::MCFragment
	MCFragment ()=delete
	MCFragment (const MCFragment &)=delete
MCFragment &	operator= (const MCFragment &)=delete
void	destroy ()
	Destroys the current fragment.
MCFragment *	getNext () const
FragmentType	getKind () const
MCSection *	getParent () const
void	setParent (MCSection *Value)
const MCSymbol *	getAtom () const
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.
void	dump () const

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

Protected Member Functions
	MCEncodedFragment (MCFragment::FragmentType FType, bool HasInstructions)
Protected Member Functions inherited from llvm::MCFragment
	MCFragment (FragmentType Kind, bool HasInstructions)

Protected Attributes
const MCSubtargetInfo *	STI = nullptr
	The MCSubtargetInfo in effect when the instruction was encoded.
Protected Attributes inherited from llvm::MCFragment
bool	HasInstructions: 1
	Used by subclasses for better packing.
bool	AlignToBundleEnd: 1
bool	LinkerRelaxable: 1
	MCDataFragment.
bool	AllowAutoPadding: 1
	MCRelaxableFragment: x86-specific.

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

Detailed Description

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

Definition at line 124 of file MCFragment.h.

Constructor & Destructor Documentation

MCEncodedFragment()

llvm::MCEncodedFragment::MCEncodedFragment ( MCFragment::FragmentType  FType, bool  HasInstructions  )

inlineprotected

Definition at line 128 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 151 of file MCFragment.h.

References llvm::MCFragment::AlignToBundleEnd.

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

classof()

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

inlinestatic

Definition at line 136 of file MCFragment.h.

References F, llvm::MCFragment::FT_Data, llvm::MCFragment::FT_Dwarf, llvm::MCFragment::FT_DwarfFrame, llvm::MCFragment::FT_PseudoProbe, and llvm::MCFragment::FT_Relaxable.

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 159 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 167 of file MCFragment.h.

References STI.

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

setAlignToBundleEnd()

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

inline

Definition at line 152 of file MCFragment.h.

References llvm::MCFragment::AlignToBundleEnd.

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 163 of file MCFragment.h.

References N.

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

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 171 of file MCFragment.h.

References llvm::MCFragment::HasInstructions, and STI.

Member Data Documentation

STI

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

protected

The MCSubtargetInfo in effect when the instruction was encoded.

It must be non-null for instructions.

Definition at line 133 of file MCFragment.h.

Referenced by getSubtargetInfo(), llvm::MCRelaxableFragment::MCRelaxableFragment(), and setHasInstructions().

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

• include/llvm/MC/MCFragment.h