LLVM  4.0.0
Public Types | Public Member Functions | Protected Member Functions | Protected Attributes | Friends | List of all members
llvm::MCFragment Class Reference

#include <MCFragment.h>

Inheritance diagram for llvm::MCFragment:
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Collaboration diagram for llvm::MCFragment:
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Public Types

enum  FragmentType : uint8_t {
  FT_Align, FT_Data, FT_CompactEncodedInst, FT_Fill,
  FT_Relaxable, FT_Org, FT_Dwarf, FT_DwarfFrame,
  FT_LEB, FT_SafeSEH, FT_CVInlineLines, FT_CVDefRange,
  FT_Dummy
}
 

Public Member Functions

void destroy ()
 Destroys the current fragment. More...
 
FragmentType getKind () const
 
MCSectiongetParent () const
 
void setParent (MCSection *Value)
 
const MCSymbolgetAtom () 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 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...
 
bool isDummy () const
 Return true if given frgment has FT_Dummy type. More...
 
void dump ()
 
- Public Member Functions inherited from llvm::ilist_node_with_parent< MCFragment, MCSection >
MCFragmentgetPrevNode ()
 
const MCFragmentgetPrevNode () const
 Get the previous node, or nullptr for the list head. More...
 
MCFragmentgetNextNode ()
 Get the next node, or nullptr for the list tail. More...
 
const MCFragmentgetNextNode () 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...
 

Protected Member Functions

 MCFragment (FragmentType Kind, bool HasInstructions, uint8_t BundlePadding, 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

bool HasInstructions
 

Friends

class MCAsmLayout
 

Additional Inherited Members

- Protected Types inherited from llvm::ilist_node_impl< ilist_detail::compute_node_options< MCFragment, Options...>::type >
typedef ilist_iterator
< ilist_detail::compute_node_options
< MCFragment, Options...>
::type, false, false
self_iterator
 
typedef ilist_iterator
< ilist_detail::compute_node_options
< MCFragment, Options...>
::type, false, true
const_self_iterator
 
typedef ilist_iterator
< ilist_detail::compute_node_options
< MCFragment, Options...>
::type, true, false
reverse_self_iterator
 
typedef ilist_iterator
< ilist_detail::compute_node_options
< MCFragment, Options...>
::type, true, true
const_reverse_self_iterator
 

Detailed Description

Definition at line 25 of file MCFragment.h.

Member Enumeration Documentation

Enumerator
FT_Align 
FT_Data 
FT_CompactEncodedInst 
FT_Fill 
FT_Relaxable 
FT_Org 
FT_Dwarf 
FT_DwarfFrame 
FT_LEB 
FT_SafeSEH 
FT_CVInlineLines 
FT_CVDefRange 
FT_Dummy 

Definition at line 33 of file MCFragment.h.

Constructor & Destructor Documentation

MCFragment::MCFragment ( FragmentType  Kind,
bool  HasInstructions,
uint8_t  BundlePadding,
MCSection Parent = nullptr 
)
protected
MCFragment::~MCFragment ( )
protected

Definition at line 237 of file MCFragment.cpp.

Member Function Documentation

bool llvm::MCFragment::alignToBundleEnd ( ) const
inline

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

Definition at line 111 of file MCFragment.h.

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

void MCFragment::destroy ( )

Destroys the current fragment.

This must be used instead of delete as MCFragment is non-virtual. This method will dispatch to the appropriate subclass.

Definition at line 248 of file MCFragment.cpp.

References FT_Align, FT_CompactEncodedInst, FT_CVDefRange, FT_CVInlineLines, FT_Data, FT_Dummy, FT_Dwarf, FT_DwarfFrame, FT_Fill, FT_LEB, FT_Org, FT_Relaxable, and FT_SafeSEH.

LLVM_DUMP_METHOD void MCFragment::dump ( )
const MCSymbol* llvm::MCFragment::getAtom ( ) const
inline
uint8_t llvm::MCFragment::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 119 of file MCFragment.h.

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

FragmentType llvm::MCFragment::getKind ( ) const
inline
unsigned llvm::MCFragment::getLayoutOrder ( ) const
inline

Definition at line 103 of file MCFragment.h.

MCSection* llvm::MCFragment::getParent ( ) const
inline
bool llvm::MCFragment::hasInstructions ( ) const
inline

Does this fragment have instructions emitted into it? By default this is false, but specific fragment types may set it to true.

Definition at line 108 of file MCFragment.h.

References HasInstructions.

Referenced by dump(), llvm::MCObjectStreamer::getOrCreateDataFragment(), llvm::MCAsmLayout::layoutFragment(), and llvm::MCAssembler::writeFragmentPadding().

bool llvm::MCFragment::isDummy ( ) const
inline

Return true if given frgment has FT_Dummy type.

Definition at line 126 of file MCFragment.h.

References FT_Dummy, and Kind.

Referenced by MCFragment().

void llvm::MCFragment::setAlignToBundleEnd ( bool  V)
inline

Definition at line 112 of file MCFragment.h.

Referenced by llvm::MCELFStreamer::EmitBundleUnlock().

void llvm::MCFragment::setAtom ( const MCSymbol Value)
inline

Definition at line 101 of file MCFragment.h.

void llvm::MCFragment::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 123 of file MCFragment.h.

References N.

Referenced by llvm::MCAsmLayout::layoutFragment().

void llvm::MCFragment::setLayoutOrder ( unsigned  Value)
inline

Definition at line 104 of file MCFragment.h.

void llvm::MCFragment::setParent ( MCSection Value)
inline

Friends And Related Function Documentation

friend class MCAsmLayout
friend

Definition at line 26 of file MCFragment.h.

Member Data Documentation

bool llvm::MCFragment::HasInstructions
protected

Definition at line 53 of file MCFragment.h.

Referenced by hasInstructions(), and llvm::MCDataFragment::setHasInstructions().


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