class MCEncodedFragment

Declaration

class MCEncodedFragment : public MCFragment { /* full declaration omitted */ };

Description

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

Declared at: llvm/include/llvm/MC/MCFragment.h:113

Inherits from: MCFragment

Member Variables

protected const llvm::MCSubtargetInfo* STI = nullptr

The MCSubtargetInfo in effect when the instruction was encoded. It must be non-null for instructions.

Inherited from MCFragment:

protected HasInstructions

Method Overview

• protected MCEncodedFragment(MCFragment::FragmentType FType, bool HasInstructions, llvm::MCSection * Sec)
• public bool alignToBundleEnd() const
• public static bool classof(const llvm::MCFragment * F)
• public uint8_t getBundlePadding() const
• public const llvm::MCSubtargetInfo * getSubtargetInfo() const
• public void setAlignToBundleEnd(bool V)
• public void setBundlePadding(uint8_t N)
• public void setHasInstructions(const llvm::MCSubtargetInfo & STI)

Inherited from MCFragment:

• public destroy
• public dump
• public getAtom
• public getKind
• public getLayoutOrder
• public getParent
• public hasInstructions
• public setAtom
• public setLayoutOrder
• public setParent

Methods

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

Declared at: llvm/include/llvm/MC/MCFragment.h:120

Parameters

MCFragment::FragmentType FType

bool HasInstructions

llvm::MCSection* Sec

¶bool alignToBundleEnd() const

Description

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

Declared at: llvm/include/llvm/MC/MCFragment.h:144

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

Declared at: llvm/include/llvm/MC/MCFragment.h:129

Parameters

const llvm::MCFragment* F

¶uint8_t getBundlePadding() const

Description

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.

Declared at: llvm/include/llvm/MC/MCFragment.h:152

¶const llvm::MCSubtargetInfo* getSubtargetInfo()
    const

Description

Retrieve the MCSubTargetInfo in effect when the instruction was encoded. Guaranteed to be non-null if hasInstructions() == true

Declared at: llvm/include/llvm/MC/MCFragment.h:160

¶void setAlignToBundleEnd(bool V)

Declared at: llvm/include/llvm/MC/MCFragment.h:145

Parameters

bool V

¶void setBundlePadding(uint8_t N)

Description

Set the padding size for this fragment. By default it's a no-op, and only some fragments have a meaningful implementation.

Declared at: llvm/include/llvm/MC/MCFragment.h:156

Parameters

uint8_t N

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

Description

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

Declared at: llvm/include/llvm/MC/MCFragment.h:164

Parameters

const llvm::MCSubtargetInfo& STI