llvm::MCTargetExpr Class Reference

Extension point for target-specific MCExpr subclasses to implement. More...

#include "llvm/MC/MCExpr.h"

Inheritance diagram for llvm::MCTargetExpr:

Public Member Functions
virtual void	printImpl (raw_ostream &OS, const MCAsmInfo *MAI) const =0
virtual bool	evaluateAsRelocatableImpl (MCValue &Res, const MCAssembler *Asm) const =0
virtual bool	isEqualTo (const MCExpr *x) const
virtual bool	inlineAssignedExpr () const
virtual void	visitUsedExpr (MCStreamer &Streamer) const =0
virtual MCFragment *	findAssociatedFragment () const =0
Public Member Functions inherited from llvm::MCExpr
	MCExpr (const MCExpr &)=delete
MCExpr &	operator= (const MCExpr &)=delete
ExprKind	getKind () const
SMLoc	getLoc () const
LLVM_ABI void	dump () const
LLVM_ABI bool	evaluateAsAbsolute (int64_t &Res) const
	Try to evaluate the expression to an absolute value.
LLVM_ABI bool	evaluateAsAbsolute (int64_t &Res, const MCAssembler &Asm) const
LLVM_ABI bool	evaluateAsAbsolute (int64_t &Res, const MCAssembler *Asm) const
LLVM_ABI bool	evaluateKnownAbsolute (int64_t &Res, const MCAssembler &Asm) const
	Aggressive variant of evaluateAsRelocatable when relocations are unavailable (e.g.
LLVM_ABI bool	evaluateAsRelocatable (MCValue &Res, const MCAssembler *Asm) const
	Try to evaluate the expression to a relocatable value, i.e.
LLVM_ABI bool	evaluateAsValue (MCValue &Res, const MCAssembler &Asm) const
	Try to evaluate the expression to the form (a - b + constant) where neither a nor b are variables.
LLVM_ABI MCFragment *	findAssociatedFragment () const
	Find the "associated section" for this expression, which is currently defined as the absolute section for constants, or otherwise the section associated with the first defined symbol in the expression.

Static Public Member Functions
static bool	classof (const MCExpr *E)
Static Public Member Functions inherited from llvm::MCExpr
static LLVM_ABI bool	evaluateSymbolicAdd (const MCAssembler *, bool, const MCValue &, const MCValue &, MCValue &)

Protected Member Functions
	MCTargetExpr ()
virtual	~MCTargetExpr ()=default
Protected Member Functions inherited from llvm::MCExpr
	MCExpr (ExprKind Kind, SMLoc Loc, unsigned SubclassData=0)
LLVM_ABI bool	evaluateAsRelocatableImpl (MCValue &Res, const MCAssembler *Asm, bool InSet) const
unsigned	getSubclassData () const

Additional Inherited Members
Public Types inherited from llvm::MCExpr
enum	ExprKind : uint8_t {   Binary , Constant , SymbolRef , Unary ,   Specifier , Target }
Protected Types inherited from llvm::MCExpr
using	Spec = uint16_t

Detailed Description

Extension point for target-specific MCExpr subclasses to implement.

This can encode a relocation operator, serving as a replacement for MCSymbolRefExpr::VariantKind. Ideally, limit this to top-level use, avoiding its inclusion as a subexpression.

NOTE: All subclasses are required to have trivial destructors because MCExprs are bump pointer allocated and not destructed.

Definition at line 465 of file MCExpr.h.

Constructor & Destructor Documentation

MCTargetExpr()

llvm::MCTargetExpr::MCTargetExpr ( )

inlineprotected

Definition at line 469 of file MCExpr.h.

References llvm::MCExpr::MCExpr(), and llvm::MCExpr::Target.

~MCTargetExpr()

virtual llvm::MCTargetExpr::~MCTargetExpr ( )

protectedvirtualdefault

Member Function Documentation

classof()

bool llvm::MCTargetExpr::classof ( const MCExpr * E )

inlinestatic

Definition at line 484 of file MCExpr.h.

References E(), llvm::MCExpr::MCExpr(), and llvm::MCExpr::Target.

evaluateAsRelocatableImpl()

virtual bool llvm::MCTargetExpr::evaluateAsRelocatableImpl ( MCValue & Res, const MCAssembler * Asm ) const

pure virtual

Implemented in llvm::AMDGPUMCExpr, llvm::HexagonMCExpr, llvm::MCUnwindV2EpilogTargetExpr, llvm::NVPTXFloatMCExpr, llvm::NVPTXGenericMCSymbolRefExpr, llvm::X86MCExpr, MCCOFFSectionNumberTargetExpr, and MCCOFFSectionOffsetTargetExpr.

findAssociatedFragment()

virtual MCFragment * llvm::MCTargetExpr::findAssociatedFragment ( ) const

pure virtual

Implemented in llvm::AMDGPUMCExpr, llvm::HexagonMCExpr, llvm::MCUnwindV2EpilogTargetExpr, llvm::NVPTXFloatMCExpr, llvm::NVPTXGenericMCSymbolRefExpr, llvm::X86MCExpr, MCCOFFSectionNumberTargetExpr, and MCCOFFSectionOffsetTargetExpr.

References llvm::MCExpr::MCFragment.

inlineAssignedExpr()

virtual bool llvm::MCTargetExpr::inlineAssignedExpr ( ) const

inlinevirtual

Reimplemented in llvm::X86MCExpr.

Definition at line 480 of file MCExpr.h.

isEqualTo()

virtual bool llvm::MCTargetExpr::isEqualTo ( const MCExpr * x ) const

inlinevirtual

Reimplemented in llvm::X86MCExpr.

Definition at line 477 of file MCExpr.h.

References llvm::MCExpr::MCExpr().

printImpl()

virtual void llvm::MCTargetExpr::printImpl ( raw_ostream & OS, const MCAsmInfo * MAI ) const

pure virtual

Implemented in llvm::AMDGPUMCExpr, llvm::HexagonMCExpr, llvm::MCUnwindV2EpilogTargetExpr, llvm::NVPTXFloatMCExpr, llvm::NVPTXGenericMCSymbolRefExpr, llvm::X86MCExpr, MCCOFFSectionNumberTargetExpr, and MCCOFFSectionOffsetTargetExpr.

References llvm::MCExpr::MCAsmInfo.

visitUsedExpr()

virtual void llvm::MCTargetExpr::visitUsedExpr ( MCStreamer & Streamer ) const

pure virtual

Implemented in llvm::AMDGPUMCExpr, llvm::HexagonMCExpr, llvm::MCUnwindV2EpilogTargetExpr, llvm::NVPTXFloatMCExpr, llvm::NVPTXGenericMCSymbolRefExpr, llvm::X86MCExpr, MCCOFFSectionNumberTargetExpr, and MCCOFFSectionOffsetTargetExpr.

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

• include/llvm/MC/MCExpr.h
• lib/MC/MCExpr.cpp