AMDGPU target specific MCExpr operations. More...

#include "Target/AMDGPU/MCTargetDesc/AMDGPUMCExpr.h"

Inheritance diagram for llvm::AMDGPUMCExpr:

Public Types
enum	VariantKind { AGVK_None , AGVK_Or , AGVK_Max , AGVK_ExtraSGPRs , AGVK_TotalNumVGPRs , AGVK_AlignTo , AGVK_Occupancy }

Public Types inherited from llvm::MCExpr
enum	ExprKind : uint8_t { Binary , Constant , SymbolRef , Unary , Target }

Public Member Functions
ArrayRef< const MCExpr * >	getArgs () const

VariantKind	getKind () const

const MCExpr *	getSubExpr (size_t Index) const

void	printImpl (raw_ostream &OS, const MCAsmInfo *MAI) const override

bool	evaluateAsRelocatableImpl (MCValue &Res, const MCAssembler Asm, const MCFixup Fixup) const override

bool	isSymbolUsedInExpression (const MCSymbol *Sym) const override

void	visitUsedExpr (MCStreamer &Streamer) const override

MCFragment *	findAssociatedFragment () const override

void	fixELFSymbolsInTLSFixups (MCAssembler &) const override

Public Member Functions inherited from llvm::MCTargetExpr
virtual void	printImpl (raw_ostream &OS, const MCAsmInfo *MAI) const =0

virtual bool	evaluateAsRelocatableImpl (MCValue &Res, const MCAssembler Asm, const MCFixup Fixup) const =0

virtual bool	isEqualTo (const MCExpr *x) const

virtual bool	isSymbolUsedInExpression (const MCSymbol *Sym) const

virtual bool	inlineAssignedExpr () const

virtual void	visitUsedExpr (MCStreamer &Streamer) const =0

virtual MCFragment *	findAssociatedFragment () const =0

virtual void	fixELFSymbolsInTLSFixups (MCAssembler &) const =0

Public Member Functions inherited from llvm::MCExpr
	MCExpr (const MCExpr &)=delete

MCExpr &	operator= (const MCExpr &)=delete

ExprKind	getKind () const

SMLoc	getLoc () const

void	print (raw_ostream &OS, const MCAsmInfo *MAI, bool InParens=false) const

void	dump () const

bool	isSymbolUsedInExpression (const MCSymbol *Sym) const
	Returns whether the given symbol is used anywhere in the expression or subexpressions.

bool	evaluateAsAbsolute (int64_t &Res, const MCAssembler &Asm, const SectionAddrMap &Addrs) const
	Try to evaluate the expression to an absolute value.

bool	evaluateAsAbsolute (int64_t &Res) const

bool	evaluateAsAbsolute (int64_t &Res, const MCAssembler &Asm) const

bool	evaluateAsAbsolute (int64_t &Res, const MCAssembler *Asm) const

bool	evaluateKnownAbsolute (int64_t &Res, const MCAssembler &Asm) const
	Aggressive variant of evaluateAsRelocatable when relocations are unavailable (e.g.

bool	evaluateAsRelocatable (MCValue &Res, const MCAssembler Asm, const MCFixup Fixup) const
	Try to evaluate the expression to a relocatable value, i.e.

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.

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 const AMDGPUMCExpr *	create (VariantKind Kind, ArrayRef< const MCExpr * > Args, MCContext &Ctx)

static const AMDGPUMCExpr *	createOr (ArrayRef< const MCExpr * > Args, MCContext &Ctx)

static const AMDGPUMCExpr *	createMax (ArrayRef< const MCExpr * > Args, MCContext &Ctx)

static const AMDGPUMCExpr *	createExtraSGPRs (const MCExpr VCCUsed, const MCExpr FlatScrUsed, bool XNACKUsed, MCContext &Ctx)
	Allow delayed MCExpr resolve of ExtraSGPRs (in case VCCUsed or FlatScrUsed are unresolvable but needed for further MCExprs).

static const AMDGPUMCExpr *	createTotalNumVGPR (const MCExpr NumAGPR, const MCExpr NumVGPR, MCContext &Ctx)

static const AMDGPUMCExpr *	createAlignTo (const MCExpr Value, const MCExpr Align, MCContext &Ctx)

static const AMDGPUMCExpr *	createOccupancy (unsigned InitOcc, const MCExpr NumSGPRs, const MCExpr NumVGPRs, const GCNSubtarget &STM, MCContext &Ctx)
	Mimics GCNSubtarget::computeOccupancy for MCExpr.

static bool	classof (const MCExpr *E)

Static Public Member Functions inherited from llvm::MCTargetExpr
static bool	classof (const MCExpr *E)

Additional Inherited Members
Protected Member Functions inherited from llvm::MCTargetExpr
	MCTargetExpr ()

virtual	~MCTargetExpr ()=default

Protected Member Functions inherited from llvm::MCExpr
	MCExpr (ExprKind Kind, SMLoc Loc, unsigned SubclassData=0)

bool	evaluateAsRelocatableImpl (MCValue &Res, const MCAssembler Asm, const MCFixup Fixup, const SectionAddrMap *Addrs, bool InSet) const

unsigned	getSubclassData () const

Detailed Description

AMDGPU target specific MCExpr operations.

Takes in a minimum of 1 argument to be used with an operation. The supported operations are:

(bitwise) or
max

Note: If the 'or'/'max' operations are provided only a single argument, the operation will act as a no-op and simply resolve as the provided argument.

Definition at line 30 of file AMDGPUMCExpr.h.

Member Enumeration Documentation

◆ VariantKind

enum llvm::AMDGPUMCExpr::VariantKind

Enumerator
AGVK_None
AGVK_Or
AGVK_Max
AGVK_ExtraSGPRs
AGVK_TotalNumVGPRs
AGVK_AlignTo
AGVK_Occupancy

Definition at line 32 of file AMDGPUMCExpr.h.

Member Function Documentation

◆ classof()

static bool llvm::AMDGPUMCExpr::classof ( const MCExpr * E )

inlinestatic

Definition at line 105 of file AMDGPUMCExpr.h.

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

◆ create()

const AMDGPUMCExpr * AMDGPUMCExpr::create	(	VariantKind	Kind,
		ArrayRef< const MCExpr * >	Args,
		MCContext &	Ctx
	)

static

Definition at line 45 of file AMDGPUMCExpr.cpp.

Referenced by createAlignTo(), createExtraSGPRs(), createMax(), createOccupancy(), createOr(), createTotalNumVGPR(), and tryFoldHelper().

◆ createAlignTo()

static const AMDGPUMCExpr * llvm::AMDGPUMCExpr::createAlignTo	(	const MCExpr *	Value,
		const MCExpr *	Align,
		MCContext &	Ctx
	)

inlinestatic

Definition at line 83 of file AMDGPUMCExpr.h.

References AGVK_AlignTo, and create().

Referenced by computeAccumOffset().

◆ createExtraSGPRs()

const AMDGPUMCExpr * AMDGPUMCExpr::createExtraSGPRs	(	const MCExpr *	VCCUsed,
		const MCExpr *	FlatScrUsed,
		bool	XNACKUsed,
		MCContext &	Ctx
	)

static

Allow delayed MCExpr resolve of ExtraSGPRs (in case VCCUsed or FlatScrUsed are unresolvable but needed for further MCExprs).

Derived from implementation of IsaInfo::getNumExtraSGPRs in AMDGPUBaseInfo.cpp.

Definition at line 266 of file AMDGPUMCExpr.cpp.

References AGVK_ExtraSGPRs, llvm::MCConstantExpr::create(), and create().

Referenced by llvm::MCResourceInfo::createTotalNumSGPRs(), and llvm::AMDGPUAsmPrinter::emitFunctionBodyEnd().

◆ createMax()

static const AMDGPUMCExpr * llvm::AMDGPUMCExpr::createMax	(	ArrayRef< const MCExpr * >	Args,
		MCContext &	Ctx
	)

inlinestatic

Definition at line 69 of file AMDGPUMCExpr.h.

References AGVK_Max, and create().

Referenced by computeAccumOffset(), and llvm::MCResourceInfo::gatherResourceInfo().

◆ createOccupancy()

const AMDGPUMCExpr * AMDGPUMCExpr::createOccupancy	(	unsigned	InitOcc,
		const MCExpr *	NumSGPRs,
		const MCExpr *	NumVGPRs,
		const GCNSubtarget &	STM,
		MCContext &	Ctx
	)

static

Mimics GCNSubtarget::computeOccupancy for MCExpr.

Remove dependency on GCNSubtarget and depend only only the necessary values for said occupancy computation. Should match computeOccupancy implementation without passing STM on.

Definition at line 287 of file AMDGPUMCExpr.cpp.

References AGVK_Occupancy, llvm::MCConstantExpr::create(), create(), llvm::GCNSubtarget::getGeneration(), llvm::AMDGPU::IsaInfo::getMaxWavesPerEU(), llvm::AMDGPU::IsaInfo::getTotalNumVGPRs(), and llvm::AMDGPU::IsaInfo::getVGPRAllocGranule().