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 , AGVK_InstPrefSize , AGVK_Lit , AGVK_Lit64 }
enum	Specifier { S_None , S_GOTPCREL , S_GOTPCREL32_LO , S_GOTPCREL32_HI , S_REL32_LO , S_REL32_HI , S_REL64 , S_ABS32_LO , S_ABS32_HI , S_ABS64 }
Public Types inherited from llvm::MCExpr
enum	ExprKind : uint8_t { Binary , Constant , SymbolRef , Unary , Specifier , Target }

Public Member Functions
ArrayRef< const MCExpr * >	getArgs () const
VariantKind	getKind () const
MCContext &	getCtx () 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 override
void	visitUsedExpr (MCStreamer &Streamer) const override
MCFragment *	findAssociatedFragment () const override
Public Member Functions inherited from llvm::MCTargetExpr
virtual bool	isEqualTo (const MCExpr *x) const
virtual bool	inlineAssignedExpr () const
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 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 *	createInstPrefSize (const MCExpr *CodeSizeBytes, MCContext &Ctx)
	Create an expression for instruction prefetch size computation: min(divideCeil(CodeSizeBytes, CacheLineSize), (1 << FieldWidth) - 1) FieldWidth and CacheLineSize are derived from the subtarget.
static const AMDGPUMCExpr *	createLit (LitModifier Lit, int64_t Value, MCContext &Ctx)
static bool	classof (const MCExpr *E)
static bool	isSymbolUsedInExpression (const MCSymbol Sym, const MCExpr E)
Static Public Member Functions inherited from llvm::MCTargetExpr
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 &)

Additional Inherited Members
Protected Types inherited from llvm::MCExpr
using	Spec = uint16_t
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)
LLVM_ABI bool	evaluateAsRelocatableImpl (MCValue &Res, const MCAssembler *Asm, 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 31 of file AMDGPUMCExpr.h.

Member Enumeration Documentation

◆ Specifier

enum llvm::AMDGPUMCExpr::Specifier

Enumerator
S_None
S_GOTPCREL
S_GOTPCREL32_LO
S_GOTPCREL32_HI
S_REL32_LO
S_REL32_HI
S_REL64
S_ABS32_LO
S_ABS32_HI
S_ABS64

Definition at line 47 of file AMDGPUMCExpr.h.

◆ VariantKind

enum llvm::AMDGPUMCExpr::VariantKind

Enumerator
AGVK_None
AGVK_Or
AGVK_Max
AGVK_ExtraSGPRs
AGVK_TotalNumVGPRs
AGVK_AlignTo
AGVK_Occupancy
AGVK_InstPrefSize
AGVK_Lit
AGVK_Lit64

Definition at line 33 of file AMDGPUMCExpr.h.

Member Function Documentation

◆ classof()

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

inlinestatic

Definition at line 122 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 47 of file AMDGPUMCExpr.cpp.

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

◆ createAlignTo()

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

inlinestatic

Definition at line 98 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 295 of file AMDGPUMCExpr.cpp.

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

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

◆ createInstPrefSize()

const AMDGPUMCExpr * AMDGPUMCExpr::createInstPrefSize	(	const MCExpr *	CodeSizeBytes,
		MCContext &	Ctx )

static

Create an expression for instruction prefetch size computation: min(divideCeil(CodeSizeBytes, CacheLineSize), (1 << FieldWidth) - 1) FieldWidth and CacheLineSize are derived from the subtarget.

Definition at line 312 of file AMDGPUMCExpr.cpp.

References AGVK_InstPrefSize, and create().

Referenced by llvm::AMDGPUAsmPrinter::endFunction().