org.jikesrvm.compilers.opt.ir

Class GenericRegisterPool

java.lang.Object

org.jikesrvm.compilers.opt.ir.AbstractRegisterPool

org.jikesrvm.compilers.opt.ir.GenericRegisterPool

Direct Known Subclasses:

RegisterPool, RegisterPool

public abstract class GenericRegisterPool
extends AbstractRegisterPool

Pool of symbolic registers. Each IR contains has exactly one register pool object associated with it.

See Also:

Register

Field Summary

Fields

Modifier and Type	Field and Description
protected GenericPhysicalRegisterSet	physical

Fields inherited from class org.jikesrvm.compilers.opt.ir.AbstractRegisterPool

currentNum

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	GenericRegisterPool(RVMMethod meth) Initializes a new register pool for the method meth.

Method Summary

Modifier and Type	Method and Description
Register	getFP() Get the Framepointer (FP)
int	getNumberOfSymbolicRegisters() Return the number of symbolic registers (doesn't count physical ones)
GenericPhysicalRegisterSet	getPhysicalRegisterSet()
int	getTotalNumberOfRegisters()
RegisterOperand	makeFPOp() Get a temporary that represents the FP register
abstract Operand	makeJTOCOp()
abstract Operand	makeTocOp()
RegisterOperand	makeTROp() Get a temporary that represents the PR register

Methods inherited from class org.jikesrvm.compilers.opt.ir.AbstractRegisterPool

getAddress, getCondition, getDouble, getFirstSymbolicRegister, getFloat, getInteger, getLong, getReg, getReg, getReg, getSecondReg, getValidation, makeTemp, makeTemp, makeTemp, makeTempAddress, makeTempBoolean, makeTempCondition, makeTempDouble, makeTempFloat, makeTempInt, makeTempLong, makeTempOffset, makeTempValidation, release, removeRegister

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

physical

protected final GenericPhysicalRegisterSet physical

Constructor Detail

GenericRegisterPool

protected GenericRegisterPool(RVMMethod meth)

Initializes a new register pool for the method meth.

Parameters:

meth - the RVMMethod of the outermost method

Method Detail

getPhysicalRegisterSet

public GenericPhysicalRegisterSet getPhysicalRegisterSet()

getNumberOfSymbolicRegisters

public int getNumberOfSymbolicRegisters()

Return the number of symbolic registers (doesn't count physical ones)

Returns:

the number of symbolic registers allocated by the pool

getTotalNumberOfRegisters

public int getTotalNumberOfRegisters()

Returns:

the total number of register in the pool, including physical ones

getFP

public Register getFP()

Get the Framepointer (FP)

Returns:

the FP register

makeFPOp

public RegisterOperand makeFPOp()

Get a temporary that represents the FP register

Returns:

the temp

makeTROp

public RegisterOperand makeTROp()

Get a temporary that represents the PR register

Returns:

the temp

makeJTOCOp

public abstract Operand makeJTOCOp()

Returns:

a temporary that represents the JTOC register (as an Address)

makeTocOp

public abstract Operand makeTocOp()

Returns:

a temporary that represents the JTOC register (as an Object)