org.jikesrvm.compilers.opt.ir
Class GenericPhysicalRegisterSet

java.lang.Object
  org.jikesrvm.compilers.opt.ir.GenericPhysicalRegisterSet

All Implemented Interfaces:

BitSetMapping

Direct Known Subclasses:

PhysicalRegisterSet

public abstract class GenericPhysicalRegisterSet
extends Object
implements BitSetMapping

This class represents a set of Registers corresponding to the physical register set. This class holds the architecture-independent functionality

Implementation Note: Each register has an integer field Register.number. This class must number the physical registers so that get(n) returns an Register r with r.number = n!

GenericPhysicalRegisterSet

public GenericPhysicalRegisterSet()

getNumberOfPhysicalRegisters

public abstract int getNumberOfPhysicalRegisters()

Return the total number of physical registers.

getFP

public abstract Register getFP()

Returns:

the FP register

getTR

public abstract Register getTR()

Returns:

the thread register

getGPR

public abstract Register getGPR(int n)

Returns:

the nth physical GPR

getFirstReturnGPR

public abstract Register getFirstReturnGPR()

Returns:

the first GPR return

getFPR

public abstract Register getFPR(int n)

Returns:

the nth physical FPR

get

public abstract Register get(int n)

Returns:

the nth physical register in the pool.

enumerateAll

public abstract Enumeration<Register> enumerateAll()

Enumerate all the physical registers in this set.

enumerateGPRs

public abstract Enumeration<Register> enumerateGPRs()

Enumerate all the GPRs in this set.

enumerateVolatileGPRs

public abstract Enumeration<Register> enumerateVolatileGPRs()

Enumerate all the volatile GPRs in this set.

enumerateNonvolatileGPRs

public abstract Enumeration<Register> enumerateNonvolatileGPRs()

Enumerate all the nonvolatile GPRs in this set.

enumerateVolatileFPRs

public abstract Enumeration<Register> enumerateVolatileFPRs()

Enumerate all the volatile FPRs in this set.

enumerateNonvolatileFPRs

public abstract Enumeration<Register> enumerateNonvolatileFPRs()

Enumerate all the nonvolatile FPRs in this set.

enumerateVolatiles

public abstract Enumeration<Register> enumerateVolatiles()

Enumerate all the volatile physical registers

enumerateNonvolatileGPRsBackwards

public Enumeration<Register> enumerateNonvolatileGPRsBackwards()

Enumerate all the nonvolatile GPRs in this set, backwards

enumerateNonvolatileFPRsBackwards

public Enumeration<Register> enumerateNonvolatileFPRsBackwards()

Enumerate all the nonvolatile FPRs in this set, backwards.

getMappedObject

public final Object getMappedObject(int n)

Implementation of the BitSetMapping interface.

Specified by:

getMappedObject in interface BitSetMapping

getMappedIndex

public final int getMappedIndex(Object o)

Implementation of the BitSetMapping interface.

Specified by:

getMappedIndex in interface BitSetMapping

getMappingSize

public final int getMappingSize()

Implementation of the BitSetMapping interface.

Specified by:

getMappingSize in interface BitSetMapping