scale.backend.ppc
Class StoreInstruction

java.lang.Object
  scale.backend.Instruction
      scale.backend.ppc.PPCInstruction
          scale.backend.ppc.FrInstruction
              scale.backend.ppc.MemoryInstruction
                  scale.backend.ppc.StoreInstruction

All Implemented Interfaces:

java.lang.Cloneable

Direct Known Subclasses:

StorexInstruction

public class StoreInstruction
extends MemoryInstruction

This is the base class for all PPC Store instructions.

$Id: StoreInstruction.java,v 1.4 2006-10-04 13:59:23 burrill Exp $

Copyright 2005 by the Scale Compiler Group,
Department of Computer Science
University of Massachusetts,
Amherst MA. 01003, USA
All Rights Reserved.

Field Summary

Fields inherited from class scale.backend.ppc.MemoryInstruction

dftn, displacement, macosx, rd

Fields inherited from class scale.backend.ppc.FrInstruction

ra

Fields inherited from class scale.backend.ppc.PPCInstruction

opcode

Constructor Summary

StoreInstruction(int opcode, int rd, int ra)

StoreInstruction(int opcode, int rd, int ra, Displacement disp)

StoreInstruction(int opcode, int rd, int ra, Displacement disp, int dftn, boolean macosx)

Method Summary

boolean	defs(int register, RegisterSet registers) Return true if the instruction sets the register.
int	getDestRegister() Return the destination register or -1 if none.
int[]	getSrcRegisters() Return the source registers or null if none.
boolean	independent(Instruction inst, RegisterSet registers) Return true if this instruction is independent of the specified instruction.
boolean	mods(int register, RegisterSet registers) Return true if the instruction sets the register.
void	nullify(RegisterSet rs) Mark the instruction as no longer needed.
void	remapSrcRegister(int oldReg, int newReg) Map the registers used in the instruction as sources to the specified register.
void	specifyRegisterUsage(RegisterAllocator rs, int index, int strength) Specify the registers used by this instruction.
boolean	uses(int register, RegisterSet registers) Return true if the instruction uses the register.

Methods inherited from class scale.backend.ppc.MemoryInstruction

assembler, remapRegisters, toString

Methods inherited from class scale.backend.ppc.PPCInstruction

assembleDisp, canBeDeleted, getOpcode, instructionSize, isLoad, isStore, remapDestRegister, setOpcode

Methods inherited from class scale.backend.Instruction

clone, copy, ehash, getBBID, getCopyDest, getCopySrc, getExecutionCycles, getFunctionalUnit, getLoopNumber, getNext, getPredicate, getPredicates, getTag, isBranch, isCopy, isLabel, isMandatory, isMarker, isPhi, isPredicated, isPredicatedOnTrue, isPrefetch, isSpillInstruction, isSpillLoadPoint, isSpillStorePoint, markSpillInstruction, nullified, numPredicates, removePredicates, setBBID, setLoopNumber, setMandatory, setNext, setPredicate, setPredicate, setPredicatedOnTrue, setPredicates, setsSpecialReg, setTag, specifyNotSpillLoadPoint, specifySpillStorePoint

Methods inherited from class java.lang.Object

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

Constructor Detail

StoreInstruction

public StoreInstruction(int opcode,
                        int rd,
                        int ra)

Parameters:

opcode - is the instruction's opcode

rd - is the destination register

ra - is the source register

StoreInstruction

public StoreInstruction(int opcode,
                        int rd,
                        int ra,
                        Displacement disp)

Parameters:

opcode - is the instruction's opcode

rd - is the destination register

ra - is the source register

disp - is the displacement

StoreInstruction

public StoreInstruction(int opcode,
                        int rd,
                        int ra,
                        Displacement disp,
                        int dftn,
                        boolean macosx)

Parameters:

opcode - is the instruction's opcode

rd - is the destination register

ra - is the source register

disp - is the displacement

Method Detail

getDestRegister

public int getDestRegister()

Return the destination register or -1 if none.

Overrides:

getDestRegister in class FrInstruction

getSrcRegisters

public int[] getSrcRegisters()

Return the source registers or null if none.

Overrides:

getSrcRegisters in class FrInstruction

specifyRegisterUsage

public void specifyRegisterUsage(RegisterAllocator rs,
                                 int index,
                                 int strength)

Specify the registers used by this instruction.

Overrides:

specifyRegisterUsage in class FrInstruction

Parameters:

rs - is the register set in use

index - is an index associated with the instruction

strength - is the importance of the instruction

See Also:

RegisterAllocator.useRegister(int,int,int), RegisterAllocator.defRegister(int,int)

uses

public boolean uses(int register,
                    RegisterSet registers)

Return true if the instruction uses the register.

Overrides:

uses in class FrInstruction

mods

public boolean mods(int register,
                    RegisterSet registers)

Return true if the instruction sets the register.

Overrides:

mods in class Instruction

independent

public boolean independent(Instruction inst,
                           RegisterSet registers)

Return true if this instruction is independent of the specified instruction. If instructions are independent, than one instruction can be moved before or after the other instruction without changing the semantics of the program.

Overrides:

independent in class MemoryInstruction

Parameters:

inst - is the specified instruction

defs

public boolean defs(int register,
                    RegisterSet registers)

Return true if the instruction sets the register.

Overrides:

defs in class PPCInstruction

nullify

public void nullify(RegisterSet rs)

Mark the instruction as no longer needed.

Overrides:

nullify in class Instruction

remapSrcRegister

public void remapSrcRegister(int oldReg,
                             int newReg)

Map the registers used in the instruction as sources to the specified register. If the register is not used as a source register, no change is made.

Overrides:

remapSrcRegister in class FrInstruction

Parameters:

oldReg - is the previous source register

newReg - is the new source register