scale.backend.sparc
Class CallInstruction

java.lang.Object
  scale.backend.Instruction
      scale.backend.Branch
          scale.backend.sparc.SparcBranch
              scale.backend.sparc.CallInstruction

All Implemented Interfaces:

java.lang.Cloneable

public class CallInstruction
extends SparcBranch

This class represents Sparc call instruction.

$Id: CallInstruction.java,v 1.19 2006-11-16 17:49:38 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

protected Displacement

displacement the displacement

Fields inherited from class scale.backend.sparc.SparcBranch

annulled, delaySlot, opcode, pt

Constructor Summary

CallInstruction(Displacement displacement, int numTargets, SparcInstruction delaySlot)

CallInstruction(int numTargets, SparcInstruction delaySlot)

Method Summary

void	assembler(Assembler asm, Emit emit) Insert the assembler representation of the instruction into the output stream.
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.
protected void	setReturnedStructSize(int size) Specifiy the size of the struct returned by the call or 0 if none.
void	specifyRegisterUsage(RegisterAllocator rs, int index, int strength) Specify the registers used by this instruction.
java.lang.String	toString()

Methods inherited from class scale.backend.sparc.SparcBranch

assembleDelay, assembleDisp, canBeAnnulled, canBeDeleted, delayToStringBuf, getAnnulled, getDelaySlot, getOpcode, getPt, instructionSize, isUnconditional, mods, remapDestRegister, remapRegisters, remapSrcRegister, setAnnulled, setDelaySlot, setOpcode, uses

Methods inherited from class scale.backend.Branch

additionalRegsKilled, additionalRegsSet, additionalRegsUsed, addTarget, copy, getBranchProbability, getExecutionCycles, getRegsKilled, getTarget, isBranch, isCall, markAsCall, nullify, numTargets, setBranchProbability, uses

Methods inherited from class scale.backend.Instruction

clone, ehash, getBBID, getCopyDest, getCopySrc, getFunctionalUnit, getLoopNumber, getNext, getPredicate, getPredicates, getTag, isCopy, isLabel, isLoad, isMandatory, isMarker, isPhi, isPredicated, isPredicatedOnTrue, isPrefetch, isSpillInstruction, isSpillLoadPoint, isSpillStorePoint, isStore, 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

Field Detail

displacement

protected Displacement displacement

the displacement

Constructor Detail

CallInstruction

public CallInstruction(int numTargets,
                       SparcInstruction delaySlot)

CallInstruction

public CallInstruction(Displacement displacement,
                       int numTargets,
                       SparcInstruction delaySlot)

Method Detail

getDestRegister

public int getDestRegister()

Return the destination register or -1 if none.

Overrides:

getDestRegister in class Instruction

getSrcRegisters

public int[] getSrcRegisters()

Return the source registers or null if none.

Overrides:

getSrcRegisters in class Instruction

defs

public boolean defs(int register,
                    RegisterSet registers)

Return true if the instruction sets the register.

Overrides:

defs in class SparcBranch

setReturnedStructSize

protected void setReturnedStructSize(int size)

Specifiy the size of the struct returned by the call or 0 if none.

Overrides:

setReturnedStructSize in class SparcBranch

specifyRegisterUsage

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

Specify the registers used by this instruction.

Overrides:

specifyRegisterUsage in class SparcBranch

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)

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 Branch

Parameters:

inst - is the specified instruction

assembler

public void assembler(Assembler asm,
                      Emit emit)

Insert the assembler representation of the instruction into the output stream.

Specified by:

assembler in class Instruction

toString

public java.lang.String toString()

Overrides:

toString in class Branch