scale.backend.sparc
Class FmoveInstruction

java.lang.Object
  scale.backend.Instruction
      scale.backend.sparc.SparcInstruction
          scale.backend.sparc.FltOpInstruction
              scale.backend.sparc.FmoveInstruction

All Implemented Interfaces:

java.lang.Cloneable

public class FmoveInstruction
extends FltOpInstruction

This class represents Sparc floating point move instructions.

$Id: FmoveInstruction.java,v 1.19 2006-10-04 13:59:15 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.sparc.FltOpInstruction

rd, rs2

Fields inherited from class scale.backend.sparc.SparcInstruction

opcode, setCC, useCC

Constructor Summary

FmoveInstruction(int opcode, int cc, int rs2, int rd)

Method Summary

void	assembler(Assembler gen, Emit emit) Insert the assembler representation of the instruction into the output stream.
static int	created() Return the number of instances of this class created.
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.
void	specifyRegisterUsage(RegisterAllocator rs, int index, int strength) Specify the registers used by this instruction.
java.lang.String	toString()
boolean	uses(int register, RegisterSet registers) Return true if the instruction uses the register.

Methods inherited from class scale.backend.sparc.FltOpInstruction

canBeDeleted, defs, getDestRegister, remapDestRegister, remapRegisters, remapSrcRegister

Methods inherited from class scale.backend.sparc.SparcInstruction

assembleDisp, getOpcode, independentCC, instructionSize, setOpcode, setsCC, setSetCC, setsSpecialReg, setUseCC, usesCC

Methods inherited from class scale.backend.Instruction

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

Methods inherited from class java.lang.Object

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

Constructor Detail

FmoveInstruction

public FmoveInstruction(int opcode,
                        int cc,
                        int rs2,
                        int rd)

Method Detail

created

public static int created()

Return the number of instances of this class created.

getSrcRegisters

public int[] getSrcRegisters()

Return the source registers or null if none.

Overrides:

getSrcRegisters in class FltOpInstruction

specifyRegisterUsage

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

Specify the registers used by this instruction.

Overrides:

specifyRegisterUsage in class FltOpInstruction

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 FltOpInstruction

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 FltOpInstruction

Parameters:

inst - is the specified instruction

assembler

public void assembler(Assembler gen,
                      Emit emit)

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

Overrides:

assembler in class FltOpInstruction

toString

public java.lang.String toString()

Overrides:

toString in class FltOpInstruction