scale.backend.trips2
Class BeginMarker

java.lang.Object
  scale.backend.Instruction
      scale.backend.Marker
          scale.backend.trips2.BeginMarker

All Implemented Interfaces:

java.lang.Cloneable

public class BeginMarker
extends Marker

This class marks the first position in a routine.

$Id: BeginMarker.java,v 1.12 2007-08-27 18:30:13 burrill Exp $

Copyright 2007 by the Scale Compiler Group,
Department of Computer Science
University of Massachusetts,
Amherst MA. 01003, USA
All Rights Reserved.

An instance of this class is used to generate the assembly directives for the entry point to a routine.

Constructor Summary

BeginMarker(Scribble scribble)

Method Summary

void	assembler(Assembler asm, Emit emit) Insert the assembler representation of the instruction into the output stream.
protected int	getLowTmpReg() Return the lowest numbered temp register.
java.lang.String	getName() Return the name of the routine.
RoutineDecl	getRoutine()
protected void	setLowTmpReg(int lowTempReg) Specifiy the lowest numbered temp register for this routine.
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.Marker

getExecutionCycles, getOpcode, independent, instructionSize, isMarker, nullify, remapDestRegister, remapRegisters, remapSrcRegister

Methods inherited from class scale.backend.Instruction

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

Methods inherited from class java.lang.Object

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

Constructor Detail

BeginMarker

public BeginMarker(Scribble scribble)

Method Detail

setLowTmpReg

protected void setLowTmpReg(int lowTempReg)

Specifiy the lowest numbered temp register for this routine.

getLowTmpReg

protected int getLowTmpReg()

Return the lowest numbered temp register. Should be called just prior to generating code for this routine.

specifyRegisterUsage

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

Specify the registers used by this instruction.

Overrides:

specifyRegisterUsage in class Marker

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)

assembler

public void assembler(Assembler asm,
                      Emit emit)

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

Overrides:

assembler in class Marker

getName

public java.lang.String getName()

Return the name of the routine.

getRoutine

public RoutineDecl getRoutine()

toString

public java.lang.String toString()

Overrides:

toString in class Marker