harpoon.Backend.Analysis
Class InsertWriteBarrier

java.lang.Object
  harpoon.Analysis.Tree.Simplification
      harpoon.Backend.Analysis.InsertWriteBarrier

public abstract class InsertWriteBarrier
extends Simplification

InsertWriteBarrier instruments any writes to pointer locations with a store check. This pass is used for generational garbage collection, to keep track of pointers from older to younger generations.

Version:

$Id: InsertWriteBarrier.java,v 1.5 2003/03/11 18:46:55 cananian Exp $

Author:

Karen Zee <kkz@tmi.lcs.mit.edu>

Nested Class Summary

Nested classes/interfaces inherited from class harpoon.Analysis.Tree.Simplification

Simplification.Rule

Field Summary

Fields inherited from class harpoon.Analysis.Tree.Simplification

_ADD, _ALIGN, _AND, _BINOP, _CALL, _CJUMP, _CMPEQ, _CMPGE, _CMPGT, _CMPLE, _CMPLT, _CMPNE, _CONST, _CONST0, _CONST1, _CONSTm1, _CONSTNULL, _DATUM, _DIV, _ESEQ, _EXPR, _JUMP, _LABEL, _MEM, _METHOD, _MOVE, _MUL, _NAME, _NATIVECALL, _OR, _REM, _RETURN, _SEGMENT, _SEQ, _SHL, _SHR, _TEMP, _THROW, _UNOP, _USHR, _XOR

Method Summary

static HCodeFactory	codeFactory(HCodeFactory parent) Code factory for inserting write barriers to a tree.
static List<Simplification.Rule>	HCE_RULES(DerivationGenerator _dg)

Methods inherited from class harpoon.Analysis.Tree.Simplification

_KIND, _OP, codeFactory, contains, simplify

Methods inherited from class java.lang.Object

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

Method Detail

codeFactory

public static HCodeFactory codeFactory(HCodeFactory parent)

Code factory for inserting write barriers to a tree. Clones the tree before doing transformation in-place.

HCE_RULES

public static List<Simplification.Rule> HCE_RULES(DerivationGenerator _dg)