harpoon.Analysis.PreciseGC
Class WriteBarrierTreePass

java.lang.Object
  harpoon.Analysis.Tree.Simplification
      harpoon.Analysis.PreciseGC.WriteBarrierTreePass

public abstract class WriteBarrierTreePass
extends Simplification

WriteBarrierTreePass performs some low-level transformations to the output of WriteBarrierQuadPass which cannot be done in the quad form on which WriteBarrierQuadPass operates. >WriteBarrierTreePass works on tree form.

This pass is invoked by WriteBarrierQuadPass.treeCodeFactory().

Version:

$Id: WriteBarrierTreePass.java,v 1.6 2003/03/11 19:15:42 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, Frame f, ClassHierarchy ch, Linker linker) Code factory for applying WriteBarrierTreePass to a canonical tree.

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,
                                       Frame f,
                                       ClassHierarchy ch,
                                       Linker linker)

Code factory for applying WriteBarrierTreePass to a canonical tree. Clones the tree before doing transformation in-place.