harpoon.Analysis.Tree
Class DeadCodeElimination

java.lang.Object
  |
  +--harpoon.Analysis.Tree.Simplification
        |
        +--harpoon.Analysis.Tree.DeadCodeElimination

public abstract class DeadCodeElimination
extends Simplification

DeadCodeElimination removes unused MOVEs, useless EXPRs, and whatever other cruft it can detect using a liveness analysis.

Version:
$Id: DeadCodeElimination.java,v 1.3 2002/02/26 22:42:47 cananian Exp $
Author:
C. Scott Ananian <cananian@alumni.princeton.edu>

Nested Class Summary
 
Nested classes 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 applying DeadCodeElimination to a canonical tree.
static List HCE_RULES(Code code)
           
 
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 applying DeadCodeElimination to a canonical tree. Clones the tree before doing DCE in-place.


HCE_RULES

public static List HCE_RULES(Code code)