[Webkit-unassigned] [Bug 19457] Create fused opcodes for tests and conditional jumps

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Jun 10 17:28:23 PDT 2008


cwzwarich at uwaterloo.ca changed:

           What    |Removed                     |Added
  Attachment #21598|0                           |1
        is obsolete|                            |
  Attachment #21613|                            |review?
               Flag|                            |

------- Comment #2 from cwzwarich at uwaterloo.ca  2008-06-10 17:28 PDT -------
Created an attachment (id=21613)
 --> (http://bugs.webkit.org/attachment.cgi?id=21613&action=view)
Revised proposed patch

Maciej says that this method of doing peephole optimizations won't conflict
with his plans for fusing loads into other operations, so here's a cleaned up
version of the patch for review. I initialize m_lastOpcodeID to op_end, since
no optimization will ever optimize a sequence starting with op_end.

We still might want to consider a different method of code generation that
incorporates all of these optimizations, but we might as well test them out
incrementally before we go rewriting everything.

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