[Webkit-unassigned] [Bug 130576] Constants folded by DFG::ByteCodeParser should not be dead.

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Mar 21 12:08:38 PDT 2014


https://bugs.webkit.org/show_bug.cgi?id=130576





--- Comment #9 from Filip Pizlo <fpizlo at apple.com>  2014-03-21 12:08:58 PST ---
(In reply to comment #8)
> I have a local patch to remove the bytecode parser's constant folder and I'm testing it now.

Yup, as I expected, there is no perf penalty to getting rid of the bytecode parser's folder.  The real folder can do everything that the parser can do and our optimization fixpoint takes care of the rest.  The fact that the JIT is concurrent further removes any benefit from whatever small compile-time win this could have ever been.

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