[Webkit-unassigned] [Bug 84553] DFG should have control flow graph simplification

Sun Apr 22 17:58:19 PDT 2012

https://bugs.webkit.org/show_bug.cgi?id=84553

Filip Pizlo <fpizlo at apple.com> changed:

           What    |Removed                     |Added
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 Attachment #138280|0                           |1
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--- Comment #3 from Filip Pizlo <fpizlo at apple.com>  2012-04-22 17:58:19 PST ---
Created an attachment (id=138281)
 --> (https://bugs.webkit.org/attachment.cgi?id=138281&action=review)
getting close

Fixed the convergence problem, which was due to constant abstract values being deconstantified upon inter-block merging. This then revealed a bunch of bugs in constant folding of GetLocal. So I fixed them.

Right now the code is kind of performing as expected for simple code.  But I still need to test it more and do more investigation to ensure that I haven't introduced some horrible problems.

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