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

Tue Apr 24 01:35:09 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 #138281|0                           |1
        is obsolete|                            |

--- Comment #6 from Filip Pizlo <fpizlo at apple.com>  2012-04-24 01:35:09 PST ---
Created an attachment (id=138517)
 --> (https://bugs.webkit.org/attachment.cgi?id=138517&action=review)
getting closer

- Implemented (hopefully) correct handling of Phantom keep-alive for children of GetLocals killed by constant folding.

- Implemented (hopefully) correct handling of Branch(constant), in that we now only merge blocks if the taken successor of the branch has only one predecessor.

- Implemented (hopefully) correct unreachable block destruction.

- Started to implement, but did not finish, the handling of jettisoned blocks with respect to Phi edges.

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