[Webkit-unassigned] [Bug 84004] DFG should have constant propagation

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=84004


Filip Pizlo <fpizlo at apple.com> changed:

           What    |Removed                     |Added
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 Attachment #137652|0                           |1
        is obsolete|                            |
 Attachment #137652|review?                     |
               Flag|                            |
 Attachment #137658|                            |review?
               Flag|                            |




--- Comment #8 from Filip Pizlo <fpizlo at apple.com>  2012-04-18 00:18:14 PST ---
Created an attachment (id=137658)
 --> (https://bugs.webkit.org/attachment.cgi?id=137658&action=review)
the patch

Fixed two hilarious bugs that this patch introduced:

- LogicalNot(foo) is not an integer.  Really, it isn't.  In fact, it's a boolean.  Imagine that.

- Don't replace JSConstant or WeakJSConstant with JSConstant, because at best that's a waste of CPU cycles and at worst, it's just plain wrong (WeakJSConstant should not be coerced into a JSConstant).

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