[Webkit-unassigned] [Bug 26382] [ES5] Implement Function.prototype.bind

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=26382


Caio Marcelo de Oliveira Filho <caio.oliveira at openbossa.org> changed:

           What    |Removed                     |Added
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  Attachment #54897|0                           |1
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--- Comment #16 from Caio Marcelo de Oliveira Filho <caio.oliveira at openbossa.org>  2010-05-02 19:24:38 PST ---
Created an attachment (id=54900)
 --> (https://bugs.webkit.org/attachment.cgi?id=54900)
Optimization for bind() used just for binding 'this' (non JIT case)

After some discussion with Oliver and testing, it isn't always safe to rewrite
the 'callee' register, since it might be reused by the bytecode. For the
non-JIT case the fix is simple, just change the local variable used instead of
the call frame.

The JIT version is already correct in this case, but suffer other problem: that
slow cases can look at the callee register again (ex.: compileOpCallSlowCase()
when OPTIMIZED_CALL is disabled).

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