[Webkit-unassigned] [Bug 20356] Dynamic function/type specialisation

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Aug 11 21:56:16 PDT 2008


------- Comment #1 from oliver at apple.com  2008-08-11 21:56 PDT -------
Created an attachment (id=22741)
 --> (https://bugs.webkit.org/attachment.cgi?id=22741&action=view)
initial specialisation patch

Here's an initial version of this patch.  Current problems:
 * I'm fairly sure it's not gc-safe (it stores the JSFunction* for functions it
specialises in the opcode stream, which could be gc'd, then that address could
be reallocated with a different object which could in certain circumstances
result in badness)
 * It's not 64bit safe -- it stores the JSFunction* in a single operand in te
intstruction stream.
 * Some of the code is heonously ugly, especially the bits where functions
specialise themselves.

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