[Webkit-unassigned] [Bug 46095] MacroAssemblerARM generates unaligned loads

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=46095





--- Comment #5 from David Tapuska <dtapuska at rim.com>  2010-10-27 13:46:27 PST ---
(In reply to comment #4)
> (From update of attachment 68235 [details])
> Have you tested perf impact of this on non-armv5?

No I didn't measure a pref impact. 

The old code was just wrong; as the fill on the register would be wrong because it would be using data around the address instead of letting the core fill in zeros into the register in top 3 bytes. 

So one could expect an incorrect branch occasionally and possible data exposure.

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