[haiku-commits] Re: haiku: hrev44282 - src/system/kernel/arch/x86
- From: Rene Gollent <anevilyak@xxxxxxxxx>
- To: haiku-commits@xxxxxxxxxxxxx
- Date: Mon, 2 Jul 2012 19:44:32 -0400
On Mon, Jul 2, 2012 at 7:22 PM, Rene Gollent <anevilyak@xxxxxxxxx> wrote:
> Fair enough on the reorder, but since the rep / mov variation is
> apparently out of the question, I'm not really sure as to a more
> compact way to write it. Thoughts?
Actually, reordering them currently isn't feasible either, since we're
relying on movsb to increment the source/destination pointers. As
such, if movsb doesn't come first, cmpb is looking at the byte that
precedes the beginning of the source string, so if that happens to be
0 we don't copy data at all.
Other suggest changes checked in though.
Regards,
Rene
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