Re: [PATCH] 1-2-3 GB

From: Hugh Dickins (hugh@veritas.com)
Date: Fri Jan 18 2002 - 19:24:43 EST


On Fri, 18 Jan 2002, Pavel Machek wrote:
>
> > The patch below seems to be enough to convince egcs-2.91.66 and
> > gcc-2.95.3 to use a "jb" comparison there. I'm working on PIII,
> > prefetchw() just a stub, if that makes any difference.
>
> If this is really gcc bug, would simply making j volatile fix it?

You rogue! The panacea, eh? Well, yes, it does look like that's
enough with egcs-2.91.66 (I don't have 2.95 here to try at the moment,
expect it would behave the same) - the comparison uses "jle" as before,
but now it's correctly on free_one_pmd's index j instead of an address.
Neat - but an even bigger fatter comment needed?

Hugh

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