Re: [PATCH RFC 0/7] x86: convert ticketlocks to C and remove duplicatecode

[H. Peter Anvin]

On 07/15/2011 10:24 AM, Jeremy Fitzhardinge wrote:
> 
> I posted a bug about gcc not generating cmp %ah, %al in this case, but the general consensus was that
> it's not a good choice on current Intel chips, because it causes a partial word stall, and that the
> current generated code is better.  (And gcc can generate "cmp %Xh, %Xl" if it wants to - see below.)
> 

Which version of gcc is this, and also, do you have the gcc bug report
number?  I was talking to H.J. and he said he thought it sounded strange.

	-hpa
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