Re: [Xen-devel] incompatible prototypes

[Jeremy Fitzhardinge <jeremy@xxxxxxxx>]

Keir Fraser wrote:
>> We don't use regparm(3) inside Xen?  Works nicely for the kernel.
>>     
>
> What's the speedup?
>   

Mumble mumble.  Don't know.  It's been that way for quite a long time now.

But it makes the generated code moderately smaller.  -freg-struct-return
helps too (about 2k of text saved on the kernel, which is fairly piddling).

    J

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