Re: CURLWP global register in NetBSD/mips

[Simon Burge <simonb%NetBSD.org@localhost>]

Matt Thomas wrote:

> On Dec 21, 2010, at 1:56 AM, Toru Nishimura wrote:
> 
> > Guys,
> > 
> > NetBSD/mips kernel uses a dedicated register to hold curlwp
> > global variable.  Register S7 is used in -current whileT8 in
> > matt-nb5-mips64 branch (why differ?)
> 
> Better code.  T8 is rarely used but S7 is one of the saved
> registers and used much more often.

I'm curious - was the change to put curlwp ever actually benchmarked?  I
couldn't find anything.  I can find a reference to a kernel being 2487
bytes smaller in April 2007 but no benchmarks.

Cheers,
Simon.