Messages in this thread | | | Date | Wed, 11 May 2016 14:47:56 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH -v2] x86/hweight: Get rid of the special calling convention |
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On Wed, May 11, 2016 at 01:24:09PM +0200, Peter Zijlstra wrote: > Yeah, it might save a few cycles on the call, but given that most > machines should have popcnt these days is it worth the hassle/cost of > duplicating the lib/hweight.c magic in asm (and remember, twice, once > for 32bit and once for 64bit) ?
Makes sense to me - we can do the funky cool stuff but considering the fact that we have all the required bits already, I think we should do the thunking game and be done with it.
I guess we're older, lazy and more realists now...
-- Regards/Gruss, Boris.
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) --
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