Date: Tue, 26 Jun 2012 06:14:52 +0200 From: Frank Dittrich <frank_dittrich@...mail.com> To: john-dev@...ts.openwall.com Subject: Re: precompiled sse-intrinsics vs. -march=native On 06/26/2012 03:41 AM, Solar Designer wrote: > The attached patch removes the use of precompiled sse-intrinsics from > GPU targets. The alternative would have been to remove -march=native > from them. I don't know which is the better choice; neither is perfect. > Since modern systems tend to have at least AVX (and maybe also XOP), > -march=native may be preferable over the precompiled SSE2 code. Yet > another alternative would be to have more GPU targets for the different > combinations, but that would be confusing. I noticed that on my 64bit system some formats were slower with -native than they were with -avx, so you might use relbench -v to decide... (BTW: on my 32bit system I noticed that clang produced faster code than gcc (4.6.3) for several formats.) Frank
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