Date: Tue, 26 Jun 2012 06:10:24 +0400 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: precompiled sse-intrinsics vs. -march=native On Tue, Jun 26, 2012 at 03:58:19AM +0200, magnum wrote: > On 2012-06-26 03:41, Solar Designer wrote: > >It appears that we shouldn't use the precompiled sse-intrinsics > >files (icc's *.S) in -march=native builds. Specifically, when I > >tried linux-x86-64-gpu on bull where -march=native implies XOP, I > >got reporting that XOP intrinsics were being used, whereas in reality > >the build used icc-precompiled SSE2 code. > > My bad, I though I removed -DUSING_ICC_S_FILE from them. Good thing you > caught it. Ouch, I did not even consider -DUSING_ICC_S_FILE. Now I see that the -x86-64-gpu, etc. targets did not have it, but the -x86-gpu, etc. ones did. Since we're now removing the uses of precompiled sse-intrinsics from those targets, we should also remove -DUSING_ICC_S_FILE from them. This is not done in the patch that I sent - please do it manually. Thanks, Alexander
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