Date: Sat, 5 Sep 2015 20:48:13 +0200 From: magnum <john.magnum@...hmail.com> To: john-dev@...ts.openwall.com Subject: Large stack alignment (was: Re: MD5 on XOP, NEON, AltiVec) On 2015-09-05 04:47, Solar Designer wrote: > Guess not confirmed. We use buffers on the stack, and they are properly > aligned for 128-bit SIMD. This is unreliable for AVX2 and above, though. Are you sure it's unreliable? As far as I can google it, gcc had problems with large alignments but it was fixed long before 4.7, which is the minimum version you need to even build for AVX2. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=16660 http://stackoverflow.com/questions/841433/gcc-attribute-alignedx-explanation magnum
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