Date: Sat, 11 Apr 2015 18:43:09 +0300 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: [GSoC] John the Ripper support for PHC finalists On Sat, Apr 11, 2015 at 05:35:53PM +0200, Agnieszka Bielec wrote: > again in well when I type configure I get: > a@...l:~/sse/src$ ./configure | grep -i avx > checking for AVX... yes > checking for AVX2... no Oh, I'm sorry I forgot to mention where to find the AVX2-enabled newer version of gcc on that machine. You need to do: export PATH=~gcc/gcc-4.9.2/bin:$PATH LD_LIBRARY_PATH=~gcc/gcc-4.9.2/lib64:$LD_LIBRARY_PATH > I wanted to test my sse2 implementation but on well when I want to > compile johntheripper I have > > /tmp/ccsm0C9J.s: Assembler messages: > /tmp/ccsm0C9J.s:434: Error: no such instruction: `vfmadd312sd > .LC5(%rip),%xmm0,%xmm2' > make: *** [formats.o] Error 1 > make: Leaving directory `/space/home/a/sse/src' > make: *** [default] Error 2 The version of binutils on well might not support all of the instructions that recent gcc may generate for that platform, but in practice it's been sufficient for us so far. Why would the vfmadd312sd instruction appear in code generated for POMELO? This is a floating-point instruction. Do you possibly inadvertently use floating-point math somewhere in your code? Alexander
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