Some assembly for scalar operations #161

1. 
   sipa commented at 4:04 pm on December 12, 2014: contributor

   Gives a 12% signing performance improvement.
2. sipa force-pushed on Dec 13, 2014
3. sipa force-pushed on Dec 14, 2014
4. 
   sipa commented at 1:36 am on December 14, 2014: contributor

   Updated: now includes assembly for multiply, square and reduce.
5. sipa force-pushed on Dec 16, 2014
6. sipa force-pushed on Dec 22, 2014
7. sipa force-pushed on Dec 22, 2014
8. 
   sipa commented at 6:11 pm on December 29, 2014: contributor

   @gmaxwell Care to review?
9. sipa force-pushed on Feb 3, 2015
10. 
    sipa commented at 3:48 am on February 3, 2015: contributor

    Rebased.
11. x86_64 assembly optimization for scalar_4x64 ffccfd2d00
12. sipa force-pushed on Feb 6, 2015
13. 
    sipa commented at 7:33 pm on February 6, 2015: contributor

    @gmaxwell Used symbolic constants in the assembly now.
14. 
    gmaxwell commented at 1:35 am on February 7, 2015: contributor

    ACK.
15. sipa merged this on Feb 7, 2015
16. sipa closed this on Feb 7, 2015

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17. sipa referenced this in commit 2d4cd53087 on Feb 7, 2015
18. real-or-random cross-referenced this on Feb 25, 2020 from issue Allow overriding default flags by jonasnick

Contributors
sipa gmaxwell