[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Simple contribution please?
From: |
Samuel Thibault |
Subject: |
Re: Simple contribution please? |
Date: |
Wed, 17 Aug 2016 08:46:34 +0200 |
User-agent: |
Mutt/1.5.21+34 (58baf7c9f32f) (2010-12-30) |
Richard Braun, on Fri 12 Aug 2016 21:29:09 +0200, wrote:
> I can take care of this when I have time.
Thanks!
- Are we sure that the direction flag is cleared on entry of the assembly
snippets?
- I don't think the memcmp, strlen and strcmp snippets need a memory clobber?
- the ecx trick in strlen is nice :)
- should we really use assembly snippets for strcpy and strcmp? In my
non-virtualized tests, a simple C loop such as
do { test = *dest++ = *src++; } while(test);
actually goes quite faster thanks to the gcc optimizer, and the
non-rep snippet won't buy virtualized time (and I guess we don't run
str functions on memory-mapped devices anyway...)
Samuel
- Simple contribution please?, Samuel Thibault, 2016/08/12
- Re: Simple contribution please?, Richard Braun, 2016/08/12
- Re: Simple contribution please?, Richard Braun, 2016/08/17
- Re: Simple contribution please?, Samuel Thibault, 2016/08/17
- Re: Simple contribution please?, Richard Braun, 2016/08/17
- Re: Simple contribution please?, Samuel Thibault, 2016/08/17