[Issue 21560] md5 poor performance out of the box

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21560

--- Comment #7 from Witold Baryluk <witold.baryluk+d at gmail.com> ---
(In reply to Basile-z from comment #5)
> using ldc2 too ? there are option to enable best vectorization and bit op

Quite a bit better with ldc2 (1.24.0 with LLVM 11.0.0, -release -mcpu=native
-O3):

009f07e9b8fb09a820dd180441502d46 
/usr/lib/live/mount/overlay/rw/var/lib/docker/devicemapper/devicemapper/data
real    2m47.200s


But, that is with precompiled ldc's phobos from Debian testing (-O -inline
-release, aka -O2), so a bit limited vectorization and const propagation.

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