[Bug 180] DMD -O is faster than GDC -O3 for byte and short math

gdc-bugzilla at gdcproject.org gdc-bugzilla at gdcproject.org
Wed Nov 8 22:43:01 UTC 2017


https://bugzilla.gdcproject.org/show_bug.cgi?id=180

Iain Buclaw <ibuclaw at gdcproject.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |WONTFIX
             Status|NEW                         |RESOLVED

--- Comment #4 from Iain Buclaw <ibuclaw at gdcproject.org> ---
And on my test machine, I get faster results if I remove `-march=native` from
the commandline.

I can only conclude that this test is contrived - and certainly looking at the
generated trees, there's nothing we're really doing wrong here.  This is
testing GCC's ability to produce good code, not GDC's ability.

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