[Bug middle-end/77568] [7 regression] CSE/PRE/Hoisting blocks common instruction contractions

pinskia at gcc dot gnu.org gcc-bugzilla@gcc.gnu.org
Mon Sep 12 18:02:00 GMT 2016


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77568

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |missed-optimization
   Target Milestone|---                         |7.0

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I think this is just a pass ordering issue.  We create fmas after PRE.  Maybe
we should do it both before and after ...
Or enhance the pass which produces FMA to walk through to another bb ...


More information about the Gcc-bugs mailing list