[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 ...
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