https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66610
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Summary|Compound assignments |Compound assignments
|prevent value-numbering |prevent value-numbering
|optimization |optimization with unions
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
IIRC VN has some struct copy infrastructure which could be used here but unions
are special and that might the cause.
