https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79279
Aurelien Buhrig <aurelien.buhrig.gcc at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |WONTFIX
--- Comment #2 from Aurelien Buhrig <aurelien.buhrig.gcc at gmail dot com> ---
According to the above gcc-patches discussion,
checking m2 -> m1 is required to be sure that the new reg:m2 interpreted as m1
is valid.
So both checks would be needed. But although the m1 -> m2 transformation is
invalid, this change should be filtered by predicates (from general_operand)
which wasn't.
So no need to fix, unless maybe speeding up the combine process.
