https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96167
Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Severity|normal |enhancement
Last reconfirmed| |2020-07-15
Ever confirmed|0 |1
--- Comment #2 from Eric Botcazou <ebotcazou at gcc dot gnu.org> ---
store-merging certainly has the infrastructure and does it job until:
/* A complete byte swap should make the symbolic number to start with
the largest digit in the highest order byte. Unchanged symbolic
number indicates a read with same endianness as target architecture. */
if (n.n != cmpnop && n.n != cmpxchg)
return false;
where it of course realizes that this is not a proper 64-bit bswap.
