http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60092
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2014-02-06
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
As of posix_memalign the issue is not so much that of alias analysis (we could
handle it but we don't have a builtin right now) but that of alignment analysis
which doesn't implement alignment tracking of pointers stored in memory. We
could "lower"
posix_memalign (&ptr, align, size);
to
posix_memalign (&ptr, align, size);
ptr = __builtin_assume_algined (ptr, align);
and hope for FRE to fix things up enough to make that useful.
