[Bug middle-end/26282] New: Runtime alignment checks are not optimized

["rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

For addresses of memory objects where we know its alignment we should be able
to optimize runtime alignment checks like in

long foo;
void bar(void)
{
  if ((intptr_t)&foo & 3)
    link_error ();
}

and more cases like for function pointers or pmf (#3713).


-- 
           Summary: Runtime alignment checks are not optimized
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: rguenth at gcc dot gnu dot org
OtherBugsDependingO 3713
             nThis:


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26282