[Bug middle-end/44790] New: Bootstrap fails after MEM-REF merge

[sje at cup dot hp dot com]

GCC fails to bootstrap on ia64-hp-hpux11.23 after r161655.  Building without
bootstrap and running the testsuite shows that tests are failing in 32 bit mode
but not 64 bit mode so the problem is probably ia64's unique method of
extending pointers in 32 bit mode  Most of the failing tests involve va_args.

Here is a cutdown test that fails:

f (int n, ...)
{
  long x;
  int i;

  __builtin_va_list ap;
  __builtin_va_start(ap,n);
  x = __builtin_va_arg(ap,long);
  if (x != 123)
      abort();
  __builtin_va_end(ap);
}

main ()
{
  f (3, (long) 123);
  exit(0);
}


-- 
           Summary: Bootstrap fails after MEM-REF merge
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: sje at cup dot hp dot com
 GCC build triplet: ia64-hp-hpux11.23
  GCC host triplet: ia64-hp-hpux11.23
GCC target triplet: ia64-hp-hpux11.23


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44790