[Bug tree-optimization/24694] New: Address taken and addressable variables and call clobber

[pinskia at gcc dot gnu dot org]

Take the following code:
int f(int);
int g(void)
{
  int i;
  int *iptr = &i;
  int **ipp = &iptr;
  **ipp = 1;
  f(i);
  return **ipp;
}
----------
Here we consider i being call clobber because we lose the fact that iptr is
addressable but we don't look to see if its address escapes at all (which in
this case it does not).


-- 
           Summary: Address taken and addressable variables and call clobber
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: missed-optimization
          Severity: enhancement
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24694