[Bug optimization/13953] New: [tree-ssa] SRA does not work for structs that contain a struct as a member

["dann at godzilla dot ics dot uci dot edu" <gcc-bugzilla at gcc dot gnu dot org>]

SRA does not work for structs that contain a struct as a member.
This is a known issue, filed so that it can be tracked. 

/* { dg-do compile } */ 
/* { dg-options "-O1 -fdump-tree-optimized" } */

void link_error (void);

typedef struct teststruct
{
  double d;
  char f1;
  struct foo {
    char f2;
  } m;
} teststruct;

void
copystruct4 (teststruct param)
{
  teststruct local;
  param.f1 = 0;
  local = param;
  if (local.f1 != 0)
    link_error ();
}
/* There should be no reference to link_error. */
/* { dg-final { scan-tree-dump-times "link_error" 0 "optimized"} } */

-- 
           Summary: [tree-ssa] SRA does not work for structs that contain a
                    struct as a member
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dann at godzilla dot ics dot uci dot edu
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13953