[Bug optimization/13954] [tree-ssa] SRA does not work for classes that use inheritance

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

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-01-31 21:23 -------
Confirmed, the problem here is more complicated:
Cannot scalarize variable param because it must live in memory
Cannot scalarize variable local because it must live in memory
Cannot scalarize variable MT.3 because it must live in memory

The problem here is that:
void copystruct1(teststruct) (param)
{
  struct 
  {
    double d;
    char f1;
  } * local.0;
  struct 
  {
    double d;
    char f1;
  } * param.1;
  char T.2;

  {
    struct teststruct local;

    param.f1 = 0;
    local.0 = (struct 
    {
      double d;
      char f1;
    } *)&local;
    param.1 = (struct 
    {
      double d;
      char f1;
    } *)&param;
    *local.0 = *param.1;
    {
      T.2 = local.f1;
      if (T.2 != 0)
        {
          {
            link_error ();
          }
        }
      else
        {
          
        }
    }
  }
}

Which means it does not using the right structs assigning or something werid is going on.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |enhancement
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
           Keywords|                            |pessimizes-code
   Last reconfirmed|0000-00-00 00:00:00         |2004-01-31 21:23:56
               date|                            |
   Target Milestone|---                         |tree-ssa


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13954