static bool
gimple_match_and_simplify (code_helper code, tree type, tree op0, tree op1,
               tree op2, code_helper * res_code, tree * res_ops,
               gimple_seq * seq, tree (*valueize) (tree))
{
  if (code == MINUS_EXPR)
    {
      {
    tree o1 = op0;
    if (TREE_CODE (o1) == SSA_NAME)
      {
        gimple def_stmt1 = SSA_NAME_DEF_STMT (o1);
        if (is_gimple_assign (def_stmt1)
        && gimple_assign_rhs_code (def_stmt1) == PLUS_EXPR)
          {
        {
          tree o2 = gimple_assign_rhs1 (def_stmt1);
          if ((o2 = do_valueize (valueize, o2)) != 0)
            {
              {
            tree o3 = gimple_assign_rhs2 (def_stmt1);
            if ((o3 = do_valueize (valueize, o3)) != 0)
              {
                {
                  tree o4 = op1;
                  if (o4 == o3)
                {
/* simplify 0 */
                  {
                    tree captures[4] = { };
                    captures[0] = o2;
                    captures[1] = o3;
                    res_ops[0] = captures[0];
                    *res_code = TREE_CODE (res_ops[0]);
                    return true;
                  }
                }
                }
              }
              }
            }
        }
          }
      }
      }
    }
  return false;
}