gcc/testsuite/gcc.dg/tree-ssa/20030714-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-dom2" } */
   3
   4
   5 union tree_node;
   6 typedef union tree_node *tree;
   7 extern const char tree_code_type[];
   8 struct tree_common
   9 {
  10   int code;
  11   tree type;
  12 };
  13 struct tree_exp
  14 {
  15   tree operands[1];
  16 };
  17 union tree_node
  18 {
  19   struct tree_common common;
  20   struct tree_exp exp;
  21 };
  22 long
  23 get_alias_set (t)
  24      tree t;
  25 {
  26   if (tree_code_type[t->common.code] != 't' && t->common.type == 0)
  27     return 0;
  28   if (tree_code_type[t->common.code] != 't')
  29     {
  30       while (t->exp.operands[0])
  31         t = t->exp.operands[0];
  32     }
  33 }
  34
  35 /* There should be exactly three IF conditionals if we thread jumps
  36    properly.  */
  37 /* { dg-final { scan-tree-dump-times "if " 3 "dom2"} } */
  38