gnu/dist/gcc4/gcc/testsuite/gcc.dg/tree-ssa/20030807-7.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -fdump-tree-dom3" } */
   3
   4 extern void abort (void);
   5
   6 union tree_node;
   7 typedef union tree_node *tree;
   8 struct tree_common
   9 {
  10   int code;
  11 };
  12 struct tree_list
  13 {
  14   tree purpose;
  15 };
  16 union tree_node
  17 {
  18   struct tree_common common;
  19   struct tree_list list;
  20 };
  21 void
  22 simplify_condition (cond_p)
  23      tree *cond_p;
  24 {
  25   tree decl;
  26   tree cond = *cond_p;
  27   if (cond->common.code != 42)
  28     abort ();
  29   decl = cond->list.purpose;
  30   if (cond->common.code != 42)
  31     abort ();
  32   c_simplify_stmt (&decl);
  33 }
  34
  35 /* There should be exactly one IF conditional.  TBAA is not able to
  36    determine that 'decl' and 'cond' can't alias.  */
  37 /* { dg-final { scan-tree-dump-times "if " 1 "dom3" { xfail *-*-* } } } */
  38 /* { dg-final { cleanup-tree-dump "dom3" } } */