gcc/testsuite/gcc.dg/tree-ssa/20031022-1.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-dom1" } */
   3
   4 typedef struct edge_def
   5 {
   6   int z;
   7 } *edge;
   8 typedef struct basic_block_def
   9 {
  10   edge pred;
  11 } *basic_block;
  12 extern struct basic_block_def entry_exit_blocks[2];
  13 void
  14 blah (int arf)
  15 {
  16   edge e;
  17   e = (&entry_exit_blocks[1])->pred;
  18   for ( ; ;)
  19     if (arf)
  20       break;
  21   commit_edge_insertions ();
  22   e = (&entry_exit_blocks[1])->pred;
  23   foo (e);
  24 }
  25
  26 /* There should be one load from entry_exit_blocks[1].pred.  */
  27 /* { dg-final { scan-tree-dump-times "entry_exit_blocks.1..pred" 1 "dom1"} } */
  28 /* { dg-final { cleanup-tree-dump "dom1" } } */