gnu/dist/gcc4/gcc/testsuite/gcc.dg/tree-ssa/20030807-3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O1 -fdump-tree-dom3" } */
   3
   4 typedef unsigned int cppchar_t;
   5 cppchar_t
   6 cpp_parse_escape (pstr, limit, wide)
   7      const unsigned char **pstr;
   8      const unsigned char *limit;
   9      int wide;
  10 {
  11   cppchar_t i = 0;
  12   int overflow = 0;
  13   cppchar_t mask = ~0;
  14
  15    while (*pstr < limit)
  16      {
  17        overflow |= i ^ (i << 4 >> 4);
  18        i = oof ();
  19      }
  20    if (overflow |  (i != (i & mask)))
  21      foo();
  22 }
  23
  24 /* There should be precisely three IF statements.  If there is
  25    more than two, then the dominator optimizations failed.  */
  26 /* { dg-final { scan-tree-dump-times "if " 3 "dom3"} } */
  27 /* { dg-final { cleanup-tree-dump "dom3" } } */