gcc/testsuite/gcc.dg/pr81192.c

   1 /* { dg-options "-Os -fdump-tree-pre-details" } */
   2
   3 unsigned a;
   4 int b, c;
   5
   6 static int
   7 fn1 (int p1, int p2)
   8 {
   9   return p1 > 2147483647 - p2 ? p1 : p1 + p2;
  10 }
  11
  12 void
  13 fn2 (void)
  14 {
  15   int j;
  16   a = 30;
  17   for (; a;)
  18     for (; c; b = fn1 (j, 1))
  19       ;
  20 }
  21
  22 /* { dg-final { scan-tree-dump-times "(?n)find_duplicates: <bb .*> duplicate of <bb .*>" 1 "pre" } } */