gcc/testsuite/gcc.dg/pr47899.c

   1 /* PR rtl-optimization/47899 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O -funroll-loops" } */
   4
   5 extern unsigned int a, b, c;
   6 extern int d;
   7
   8 static int
   9 foo (void)
  10 {
  11 lab:
  12   if (b)
  13     for (d = 0; d >= 0; d--)
  14       if (a || c)
  15         for (; c; c++)
  16           ;
  17       else
  18         goto lab;
  19 }
  20
  21 int
  22 main ()
  23 {
  24   foo ();
  25   return 0;
  26 }