gcc/testsuite/gcc.dg/pr36508.c

   1 /* PR tree-optimization/36508 */
   2 /* { dg-do compile } */
   3 /* { dg-options "-O -ftree-pre" } */
   4
   5 void
   6 foo (short *sp)
   7 {
   8   int k;
   9   k = 1;
  10 #define SP0 *sp++ = 1;
  11   while (1)
  12     {
  13       if (k > 6)
  14         break;
  15       SP0
  16       k++;
  17     }
  18   k = 1;
  19   while (1)
  20     {
  21       if (k > 6)
  22         break;
  23       SP0
  24       k++;
  25     }
  26 #define SP1 SP0 SP0 SP0 SP0 SP0 SP0 SP0 SP0 SP0 SP0 SP0
  27 #define SP2 SP1 SP1 SP1 SP1 SP1 SP1 SP1 SP1 SP1 SP1 SP1
  28   SP2
  29 }