gcc/testsuite/gcc.dg/tree-ssa/loop-23.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-O2 -funroll-loops -fdump-tree-cunroll-details" } */
   3
   4 void bla(int);
   5
   6 void foo(void)
   7 {
   8   int i;
   9
  10   /* This loop used to appear to be too large for unrolling.  */
  11   for (i = 0; i < 4; i++)
  12     {
  13       bla (i);
  14       bla (2*i);
  15       bla (3*i);
  16       bla (4*i);
  17       bla (5*i);
  18       bla (6*i);
  19       bla (7*i);
  20       bla (8*i);
  21     }
  22 }
  23
  24 /* { dg-final { scan-tree-dump-times "Unrolled loop 1 completely" 1 "cunroll" } } */
  25
  26 /* { dg-final { cleanup-tree-dump "cunroll" } } */