gcc/testsuite/gcc.target/i386/rotate-3.c

   1 /* { dg-do compile } */
   2 /* { dg-require-effective-target avx2 } */
   3 /* { dg-options "-O3 -mavx2 -fdump-tree-vect-details" } */
   4 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
   5 /* { dg-final { cleanup-tree-dump "vect" } } */
   6
   7 unsigned int a[1024] __attribute__((aligned (32)));
   8
   9 __attribute__((noinline, noclone)) void
  10 foo (void)
  11 {
  12   int i;
  13   for (i = 0; i < 1024; i++)
  14     {
  15       int j = i & 31;
  16       a[i] = (a[i] << j) | (a[i] >> ((-j) & 31));
  17     }
  18 }