gcc/testsuite/gcc.dg/vect/vect-reduc-or_2.c

   1 /* { dg-require-effective-target whole_vector_shift } */
   2
   3 /* Write a reduction loop to be reduced using vector shifts and folded.  */
   4
   5 #include "tree-vect.h"
   6
   7 extern void abort(void);
   8
   9 int
  10 main (unsigned char argc, char **argv)
  11 {
  12   unsigned char in[16] __attribute__((aligned(16)));
  13   unsigned char i = 0;
  14   unsigned char sum = 1;
  15
  16   check_vect ();
  17
  18   for (i = 0; i < 16; i++)
  19     in[i] = (i + i + 1) & 0xfd;
  20
  21   for (i = 0; i < 16; i++)
  22     sum |= in[i];
  23
  24   if (sum != 29)
  25     {
  26       __builtin_printf("Failed %d\n", sum);
  27       abort();
  28     }
  29
  30   return 0;
  31 }
  32
  33 /* { dg-final { scan-tree-dump "Reduce using vector shifts" "vect" } } */
  34