gcc/testsuite/gcc.dg/vect/vect-shift-3.c

   1 /* { dg-require-effective-target vect_shift } */
   2 /* { dg-require-effective-target vect_int } */
   3
   4 #include "tree-vect.h"
   5
   6 #define N 32
   7
   8 unsigned short dst[N] __attribute__((aligned(N)));
   9 unsigned short src[N] __attribute__((aligned(N)));
  10
  11 __attribute__ ((noinline))
  12 void array_shift(void)
  13 {
  14   int i;
  15   for (i = 0; i < N; i++)
  16     dst[i] = src[i] >> 3;
  17 }
  18
  19 int main()
  20 {
  21   volatile int i;
  22   check_vect ();
  23
  24   for (i = 0; i < N; i++)
  25     src[i] = i << 3;
  26
  27   array_shift ();
  28
  29 #pragma GCC novector
  30   for (i = 0; i < N; i++)
  31     if (dst[i] != i)
  32       abort ();
  33
  34   return 0;
  35 }
  36
  37 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */