gcc/testsuite/gcc.dg/vect/bb-slp-4.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include <stdio.h>
   5 #include "tree-vect.h"
   6
   7 #define N 16
   8
   9 unsigned short out[N];
  10 unsigned short in[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  11
  12 int i;
  13 __attribute__ ((noinline)) int
  14 main1 ()
  15 {
  16   unsigned short *pin = &in[0];
  17   unsigned short *pout = &out[0];
  18
  19   *pout++ = *pin++;
  20   *pout++ = *pin++;
  21
  22   if (i)
  23     __asm__ volatile ("" : : : "memory");
  24
  25   /* Check results.  */
  26   if (out[0] != in[0]
  27       || out[1] != in[1])
  28     abort();
  29
  30   return 0;
  31 }
  32
  33 int main (void)
  34 {
  35   check_vect ();
  36
  37   main1 ();
  38
  39   return 0;
  40 }
  41
  42 /* { dg-final { scan-tree-dump-times "basic block vectorized using SLP" 0 "slp" } } */
  43 /* { dg-final { cleanup-tree-dump "slp" } } */
  44