gcc/testsuite/gcc.dg/vect/vect-vfa-slp.c

/* { dg-require-effective-target vect_int } */

#include <stdarg.h>
#include "tree-vect.h"

#define N 16
struct S
{
  unsigned short a;
  unsigned short b;
};

struct S result[N] = {12, 13, 13, 14, 14, 15, 15, 16, 16, 17, 17, 18,
                      18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 23, 24,
		      24, 25, 25, 26, 26, 27, 27, 28};
struct S X[N] = {10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15, 16,
                 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
		 23, 23, 24, 24, 25, 25};
struct S Y[N] = {};
 
__attribute__ ((noinline)) void
foo (struct S * in, struct S * out)
{
  int i;

  for (i = 0; i < N; i++)
    {
      out[i].a = in[i].a + 2;
      out[i].b = in[i].b + 3;
    }
}

int
main (void)
{ 
  int i;

  check_vect ();

  foo (X, Y);
  
  /* check results:  */
  for (i = 0; i < N; i++)
    {
      if (Y[i].a != result[i].a)
	abort ();

      if (Y[i].b != result[i].b)
	abort ();

    }
  return 0;
} 

/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */