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

#include <stdarg.h>

#include "tree-vect.h"

#define N 64

#define DOT1 43680

signed char X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));

signed char Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));

/* char->short->int dot product.

   The dot-product pattern should be detected.

   Vectorizable on vect_sdot_qi targets (targets that support dot-product of

   signed chars).

   In the future could also be vectorized as widening-mult + widening-summation,

   or with type-conversion support.

 */

__attribute__ ((noinline)) int

foo1(int len) {

  int i;

  int result = 0;

  short prod;

  for (i=0; i<len; i++) {

    prod = X[i] * Y[i];

    result += prod;

  }

  return result;

}

int main (void)

{

  int i, dot1;

  check_vect ();

  for (i=0; i<N; i++) {

    X[i] = i;

    Y[i] = 64-i;

    __asm__ volatile ("");

  }

  dot1 = foo1 (N);

  if (dot1 != DOT1)

    abort ();

  return 0;

}

/* { dg-final { scan-tree-dump-times "vect_recog_dot_prod_pattern: detected" 1 "vect" } } */

/* { dg-final { scan-tree-dump-times "vect_recog_widen_mult_pattern: detected" 1 "vect" } } */

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

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

/* { dg-final { cleanup-tree-dump "vect" } } */