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

#include <stdarg.h>

#include "tree-vect.h"

#define N 64

#define DOT1 21834 

#define DOT2 21876

unsigned short X[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));

unsigned short Y[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));

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

   Not detected as a dot-product pattern.

   Requires support for non-widneing multiplication and widening-summation.

   Vectorized with loop-aware SLP. */

__attribute__ ((noinline)) unsigned int

foo1(int len, int *result1, int *result2)

{

  int i;

  unsigned int res1 = 10, res2 = 20;

  unsigned short prod;

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

    prod = X[2*i] * Y[2*i];

    res1 += prod;

    prod = X[2*i+1] * Y[2*i+1];

    res2 += prod;

  }

  *result1 = res1;

  *result2 = res2;

  return 0;

}

int main (void)

{

  unsigned int dot1, dot2;

  unsigned short i;

  check_vect ();

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

    X[i] = i;

    Y[i] = 64-i;

  }

  foo1 (N/2, &dot1, &dot2);

  if (dot1 != DOT1 || dot2 != DOT2)

    abort ();

  return 0;

}

/* The initialization loop in main also gets vectorized.  */

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

/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { target { vect_short_mult && { vect_widen_sum_hi_to_si  && vect_unpack } } } } } */

/* { dg-final { scan-tree-dump-times "vectorizing stmts using SLP" 1 "vect" { xfail { vect_widen_sum_hi_to_si_pattern ||  { ! vect_unpack } } } } } */

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