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

#include <stdarg.h>

#include "tree-vect.h"

#define N 40

#define M 128

float in[N+M];

float coeff[M];

float out[N];

float fir_out[N];

/* Should be vectorized. Fixed misaligment in the inner-loop.  */

/* Currently not vectorized because we get too many BBs in the inner-loop,

   because the compiler doesn't realize that the inner-loop executes at

   least once (cause k<4), and so there's no need to create a guard code

   to skip the inner-loop in case it doesn't execute.  */

__attribute__ ((noinline))

void foo (){

 int i,j,k;

 float diff;

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

  out[i] = 0;

 }

 for (k = 0; k < 4; k++) {

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

    diff = 0;

    for (j = k; j < M; j+=4) {

      diff += in[j+i]*coeff[j];

    }

    out[i] += diff;

  }

 }

}

/* Vectorized. Changing misalignment in the inner-loop.  */

__attribute__ ((noinline))

void fir (){

  int i,j,k;

  float diff;

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

    diff = 0;

    for (j = 0; j < M; j++) {

      diff += in[j+i]*coeff[j];

    }

    fir_out[i] = diff;

  }

}

int main (void)

{

  check_vect ();

  int i, j;

  float diff;

  for (i = 0; i < M; i++)

    coeff[i] = i;

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

    in[i] = i;

  foo ();

  fir ();

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

    if (out[i] != fir_out[i])

      abort ();

  }

  return 0;

}

/* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 2 "vect" { xfail *-*-* } } } */

/* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 1 "vect" { xfail vect_no_align } } } */

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