Subversion Repositories openrisc_2011-10-31

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

#include <stdarg.h>

#include "tree-vect.h"

#define N 256

float pa[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));

float pb[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};

float pc[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};

/* Check handling of unaligned accesses when the misalignment is

   known at compile time and different accesses have the same

   misalignment (e.g. peeling to align one access will align all

   accesses with the same misalignment.  Also, the number of

   peeled iterations is known in this case, and the vectorizer

   can use this information (generate prolog and epilog loops

   with known number of iterations, and only if needed).  */

__attribute__ ((noinline)) int

main1 ()

{

  int i;

  for (i = 0; i < 10; i++)

    {

      pa[i+1] = pb[i+1] * pc[i+1];

    }

  /* check results:  */

  for (i = 0; i < 10; i++)

    {

      if (pa[i+1] != (pb[i+1] * pc[i+1]))

        abort ();

    }

  return 0;

}

__attribute__ ((noinline)) int

main2 ()

{

  int i;

  for (i = 0; i < 12; i++)

    {

      pa[i+1] = pb[i+1] * pc[i+1];

    }

  /* check results:  */

  for (i = 0; i < 12; i++)

    {

      if (pa[i+1] != (pb[i+1] * pc[i+1]))

        abort ();

    }

  return 0;

}

__attribute__ ((noinline)) int

main3 (int n)

{

  int i;

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

    {

      pa[i+1] = pb[i+1] * pc[i+1];

    }

  /* check results:  */

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

    {

      if (pa[i+1] != (pb[i+1] * pc[i+1]))

        abort ();

    }

  return 0;

}

int main (void)

{

  int i;

  check_vect ();

  main1 ();

  main2 ();

  main3 (N-1);

  return 0;

}

/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 3 "vect" } } */

/* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0 "vect" } } */

/* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 3 "vect" } } */

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