view gcc/testsuite/gcc.dg/vect/vect-peel-1.c @ 111:04ced10e8804

gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children 84e7813d76e9
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line source

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

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

#define N 128

int ib[N+7];

__attribute__ ((noinline))
int main1 ()
{
  int i;
  int ia[N+1];

  /* All the accesses are misaligned. With cost model disabled, we
     count the number of aligned accesses for each peeling option, and
     in this case we align the two loads if possible (i.e., if
     misaligned stores are supported).  */
  for (i = 1; i <= N; i++)
    {
      ia[i] = ib[i+2] + ib[i+6];
    }

  /* check results:  */
  for (i = 1; i <= N; i++)
    {
      if (ia[i] != ib[i+2] + ib[i+6])
        abort ();
    }

  return 0;
}

int main (void)
{ 
  int i;

  check_vect ();

  for (i = 0; i <= N+6; i++)
    {
      asm volatile ("" : "+r" (i));
      ib[i] = i;
    }

  return main1 ();
}

/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
/* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 1 "vect" { target { { vect_element_align } && { vect_aligned_arrays } } } } } */
/* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 1 "vect" } } */