view gcc/testsuite/gcc.dg/vect/vect-77-alignchecks.c @ 131:84e7813d76e9

gcc-8.2
author mir3636
date Thu, 25 Oct 2018 07:37:49 +0900
parents 04ced10e8804
children 1830386684a0
line wrap: on
line source

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

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

#if VECTOR_BITS > 128
#define N (VECTOR_BITS * 2 / 32)
#define OFF (VECTOR_BITS / 32)
#else
#define N 8
#define OFF 8
#endif

/* Check handling of accesses for which the "initial condition" -
   the expression that represents the first location accessed - is
   more involved than just an ssa_name.  */

int ib[N+OFF] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__))) = {0, 1, 3, 5, 7, 11, 13, 17, 0, 2, 6, 10, 14, 22, 26, 34};

__attribute__ ((noinline))
int main1 (int *ib, int off)
{
  int i;
  int ia[N];

  for (i = 0; i < N; i++)
    {
      ia[i] = ib[i+off];
    }


  /* check results:  */
  for (i = 0; i < N; i++)
    {
     if (ia[i] != ib[i+off])
        abort ();
    }

  return 0;
}

int main (void)
{
  check_vect ();

  main1 (ib, 8);
  return 0;
}

/* For targets that don't support misaligned loads we version for the load.
   The store is aligned if alignment can be forced on the stack. Otherwise, we need to
   peel the loop in order to align the store. For targets that can't align variables
   using peeling (don't guarantee natural alignment) versioning the loop is required
   both for the load and the store.  */

/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
/* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 2 "vect" { target { ! vect_align_stack_vars } xfail { ! vect_unaligned_possible } } } } */
/* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 1 "vect" { target vect_align_stack_vars xfail { ! vect_unaligned_possible } } } } */
/* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 1 "vect" { target { {! vect_no_align} && { unaligned_stack && vector_alignment_reachable } } } } } */
/* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning." 1 "vect" { target { { {! unaligned_stack} && { vect_no_align && { ! vect_hw_misalign } } } || {unaligned_stack && { {! vector_alignment_reachable} && {! vect_no_align } } } } } } } */
/* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning." 2 "vect" { target { { unaligned_stack && { vector_alignment_reachable && vect_no_align } } || {unaligned_stack && { {! vector_alignment_reachable} && vect_no_align } } } } } } */