gcc/testsuite/gcc.dg/vect/vect-95.c

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

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

#define N 256

__attribute__ ((noinline))
void bar (float *pd, float *pa, float *pb, float *pc) 
{
  int i;

  /* check results:  */
  for (i = 0; i < N; i++)
    {
      if (pa[i] != (pb[i] * pc[i]))
	abort ();
      if (pd[i] != 5.0)
	abort ();
    }

  return;
}


__attribute__ ((noinline)) int
main1 (int n, float * __restrict__ pd, float * __restrict__ pa, float * __restrict__ pb, float * __restrict__ pc)
{
  int i;

  for (i = 0; i < n; i++)
    {
      pa[i] = pb[i] * pc[i];
      pd[i] = 5.0;
    }

  bar (pd,pa,pb,pc);

  return 0;
}

int main (void)
{
  int i;
  float a[N] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
  float d[N+1] __attribute__ ((__aligned__(__BIGGEST_ALIGNMENT__)));
  float b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57};
  float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19};

  check_vect ();

  main1 (N,&d[1],a,b,c);
  main1 (N-2,&d[1],a,b,c);

  return 0;
}

/* For targets that support unaligned loads we version for the two unaligned 
   stores and generate misaligned accesses for the loads. For targets that 
   don't support unaligned loads we version for all four accesses.  */

/* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 2 "vect" { xfail { vect_no_align || vect_element_align} } } }  */
/* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 2 "vect" { xfail { vect_no_align || vect_element_align } } } } */
/*  { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0 "vect" { target { vect_no_align && { ! vect_hw_misalign } } } } } */
/*  { dg-final { scan-tree-dump-times "Alignment of access forced using versioning" 4 "vect" { target { vect_no_align && { ! vect_hw_misalign } } } } } */