llvm-gcc-4.2/gcc/testsuite/gcc.dg/vect/vect-95.c

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

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

#define N 256

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;
}


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__(16)));
  float d[N+1] __attribute__ ((__aligned__(16)));
  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;
}

/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
/* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 0 "vect" } } */

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