view gcc/testsuite/gcc.dg/vect/vect-50.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_float } */
/* { dg-additional-options "--param vect-max-peeling-for-alignment=0" } */

#include "tree-vect.h"

#define N 256

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

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

  return;
}

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

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

  bar (pa,pb,pc);

  return 0;
}

/* Unaligned pointer accesses, with unknown alignment.
   The loop bound is unknown.
   No aliasing problems.
   vect-44.c is similar to this one with one difference:
        the loop bound is known.  
   vect-51.c is similar to this one with one difference:
        can't prove that pointers don't alias.  */

int main (void)
{
  int i;
  float a[N];
  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,a,b,c);
  return 0;
}

/* For targets that don't support misaligned loads and don't support
   misaligned stores we version for the all three accesses (peeling to
   align the store will not force the two loads to be aligned).  */

/* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" } } */
/* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 3 "vect" { xfail { ! vect_unaligned_possible } } } } */
/* { dg-final { scan-tree-dump-times "Alignment of access forced using peeling" 0 "vect" { xfail { { vect_no_align && { ! vect_hw_misalign } } || {! vector_alignment_reachable} } } } } */
/* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning." 3 "vect" { target { vect_no_align && { ! vect_hw_misalign } } } } } */
/* { dg-final { scan-tree-dump-times "Alignment of access forced using versioning." 1 "vect" { target { {! vector_alignment_reachable} && { {! vect_no_align } && {! vect_hw_misalign } } } } } } */