summaryrefslogtreecommitdiff
path: root/gcc/testsuite/gcc.dg/vect/vect-nest-cycle-2.c
blob: 22b1d98de4b675ec093ddf7f8a961ad661135d4c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
/* { dg-require-effective-target vect_float } */

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

#define N 16 

float out[N];
float check_res[N] = {880,864,848,832,816,800,784,768,752,736,720,704,688,672,656,640};
float a[2*N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31};

/* Outer-loop vectorization.  */

__attribute__ ((noinline)) void 
foo () 
{
  int i, j;
  float res;

  for (i = 0; i < N; i++)
    {
      res = 1000;

      for (j = 0; j < N; j++) 
        res = res - a[i+j];
        
      out[i] = res;
    }

  for (i = 0; i < N; i++)  
    if (out[i] != check_res[i])
      abort ();

}

int main ()
{
  check_vect ();

  foo();

  return 0;
}

/* { dg-final { scan-tree-dump-times "OUTER LOOP VECTORIZED" 1 "vect" { xfail vect_no_align } } } */
/* { dg-final { cleanup-tree-dump "vect" } } */