gcc/testsuite/gcc.dg/vect/vect-5.c

   1 /* { dg-require-effective-target vect_float } */
   2 /* { dg-add-options bind_pic_locally } */
   3
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 #define N 16
   8
   9 float a[N];
  10 float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  11 float d[N] = {0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30};
  12
  13 __attribute__ ((noinline))
  14 int main1 ()
  15 {
  16   int i, j;
  17
  18   i = 0;
  19   j = 0;
  20   while (i < 5*N)
  21     {
  22       a[j] = c[j];
  23       i += 5;
  24       j++;
  25     }
  26
  27   /* check results:  */
  28   for (i = 0; i <N; i++)
  29     {
  30       if (a[i] != c[i])
  31         abort ();
  32     }
  33
  34
  35   for (i = N; i > 0; i--)
  36     {
  37       a[N-i] = d[N-i];
  38     }
  39
  40   /* check results:  */
  41   for (i = 0; i < N; i++)
  42     {
  43       if (a[i] != d[i])
  44         abort ();
  45     }
  46
  47   return 0;
  48 }
  49
  50 int main (void)
  51 {
  52   check_vect ();
  53
  54   return main1 ();
  55 }
  56
  57 /* { dg-final { scan-tree-dump-times "vectorized 2 loops" 1 "vect" } } */
  58 /* { dg-final { scan-tree-dump-times "Vectorizing an unaligned access" 0 "vect" } } */