gcc/testsuite/gcc.dg/vect/vect-30.c

   1 /* { dg-require-effective-target vect_float } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 16
   7
   8 float b[N] = {0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30};
   9 float a[N];
  10 float c[N];
  11
  12 int main1 (int n)
  13 {
  14   int i=0;
  15
  16   /* Vectorized: unknown loop bound.  */
  17   while (n--) {
  18     a[i] = b[i];
  19     i++;
  20   }
  21
  22   /* check results:  */
  23   for (i = 0; i < n; i++)
  24     {
  25       if (a[i] != b[i])
  26         abort ();
  27     }
  28
  29   return 0;
  30 }
  31
  32 int main2 (unsigned int n)
  33 {
  34   int i=0;
  35   int nn = n;
  36
  37   /* Vectorized: unknown loop bound.  */
  38   while (n--) {
  39     c[i] = b[i];
  40     i++;
  41   }
  42
  43   /* check results:  */
  44   for (i = 0; i < nn; i++)
  45     {
  46       if (c[i] != b[i])
  47         abort ();
  48     }
  49
  50   return 0;
  51 }
  52
  53 int main (void)
  54 {
  55   check_vect ();
  56
  57   main1 (N);
  58   main2 (N);
  59   return 0;
  60 }
  61
  62 /* Need misalignment support, or cgraph to delay emitting the arrays until
  63    after vectorization can force-align them.  */
  64 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" { xfail vect_no_align } } } */