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 __attribute__ ((noinline))
  13 int main1 (int n)
  14 {
  15   int i=0;
  16
  17   /* Vectorized: unknown loop bound.  */
  18   while (n--) {
  19     a[i] = b[i];
  20     i++;
  21   }
  22
  23   /* check results:  */
  24   for (i = 0; i < n; i++)
  25     {
  26       if (a[i] != b[i])
  27         abort ();
  28     }
  29
  30   return 0;
  31 }
  32
  33 __attribute__ ((noinline))
  34 int main2 (unsigned int n)
  35 {
  36   int i=0;
  37   int nn = n;
  38
  39   /* Vectorized: unknown loop bound.  */
  40   while (n--) {
  41     c[i] = b[i];
  42     i++;
  43   }
  44
  45   /* check results:  */
  46   for (i = 0; i < nn; i++)
  47     {
  48       if (c[i] != b[i])
  49         abort ();
  50     }
  51
  52   return 0;
  53 }
  54
  55 int main (void)
  56 {
  57   check_vect ();
  58
  59   main1 (N);
  60   main2 (N);
  61   return 0;
  62 }
  63
  64 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 2 "vect" } } */