gcc/testsuite/gcc.dg/vect/vect-110.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 static __attribute__ ((noinline)) int
   9 main1 (void)
  10 {
  11   int i;
  12   float a[N];
  13   float b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
  14   float c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  15
  16   /* Too conservative dependence test.  */
  17   for (i = 0; i < N - 1; i++){
  18     a[i] = b[i] + c[i];
  19     a[i+1] = b[i] + c[i];
  20   }
  21
  22   /* Check results.  */
  23   for (i = 0; i < N - 1; i++){
  24     if (a[i] != b[i] + c[i])
  25         abort ();
  26   }
  27
  28   return 0;
  29 }
  30
  31 int main (void)
  32 {
  33   check_vect ();
  34   return main1 ();
  35 }
  36
  37 /* { dg-final { scan-tree-dump-times "vectorized 0 loops" 1 "vect" } } */
  38
  39