gcc/testsuite/gcc.dg/vect/vect-reduc-3.c

   1 /* { dg-require-effective-target vect_int } */
   2
   3 #include <stdarg.h>
   4 #include "tree-vect.h"
   5
   6 #define N 16
   7
   8 unsigned int ub[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
   9 unsigned int uc[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  10
  11 /* Test vectorization of reduction of unsigned-int in the presence
  12    of unknown-loop-bound.  */
  13
  14 __attribute__ ((noinline))
  15 int main1 (int n, int res)
  16 {
  17   int i;
  18   unsigned int udiff;
  19
  20   udiff = 0;
  21   for (i = 0; i < n; i++) {
  22     udiff += (ub[i] - uc[i]);
  23   }
  24
  25   /* check results:  */
  26   if (udiff != res)
  27     abort ();
  28
  29   return 0;
  30 }
  31
  32 int main (void)
  33 {
  34   check_vect ();
  35
  36   main1 (N, 240);
  37   main1 (N-1, 210);
  38   return 0;
  39 }
  40
  41 /* { dg-final { scan-tree-dump-times "vectorized 1 loops" 1 "vect" { xfail vect_no_int_add } } } */
  42 /* { dg-final { cleanup-tree-dump "vect" } } */