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