gcc/testsuite/gcc.dg/vect/vect-reduc-2.c

   1
   2 /* { dg-require-effective-target vect_int } */
   3
   4 #include <stdarg.h>
   5 #include "tree-vect.h"
   6
   7 #define N 16
   8 #define DIFF 242
   9
  10 /* Test vectorization of reduction of signed-int.  */
  11
  12 int main1 (int x, int max_result)
  13 {
  14   int i;
  15   int b[N] = {0,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
  16   int c[N] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  17   int diff = 2;
  18   int max = x;
  19   int min = 10;
  20
  21   for (i = 0; i < N; i++) {
  22     diff += (b[i] - c[i]);
  23   }
  24
  25   for (i = 0; i < N; i++) {
  26     max = max < c[i] ? c[i] : max;
  27   }
  28
  29   for (i = 0; i < N; i++) {
  30     min = min > c[i] ? c[i] : min;
  31   }
  32
  33   /* check results:  */
  34   if (diff != DIFF)
  35     abort ();
  36   if (max != max_result)
  37     abort ();
  38   if (min != 0)
  39     abort ();
  40
  41   return 0;
  42 }
  43
  44 int main (void)
  45 {
  46   check_vect ();
  47
  48   return main1 (100, 100);
  49   return main1 (0, 15);
  50 }
  51
  52 /* { dg-final { scan-tree-dump-times "vectorized 3 loops" 1 "vect" { xfail {! vect_reduction} } } } */
  53 /* { dg-final { cleanup-tree-dump "vect" } } */