gcc/testsuite/gcc.dg/vect/vect-reduc-2.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 signed-int.  */
  10
  11 __attribute__ ((noinline))
  12 void main1 (int x, int max_result, int min_result)
  13 {
  14   int i;
  15   int b[N] = {1,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
  16   int c[N] = {1,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  17   int diff = 0;
  18   int max = x;
  19   int min = x;
  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 != min_result)
  39     abort ();
  40 }
  41
  42 int main (void)
  43 {
  44   check_vect ();
  45
  46   main1 (100, 100, 1);
  47   main1 (0, 15, 0);
  48   return 0;
  49 }
  50
  51 /* { dg-final { scan-tree-dump-times "vectorized 3 loops" 1 "vect" { xfail { vect_no_int_add || vect_no_int_max } } } } */
  52 /* { dg-final { cleanup-tree-dump "vect" } } */