gnu/dist/gcc4/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 void main1 (int x, int max_result, int min_result)
  12 {
  13   int i;
  14   int b[N] = {1,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
  15   int c[N] = {1,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  16   int diff = 0;
  17   int max = x;
  18   int min = x;
  19
  20   for (i = 0; i < N; i++) {
  21     diff += (b[i] - c[i]);
  22   }
  23
  24   for (i = 0; i < N; i++) {
  25     max = max < c[i] ? c[i] : max;
  26   }
  27
  28   for (i = 0; i < N; i++) {
  29     min = min > c[i] ? c[i] : min;
  30   }
  31
  32   /* check results:  */
  33   if (diff != DIFF)
  34     abort ();
  35   if (max != max_result)
  36     abort ();
  37   if (min != min_result)
  38     abort ();
  39 }
  40
  41 int main (void)
  42 {
  43   check_vect ();
  44
  45   main1 (100, 100, 1);
  46   main1 (0, 15, 0);
  47   return 0;
  48 }
  49
  50 /* { dg-final { scan-tree-dump-times "vectorized 3 loops" 1 "vect" { xfail { vect_no_int_add || vect_no_int_max } } } } */
  51 /* { dg-final { cleanup-tree-dump "vect" } } */