gcc/testsuite/gcc.dg/vect/vect-reduc-1char.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 242
   8
   9 unsigned char ub[N] = {1,3,6,9,12,15,18,21,24,27,30,33,36,39,42,45};
  10 unsigned char uc[N] = {1,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  11
  12 __attribute__ ((noinline)) void
  13 main1 (unsigned char x, unsigned char max_result, unsigned char min_result)
  14 {
  15   int i;
  16   unsigned char udiff = 2;
  17   unsigned char umax = x;
  18   unsigned char umin = x;
  19
  20   for (i = 0; i < N; i++) {
  21     udiff += (unsigned char)(ub[i] - uc[i]);
  22   }
  23
  24   for (i = 0; i < N; i++) {
  25     umax = umax < uc[i] ? uc[i] : umax;
  26   }
  27
  28   for (i = 0; i < N; i++) {
  29     umin = umin > uc[i] ? uc[i] : umin;
  30   }
  31
  32   /* check results:  */
  33   if (udiff != DIFF)
  34     abort ();
  35   if (umax != max_result)
  36     abort ();
  37   if (umin != 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_min_max } } } */