gcc/testsuite/gcc.dg/vect/wrapv-vect-reduc-2char.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 121
   8
   9 signed char b[N] = {1,2,3,6,8,10,12,14,16,18,20,22,24,26,28,30};
  10 signed char c[N] = {1,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15};
  11
  12 __attribute__ ((noinline))
  13 void main1 (signed char x, signed char max_result, signed char min_result)
  14 {
  15   int i;
  16   signed char diff = 2;
  17   signed char max = x;
  18   signed char min = x;
  19
  20   for (i = 0; i < N; i++) {
  21     diff += (signed char)(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_min_max } } } */