sdcc/support/regression/tests/arithcse.c.in

   1 /* Test arithmetic CSE with /+-*
   2
   3     type: char, short, long
   4     attr: volatile,
   5  */
   6
   7 #include <testfwk.h>
   8
   9 void
  10 test_arithCse(void)
  11 {
  12   {attr} {type} res;
  13   {attr} {type} i = 10;
  14
  15   /* addition with 0 */
  16   res = i + 0;
  17   ASSERT (i == 10);
  18
  19   res = 0 + i;
  20   ASSERT (res == 10);
  21
  22   /* multiplication with 1 */
  23   res = 1 * i;
  24   ASSERT (res == 10);
  25
  26   res = i * 1;
  27   ASSERT (res == 10);
  28
  29   /* multiplication with 0 */
  30   res = 0 * i;
  31   ASSERT (res == 0);
  32
  33   res = i * 0;
  34   ASSERT (res == 0);
  35
  36   /* multiplication with -1 */
  37   res = -1 * i;
  38   ASSERT (res == ({type})-i);
  39
  40   res = i * -1;
  41   ASSERT (res == ({type})-i);
  42
  43   /* division by 1 */
  44   res = i / 1;
  45   ASSERT (res == i);
  46
  47   /* division by -1 */
  48   res = i / -1;
  49   ASSERT (res == ({type})-i);
  50 }