sdcc/support/regression/tests/patch-466.c

   1 /*
   2    patch-466.c - tests for some peephole optimizer rules from patch #466
   3    to optimize theuse of MCs-51 bit instructions.
   4  */
   5
   6 #include <testfwk.h>
   7
   8 #include <stdint.h>
   9 #include <stdbool.h>
  10
  11 uint8_t aaa;
  12 uint8_t bbb;
  13
  14 uint8_t get_bleh (uint8_t x)
  15 {
  16   bool x0 = x != aaa;
  17   bool x1 = x != bbb;
  18
  19   return (!x0 | !x1) ? 0xFF : 0x00;
  20 }
  21
  22 void testPatch(void)
  23 {
  24   aaa = 0;
  25   bbb = 0;
  26   ASSERT (get_bleh (0) == 0xff);
  27   ASSERT (get_bleh (1) == 0x00);
  28
  29   aaa = 0;
  30   bbb = 1;
  31   ASSERT (get_bleh (0) == 0xff);
  32   ASSERT (get_bleh (1) == 0xff);
  33
  34   aaa = 1;
  35   bbb = 0;
  36   ASSERT (get_bleh (0) == 0xff);
  37   ASSERT (get_bleh (1) == 0xff);
  38
  39   aaa = 1;
  40   bbb = 1;
  41   ASSERT (get_bleh (0) == 0x00);
  42   ASSERT (get_bleh (1) == 0xff);
  43 }
  44