sdcc/support/regression/tests/bug-2826.c

   1 /*
   2    bug-2826.c
   3    An optimization inserted instructions in between IPUSH and CALL which resulted in wrong code for mcs51.
   4 */
   5
   6 #include <testfwk.h>
   7
   8 #define DS_CMD_RAM 1 << 6
   9
  10 unsigned char cfg_table[4];
  11
  12 unsigned char f(unsigned char j)
  13 {
  14         static unsigned char testval = DS_CMD_RAM >> 1 | 2;
  15         ASSERT(j == testval);
  16         testval++;
  17         return(0);
  18 }
  19
  20 void testBug(void)
  21 {
  22         unsigned char i, j;
  23         j = DS_CMD_RAM >> 1 | 2;
  24         for (i = 0; i != 4; i++)
  25                 cfg_table[i] = f(j++); // The incremented value got passed to f for mcs51.
  26 }
  27