sdcc/support/regression/tests/bug-2982.c

   1 /* bug-2982.c
   2    A bug in the z80 peephole optimizer.
   3  */
   4
   5 #include <testfwk.h>
   6
   7 #pragma disable_warning 85
   8
   9 static int L, STEP;
  10
  11 void Basic_PRINT(int i)
  12 {
  13   ASSERT (i == 36);
  14 }
  15
  16 signed char Basic_RND(char a)
  17 {
  18   return 51;
  19 }
  20
  21 int f(int argc, char **argv)
  22 {
  23     STEP = Basic_RND(0);
  24     do {
  25         // A load of L into register pair de got optimized out, though it was still needed for the calculation of L + 50
  26         Basic_PRINT((L + 50) / 100);
  27         L += STEP;
  28     } while (!(L > 3600));
  29 }
  30
  31 void testBug(void)
  32 {
  33         L = 3550;
  34         f(0, 0);
  35 }
  36