gnu/dist/gcc4/gcc/testsuite/gcc.c-torture/pr20583.c

   1 /* PR target/20583
   2    On m68k-none-elf, CSE used to generate
   3
   4      (set (reg:HI ...)
   5           (const:HI (truncate:HI (minus:SI (label_ref ...)
   6                                            (label_ref ...)))))
   7
   8    which output functions do not know how to handle.  Make sure that
   9    such a constant will be rejected.  */
  10
  11 void bar (unsigned int);
  12
  13 void
  14 foo (void)
  15 {
  16   char buf[1] = { 3 };
  17   const char *p = buf;
  18   const char **q = &p;
  19   unsigned int ch;
  20   switch (**q)
  21     {
  22     case 1:  ch = 5; break;
  23     case 2:  ch = 4; break;
  24     case 3:  ch = 3; break;
  25     case 4:  ch = 2; break;
  26     case 5:  ch = 1; break;
  27     default: ch = 0; break;
  28     }
  29   bar (ch);
  30 }