ld/testsuite/ld-gc/gc.c

   1 int unused_var = 7;
   2 int used_var = 7;
   3
   4 int
   5 unused_func (int v)
   6 {
   7   return 3 * unused_var;
   8 }
   9
  10 int
  11 __attribute__((noinline))
  12 used_func (int v)
  13 {
  14   return 2 * used_var;
  15 }
  16
  17 int
  18 main (void)
  19 {
  20   return used_func (5);
  21 }
  22
  23 void
  24 dummy_func (void)
  25 {
  26   /* These are here in case the target prepends an underscore to
  27      the start of function names.  They are inside a dummy function
  28      so that they will appear at the end of gcc's assembler output,
  29      after the definitions of main() and used_func(), rather than
  30      at the beginning of the file.  */
  31
  32   __asm__(".ifndef main\n\
  33 .global main\n\
  34 .set main, _main\n\
  35 .endif");
  36
  37   __asm__(".ifndef used_func\n\
  38 .global used_func\n\
  39 .set used_func, _used_func\n\
  40 .endif");
  41 }