1  /* { dg-do run { target powerpc*-*-* } } */
       2  /* { dg-options "-O2" } */
       3  #include <locale.h>
       4  #include <stdlib.h>
       5  register int *testreg asm ("r29");
       6  
       7  int x;
       8  int y;
       9  int *ext_func (int *p) { return p; }
      10  
      11  void test_reg_save_restore (int*) __attribute__((noinline));
      12  void
      13  test_reg_save_restore (int *p)
      14  {
      15      setlocale (LC_ALL, "C");
      16      testreg = ext_func(p);
      17  }
      18  int
      19  main() {
      20    testreg = &x;
      21    test_reg_save_restore (&y);
      22    if (testreg != &y)
      23      abort ();
      24    return 0;
      25  }