gcc/testsuite/gcc.target/powerpc/20050603-1.c

   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 }