1  /* { dg-do compile } */
       2  /* { dg-options "-w -O2 -fdump-tree-optimized" } */
       3  
       4  static __inline__ __attribute__((__always_inline__))
       5  void syscall_7 (int val)
       6  {
       7    register int reg __asm ("4") = val;
       8    __asm __volatile__ ("/* Some Code %0 */" :: "r" (reg));
       9  }
      10  
      11  void do_syscalls (void)
      12  {
      13    for (int s = 0; s < 2; s++)
      14      {
      15        syscall_7 (0);
      16        syscall_7 (1);
      17      }
      18  }
      19  
      20  /* { dg-final { scan-tree-dump-times "reg = " 4 "optimized" } } */