1 /* Asm operands that are given as hard registers must keep the same
2    hard register all the way through compilation.  Example derived
3    from glibc source.  */
4 /* { dg-do compile { target alpha*-*-* } } */
5 /* { dg-options "-O2 -frename-registers -fcprop-registers" } */
6 /* { dg-final { scan-assembler "callsys1 .0 .19 .0 .16 .17" } } */
7 /* { dg-final { scan-assembler "callsys2 .0 .19 .0 .16 .17" } } */
8 
9 struct stat {
10   int dummy;
11 };
12 
13 struct kernel_stat {
14   int dummy;
15 };
16 
17 extern int xstat_conv (int vers, struct kernel_stat *kbuf, void *ubuf);
18 extern int *__errno_location (void) __attribute__ ((__const__));
19 
20 int
21 __fxstat (int vers, int fd, struct stat *buf)
22 {
23   struct kernel_stat kbuf;
24   int result;
25 
26   if (vers == 0)
27     return
28       ({
29 	long _sc_ret, _sc_err;
30 	{
31 	  register long _sc_0 __asm__("$0");
32 	  register long _sc_16 __asm__("$16");
33 	  register long _sc_17 __asm__("$17");
34 	  register long _sc_19 __asm__("$19");
35 	  _sc_0 = 91;
36 	  _sc_16 = (long) (fd);
37 	  _sc_17 = (long) (((struct kernel_stat *) buf));
38 	  __asm__("callsys1 %0 %1 %2 %3 %4"
39 		  : "=r"(_sc_0), "=r"(_sc_19)
40 		  : "0"(_sc_0), "r"(_sc_16), "r"(_sc_17)
41 		  : "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8",
42 		    "$22", "$23", "$24", "$25", "$27", "$28", "memory");
43 	  _sc_ret = _sc_0, _sc_err = _sc_19;
44 	}
45 	if (_sc_err)
46 	  {
47 	    (*__errno_location ()) = (_sc_ret);
48 	    _sc_ret = -1L;
49 	  }
50 	_sc_ret;
51       });
52 
53   result =
54       ({
55 	long _sc_ret, _sc_err;
56 	{
57 	  register long _sc_0 __asm__("$0");
58 	  register long _sc_16 __asm__("$16");
59 	  register long _sc_17 __asm__("$17");
60 	  register long _sc_19 __asm__("$19");
61 	  _sc_0 = 91;
62 	  _sc_16 = (long) (fd);
63 	  _sc_17 = (long) ((&kbuf));
64 	  __asm__("callsys2 %0 %1 %2 %3 %4"
65 		  : "=r"(_sc_0), "=r"(_sc_19)
66 		  : "0"(_sc_0), "r"(_sc_16), "r"(_sc_17)
67 		  : "$1", "$2", "$3", "$4", "$5", "$6", "$7", "$8",
68 		    "$22", "$23", "$24", "$25", "$27", "$28", "memory");
69 	  _sc_ret = _sc_0, _sc_err = _sc_19;
70 	}
71 	if (_sc_err)
72 	  {
73 	    (*__errno_location ()) = (_sc_ret);
74 	    _sc_ret = -1L;
75 	  }
76 	_sc_ret;
77       });
78   if (result == 0)
79     result = xstat_conv (vers, &kbuf, buf);
80 
81   return result;
82 }
83