1 /* { dg-do compile { target alpha*-*-* ia64*-*-* x86_64-*-* s390x-*-* } } */
2 /* { dg-options "-O2" } */
3 /* { dg-require-effective-target lp64 } */
4
5 /* PR middle-end/40501 */
6
7 /* This once failed due to the bswap pass missing to add the type
8 casts of the signed argument and result to the proper unsigned
9 types. */
10
11 typedef long int int64_t;
12
13 int64_t
swap64(int64_t n)14 swap64 (int64_t n)
15 {
16 return (((n & (((int64_t) 0xff) )) << 56) |
17 ((n & (((int64_t) 0xff) << 8)) << 40) |
18 ((n & (((int64_t) 0xff) << 16)) << 24) |
19 ((n & (((int64_t) 0xff) << 24)) << 8) |
20 ((n & (((int64_t) 0xff) << 32)) >> 8) |
21 ((n & (((int64_t) 0xff) << 40)) >> 24) |
22 ((n & (((int64_t) 0xff) << 48)) >> 40) |
23 ((n & (((int64_t) 0xff) << 56)) >> 56));
24 }
25