1 /* PR tree-optimization/81396 */
2 /* { dg-do compile } */
3 /* { dg-options "-O2 -fdump-tree-optimized" } */
4 
5 typedef unsigned long long uint64_t;
6 
7 uint64_t
foo(uint64_t word)8 foo (uint64_t word)
9 {
10 #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ && __SIZEOF_LONG_LONG__ == 8
11   const unsigned char *const ptr = (const unsigned char *) &word;
12   return ((uint64_t) ptr[0]
13 	  | ((uint64_t) ptr[1] << 8)
14 	  | ((uint64_t) ptr[2] << (8 * 2))
15 	  | ((uint64_t) ptr[3] << (8 * 3))
16 	  | ((uint64_t) ptr[4] << (8 * 4))
17 	  | ((uint64_t) ptr[5] << (8 * 5))
18 	  | ((uint64_t) ptr[6] << (8 * 6))
19 	  | ((uint64_t) ptr[7] << (8 * 7)));
20 #else
21   return word;
22 #endif
23 }
24 
25 /* { dg-final { scan-tree-dump "return word_\[0-9]*\\(D\\);" "optimized" } } */
26