1 /* PR tree-optimization/65215 */ 2 3 struct S { unsigned long long l1 : 24, l2 : 8, l3 : 32; }; 4 5 static inline unsigned int foo(unsigned int x)6foo (unsigned int x) 7 { 8 return (x >> 24) | ((x >> 8) & 0xff00) | ((x << 8) & 0xff0000) | (x << 24); 9 } 10 11 __attribute__((noinline, noclone)) unsigned long long bar(struct S * x)12bar (struct S *x) 13 { 14 unsigned long long x1 = foo (((unsigned int) x->l1 << 8) | x->l2); 15 unsigned long long x2 = foo (x->l3); 16 return (x2 << 32) | x1; 17 } 18 19 int main()20main () 21 { 22 if (__CHAR_BIT__ != 8 || sizeof (unsigned int) != 4 || sizeof (unsigned long long) != 8) 23 return 0; 24 struct S s = { 0xdeadbeU, 0xefU, 0xfeedbea8U }; 25 unsigned long long l = bar (&s); 26 if (foo (l >> 32) != s.l3 27 || (foo (l) >> 8) != s.l1 28 || (foo (l) & 0xff) != s.l2) 29 __builtin_abort (); 30 return 0; 31 } 32