/* PR tree-optimization/65215 */ struct S { unsigned long long l1 : 24, l2 : 8, l3 : 32; }; static inline unsigned int foo (unsigned int x) { return (x >> 24) | ((x >> 8) & 0xff00) | ((x << 8) & 0xff0000) | (x << 24); } __attribute__((noinline, noclone)) unsigned long long bar (struct S *x) { unsigned long long x1 = foo (((unsigned int) x->l1 << 8) | x->l2); unsigned long long x2 = foo (x->l3); return (x2 << 32) | x1; } int main () { if (__CHAR_BIT__ != 8 || sizeof (unsigned int) != 4 || sizeof (unsigned long long) != 8) return 0; struct S s = { 0xdeadbeU, 0xefU, 0xfeedbea8U }; unsigned long long l = bar (&s); if (foo (l >> 32) != s.l3 || (foo (l) >> 8) != s.l1 || (foo (l) & 0xff) != s.l2) __builtin_abort (); return 0; }