solidity/test/libsolidity/semanticTests/operators/shifts/shift_cleanup.sol

contract C {
    function f() public returns (uint16 x) {
        unchecked {
            x = 0xffff;
            x += 32;
            x <<= 8;
            x >>= 16;
        }
    }
}
// ----
// f() -> 0x0