presto-orc/src/main/java/io/prestosql/orc/stream/LongBitPacker.java/LongBitPacker/unpack2Unaligned
class LongBitPacker:    private static void unpack2Unaligned(long[] buffer, int outputIndex, int length, int value)
    {
        switch (length) {
            case 3:
                buffer[outputIndex + 2] = (0b0000_1100 & value) >>> 2;
                //noinspection fallthrough
            case 2:
                buffer[outputIndex + 1] = (0b0011_0000 & value) >>> 4;
                //noinspection fallthrough
            case 1:
                buffer[outputIndex] = (0b1100_0000 & value) >>> 6;
        }
    }