pub const BITWISE_XOR_LABEL: Felt;
Unique label computed as 1 plus the full chiplet selector with the bits reversed. selector = [1, 0 | 1], flag = rev(selector) + 1 = [1 | 0, 1] + 1 = 6
selector = [1, 0 | 1]
flag = rev(selector) + 1 = [1 | 0, 1] + 1 = 6