Make CAS slightly more realistic
This restricts CAS to only be able to compare literals with literals, NONEV with NONEV and NONEV with SOMEV for a literal.
In particular, we can no longer CAS pairs.
This restricts CAS to only be able to compare literals with literals, NONEV with NONEV and NONEV with SOMEV for a literal.
In particular, we can no longer CAS pairs.