[LogicCombine 1/?] Implement a general way to simplify logical operations.

This patch involves boolean ring to simplify logical operations. We can treat `&` as ring multiplication and `^` as ring addition.
So we need to canonicalize all other operations to `*` `+`. Like:
```
a & b -> a * b
a ^ b -> a + b
~a -> a + 1
a | b -> a * b + a + b
c ? a : b -> c * a + (c + 1) * b
```
In the code, we use a mask set to represent an expression. Every value that is not comes from logical operations could be a bit in the mask.
The mask itself is a multiplication chain. The mask set is an addiction chain.
We can calculate two expressions based on boolean algebras.

For now, the initial patch only enabled on and/or/xor,  Later we can enhance the code step by step.

Reference: https://en.wikipedia.org/wiki/Boolean_ring

Reviewed By: spatel

Differential Revision: https://reviews.llvm.org/D142803

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