6d690e5275
This change should make the code more clear (and less code) when adding encodings for instructions with specific immediates; e.g., a constant with a 0 immediate could be encoded as an XOR with something like `const.bind(...)` without explicitly creating the necessary predicates. It has several parts: * Introduce Bindable trait to instructions * Convert all instruction bindings to use Bindable::bind() * Add ability to bind immediates to BoundInstruction This is an attempt to reduce some of the issues in #955.