Including ref, iref, func and stack. There is currently no way to get
Thread values.

Phi-nodes and landingpads, which are now collectively called
"edge-assigned" instructions, in the basic block are now evaluated
together in the loop backedge rather than evaluated one at a time. This
mirrors the LLVM's behaviour.

Scala defines a equals() function for case classes which uses structural
equality, but it is not desired in our case.

versions.

It will no longer raise exception for undefined functions.

When an object is moved, the new address should be enqueued, not the old
address.

Also updated testing class structures.