This change makes `CMakeLists.txt` files less verbose and allows proper
registration of debug `Logger`s from revamb `Support` library,
enabling their use without manually enabling them.
This also means that they can be properly enabled with command line
arguments and that we can remove some hacks in the code that was put in
place to work around this limitation.
First concept of short-circuit simplification.
The `isEqual` operator between ASTNodes is very limited (it does only
check if two nodes originate from the same `BasicBlock` in the original
IR.
Outlined the removal of nodes not reachable from the entry node in an
external function. This is useful to reuse the function not only for the
main graph, but also for the collapsed regions.
In this way we can remove not reachable nodes in the inner regions, such
as dandling `break` and `continue` nodes (found in an endless loop).
This fix enables the correct updating of the backedges present in the
graph, since each transformation pass could in principle modify some of
the backedges present in the graph
We now avoid the absorption of some successor node in a metaregion, if
such node is already part of another processed metaregion, to avoid
breaking the nested structure of the metaregions.
Pietro Fezzardi