starting to implement register allocation by first creating SA
Single Assignment means a register is only every assigned a value once. Hence for any operation involving another register, a new register is created.
We do this with a naming scheme for the registers in dot notation (as it would be in c) which means 2 registers with the same name, should have the same contents. This does not apply to temporaries, but that is another day.
Starting WIP now, and will create many red commits before merging when green.
Simple is really the descriptive name for the layer
Sure, it is "virtual" but that is not as important as the fact that it is simple (or simplified)
Also objct (based really) is better, since orientated implies it is a little like that, but only orientated, not really it. Sol only has objects, nothing else
Just cause i was renaming anyway
Just for future, as this gives us a way to know immediately in the type, which represent normal, and which singleton classes
Also instantiate singleton class lazily (with singleton type)
This makes the type of class single, ie unique, immediately when it is used, ie methods or variables defined.
Fixes a design mistake, where all singletonn classes shared the same type, and thus unique methods per class were impossible
(Also some misc in commit)
both in mom and risc method complers
alll just compilers now, all linked
Required to move some code down into callable_compiler but all in all quite little. cleaner
seems more appropriate, as it is the class for a single object
Also seems to be called that on the net (don't remember where the meta came from, but it's gone)
after some serious recursive thinking it now actually makes sense.
The key was to change the actual type of the class that the meta_class manages
For objects it's (still) ok just to change the instance_type, but since the class object exists and has type, when adding instance variables, that actual type has to change
Since some weeks, Parfait uses instance variables instead of generated attribute getters (that needed type)
This makes it possible to simplify the boot process, getting rid of separate boot Space and class versions.
It is still quite order dependent, but all "normal" ruby code, (less magic) so easier to understand.
Also moved all code that can never run at runtime into the adapter. This included Space and Object new, space as the space will only ever be created at compile time and object, since that is quite different at run-time (which is where i am working towards)
as they are just the type of the meta_class, that was relatively simple.
I feel this is what oo is meant to be, instance variables and methods for the objects, and since classes are objects, for them too.
Class variables seem like a design mistake, weird scoping rules and no data hiding (left as an exercise to the reader)
args and locals got inlined into message, forgot to delete then
ripples out due to type creation
small type class api change, more ripples, but also more consistent
was using exit, since raise is not implemented. This was ambiguous as all programs exit.
Using :died as special kernel code and bending it, and reporting it in interpreter.
Now we are using a statically linked list of messages. This will not work with procs, but that can be solved then.
Previous (wrong) thinking was that because of procs messages have to be allocated for every call. This was too slow, and not neccessary
