SAOC LLDB D integration: 10th Weekly Update

[Luís Ferreira]

Hi D community!

I'm here again, to describe what I've done during the tenth week of
Symmetry
Autumn of Code.

## LLVM upstream follow up update

During the discussion for the next patch in the train, 4 more patches
have been
raised, due to request to split it even more:

- https://reviews.llvm.org/D114305
- https://reviews.llvm.org/D114307
- https://reviews.llvm.org/D114308
- https://reviews.llvm.org/D114309

Some more changes were made on other existing patches due to further
discussion
on implementation details.

## Minimal TypeSystem for D

This week I finally focused on getting a minimal TypeSystem working for
D on
the LLDB. This means nothing to the end user and huge change need to be
made to
make it functional exactly the same as is right now, the main
difference is
that, instead of relying on Clang type system, we have our own.

For now it has the Clang type system disabled and detects D as usual,
but does
nothing, when requesting any type information.

The current changes for the implementation of D TypeSystem will be in
[this](https://github.com/ljmf00/lldb-d/pull/1) PR.

I decided to create a seperate repository for this until I have a
decent plugin
to upstream. As this might take a while to implement, I would like to
ask the
community if it is worth to do some builds to several platforms with
the
demangling and language formatters enabled? I'm particularly asking
this since
building LLVM is a beefy task and some may not be able to do it easily
with
their machine. What is your thoughts?

## What is next?

I will continue implementing TypeSystem for D as well as a new type
wrapper to
represent a D type. I'm going to start adding support for very basic
types.

This post will be available on my blog soon:
https://lsferreira.net/posts/d-saoc-2021-10 (I'm having some issues on
publishing it on IPFS using public nodes, but it will eventually be
there).

-- 
Sincerely,
Luís Ferreira @ lsferreira.net

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