[CppCodeGen] Enable conservative GC

[jkotas]

Remove artificially high GC budget for CppCodeGen and make conservative GC stack scanning work.

[imkow]

Can Boehm GC be an option?

[jkotas]

Plugging in a Boehm GC is likely to be more work than enabling the conservative GC scanning for the GC that we have.

[imkow]

@jkotas Great that you already have a GC that can enable conservative GC.

[jfrancisco-neto]

So ... any update ?

[forestbat]

So ... any update ?

I think maintainers of corert should update their readme and issues，otherwise we don't know how the project going on，however，what we all know is，corert is still in ALPHA.
When will it become release？Maybe three years or longer.

[MichalStrehovsky]

The CppCodegen code generation backend of CoreRT is currently in a community supported mode. The reasons for that are explained here. We (Microsoft) do provide guidance, code reviews, and accept pull requests for it because we recognize the value of it for the .NET ecosystem, but we're not actively paid to work on CppCodegen for reasons explained in the linked comment.

CppCodegen is making progress, but we don't have timelines or shipping dates. E.g. in January, a Samsung employee contributed reflection support for CppCodegen (#6700).

The RyuJIT code generation backend (that generates native code for supported processors, as opposed to portable C++) in CoreRT is much more complete at this point.