Make AutoMapper FEC branch to pass all the tests

[dadhi]

The branch: https://github.com/AutoMapper/AutoMapper/tree/FastExpressionCompiler

[dadhi]

Baseline:

[jogibear9988]

[jogibear9988]

The exception happens outside of running custom IL.
Already generating crashes...

Also "dynamic" is used in some tests, don't think it is supported already?

[dadhi]

Hi, what is the version did you check?

Dynamic is not supported (or rather is not tested)

[jogibear9988]

its the latest

[dadhi]

Ok. Thanks for checking.

I have started work to fix AM some time ago - here is the updated branch in my fork https://github.com/dadhi/AutoMapper/tree/FECv3

The main problem is that AM expressions are big and complex, and composed in a multiple places - so I wanted to expect them with lately added LightExpression.ToCodeString. So I've started to switch AM from the System Expression to FEC.LightExpression and immediately stuck on the missing ExpressionVisitor support. So I've copied System ExpressionVisitor and started the conversion - it is currently in progress - I've pushed it as-is (does not compile yet) into the branch.

I am not sure when I can return back to this code because I have other things to finish.

[dadhi]

v3.1 update:

[dadhi]

Done, but we should add some kind of regression testing for the new versions on FEC and AM