[LLVMdev] Using MC Parser data

[Chris Lattner]

On Nov 7, 2010, at 2:13 AM, Vladimir Kirillov wrote:

> Hi, llvmdev!
> 
> I have some thoughts about using the LLVM MC Parser's data to extract
> information about symbols like global data and 'functions' (labels with
> code following) intermixed with preprocessor directives (for example a
> C-like include file using function-like macros defined in the assembler
> source code).
> 
> I'm looking at the MCContext class which is likely to own all
> symbols in the file and all sections. However, I do not see whether
> the MC parser gathers any data about source locations of parsed sections
> and directives.
> 
> My question is whether it is possible to use MC to extract such data.
> I guess, the first thing might be tracking the source locations (like
> clang does), but what else can be a show-stopper?

Hi Vladimir,

We don't have an MC backend that builds an "assembly AST", but it would be straight-forward to do so.  Just define your own implementation of MCStreamer, and it will get called for every source level construct that the assembler runs into.

-Chris