llvm msil couple questions

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1

Hey there,

Searching via the web is not producing answers.... So I thought I
would ask the gods of llvm. :slight_smile:

I'd like to experiment with the llc in conjunction with msil.

but I am running into this error:
llc-mp-2.9 test.ll -march=msil
/opt/local/libexec/llvm-2.9/bin/llc: error: invalid target 'msil'.

the version string is:

llc-mp-2.9 --version
Low Level Virtual Machine (http://llvm.org/):
  llvm version 2.9
  Optimized build.
  Built May 31 2012 (21:15:36).
  Host: x86_64-apple-darwin11
  Host CPU: penryn

which was installed with:
sudo port install llvm-2.9

Searching on the web, I see that msil was available in 2.0..

Can anyone give any hints as to how to enable msil as a "Registered Target?"

Thanks a lot.

I'll start my own investigations on Monday.

Also, I have another question with regard to what I'll be
experimenting on. If anyone has any hints before I dive in, feel free
to chime in.

I am going to attempt to:
Compile C/C++ code into LLVM IR.
Compile the IR into MSIL.
Run the MSIL with a MicroDotNet VM + JIT plugin in the browser and
replace javascript.

I think I will need only minimal core libraries, so, perhaps
no/minimal dependencies on a glib.

My goals are to have near zero startup, 5% JIT overhead, no garbage
collection, sandboxing, running C/C++/anything I can throw at LLVM.

-tim

2

Ok, well I found the MSIL code, finally. I guess I can resurrect it.
I wonder how long *that* will take. :stuck_out_tongue:

Anyhow, just wondering, would it be possible to use LLVM to create a
sandboxed execution environment, running IR? And bypass using dotnet
as a sandboxing facility?

-tim

3

From: llvmdev-bounces@cs.uiuc.edu [mailto:llvmdev-bounces@cs.uiuc.edu]
On Behalf Of Tim Prepscius
Subject: [LLVMdev] llvm msil couple questions

I'd like to experiment with the llc in conjunction with msil.

Searching on the web, I see that msil was available in 2.0..

And was removed in 2.8 (over two years ago), since it was broken and not being maintained. Resurrecting it would appear to be extremely painful.

http://llvm.org/releases/2.8/docs/ReleaseNotes.html

- Chuck

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