llvm dev - Dec 2009 - [LLVMdev] Compilation problem with JIT/Interpreter

Hi,

I'm yet working on the LLVM ExecutionEngine portability (2.6 release
version) and I get two different problems depending on the platform. The
first problem concerns compilation on MacOs X (10.5.5) with an X86
processor, when trying to compile my own project containing the
ExecutionEngine class and the linker class. I get links problem
with "_ffi_type_sint16", "_ffi_type_sint32",
"ffiInvoke" etc.. (The link
problems are enclosed to this message) with Unix MakeFile or XCode project
generated by CMake (llvm compilation options are get with llvm-config inside
CMake). This project has been successfully tested on Linux and windows
platforms with the same computer. So my first question is :
Is there additionnals information to provide to the linker when compiling
llvm on mac os x?

The second question concerns Yellow Dog Distribution(6.2) on CellSPU
processor. Does lli support JIT compilation on CELL? For the moment, it
seems to only work with the interpreter (-force-interpreter option).

Many thanks
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Hello
> Is there additionnals information to provide to the linker when
> compiling llvm on mac os x?
Do you have libffi installed somehere?
> 
> 
> The second question concerns Yellow Dog Distribution(6.2) on CellSPU
> processor. Does lli support JIT compilation on CELL?
No. As far as I can see, there is no JIT for SPU.


-- 
With best regards, Anton Korobeynikov.

Faculty of Mathematics & Mechanics, Saint Petersburg State University.

Hello
> Is there additionnals information to provide to the linker when
> compiling llvm on mac os x?
> > Do you have libffi installed somehere?
Yes i do, 3.0.8 version taken from the official site, but i did'nt provide
any information on it into my project's Makefile as the CMake of LLVM do not
provide any information about libffi too. Do I have to insert a libtool
command?
>
>
> The second question concerns Yellow Dog Distribution(6.2) on CellSPU
> processor. Does lli support JIT compilation on CELL?
> > No. As far as I can see, there is no JIT for SPU.
*
*
*
*
2009/12/8 Anton Korobeynikov <anton at korobeynikov.info>
> Hello
>
> > Is there additionnals information to provide to the linker when
> > compiling llvm on mac os x?
> Do you have libffi installed somehere?
> >
> >
> > The second question concerns Yellow Dog Distribution(6.2) on CellSPU
> > processor. Does lli support JIT compilation on CELL?
> No. As far as I can see, there is no JIT for SPU.
>
>
> --
> With best regards, Anton Korobeynikov.
>
> Faculty of Mathematics & Mechanics, Saint Petersburg State University.
>
>
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Jerome:

No, there are no plans to JIT to SPU. That's considerably more complicated
-- you'd have to figure out when to JIT to the SPU and live with all of the
constraints that the SPU imposes (data reformatting, r/w DMA, ensure your
code lives in 256K unless you can manage to interface with the virtual
I-cache work.)

Basically, it's not trivial and it doesn't quite fit into the current
LLVM
JIT model.

Moreover, the Cell SPU backend is still incomplete. Given the level of my
(day job) management responsibilities, I have less and less time to hack.
I'm becoming less enthusiastic about continued development since IBM has all
but declared the Cell dead (no one from the Cell team at Supercomputing, so,
read between the lines.) A UCLA comp sci group might pick up and finish the
backend for their research.


-scooter

On Mon, Dec 7, 2009 at 4:04 PM, Anton Korobeynikov
<anton at korobeynikov.info>wrote:
> Hello
>
> > Is there additionnals information to provide to the linker when
> > compiling llvm on mac os x?
> Do you have libffi installed somehere?
> >
> >
> > The second question concerns Yellow Dog Distribution(6.2) on CellSPU
> > processor. Does lli support JIT compilation on CELL?
> No. As far as I can see, there is no JIT for SPU.
>
>
> --
> With best regards, Anton Korobeynikov.
>
> Faculty of Mathematics & Mechanics, Saint Petersburg State University.
>
> _______________________________________________
> LLVM Developers mailing list
> LLVMdev at cs.uiuc.edu         http://llvm.cs.uiuc.edu
> http://lists.cs.uiuc.edu/mailman/listinfo/llvmdev
>
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