[LLVMdev] Problem with PTX assembly printing (NVPTX backend)

[Justin Holewinski]

On Mon, Feb 4, 2013 at 1:09 PM, <nkavv at physics.auth.gr> wrote:

> Hi Justin,
>
>
>  Has anyone had similar problems with the NVPTX backend? Shouldn't this
>>> code be linked to the AsmPrinter library for NVPTX (already)?
>>>
>>
>> What do you mean by "doesn't work"?  The AsmPrinter library really houses
>> the MCInst printer, which isn't implemented for NVPTX yet.  The older
>> assembly printer works just fine.  This is transparent to users.  The
>> NVPTX
>> target can be used just like MIPS and X86 with llc (and library users).
>>
>> Is llc saying nvptx is an invalid target?  If so, you probably built LLVM
>> without NVPTX.
>>
>
> I've used -enable-targets=all, and all libLLVMNVPTX*.a libs were produced.
> However, the AsmPrinter one looks dummy.
>
> Further, nvptx appears as a registered target when running llc --version.
>
> llc doesn't complain, but just "runs" forever with apparently no output


Can you post the llc command line you're using?  Can you post an LLVM IR
file that causes this behavior?


>
>
>  BTW I've built LLVM with mingw (strange mixture of gcc-3.4.5 and
>>> g++-4.6.1). Native compilation, MIPS backend and other things that i've
>>> tested, all work properly.
>>>
>>
>> Perhaps this "strange mixture" is causing some symbol errors somewhere.
>> Can you post the exact sequence of steps you used to build LLVM, along
>> with
>> the llc command-line that fails for you?
>>
>
> My configuration options were:
>
> --prefix=/my/local/path/or/so --enable-shared --enable-targets=all
> --enable-optimized --disable-libffi --disable-debug-runtime
> --disable-assertions --disable-expensive-checks
>
> Following configuration i did the typical make and make install (to a
> selected path by --prefix.
>
>
> Best regards
> Nikolaos Kavvadias
>
>
>
>>
>>
>>> Any help is appreciated.
>>>
>>> Best regards,
>>> Nikolaos Kavvadias
>>>
>>>
>>>
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>>> >
>>>
>>>
>>
>>
>> --
>>
>> Thanks,
>>
>> Justin Holewinski
>>
>>
>
>
>


-- 

Thanks,

Justin Holewinski
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