PTX->LLVM IR

[shehanaz mahammed]

I am a newbie and I have successfully installed ocelot in ubuntu 12.04 .Is there any way to get the LLLVM IR using ocelot?

[Jin Wang]

You may want to use the PTXToLLVMTranslator transformation pass. The following source code might be useful:

/your/path/to/gpuocelot/ocelot/ocelot/translator/implementation/PTXToLLVMTranslator.cpp

/your/path/to/gpuocelot/ocelot/ocelot/translator/interface/PTXToLLVMTranslator.h

/your/path/to/gpuocelot/ocelot/ocelot/translator/test/TestPTXToLLVMTranslator.cpp

/your/path/to/gpuocelot/ocelot/ocelot/translator/test/TestPTXToLLVMTranslator.h

On Wed, Sep 9, 2015 at 2:25 AM shehanaz mahammed <shehan...@gmail.com> wrote:

I am a newbie and I have successfully installed ocelot in ubuntu 12.04 .Is there any way to get the LLLVM IR using ocelot?

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[shehanaz mahammed]

How can i use the PTX to LLVM IR translator provided in GpuOcelot? Should i be running the PTXToLLVMTranslator.cpp ?

[Jin Wang]

After building ocelot with basic test level, i.e. "./build.py -t basic", you can run ".release_build/ocelot/TestPTXToLLVMTranslator" with appropriate parameters (query by "-h") to output LLVM IR. This test is generated from /your/path/to/gpuocelot/ocelot/ocelot/translator/test/TestPTXToLLVMTranslator.cpp.

On Fri, Sep 11, 2015 at 12:37 AM shehanaz mahammed <shehan...@gmail.com> wrote:

How can i use the PTX to LLVM IR translator provided in GpuOcelot? Should i be running the PTXToLLVMTranslator.cpp ?

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[shehanaz mahammed]

Thanks for your reply

[Jin Wang]

Executing "TestPTXToLLVMTranslator -i /your/path/to/the/dir/that/contains/ptx -o" will generate corresponding llvm ir for all the PTX in the input dir in the name of "ptxfilename.kernelname.ll". These ".ll" files are also under your input dir. Please check. If you don't see them, post your ptx file and I will take a look.

On Mon, Sep 14, 2015 at 2:50 AM shehanaz mahammed <shehan...@gmail.com> wrote:

I could run the .release_build/ocelot/TestPTXToLLVMTranslator successfully .The option given in help for outputting the internal represntation of parsed file is -o. My ptx files passed the test but i am unable to get the intermediate representation with -o as parameter.

On Wednesday, September 9, 2015 at 11:55:16 AM UTC+5:30, shehanaz mahammed wrote:

I am a newbie and I have successfully installed ocelot in ubuntu 12.04 .Is there any way to get the LLLVM IR using ocelot?

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[Jin Wang]

Executing "TestPTXToLLVMTranslator -i /your/path/to/the/dir/that/contains/ptx -o" will generate corresponding llvm ir for all the PTX in the input dir in the name of "ptxfilename.kernelname.ll". These ".ll" files are also under your input dir. Please check. If you don't see them, post your ptx file and I will take a look.

[shehanaz mahammed]

Thank u for ur reply, same way I had executed but  i compiled cuda kernels with arch=sm_10 and was getting corresponding ptx code with arch=sm_10. When I complied cuda kernels with arch=sm_20 and then executed the ptx code using the command u mentioned, I got the correspondind LLVM IR.
Thank you.

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