[cfe-dev] openclc to llvm

Peter Collingbourne peter at pcc.me.uk
Fri Apr 27 04:36:50 PDT 2012

On Fri, Apr 27, 2012 at 11:37:13AM +0800, Lei Mou wrote:
> Hi Ankur,
> Yes, you need the support of libclc in order to successfully compile OpenCL
> kernels. It is available at http://libclc.llvm.org/. After building libclc,
> you can use the script "compile-test.sh" to compile OpenCL kernels. For me,
> the compile-test.sh has a little problem (due to the option -Xclang
> ptx32--nvidiacl/lib/builtins.bc), so I just removed the option, and the

What problem?  Did you follow the instructions in README.TXT to build
the builtins.bc file?

> resulting script looks like this:
> clang -ccc-host-triple ptx32--nvidiacl -Iptx-nvidiacl/include
> -Igeneric/include -include clc/clc.h -target-feature -Xclang +ptx23 -Xclang
> -target-feature -Xclang +sm20 -Dcl_clang_storage_class_specifiers -S
> -emit-llvm "$@"
> Using the modified script, OpenCL kernels can be successfully compiled into
> PTX codes.

But most of the builtin functions won't work.


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