[llvm-dev] OpenCL toolset (for AMD GPU)

[Tom Stellard via llvm-dev]

On Tue, Sep 29, 2015 at 01:20:57PM +0000, Paweł Bylica via llvm-dev wrote:
> Hi LLVM,
> 
> I would like to compile OpenCL kernel for a specific AMD GPU target. Is it
> possible with the current clang/LLVM?
> 
> I started by using `clang -x cl` but it looks like at least some OpenCL
> specific headers are missing (e.g. uint2 is not recognized as a type).
> 
> Any links to documentation / tutorials very welcome. Thanks.
> 

Hi,

You need to include OpenCL library headers from libclc
(http://libclc.llvm.org/) to compile most OpenCL code.

Here is an example command:

clang -include /path/to/libclc/headers/clc.h -I /path/to/libclc/headers  -Dcl_clang_storage_class_specifiers -target amdgcn--amdhsa -mcpu=carrizo  $INPUT_FILE -o $OUTPUT_FILE

-Tom


> - Paweł

> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev