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

[Leslie Zhai via llvm-dev]

Sorry for my wrong post!

Dear Tom,

hsa-runtime was not available? https://github.com/tstellarAMD/hsa-runtime/

在 2017年06月26日 16:20, Leslie Zhai 写道:
> Hi Tom,
>
> Thanks for your kind response!
>
> > 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
>
> When I tried to build cos.cl testcase 
> https://github.com/llvm-mirror/libclc/blob/master/test/cos.cl
>
> $ clang -include clc/clc.h -Dcl_clang_storage_class_specifiers -target 
> amdgcn--amdhsa -mcpu=carrizo cos.cl -o cos.out
>
> cos.cl:1:27: error: pointer arguments to kernel functions must reside 
> in '__global', '__constant' or
>       '__local' address space
> __kernel void foo(float4 *f) {
>                           ^
> 1 error generated.
>
> Then I added __local before float4 *f like this:
>
> Index: cos.cl
> ===================================================================
> --- cos.cl      (revision 306265)
> +++ cos.cl      (working copy)
> @@ -1,3 +1,3 @@
> -__kernel void foo(float4 *f) {
> +__kernel void foo(__local float4 *f) {
>    *f = cos(*f);
>  }
>
> because [OpenCL] Improve address space diagnostics 
> https://reviews.llvm.org/D27671
>
> then rebuilt again,
>
> cos.cl:1:15: error: unsupported call to function _Z3cosDv4_f
> __kernel void foo(__local float4 *f) {
>               ^
> 1 error generated.
>
> why not found *cos* function? please give me some hint, thanks a lot!
>

-- 
Regards,
Leslie Zhai https://reviews.llvm.org/p/xiangzhai/