yaxunl added a comment.

In D53153#1315039 <https://reviews.llvm.org/D53153#1315039>, @scott.linder 
wrote:

> In D53153#1314798 <https://reviews.llvm.org/D53153#1314798>, @rjmccall wrote:
>
> > You still have the same linkage model for those other languages, right?  
> > Ultimately there's something like a kernel function that has to be declared 
> > specially and which becomes the only public interface of the code?
>
>
> I don't think this is true for all languages targeting AMDGPU. For example, 
> HIP has APIs like `hipMemcpyToSymbol` which accept a string identifying a 
> symbol for a variable in global/constant address space. @yaxunl is my 
> understanding about the HIP runtime requiring dynamic symbols for global 
> variables correct here?


Right. There is also hipGetSymbolAddress which returns address of a global 
variable in device memory given the name of the variable. Therefore we cannot 
hide the global variables.


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https://reviews.llvm.org/D53153



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