[llvm] [AMDGPU] Split struct kernel arguments (PR #133786)

[Yaxun Liu via llvm-commits]

yxsamliu wrote:

> Another question is, does it affect explicit kernel launch via `hipLaunchKernelGGL` or even the lower level use via HSA?

No. The kernel signature does not change from the user pointer of view. It only needs HIP runtime change about laying out the kernel arg segment. It does not need HSA or firmware change.

https://github.com/llvm/llvm-project/pull/133786