[llvm] [AMDGPU][ASAN] Handle special GVs lowering in amdgpu-sw-lower-lds (PR #161827)

[Gang Chen via llvm-commits]

cmc-rep wrote:

> That just raises more questions. Named barriers aren't lds globals, why would rocm want to to represent them as such?
> 
> Matt pointed out that the patch doesn't mean much without reference to the internal discussion, which I don't have access to. One of the drawbacks of split development really.

On platform without hardware support, we can emulate named-barrier using LDS atomics. 

https://github.com/llvm/llvm-project/pull/161827