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

[Jon Chesterfield via llvm-commits]

JonChesterfield wrote:

I don't know what "special" refers to here. As far as I'm aware there are no lds variables that are treated inherently differently to others, except for the dynamic case which has the weird aliasing behaviour.

I would suggest not moving asan specific work into the main lds lowering pass, on the grounds that this seems error prone and I'd rather the asan complexity not invade the rest of the code paths.

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