[llvm] [WIP][AMDGPU][ASAN] Add amdgpu-asan-instrument-lds pass to instrument LDS (PR #83287)

[Matt Arsenault via llvm-commits]

https://github.com/arsenm commented:

Can we restructure this as a pure software lowering of LDS, and then allow the regular instrumentation to run on it?

https://github.com/llvm/llvm-project/pull/83287