[llvm] [AMDGPU] Lower mem intrinsics on LDS pointers in AMDGPUSwLowerLDS (PR #202552)

[Arseniy Obolenskiy via llvm-commits]

aobolensk wrote:

> What does this pass do on arbitrary calls, just break?

No, unknown calls are rather ignored. As for `reportFatalUsageError`, it is supposed to blow the pipeline up when AnyMemIntrinsic that is some new unhandled memory intrinsic kind

https://github.com/llvm/llvm-project/pull/202552