[llvm] [ORC] Add SimpleRemoteMemoryMapper (new MemoryMapper implementation). (PR #163707)

[Lang Hames via llvm-commits]

lhames wrote:

I suspect that the MLIR failure above is actually due to https://github.com/llvm/llvm-project/pull/163693. I'm looking into it now and will revert shortly if the fix isn't obvious.

https://github.com/llvm/llvm-project/pull/163707