[clang] [llvm] [mlir] [AMDGPU] Add a new amdgcn.load.to.lds intrinsic (PR #137425)

[Krzysztof Drewniak via cfe-commits]

krzysz00 wrote:

> I don't think we need to worry about compatibility with an intrinsic that's been committed for a day

`global.load.lds` and `buffer[.ptr].load.lds` have been around for quite a while though, and this is just an abstraction over them

https://github.com/llvm/llvm-project/pull/137425