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

[Krzysztof Drewniak via cfe-commits]

krzysz00 wrote:

Well, if y'all want to go add a pattern for this and eventually deprecate the intrinsics I'm all ears, but we're trying to use these instructions now 

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