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

[Krzysztof Drewniak via cfe-commits]

krzysz00 wrote:

@arsenm You're right that it might be better to emit the offset, but all the existing intrinsics that I'm abstracting over _do_ have such a field.

If you want to add new intrinsics that don't have the offset and that pattern-match instead, I'd be more than happy to review that - or if we want to break back-compat by getting rid of the offset.

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