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

[Matt Arsenault via cfe-commits]

arsenm wrote:

> 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.

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


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