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

[Krzysztof Drewniak via llvm-commits]

krzysz00 wrote:

(You'll note that in https://github.com/llvm/llvm-project/pull/137425/files#diff-f904f8cd236733212015dd1988ffefcc9f79f7484ee46e3e3833d2d75fa69542R2243 , this intrinsic gets lowered to `raw_ptr_buffer_load_lds` by "pulling apart" the ptr addrspace(7) - that `raw_ptr_buffer_load_lds` intrinsic is the direct equivalent to the v4i32 system)

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