[DirectX] Make DXILOpLowering responsible for cleaning up dead intrinsics#138199

bogner merged 1 commit intollvm:mainllvm/llvm-project:mainfrom

bogner:2025-05-01-linkage-and-dead-intrinsicsbogner/llvm-project:2025-05-01-linkage-and-dead-intrinsicsCopy head branch name to clipboard