llvm-project

e3d7bf29 - [MLIR][LLVM] add metadata attrs and `llvm.named_metadata` op (#186703)

[MLIR][LLVM] add metadata attrs and `llvm.named_metadata` op (#186703) This PR adds some LLVM metadata attributes and an `llvm.named_metadata` container op (similar to `llvm.module_flags`) for those attributes. Summary: - Add MLIR attributes modeling LLVM IR metadata: `#llvm.md_string`, `#llvm.md_const`, `#llvm.md_func`, and `#llvm.md_node`; - Add `llvm.named_metadata` container op for module-level named metadata nodes; - Add MLIR-to-LLVM-IR translation for the new attributes and op; - Add C API functions (`mlirLLVMMDStringAttrGet`, `mlirLLVMMDNodeAttrGet`, etc.); - Add Python bindings (`llvm.MDStringAttr`, `llvm.MDConstantAttr`, `llvm.MDFuncAttr`, `llvm.MDNodeAttr`, `llvm.FunctionType`).