chore: import upstream snapshot with attribution

python/tvm/tirx/operator/__init__.py

@@ -0,0 +1,41 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# `tile_primitive` defines Python Op classes (`Zero(UnaryOp)`, etc.) whose
+# class bodies call `Op.get("tirx.<name>")` at class-definition time, which
+# requires the compiler-side FFI. Load it lazily so that
+# `tvm.tirx.operator.intrinsics._common` (pure data) and other runtime-safe
+# submodules can be imported under `TVM_USE_RUNTIME_LIB=1`, matching apache's
+# discipline for `tvm.tirx`.
+def __getattr__(name):
+    # `from . import tile_primitive` here would recurse: Python's import
+    # machinery does `getattr(self, 'tile_primitive')` to see if the submodule
+    # is already loaded, which goes back through this __getattr__. Use
+    # importlib.import_module to bypass attribute lookup; it sets the attribute
+    # on the parent package as a side effect, so subsequent lookups go through
+    # the normal attribute path, not this __getattr__.
+    import sys  # pylint: disable=import-outside-toplevel
+    from importlib import import_module  # pylint: disable=import-outside-toplevel
+
+    tp_qualname = f"{__name__}.tile_primitive"
+    tile_primitive = sys.modules.get(tp_qualname) or import_module(tp_qualname)
+    if hasattr(tile_primitive, name):
+        return getattr(tile_primitive, name)
+    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
+
+
+__all__ = ["get_tirx_op"]