chore: import upstream snapshot with attribution

python/tvm/ir/__init__.py

@@ -0,0 +1,40 @@
+# isort: skip_file
+# 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.
+# pylint: disable=unused-import
+"""Common data structures across all IR variants."""
+
+from . import instrument, transform
+from .attrs import Attrs, DictAttrs, make_node
+from .base import (
+    EnvFunc,
+    Node,
+    SourceName,
+    Span,
+    SequentialSpan,
+    assert_structural_equal,
+    load_json,
+    save_json,
+)
+from .expr import Call, Expr, GlobalVar, Range, is_prim_expr
+from .function import BaseFunc, CallingConv
+from .global_info import GlobalInfo, DummyGlobalInfo, VDevice
+from .module import IRModule
+from .op import Op, register_intrin_lowering, register_op_attr
+from .type import FuncType, PointerType, PrimType, TupleType, Type
+
+from tvm_ffi import Array, Map