chore: import upstream snapshot with attribution

python/tvm/backend/trn/transform/__init__.py

@@ -0,0 +1,53 @@
+# 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.
+"""Trainium-specific TIRX transformations."""
+# pylint: disable=invalid-name
+
+from tvm_ffi import get_global_func
+
+import tvm
+from tvm import tirx
+
+_LAZY_TRANSFORMS = {
+    "TrnNaiveAllocator": ".naive_allocator",
+    "TrnPrivateBufferAlloc": ".private_buffer_alloc",
+}
+
+
+def LowerTrainiumLayout():
+    """Lower Trainium layouts to backend physical buffer shapes and indices."""
+    return get_global_func("tirx.backend.trn.transform.LowerTrainiumLayout")()
+
+
+def LowerTIRx():
+    """Lower TIRx tile primitive calls for the Trainium backend."""
+    return tvm.ir.transform.Sequential(
+        [tirx.transform.TilePrimitiveDispatch(), LowerTrainiumLayout()],
+        name="tirx.backend.trn.LowerTIRx",
+    )
+
+
+def __getattr__(name):
+    target = _LAZY_TRANSFORMS.get(name)
+    if target is None:
+        raise AttributeError(f"module {__name__!r} has no attribute {name!r}")
+    from importlib import import_module  # pylint: disable=import-outside-toplevel
+
+    return getattr(import_module(target, __name__), name)
+
+
+__all__ = ["LowerTIRx", "LowerTrainiumLayout", "TrnNaiveAllocator", "TrnPrivateBufferAlloc"]