[Relax][frontend] torch fx importer

python/tvm/relax/block_builder.py

@@ -601,7 +601,7 @@ def match_cast(self, value: Expr, struct_info: StructInfo) -> Var:
         """
         return _ffi_api.BlockBuilderEmitMatchCast(self, value, struct_info)  # type: ignore
 
-    def emit_output(self, output: Union[Expr, Tuple, List[Expr]]) -> None:
+    def emit_output(self, output: Union[Expr, Tuple, List[Expr]]) -> Var:
         """Emit output for the current dataflow block or function.
 
         Parameters

python/tvm/relax/frontend/__init__.py

@@ -0,0 +1,19 @@
+# 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.
+"""
+Frontends for constructing Relax programs, with the model importers
+"""

python/tvm/relax/frontend/torch/__init__.py

@@ -0,0 +1,20 @@
+# 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.
+"""
+PyTorch Frontends for constructing Relax programs, with the model importers
+"""
+from .fx_translator import from_fx