zackcquic commented on a change in pull request #8220:
URL: https://github.com/apache/tvm/pull/8220#discussion_r648118036
##########
File path: docs/api/python/ir.rst
##########
@@ -23,6 +23,14 @@ tvm.ir
:autosummary:
+tvm.ir.instrument
Review comment:
Use tvm.instrument
##########
File path: docs/dev/pass_infra.rst
##########
@@ -526,6 +579,51 @@ decorators and then invoke it. For more examples about how
to customize your own
optimization pipeline and debug Relay and tir passes, please refer to the
`use pass infra`_ tutorial.
+Pass Instrument
+^^^^^^^^^^^^^^^
+
+A customizable framework to instrument passes is provided. ``PassInstrument``
classes can be registered while constructing ``PassContext``.
+
+.. code:: python
+
+ @tvm._ffi.register_object("transform.PassContext")
+ class PassContext(tvm.runtime.Object):
+ def __init__(
+ self,
+ opt_level=2,
+ required_pass=None,
+ disabled_pass=None,
+ instruments=None,
+ config=None,
+ ):
+ # ...
+
+One can implement a ``PassInstrument`` by ``pass_instrument``
decorator(`python/tvm/ir/instrument.py`_) with a class implementing following
methods:
+
+- ``enter_pass_ctx``
+
+ * This callback is run at the moement of entering ``PassContext``.
+
+- ``exit_pass_ctx``
+
+ * This callback is run at the moement of exiting ``PassContext``.
+
+- ``should_run``
+
+ * This callback is run before a pass is executed, returning a boolean
indicating if the pass should be run.
+ * If a pass is listed as required, this callback will not be executed for
that pass.
Review comment:
This callback will not be executed for that pass. -> should_run will not
have effect and not be executed.
##########
File path: docs/dev/pass_infra.rst
##########
@@ -389,6 +397,51 @@ To allow other C++ modules to apply this pass, we declare
a free function in
TVM_DLL Pass FoldConstant();
+Pass Instrument
+~~~~~~~~~~~~~~~
+
+To instrument passes, four methods are introduced to ``PassContext``.
+
+.. code:: c++
+
+ TVM_DLL void InstrumentEnterPassContext();
+ TVM_DLL void InstrumentExitPassContext();
+ TVM_DLL bool InstrumentBeforePass(const IRModule& mod, const PassInfo&
info) const;
+ TVM_DLL void InstrumentAfterPass(const IRModule& mod, const PassInfo&
info) const;
+
+The first two methods are called respectively in entering/exiting context
scope. The latter two are called while passes is being
applied(`src/ir/transform.cc`_).
+
+Note that ``InstrumentBeforePass()`` return a boolean indicating this pass
should
+be run or not.
+
+``PassInstrument`` provides callbacks run by these methods. Multiple
+``PassInstrument`` instances can be registed into a single ``PassContext``.
+They are called sequentially in the order of ``instruments`` member.
+
Review comment:
Add exception situations.
##########
File path: tutorials/dev/use_pass_instrument.py
##########
@@ -0,0 +1,206 @@
+# 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=line-too-long
+"""
+.. _tutorial-use-pass-instrument:
+
+How to Use TVM Pass Instrument
+==============================
+**Author**: `Chi-Wei Wang <https://github.com/chiwwang>`_
+
+As more and more passes are implemented, it becomes interesting to instrument
+passes execution, analyze per-pass effects and observe various events.
+We have extended :py:class:`tvm.transform.PassContext` to accept a list of
+instrument classes. Also a decorator
:py:func:`tvm.ir.instrument.pass_instrument` is provided to easily implement
instrument classes.
+
+This tutorial demostrates how developers can use ``PassContext`` to instrument
+passes. For more details, please refer to the :ref:`pass-infra`
Review comment:
How about remove "For more details, ... " ?
##########
File path: tutorials/dev/use_pass_instrument.py
##########
@@ -0,0 +1,206 @@
+# 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=line-too-long
+"""
+.. _tutorial-use-pass-instrument:
+
+How to Use TVM Pass Instrument
+==============================
+**Author**: `Chi-Wei Wang <https://github.com/chiwwang>`_
+
+As more and more passes are implemented, it becomes interesting to instrument
+passes execution, analyze per-pass effects and observe various events.
+We have extended :py:class:`tvm.transform.PassContext` to accept a list of
+instrument classes. Also a decorator
:py:func:`tvm.ir.instrument.pass_instrument` is provided to easily implement
instrument classes.
Review comment:
Pass instrument framework extended ... instrument instances, Also a
decorator :py:func:`tvm.instrument.pass_instrument` ... instrument instances.
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