[GitHub] [tvm] mbs-octoml commented on a diff in pull request #11926: [Relay] CaptureIndexInSpans debugging pass

[GitBox <gi...@apache.org>]

mbs-octoml commented on code in PR #11926:
URL: https://github.com/apache/tvm/pull/11926#discussion_r908795564


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src/relay/transforms/capture_index_in_spans.cc:
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@@ -0,0 +1,133 @@
+/*
+ * 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.
+ */
+
+/*!
+ * \file tvm/relay/transform/capture_index_in_spans.cc
+ * \brief A pass to set spans to capture the post-dfs index of every node.
+ */
+
+#include <tvm/relay/expr_functor.h>
+#include <tvm/relay/transform.h>
+
+#include "../ir/indexed_graph.h"
+
+namespace tvm {
+namespace relay {
+namespace transform {
+
+namespace {
+
+/*! \brief Update all the spans to capture their post-dfs index. */
+class CaptureIndexInSpansRewriter : public ExprRewriter {
+ public:
+  explicit CaptureIndexInSpansRewriter(const IndexedGraph<Expr>* indexed_graph)
+      : source_name_(SourceName::Get("index")), indexed_graph_(indexed_graph) {}

Review Comment:
   Switched to PostDfsIndex, which matches the c++ alias I've been using.



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