comaniac commented on a change in pull request #6052:
URL: https://github.com/apache/incubator-tvm/pull/6052#discussion_r454471458
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File path: src/relay/ir/dataflow_matcher.cc
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@@ -740,10 +740,10 @@ class PatternRewriter : protected MixedModeMutator {
groups_ = grouper.GroupMatches(callback_->pattern_, post);
gid_assignments_ = grouper.GetGIDAssignments();
memo_.clear();
- post = this->VisitExpr(post);
+ post = InferType(this->VisitExpr(post));
Review comment:
I agree to make the InferType optional, but assertion may not work, as
one pattern may rewrite a graph multiple times, so the rewritten nodes are
still not typed even the original nodes are well typed before running rewriter.
One solution is requiring users to manually type new nodes in the rewrite
callback, but it seems not trivial.
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