yongfeng-nv commented on a change in pull request #4931: Tighten split's extent
URL: https://github.com/apache/incubator-tvm/pull/4931#discussion_r385793595
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File path: src/te/schedule/message_passing.cc
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@@ -51,6 +51,45 @@ void Update(std::unordered_map<IterVar, Range>* p_state,
}
}
+/*!
+ * \param Upward propagating whether an IterVar derives at least one leaf
IterVar that binds to
+ * a thread.
+ *
+ * \param stage The stage to operate on.
+ * \param p_state The propagation result of each IterVar.
+ */
+void PassUpThreadBinding(const Stage& stage, std::unordered_map<IterVar,
bool>* p_state) {
+ auto bound_to_thread = [stage](const IterVar& iv) {
+ bool bound = false;
+ auto it = stage->iter_var_attrs.find(iv);
+ if (it != stage->iter_var_attrs.end()) {
+ bound = (*it).second->bind_thread.defined();
+ }
+ return bound;
+ };
+
+ auto& state = *p_state;
+ // Fill p_state with leaf itervars
+ for (IterVar iv : stage->leaf_iter_vars) {
Review comment:
Made changes.
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