jcf94 commented on a change in pull request #6107:
URL: https://github.com/apache/incubator-tvm/pull/6107#discussion_r459821753
##########
File path: src/auto_scheduler/transform_step.cc
##########
@@ -923,5 +958,272 @@ String
ComputeRootStepNode::PrintAsPythonAPI(Array<te::Stage>* stages,
return ss.str();
}
+/********** Primitives adding new stages **********/
+
+/*!
+ * \brief Common part for steps that add new stages(e.g. CacheReadStep,
CacheWriteStep,
+ * RfactorStep). This will filter out all steps that can change the stages of
ComputeDAG.
+ */
+Array<Step> GetStageModifiableSteps(Step current_step, const Array<Step>&
transform_steps) {
+ Array<Step> ret_steps;
+ for (const Step& step : transform_steps) {
+ if (step->IsInstance<CacheWriteStepNode>() ||
step->IsInstance<CacheReadStepNode>()) {
+ ret_steps.push_back(step);
+ }
+ // TODO(jcf94): add rfactor support
+ if (step.same_as(current_step)) {
Review comment:
Updated.
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