comaniac commented on issue #4570: [relay] Relay annotation and partitioning for external compilers URL: https://github.com/apache/incubator-tvm/pull/4570#issuecomment-569204482 > Ideally whether to keep batch norm or not should be configurable. Actually for my use case, I want batch norm to be decomposed and its multiplication folded into previous conv, so that I don't have to worry about supporting batch norm on my end. But I expect others have a special op for handling fused Conv + BN + Relu. > > UPDATE: I realized this is already achieved by allowing each backend to have its own annotate_compiler registration. Yes you are right. This PR provides an interface (annotation) for specialized codegen to do subgraph pattern matching for fusion or similar optimization. However, we also realize that this may be painful for developers and it might be better to provide a more convenient pattern matching for widely used cases (e.g., Conv+BN+ReLU as you mentioned). Our follow-up plans to focus more on the graph partitioning algorithm, and this is one of the cases we want to cover.
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