1. Yes, because the codegen is now a part of TVM shared library. However, cmake with ccache should save your time for unchanged files. 2. As the document indicates, you should apply a series of passes from AnnotateTarget to PartitionGraph. After that, you could print the IR to see if there's any Relay function with attribute `kCopiler="your-codegen-name"`. If so, then your codegen will be used when calling `relay.build`. 3. Yes. 4. As you already answered. 5. I don't understand this question, but a Relay program must have an output, and you cannot print message inside the Relay function. The error you got is a misuse. You should still use `llvm` as the target, which is the target for "non-offloaded" parts of the model. Again, as long as your IR includes function with `kCompiler=your-codegen-name`, then it will be offloaded to your codegen whatever the target you specify.
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