I follow the instructions at here
https://tvm.apache.org/docs/dev/how_to/relay_bring_your_own_codegen.html#register-your-codegen
to add the backend codegen for `myop`, this is code in my `codegen.cc`
```
runtime::Module MyopCompiler(const ObjectRef& ref) {
MyopCodegen myop;
return myop.Crea
First, you shouldn't use `stackvm`. Use llvm for host codegen.
`unknown function call Op(tir.call_pure_extern)` means you have some
backend-specific intrinsic functions our codegen doesn't know about. You can
dump the intrinsic name.
---
[Visit
Topic](https://discuss.tvm.apache.org/t/byo
After implement my BYOC codegen, I call `relay.build` it returns me error like
this
```
File "../src/target/stackvm/codegen_stackvm.cc",
TVMError: unknown function call Op(tir.call_pure_extern)
```
Is there any reason and solution to this?
---
[Visit
Topic](https://discuss.tvm.apache.org
