manupa-arm commented on a change in pull request #9331:
URL: https://github.com/apache/tvm/pull/9331#discussion_r743818992



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File path: python/tvm/relay/op/contrib/cmsisnn.py
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@@ -52,37 +54,85 @@ def partition_for_cmsisnn(mod, params=None, **opts):
             transform.InferType(),
             transform.MergeComposite(pattern_table()),
             transform.AnnotateTarget("cmsisnn"),
-            transform.MergeCompilerRegions(),

Review comment:
       The way the current BYOC works, this will create a source per operator 
and also additional set of indirection will be there for each call.
   
   i.e.
   main_func <--> ext_func <--> cmsis_func
   main_func <--> ext_func <--> cmsis_func
   main_func <--> ext_func <--> cmsis_func
   
   vs
   
   main_func <--> ext_func <--> cmsis_func1, cmsis_func2, cmsis_func3




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