t-vi edited a comment on pull request #6472:
URL: https://github.com/apache/incubator-tvm/pull/6472#issuecomment-692573786


   @yongwww what does "the slicing assignment doesn't take effect in jit" mean? 
The JITed function does update `a` because `select` will return a view that 
uses the same memory as a and then `copy_` writes to that. I tried with an `a` 
that is all zeros and `b` that contains random.
   
   Which thing in maskrcnn-benchmark produces the `copy_` and why is your 
translation correct? Maybe we can eliminate the `copy_` beforehand.


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