zxybazh opened a new pull request, #14127:
URL: https://github.com/apache/tvm/pull/14127

   This PR fixes the issue of loss of data type during Legalization. 
Previously, if we use a constant scalar in operators like `multiply`, it will 
automatically be converted to a python data type variable, which may lose its 
original data type. For example, `float16` may become python `float` and be 
interpreted as `float32` later.
   
   This is now fixed by avoiding scalar value conversion. The conversion could 
be added back once we have better support for scalar prim value.
   
   Co-authored by @sunggg and @vinx13.
   
   CC: @MasterJH5574 @tqchen 


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