Clearer Semantics and Naming for Customized Quantization Range Initialization in Observer (#42602)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/42602
In this diff, clearer semantics and namings for are introduced by splitting the original `init_dynamic_qrange` into 2 separate `Optional[int]` types `qmin` and `qmax` to avoid the confusion of the parameters with dynamic quantization.
The `qmin` and `qmax` parameters allow customers to specify their own customary quantization range and enables specific use cases for lower bit quantization.
Test Plan:
To assert the correctness and compatibility of the changes with existing observers, on a devvm, execute the following command to run the unit tests:
`buck test //caffe2/test:quantization -- observer`
Reviewed By: vkuzo, raghuramank100
Differential Revision: D22948334
fbshipit-source-id: 275bc8c9b5db4ba76fc2e79ed938376ea4f5a37c
