Replace uint8 with int8 in Linear and LSTM quantization path (#23347)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/23347
This diff replaces uint8 with int8 to match with the underlying kernel implementation. When we do int8 quantization, we are computing with uint8 (input activation) * int8 (weight) -> uint8 (output activation). The weight is quantized into int8.
Reviewed By: jianyuh
Differential Revision: D16469435
fbshipit-source-id: a697655b0e97833fc601e5980970aec4dba53c39
