pytorch

e12cc227 - dbr quant: make QTensorInfo a dataclass and add orig_dtype (#71245)

dbr quant: make QTensorInfo a dataclass and add orig_dtype (#71245) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/71245 This is a refactor to make a future PR of making observer insertion be a separate pass easier. 1. adds orig_dtype, so we always record what was seen while tracing 2. switches from namedtuple to dataclass, so we can have more explicit types Test Plan: CI and mypy Reviewed By: HDCharles Differential Revision: D33558281 Pulled By: vkuzo fbshipit-source-id: b9f87e25a3538fee145f020916a31699046a9c11 (cherry picked from commit 3c8db243605220e990e3c7280ed475d6e90c32fb)