[te] Add BitCast to the IR (#49184)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/49184
Adds BitCasting to NNC. This will enable fast approximation algorithms implemented directly in TensorExpressions
Test Plan: buck test mode/no-gpu //caffe2/test/cpp/tensorexpr:tensorexpr
Reviewed By: bertmaher
Differential Revision: D25466476
fbshipit-source-id: f063ab29ba7bab2dcce463e499f2d4a16bdc1f0e
