Quantized Conv2d operator (#20772)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/20772
Copy of D15178352
A conflicting commit landed at the same time as D15178352 that removed registering kernels using IntArrayRef, Hence, D15178352 was revered. Using std::vector instead.
Reviewed By: zafartahirov
Differential Revision: D15437237
fbshipit-source-id: cd2f1caebcc720352b48ce25d716cb1ca49a5197
