Add aten mkldnn zero_ operator (#20573)
Summary:
### mkldnn backward ops list:
- [ ] \(https://github.com/pytorch/pytorch/pull/20567) Add aten mkldnn conv2d backward operator :yellow_heart:
- [ ] \(https://github.com/pytorch/pytorch/pull/20570) Add aten mkldnn backward ops: relu, linear and reshape :yellow_heart:
- [ ] \(https://github.com/pytorch/pytorch/pull/20571) Add aten mkldnn backward ops: max_pool2d, avg_pool2d and adaptive_avg_poo2d :yellow_heart:
- [ ] \(https://github.com/pytorch/pytorch/pull/20572) Add aten mkldnn batchnorm backward operator :yellow_heart:
- [ ] \(https://github.com/pytorch/pytorch/pull/20573) Add aten mkldnn zero_ operator:yellow_heart:
- [ ] \(https://github.com/pytorch/pytorch/pull/20575) Add mkldnn mul operator 💚
Pull Request resolved: https://github.com/pytorch/pytorch/pull/20573
Differential Revision: D15820477
Pulled By: bddppq
fbshipit-source-id: 35d95f5b4e013c8db1911f52148550a2e40a2e68
