pytorch

433b55bc - [quant] Add testing coverage for 4-bit embedding_bag sparse lookup op (#47328)

[quant] Add testing coverage for 4-bit embedding_bag sparse lookup op (#47328) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/47328 Extend tests to cover case for pruned weights with mapping table. Support for 8-bits sparse lookup to follow Test Plan: python test/test_quantization.py TestQuantizedEmbeddingOps Imported from OSS Reviewed By: qizzzh Differential Revision: D24719910 fbshipit-source-id: d31db6304f446104ee8c7b10b902accd2919a513