fp16 -> fp32 EmbeddingBag moved into CPU impl (#47076)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/47076
Pull Request resolved: https://github.com/pytorch/glow/pull/5038
Eliminate double casting in glow when submitting fp16 per sample weights
Test Plan:
buck test glow/glow/torch_glow/tests:embedding_bag_test
Due to dependency conflicts between glow and caffe2, the test has been reverted from this diff, and landed separately
Reviewed By: allwu
Differential Revision: D24421367
fbshipit-source-id: eb3615144a2cad3d593543428dfdec165ad301df
