pytorch

09dfaa03 - add operation list for AutocastCPU (#63534)

add operation list for AutocastCPU (#63534) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/63534 In this PR: * We have changed the default dtype of `AutocastCPU` from `float16` to `bfloat16` as discussed here `https://github.com/pytorch/pytorch/pull/61002` * We also update the operation list which needs casting to `lower_precision_fp` or `float32`. Test Plan: Imported from OSS Reviewed By: zou3519 Differential Revision: D30644914 Pulled By: ezyang fbshipit-source-id: 8b93485ba452b3759611e3f0ac88e920fe495ac1