pytorch

2bfa0184 - [BC-breaking] Use ScatterGatherKernel for scatter_reduce (CPU-only) (#74226)

[BC-breaking] Use ScatterGatherKernel for scatter_reduce (CPU-only) (#74226) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/74226 Update signature of `scatter_reduce_` to match `scatter_/scatter_add_` `Tensor.scatter_reduce_(int64 dim, Tensor index, Tensor src, str reduce)` - Add new reduction options in ScatterGatherKernel.cpp and update `scatter_reduce` to call into the cpu kernel for `scatter.reduce` - `scatter_reduce` now has the same shape constraints as `scatter_` and `scatter_add_` - Migrate `test/test_torch.py:test_scatter_reduce` to `test/test_scatter_gather_ops.py` Test Plan: Imported from OSS Reviewed By: ngimel Differential Revision: D35222842 Pulled By: mikaylagawarecki fbshipit-source-id: 84930add2ad30baf872c495251373313cb7428bd (cherry picked from commit 1b45139482e22eb0dc8b6aec2a7b25a4b58e31df)