pytorch

4b105349 - [vmap] Prepend "legacy" to files for old vmap implementation (#90324)

[vmap] Prepend "legacy" to files for old vmap implementation (#90324) We have an older torch.vmap implementation. It is no longer supported. It still needs to exist somewhere for the sake of BC with torch.autograd.functional. This PR makes it clear what files are meant for implementing the old vmap implementation. I've seen a couple of PRs recently adding support for the old vmap implementation, so this will lessen the confusion. Test Plan: - CI Pull Request resolved: https://github.com/pytorch/pytorch/pull/90324 Approved by: https://github.com/samdow