pytorch

f012d0ea - [autograd.Function] enable the extended Function feature flag by default (#91441)

[autograd.Function] enable the extended Function feature flag by default (#91441) The autograd.Function <> functorch interaction is in a mostly completed state now. There are some minor action items remaining (https://github.com/pytorch/pytorch/issues/90224), but I want to enable the feature by default so that PyTorch CI / other parties / etc can begin testing to see if there is any impact on the original autograd.Function API (there shouldn't be). The longer-term plan for the feature flag is: - keep it around until at least the next release (so that people can turn off the feature if it breaks something in existing code) - delete the flag then (either before or after the release, I haven't decided yet) Test Plan: - new test - wait for CI Pull Request resolved: https://github.com/pytorch/pytorch/pull/91441 Approved by: https://github.com/albanD, https://github.com/soulitzer