[primTorch] reshape and view (#77220)
This PR makes the following changes...
Prims
- adds as_strided
- fixes errors in flatten meta
Testing
- enables view consistency checking (which can be opted out of, see issues below)
- adds reference inputs for view, reshape, and flatten
- adds error inputs for reshape
Refs
- adds as_strided, reshape, and view
- fixes an error in the flatten ref where it was not returning self on no-op
- fixes a bug in transpose where it was not retuning a view when the transposed tensor has 1 or fewer dims
Issues
- https://github.com/pytorch/pytorch/issues/77218
- https://github.com/pytorch/pytorch/issues/77216
Pull Request resolved: https://github.com/pytorch/pytorch/pull/77220
Approved by: https://github.com/ngimel
