pytorch

0aa70039 - Delete redundant device/dtype in TensorIterator add_input/add_output (#39798)

Delete redundant device/dtype in TensorIterator add_input/add_output (#39798) Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/39798 add_input's device/dtype are 100% redundant, as compute_types will always (internal) assert that this dtype matches the expected dtype. add_output's device/dtype is redundant UNLESS you have an undefined tensor (in which case it seems to be an indication what the output type should be). The one add_output case I killed can never be exercised, see: ``` import torch x = torch.randn(3, 4) mask = x.ge(0.5) torch.masked_select(x.cuda(), mask.cuda(), out=torch.zeros((0), dtype=torch.int64, device='cuda')) ``` Signed-off-by: Edward Z. Yang <ezyang@fb.com> Test Plan: Imported from OSS Differential Revision: D21981742 Pulled By: ezyang fbshipit-source-id: a042d1b9fce0ad58b833856ffe32001787551e59