Better Constant Propagation through Tuples (#22561)
Summary:
Replaces https://github.com/pytorch/pytorch/pull/21501 because ghimport had errors when i tried to import the stack that i couldn't figure out :'(
has the two commits that were previously accepted and the merge commit
Pull Request resolved: https://github.com/pytorch/pytorch/pull/22561
Differential Revision: D16135743
Pulled By: eellison
fbshipit-source-id: f0a98842ccb334c7ceab04d1437e09dc76be0eb1
