Reduce number of stack manipulation instructions in interpreter. (#21240)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/21240
ghimport-source-id: 5e9cbe8b3df3ac721135d2f652a420ae0b14ac55
Reviewed By: jamesr66a
Differential Revision: D15590900
Pulled By: zdevito
fbshipit-source-id: 98829979feba23685f0ba98ba3cb840157f7259a
