[TensorExpr] Add classes for memory management in tensor expressions. (#33216)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/33216
All tensor expressions belong to a kernel arena and are freed when the
arena is destroyed. Until it is destroyed, all expressions stay valid.
Test Plan: Imported from OSS
Differential Revision: D19848382
Pulled By: ZolotukhinM
fbshipit-source-id: a581ea2b635b9ba2cc53949616a13d8d3a47caae
Author
Mikhail Zolotukhin
