[PyTorch] Store Argument::alias_info_ on the heap (#64824)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/64824
See comment in function_schema.h for explanation. I claim that this is a good tradeoff because the aliasing information seems to be used only in compiler-ish code paths, where performance isn't as critical as actual execution. If performance is important there too, perhaps we should hoist isWrite into the Argument itself since there are several paths that only care about isWrite.
ghstack-source-id: 138958896
Test Plan: CI, profile schema parsing on startup and see much fewer page faults in createArgumentVector.
Reviewed By: suo
Differential Revision: D30860719
fbshipit-source-id: 1d4d2328f2b8e34f5ddf9d82083fd4dd7b7f738f
