[PyTorch] Make RecordFunction store inputs as ArrayRef (#72484)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/72484
Stepping stone toward stack-allocating array of inputs.
Funnily enough, this seems to improve performance too.
ghstack-source-id: 155492056
Test Plan:
1) CI
2) framework overhead benchmark with --stressTestRecordFunction --captureRecordFunctionInputs goes from 0.76 usec/iter to 0.72.
Reviewed By: chaekit, robieta
Differential Revision: D34061169
fbshipit-source-id: 073fedf1d3d162f927c4e9867cfda7dbfabba215
(cherry picked from commit dae77cf1cd8813d902d73999ad97133a3ef8e291)
