Fix bit math (#46837)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/46837
Formerly `static_cast<StreamId>(bits)` and `static_cast<DeviceIndex>(bits)` were and-ed against `ull` types resulting in an integer promotion which later raised a warning in downcasting passes to `Stream` and `Device`.
Moving the `&` operation inside the cast results in two `uint64_t` being operated on and then cast to the correct type, eliminating the warning.
Test Plan: Standard pre-commit test rig.
Reviewed By: malfet
Differential Revision: D24481292
fbshipit-source-id: a8bcbde631054c26ca8c98fbed275254dd359dd0
