tree af86595e554283fc17b41a8df2d9aae4cbef41cb
parent 843b29ed3df9d4b2aa4623f4fe892efd6172d0ea
author Joseph Huber <jhuber6@vols.utk.edu> 1633744374 -0400
committer Copybara-Service <copybara-worker@google.com> 1633745146 -0700

[OpenMP] Avoid calling `isSPMDMode` during RT initialization

Until we hit the first barrier we should not call `mapping::isSPMDMode`
with all threads. Instead, we now have (and use during initialization) a
`mapping::isMainThreadInGenericMode` overload that takes the known
SPMD-mode state and one that queries it.

Reviewed By: tianshilei1992

Differential Revision: https://reviews.llvm.org/D111381

GitOrigin-RevId: 85ad56633593d011ab00f4eb431ffd879677bffc