tree 90e981e363bab41ffcedbecb04d19fa89fd96e1f
parent 51ea9fbcbd837b7c408b4fdf3f802b8f91abaa5f
author Shilei Tian <tianshilei1992@gmail.com> 1635619439 -0400
committer Copybara-Service <copybara-worker@google.com> 1635619802 -0700

[OpenMP][DeviceRTL] Fixed an issue that causes hang in SU3

The synchronization at the end of parallel region cannot make sure all threads
exit the scope. As a result, the assertions right after it might be hit, and
further the `state::assumeInitialState(IsSPMD)` in `__kmpc_target_deinit` may
not hold as well. We either add a synchronization right after the parallel region,
or remove the assertions and assuptions. Here we choose the first one as those
assertions and assumptions can help optimizations.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D112861

GitOrigin-RevId: 025f5492401489269ab980910f4fda98f5b06bd1