tree 12139df3a0b81cbaf3ff1f5caaa508ae8db8d7c0
parent bbbee1dd60a97871f4b6cafd381d44bb32c9aa0e
author Alexey Bataev <a.bataev@hotmail.com> 1562599823 +0000
committer Alexey Bataev <a.bataev@hotmail.com> 1562599823 +0000

[OPENMP]Make __kmpc_push_tripcount thread safe.

Summary:
__kmpc_push_tripcount function is not thread safe and may lead to data
race when the target regions are executed in parallel threads. The patch
makes loopTripCnt counter thread aware and stores the tripcount value
per thread in the map. Access to map is guarded by mutex to prevent
data race in the map itself.
Test is for NVPTX target because it does not work correctly on the
host. Seems to me, there is a problem in libomp with target regions in
the parallel threads.

Reviewers: grokos

Subscribers: guansong, jfb, jdoerfert, openmp-commits, kkwli0, caomhin

Tags: #openmp

Differential Revision: https://reviews.llvm.org/D64080

git-svn-id: https://llvm.org/svn/llvm-project/openmp/trunk@365332 91177308-0d34-0410-b5e6-96231b3b80d8