From 82318c6f14e1d227a244720651562d81b7c9b18d Mon Sep 17 00:00:00 2001 From: Andrey Churbanov Date: Wed, 14 Nov 2018 13:49:41 +0000 Subject: [PATCH] Fix for bugzilla https://bugs.llvm.org/show_bug.cgi?id=39137. Do not write to internal structure if it keeps same value. Differential Revision: https://reviews.llvm.org/D54305 llvm-svn: 346862 --- openmp/runtime/src/kmp_runtime.cpp | 2 ++ 1 file changed, 2 insertions(+) diff --git a/openmp/runtime/src/kmp_runtime.cpp b/openmp/runtime/src/kmp_runtime.cpp index b861c06..f2e9956 100644 --- a/openmp/runtime/src/kmp_runtime.cpp +++ b/openmp/runtime/src/kmp_runtime.cpp @@ -2649,6 +2649,8 @@ void __kmp_set_num_threads(int new_nth, int gtid) { KMP_COUNT_VALUE(OMP_set_numthreads, new_nth); thread = __kmp_threads[gtid]; + if (thread->th.th_current_task->td_icvs.nproc == new_nth) + return; // nothing to do __kmp_save_internal_controls(thread); -- 2.7.4