Silence tsan false-positives (tsan can't track things which are only safe due to

memory fences) in statistics registration, which works the same way that
ManagedStatic registration does.

llvm-svn: 145869

1 files changed, 3 insertions, 0 deletions

diff --git a/llvm/lib/Support/Statistic.cpp b/llvm/lib/Support/Statistic.cpp
index 04a44a0f711..d8a6ad35ba9 100644
--- a/llvm/lib/Support/Statistic.cpp
+++ b/llvm/lib/Support/Statistic.cpp
@@ -73,9 +73,12 @@ void Statistic::RegisterStatistic() {
     if (Enabled)
       StatInfo->addStatistic(this);
 
+    TsanHappensBefore(this);
     sys::MemoryFence();
     // Remember we have been registered.
+    TsanIgnoreWritesBegin();
     Initialized = true;
+    TsanIgnoreWritesEnd();
   }
 }