Make this thread-safe.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@74129 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/IPA/Andersens.cpp b/lib/Analysis/IPA/Andersens.cpp
index 8584d06..a22a2fb 100644
--- a/lib/Analysis/IPA/Andersens.cpp
+++ b/lib/Analysis/IPA/Andersens.cpp
@@ -65,6 +65,7 @@
#include "llvm/Analysis/AliasAnalysis.h"
#include "llvm/Analysis/Passes.h"
#include "llvm/Support/Debug.h"
+#include "llvm/System/Atomic.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/SparseBitVector.h"
#include "llvm/ADT/DenseSet.h"
@@ -284,7 +285,8 @@
// Timestamp a node (used for work list prioritization)
void Stamp() {
- Timestamp = Counter++;
+ Timestamp = Counter;
+ sys::AtomicIncrement(&Counter);
}
bool isRep() const {