Support: make LLVM Mutexes STL-compatible

Use lock/unlock() convention instead of acquire/release().

llvm-svn: 216336
diff --git a/llvm/unittests/IR/ValueMapTest.cpp b/llvm/unittests/IR/ValueMapTest.cpp
index 0b7198f..a6bad71 100644
--- a/llvm/unittests/IR/ValueMapTest.cpp
+++ b/llvm/unittests/IR/ValueMapTest.cpp
@@ -186,11 +186,11 @@
   };
   static void onRAUW(const ExtraData &Data, KeyT Old, KeyT New) {
     *Data.CalledRAUW = true;
-    EXPECT_FALSE(Data.M->tryacquire()) << "Mutex should already be locked.";
+    EXPECT_FALSE(Data.M->try_lock()) << "Mutex should already be locked.";
   }
   static void onDelete(const ExtraData &Data, KeyT Old) {
     *Data.CalledDeleted = true;
-    EXPECT_FALSE(Data.M->tryacquire()) << "Mutex should already be locked.";
+    EXPECT_FALSE(Data.M->try_lock()) << "Mutex should already be locked.";
   }
   static MutexT *getMutex(const ExtraData &Data) { return Data.M; }
 };