gcc likes things spelled correctly

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47981 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/CBackend/CBackend.cpp b/lib/Target/CBackend/CBackend.cpp
index 3a4e97e..4732e4d 100644
--- a/lib/Target/CBackend/CBackend.cpp
+++ b/lib/Target/CBackend/CBackend.cpp
@@ -2684,7 +2684,7 @@
     return false;
   }
   case Intrinsic::memory_barrier:
-    Out << "__sync_syncronize()";
+    Out << "__sync_synchronize()";
     return true;
   case Intrinsic::vastart:
     Out << "0; ";