Fix MSVC "result of 32-bit shift implicitly converted to 64 bits" warning. NFCI.

llvm-svn: 373729
diff --git a/llvm/lib/ExecutionEngine/JITLink/MachOLinkGraphBuilder.cpp b/llvm/lib/ExecutionEngine/JITLink/MachOLinkGraphBuilder.cpp
index 57fbc69..7366f53 100644
--- a/llvm/lib/ExecutionEngine/JITLink/MachOLinkGraphBuilder.cpp
+++ b/llvm/lib/ExecutionEngine/JITLink/MachOLinkGraphBuilder.cpp
@@ -312,7 +312,7 @@
                                           Twine(KV.first));
         NSym.GraphSymbol = &G->addCommonSymbol(
             *NSym.Name, NSym.S, getCommonSection(), NSym.Value, 0,
-            1U << MachO::GET_COMM_ALIGN(NSym.Desc),
+            1ull << MachO::GET_COMM_ALIGN(NSym.Desc),
             NSym.Desc & MachO::N_NO_DEAD_STRIP);
       } else {
         if (!NSym.Name)