Retire llvm::alignOf in favor of C++11 alignof.

No functionality change intended.

llvm-svn: 284733
diff --git a/llvm/lib/Analysis/GlobalsModRef.cpp b/llvm/lib/Analysis/GlobalsModRef.cpp
index d29b970..a0fa181 100644
--- a/llvm/lib/Analysis/GlobalsModRef.cpp
+++ b/llvm/lib/Analysis/GlobalsModRef.cpp
@@ -78,7 +78,7 @@
       return (AlignedMap *)P;
     }
     enum { NumLowBitsAvailable = 3 };
-    static_assert(AlignOf<AlignedMap>::Alignment >= (1 << NumLowBitsAvailable),
+    static_assert(alignof(AlignedMap) >= (1 << NumLowBitsAvailable),
                   "AlignedMap insufficiently aligned to have enough low bits.");
   };