Fix crasher in GVN due to my recent capture tracking changes.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145047 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/MemoryDependenceAnalysis.cpp b/lib/Analysis/MemoryDependenceAnalysis.cpp
index 128c7f9..704e27b 100644
--- a/lib/Analysis/MemoryDependenceAnalysis.cpp
+++ b/lib/Analysis/MemoryDependenceAnalysis.cpp
@@ -375,7 +375,7 @@
   // with a smarter AA in place, this test is just wasting compile time.
   if (!DT) return AliasAnalysis::ModRef;
   const Value *Object = GetUnderlyingObject(MemLoc.Ptr, TD);
-  if (!isIdentifiedObject(Object) || isa<GlobalVariable>(Object))
+  if (!isIdentifiedObject(Object) || isa<GlobalValue>(Object))
     return AliasAnalysis::ModRef;
   ImmutableCallSite CS(Inst);
   if (!CS.getInstruction()) return AliasAnalysis::ModRef;