GlobalValue: use getValueType() instead of getType()->getPointerElementType().

Reviewers: mjacob

Subscribers: jholewinski, arsenm, dsanders, dblaikie

Patch by Eduard Burtescu.

Differential Revision: http://reviews.llvm.org/D16260

llvm-svn: 257999
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
index 725063a..6888211 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfCompileUnit.cpp
@@ -83,8 +83,8 @@
 
   // First operand points to a global struct.
   Value *Ptr = CE->getOperand(0);
-  if (!isa<GlobalValue>(Ptr) ||
-      !isa<StructType>(cast<PointerType>(Ptr->getType())->getElementType()))
+  GlobalValue *GV = dyn_cast<GlobalValue>(Ptr);
+  if (!GV || !isa<StructType>(GV->getValueType()))
     return nullptr;
 
   // Second operand is zero.