[PATCH] Emit OpenCL local global variables without zeorinitializer

[Joey Gouly]

LGTM! (Apart from those tiny changes)

================
Comment at: lib/CodeGen/CGDecl.cpp:196
@@ +195,3 @@
+  if (Ty.getAddressSpace() != LangAS::opencl_local)
+    Init = EmitNullConstant(D.getType());
+  else
----------------
Use 'Ty' (initialised on line 179) 

================
Comment at: lib/CodeGen/CGDecl.cpp:198
@@ +197,3 @@
+  else
+    Init = llvm::UndefValue::get(getTypes().ConvertTypeForMem(D.getType()));
+
----------------
Use 'LTy' (initialised on line 189)

http://reviews.llvm.org/D6077