Code gen for ObjCIsaExpr AST used as lvalue.
(fixes radar 7457534).

llvm-svn: 90995
diff --git a/clang/lib/CodeGen/CGExpr.cpp b/clang/lib/CodeGen/CGExpr.cpp
index fde944f..873c28c 100644
--- a/clang/lib/CodeGen/CGExpr.cpp
+++ b/clang/lib/CodeGen/CGExpr.cpp
@@ -245,6 +245,8 @@
   switch (E->getStmtClass()) {
   default: return EmitUnsupportedLValue(E, "l-value expression");
 
+  case Expr::ObjCIsaExprClass:
+    return EmitObjCIsaExpr(cast<ObjCIsaExpr>(E));
   case Expr::BinaryOperatorClass:
     return EmitBinaryOperatorLValue(cast<BinaryOperator>(E));
   case Expr::CallExprClass: