More "prep" work for handling UTF16 CFString.

Patch by Jean-Daniel Dupas. Thanks!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@68203 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGExprConstant.cpp b/lib/CodeGen/CGExprConstant.cpp
index 89b3319..51ad5b6 100644
--- a/lib/CodeGen/CGExprConstant.cpp
+++ b/lib/CodeGen/CGExprConstant.cpp
@@ -442,9 +442,8 @@
         break;
       const Expr *Arg = CE->getArg(0)->IgnoreParenCasts();
       const StringLiteral *Literal = cast<StringLiteral>(Arg);
-      std::string S(Literal->getStrData(), Literal->getByteLength());
       // FIXME: need to deal with UCN conversion issues.
-      return CGM.GetAddrOfConstantCFString(S);
+      return CGM.GetAddrOfConstantCFString(Literal);
     }
     case Expr::BlockExprClass: {
       std::string FunctionName;