Revert r149363 which was part a series of commits that were reverted in llvm
commit 149470. This fixes test/CodeGen/PR3589-freestanding-libcalls.c.

Original log:

    ConstantArray::get() (for strings) is going away, use
    ConstantDataArray::getString instead.

    Many instances of ConstantArray::get() could be moved to
    use more efficient ConstantDataArray methods that avoid a ton
    of intermediate Constant*'s for each element (e.g.
    GetConstantArrayFromStringLiteral).  I don't plan on doing this
    in the short-term though.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@149477 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGRTTI.cpp b/lib/CodeGen/CGRTTI.cpp
index a5883f6..120e711 100644
--- a/lib/CodeGen/CGRTTI.cpp
+++ b/lib/CodeGen/CGRTTI.cpp
@@ -125,8 +125,7 @@
   // We know that the mangled name of the type starts at index 4 of the
   // mangled name of the typename, so we can just index into it in order to
   // get the mangled name of the type.
-  llvm::Constant *Init = llvm::ConstantDataArray::getString(VMContext,
-                                                            Name.substr(4));
+  llvm::Constant *Init = llvm::ConstantArray::get(VMContext, Name.substr(4));
 
   llvm::GlobalVariable *GV = 
     CGM.CreateOrReplaceCXXRuntimeVariable(Name, Init->getType(), Linkage);