Revert Chris' commits up to r149348 that started causing VMCoreTests unit test to fail.

These are:

r149348
r149351
r149352
r149354
r149356
r149357
r149361
r149362
r149364
r149365

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149470 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AsmParser/LLParser.cpp b/lib/AsmParser/LLParser.cpp
index 24ef216..efd48e1 100644
--- a/lib/AsmParser/LLParser.cpp
+++ b/lib/AsmParser/LLParser.cpp
@@ -2018,8 +2018,7 @@
   }
   case lltok::kw_c:  // c "foo"
     Lex.Lex();
-    ID.ConstantVal = ConstantDataArray::getString(Context, Lex.getStrVal(),
-                                                  false);
+    ID.ConstantVal = ConstantArray::get(Context, Lex.getStrVal(), false);
     if (ParseToken(lltok::StringConstant, "expected string")) return true;
     ID.Kind = ValID::t_Constant;
     return false;