Don't put TGParser scratch results in the output.

Only fully expanded Records should go into RecordKeeper.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@157431 91177308-0d34-0410-b5e6-96231b3b80d8

test/TableGen/ForeachLoop.td

@@ -9,6 +9,7 @@ class Register<string name, int idx> {
 foreach i = [0, 1, 2, 3, 4, 5, 6, 7] in
   def R#i : Register<"R"#i, i>;
 
+// CHECK-NOT: !strconcat
 
 // CHECK: def R0
 // CHECK: string Name = "R0";