Add bunch of branch folding stuff

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76055 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/SystemZ/SystemZ.h b/lib/Target/SystemZ/SystemZ.h
index cfba487..e6a1707 100644
--- a/lib/Target/SystemZ/SystemZ.h
+++ b/lib/Target/SystemZ/SystemZ.h
@@ -39,7 +39,8 @@
       NL  = 10,
       LE  = 11,
       NH  = 12,
-      NO  = 13
+      NO  = 13,
+      INVALID = -1
     };
   }