[Docs] Added RTTI, Run-time Type Information

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D148538

diff --git a/llvm/docs/Lexicon.rst b/llvm/docs/Lexicon.rst
index 8045419..1d4894f 100644 (file)
--- a/llvm/docs/Lexicon.rst
+++ b/llvm/docs/Lexicon.rst
@@ -275,6 +275,9 @@ R
 **RPO**
     Reverse postorder
 
+**RTTI**
+    Run-time Type Information
+
 S
 -