From 151493a00fe3a070f03c52efd1e07135a11cf5f7 Mon Sep 17 00:00:00 2001
From: Sanjoy Das <sanjoy@playingwithpointers.com>
Date: Thu, 15 Sep 2016 01:56:58 +0000
Subject: [LangRef] Add a clarifying example for undef

llvm-svn: 281570
---
 llvm/docs/LangRef.rst | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'llvm/docs/LangRef.rst')

diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
index 917a54622a8..e156245394e 100644
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -2834,6 +2834,9 @@ bits. Any output bit can have a zero or one depending on the input bits.
     Safe:
       %A = -1
       %B = 0
+    Safe:
+      %A = %X  ;; By choosing undef as 0
+      %B = %X  ;; By choosing undef as -1
     Unsafe:
       %A = undef
       %B = undef
-- 
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