diff --git a/llvm/docs/LangRef.rst b/llvm/docs/LangRef.rst
--- a/llvm/docs/LangRef.rst
+++ b/llvm/docs/LangRef.rst
@@ -17994,7 +17994,7 @@
       ;; Lanes at and above %pivot are taken from %on_false
       %atfirst = insertelement <4 x i32> undef, i32 %pivot, i32 0
       %splat = shufflevector <4 x i32> %atfirst, <4 x i32> poison, <4 x i32> zeroinitializer
-      %pivotmask = icmp ult <4 x i32> %splat, <4 x i32> <i32 0, i32 1, i32 2, i32 3>
+      %pivotmask = icmp ult <4 x i32> <i32 0, i32 1, i32 2, i32 3>, <4 x i32> %splat
       %mergemask = and <4 x i1> %cond, <4 x i1> %pivotmask
       %also.r = select <4 x i1> %mergemask, <4 x i32> %on_true, <4 x i32> %on_false