From 779ccea5b624eae7f2440444e342339aa372f42c Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Fri, 7 Dec 2007 21:30:01 +0000
Subject: [PATCH] Add comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44686 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/X86ISelLowering.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 2653481418a..c0001c0f974 100644
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -2758,6 +2758,8 @@ static SDOperand CommuteVectorShuffle(SDOperand Op, SDOperand &V1,
   return DAG.getNode(ISD::VECTOR_SHUFFLE, VT, V1, V2, Mask);
 }
 
+/// CommuteVectorShuffleMask - Change values in a shuffle permute mask assuming
+/// the two vector operands have swapped position.
 static
 SDOperand CommuteVectorShuffleMask(SDOperand Mask, SelectionDAG &DAG) {
   MVT::ValueType MaskVT = Mask.getValueType();
-- 
2.34.1