From: Evan Cheng <evan.cheng@apple.com>
Date: Fri, 7 Dec 2007 21:30:01 +0000 (+0000)
Subject: Add comment.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=779ccea5b624eae7f2440444e342339aa372f42c;p=oota-llvm.git

Add comment.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44686 91177308-0d34-0410-b5e6-96231b3b80d8
---

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();