Author: evancheng
Date: Fri Dec 7 15:30:01 2007
New Revision: 44686
URL: http://llvm.org/viewvc/llvm-project?rev=44686&view=rev
Log:
Add comment.
Modified:
llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL:
http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=44686&r1=44685&r2=44686&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Fri Dec 7 15:30:01 2007
@@ -2758,6 +2758,8 @@
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();
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