From 9b583b49103f21888ac3de3f7941a98a63a23aea Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 11 May 2005 05:09:47 +0000
Subject: [PATCH] Legalize this correctly

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21859 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/SelectionDAG/LegalizeDAG.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index d59e335c187..2f72dd4fa94 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -2173,7 +2173,9 @@ void SelectionDAGLegalize::ExpandOp(SDOperand Op, SDOperand &Lo, SDOperand &Hi){
 
   case ISD::CTPOP:
     ExpandOp(Node->getOperand(0), Lo, Hi);
-    Lo = DAG.getNode(ISD::ADD, NVT, Lo, Hi);
+    Lo = DAG.getNode(ISD::ADD, NVT,          // ctpop(HL) -> ctpop(H)+ctpop(L)
+                     DAG.getNode(ISD::CTPOP, NVT, Lo),
+                     DAG.getNode(ISD::CTPOP, NVT, Hi));
     Hi = DAG.getConstant(0, NVT);
     break;