From: Chris Lattner <sabre@nondot.org>
Date: Mon, 13 Mar 2006 18:37:30 +0000 (+0000)
Subject: make sure dead token factor nodes are removed by the dag combiner.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=ac0f8f29290ff018d51ce58bd11be13ab148e698;p=oota-llvm.git

make sure dead token factor nodes are removed by the dag combiner.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@26731 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 33b046c3670..b388d830f36 100644
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -665,6 +665,7 @@ SDOperand DAGCombiner::visitTokenFactor(SDNode *N) {
   for (unsigned i = 0, e = N->getNumOperands(); i != e; ++i) {
     SDOperand Op = N->getOperand(i);
     if (Op.getOpcode() == ISD::TokenFactor && Op.hasOneUse()) {
+      AddToWorkList(Op.Val);  // Remove dead node.
       Changed = true;
       for (unsigned j = 0, e = Op.getNumOperands(); j != e; ++j)
         Ops.push_back(Op.getOperand(j));