From: Chris Lattner <sabre@nondot.org>
Date: Tue, 21 Sep 2010 20:46:40 +0000 (+0000)
Subject: correct this logic.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=77bd88cda5e007c6f4e042fc6b6104c9ae62083b;p=oota-llvm.git

correct this logic.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114474 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
index 7b2898dcbfb..a754ac2040b 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
@@ -2087,8 +2087,8 @@ SelectCodeCommon(SDNode *NodeToMatch, const unsigned char *MatcherTable,
       unsigned RecNo = MatcherTable[MatcherIndex++];
       assert(RecNo < RecordedNodes.size() && "Invalid CheckComplexPat");
       SDNode *Parent = 0;
-      if (NodeStack.size() > 1)
-        Parent = NodeStack[NodeStack.size()-2].getNode();
+      if (!NodeStack.empty())
+        Parent = NodeStack[NodeStack.size()-1].getNode();
       
       if (!CheckComplexPattern(NodeToMatch, Parent, RecordedNodes[RecNo], CPNum,
                                RecordedNodes))