From: Benjamin Kramer <benny.kra@googlemail.com>
Date: Mon, 2 Mar 2015 16:42:56 +0000 (+0000)
Subject: Avoid assertion in MSVC 2013 debug builds.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8bbe122af2d0d73083950194141dad35f463be5c;p=oota-llvm.git

Avoid assertion in MSVC 2013 debug builds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230972 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index dcb2ab0a333..00dc717e1e4 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -5419,7 +5419,7 @@ UpdateNodeOperands(SDNode *N, ArrayRef<SDValue> Ops) {
          "Update with wrong number of operands");
 
   // If no operands changed just return the input node.
-  if (std::equal(Ops.begin(), Ops.end(), N->op_begin()))
+  if (!Ops.empty() && std::equal(Ops.begin(), Ops.end(), N->op_begin()))
     return N;
 
   // See if the modified node already exists.