From 5eec4941d1591129ea40680477872109bec9f036 Mon Sep 17 00:00:00 2001
From: Nick Lewycky <nicholas@mxc.ca>
Date: Sun, 22 Oct 2006 21:38:24 +0000
Subject: [PATCH] Whoops! Add missing NULL check.

llvm-svn: 31121
---
 lib/Transforms/Scalar/PredicateSimplifier.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Transforms/Scalar/PredicateSimplifier.cpp b/lib/Transforms/Scalar/PredicateSimplifier.cpp
index ca0d056e58c..6cda6d257dc 100644
--- a/lib/Transforms/Scalar/PredicateSimplifier.cpp
+++ b/lib/Transforms/Scalar/PredicateSimplifier.cpp
@@ -350,6 +350,7 @@ namespace {
         } break;
         case Instruction::Xor: {
           ConstantIntegral *CI = dyn_cast<ConstantIntegral>(V1);
+	  if (!CI) break;
           if (CI->isAllOnesValue()) {
             if (BO->getOperand(0) == V1)
               add(Opcode, ConstantBool::getFalse(), BO->getOperand(1), false);