From 5f6bf5d44138a3537822ac057cd7576375c94df1 Mon Sep 17 00:00:00 2001
From: Eli Friedman <eli.friedman@gmail.com>
Date: Thu, 5 May 2011 16:18:11 +0000
Subject: [PATCH] Minor correction to r130877; fixes PR9846 and hopefully the
 buildbot failures.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@130925 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/MachineCSE.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/CodeGen/MachineCSE.cpp b/lib/CodeGen/MachineCSE.cpp
index 5d79e96097e..341afd9dbc6 100644
--- a/lib/CodeGen/MachineCSE.cpp
+++ b/lib/CodeGen/MachineCSE.cpp
@@ -468,7 +468,8 @@ bool MachineCSE::ProcessBlock(MachineBasicBlock *MBB) {
         SmallVector<unsigned,8>::iterator PI = DirectPhysRefs.begin(),
                                           PE = DirectPhysRefs.end();
         for (; PI != PE; ++PI)
-          MBB->addLiveIn(*PI);
+          if (!MBB->isLiveIn(*PI))
+            MBB->addLiveIn(*PI);
       }
       ++NumCSEs;
       if (!PhysRefs.empty())
-- 
2.34.1