From 6542416560589c9cfa6298d2edc73f3350ccf56a Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Tue, 17 Aug 2010 20:57:42 +0000
Subject: Machine CSE preserves CFG. Pass manager was freeing machineloopinfo
 after machine cse before.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@111281 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/MachineCSE.cpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'lib/CodeGen/MachineCSE.cpp')

diff --git a/lib/CodeGen/MachineCSE.cpp b/lib/CodeGen/MachineCSE.cpp
index 60642d4..92e2299 100644
--- a/lib/CodeGen/MachineCSE.cpp
+++ b/lib/CodeGen/MachineCSE.cpp
@@ -49,6 +49,7 @@ namespace {
       AU.setPreservesCFG();
       MachineFunctionPass::getAnalysisUsage(AU);
       AU.addRequired<AliasAnalysis>();
+      AU.addPreservedID(MachineLoopInfoID);
       AU.addRequired<MachineDominatorTree>();
       AU.addPreserved<MachineDominatorTree>();
     }
-- 
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