commit b0211714be731bdd6e9eb090e90e0d8146a377a7
author Evan Cheng <evan.cheng@apple.com> Tue Aug 17 20:57:42 2010 +0000
committer Evan Cheng <evan.cheng@apple.com> Tue Aug 17 20:57:42 2010 +0000
tree 637ea8dd812a8f3053c25add68446476b8765f18
parent 373707e4c4b55e7ec34f792a99387b837567468c

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

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 @@
       AU.setPreservesCFG();
       MachineFunctionPass::getAnalysisUsage(AU);
       AU.addRequired<AliasAnalysis>();
+      AU.addPreservedID(MachineLoopInfoID);
       AU.addRequired<MachineDominatorTree>();
       AU.addPreserved<MachineDominatorTree>();
     }