From 0c209430b4722f741b0f99bbe8f480e2ba4ffd59 Mon Sep 17 00:00:00 2001
From: Bill Wendling <isanbard@gmail.com>
Date: Fri, 4 Jan 2008 20:54:55 +0000
Subject: Don't recalculate the loop info and loop dominators analyses if
 they're preserved.

llvm-svn: 45596
---
 llvm/lib/CodeGen/TwoAddressInstructionPass.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'llvm/lib/CodeGen/TwoAddressInstructionPass.cpp')

diff --git a/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp b/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
index dd71bec..8f0c473 100644
--- a/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
+++ b/llvm/lib/CodeGen/TwoAddressInstructionPass.cpp
@@ -69,6 +69,8 @@ const PassInfo *llvm::TwoAddressInstructionPassID = X.getPassInfo();
 void TwoAddressInstructionPass::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addRequired<LiveVariables>();
   AU.addPreserved<LiveVariables>();
+  AU.addPreservedID(MachineLoopInfoID);
+  AU.addPreservedID(MachineDominatorsID);
   AU.addPreservedID(PHIEliminationID);
   MachineFunctionPass::getAnalysisUsage(AU);
 }
-- 
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