From 6226436fd365f491a87914451dcd2b04137994e9 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.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45596 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/SimpleRegisterCoalescing.cpp | 2 ++
 1 file changed, 2 insertions(+)

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

diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp
index 69dd56d843..de94688e3a 100644
--- a/lib/CodeGen/SimpleRegisterCoalescing.cpp
+++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp
@@ -67,6 +67,8 @@ const PassInfo *llvm::SimpleRegisterCoalescingID = X.getPassInfo();
 
 void SimpleRegisterCoalescing::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addPreserved<LiveIntervals>();
+  AU.addPreserved<MachineLoopInfo>();
+  AU.addPreservedID(MachineDominatorsID);
   AU.addPreservedID(PHIEliminationID);
   AU.addPreservedID(TwoAddressInstructionPassID);
   AU.addRequired<LiveVariables>();
-- 
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