From 67d65bb69d5cad957cbb6d672dc0b4a19c211a42 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/LiveIntervalAnalysis.cpp | 2 ++
 1 file changed, 2 insertions(+)

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

diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 46cdec7bd6..5c9d69a231 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -60,6 +60,8 @@ namespace {
 void LiveIntervals::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addPreserved<LiveVariables>();
   AU.addRequired<LiveVariables>();
+  AU.addPreservedID(MachineLoopInfoID);
+  AU.addPreservedID(MachineDominatorsID);
   AU.addPreservedID(PHIEliminationID);
   AU.addRequiredID(PHIEliminationID);
   AU.addRequiredID(TwoAddressInstructionPassID);
-- 
cgit v1.2.3-70-g09d2