From 0770d8e32630e91f057b7972254c8d2ebbc3be61 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Wed, 11 Jan 2006 05:11:13 +0000
Subject: Preserve and update ETForest.  Patch by Daniel Berlin

llvm-svn: 25203
---
 llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'llvm/lib/Transforms/Utils')

diff --git a/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp b/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp
index 7e44574a6e8..5bb7d46908c 100644
--- a/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp
+++ b/llvm/lib/Transforms/Utils/BreakCriticalEdges.cpp
@@ -34,6 +34,7 @@ namespace {
     virtual bool runOnFunction(Function &F);
 
     virtual void getAnalysisUsage(AnalysisUsage &AU) const {
+      AU.addPreserved<ETForest>();
       AU.addPreserved<DominatorSet>();
       AU.addPreserved<ImmediateDominators>();
       AU.addPreserved<DominatorTree>();
@@ -153,6 +154,10 @@ bool llvm::SplitCriticalEdge(TerminatorInst *TI, unsigned SuccNum, Pass *P) {
     ID->addNewBlock(NewBB, TIBB);
   }
 
+  // Update the forest?
+  if (ETForest *EF = P->getAnalysisToUpdate<ETForest>())
+    EF->addNewBlock(NewBB, TIBB);
+
   // Should we update DominatorTree information?
   if (DominatorTree *DT = P->getAnalysisToUpdate<DominatorTree>()) {
     DominatorTree::Node *TINode = DT->getNode(TIBB);
-- 
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