From be6bd55e96203f3d96a757083a068eb288c88a8e Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Tue, 12 Dec 2006 23:07:44 +0000
Subject: removeNotPreservedAnalysis().

Do not remove ImmutablePass from the list.

llvm-svn: 32507
---
 llvm/lib/VMCore/PassManager.cpp | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

(limited to 'llvm/lib/VMCore/PassManager.cpp')

diff --git a/llvm/lib/VMCore/PassManager.cpp b/llvm/lib/VMCore/PassManager.cpp
index 867d9ae5fa7..1f1890c31f6 100644
--- a/llvm/lib/VMCore/PassManager.cpp
+++ b/llvm/lib/VMCore/PassManager.cpp
@@ -580,13 +580,17 @@ void PMDataManager::removeNotPreservedAnalysis(Pass *P) {
 
   const std::vector<AnalysisID> &PreservedSet = AnUsage.getPreservedSet();
   for (std::map<AnalysisID, Pass*>::iterator I = AvailableAnalysis.begin(),
-         E = AvailableAnalysis.end(); I != E; ++I ) {
+         E = AvailableAnalysis.end(); I != E; ) {
     if (std::find(PreservedSet.begin(), PreservedSet.end(), I->first) == 
         PreservedSet.end()) {
       // Remove this analysis
-      std::map<AnalysisID, Pass*>::iterator J = I++;
-      AvailableAnalysis.erase(J);
-    }
+      if (!dynamic_cast<ImmutablePass*>(I->second)) {
+        std::map<AnalysisID, Pass*>::iterator J = I++;
+        AvailableAnalysis.erase(J);
+      } else
+        ++I;
+    } else
+      ++I;
   }
 }
 
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