From 54e247d2d0c07544b3e638e80b816f352ec152c1 Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Tue, 12 Dec 2006 23:07:44 +0000
Subject: [PATCH] removeNotPreservedAnalysis().

Do not remove ImmutablePass from the list.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32507 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/VMCore/PassManager.cpp | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/lib/VMCore/PassManager.cpp b/lib/VMCore/PassManager.cpp
index 867d9ae5fa7..1f1890c31f6 100644
--- a/lib/VMCore/PassManager.cpp
+++ b/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;
   }
 }
 
-- 
2.34.1