From f5e28d9dfe8991ed73b9c7fd7ec9126fcd01435f Mon Sep 17 00:00:00 2001
From: Devang Patel <dpatel@apple.com>
Date: Wed, 7 Feb 2007 19:37:53 +0000
Subject: [PATCH] Do not drop transferred last uses on the floor. Use
 handleLastUserOverflow().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34006 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/VMCore/PassManager.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/VMCore/PassManager.cpp b/lib/VMCore/PassManager.cpp
index 02938710fac..bc85967ee1c 100644
--- a/lib/VMCore/PassManager.cpp
+++ b/lib/VMCore/PassManager.cpp
@@ -157,6 +157,7 @@ public:
       recordAvailableAnalysis(IP);
     } else {
       P->assignPassManager(activeStack);
+      activeStack.handleLastUserOverflow();
     }
 
   }
@@ -255,6 +256,7 @@ public:
       recordAvailableAnalysis(IP);
     } else {
       P->assignPassManager(activeStack);
+      activeStack.handleLastUserOverflow();
     }
 
   }
@@ -1220,6 +1222,7 @@ void PMStack::handleLastUserOverflow() {
       if (!TLU.empty()) {
         Pass *P = dynamic_cast<Pass *>(Parent);
         TPM->setLastUser(TLU, P);
+        TLU.clear();
       }
     }
   }