From be0617e767cd97904b4d68583367ac2fb6565158 Mon Sep 17 00:00:00 2001
From: kvn <unknown>
Date: Fri, 8 Jan 2010 09:42:31 -0800
Subject: [PATCH] 6915110: IfNode::up_one_dom moves beyond RootNode bug in
 src/share/vm/opto/ifnode.cpp Summary: Check RootNode before check Loop in
 IfNode::up_one_dom(). Reviewed-by: never Contributed-by: kevin.brown@sun.com

---
 src/share/vm/opto/ifnode.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/share/vm/opto/ifnode.cpp b/src/share/vm/opto/ifnode.cpp
index 51ca8fe28..a026fceef 100644
--- a/src/share/vm/opto/ifnode.cpp
+++ b/src/share/vm/opto/ifnode.cpp
@@ -531,6 +531,9 @@ Node* IfNode::up_one_dom(Node *curr, bool linear_only) {
   if (linear_only)
     return NULL;
 
+  if( dom->is_Root() )
+    return NULL;
+
   // Else hit a Region.  Check for a loop header
   if( dom->is_Loop() )
     return dom->in(1);          // Skip up thru loops
-- 
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