# HG changeset patch
# User kvn
# Date 1262972551 28800
# Node ID bea7a22a6f797be616a7124d8fc193d5c88209b0
# Parent  cd37471eaecc09a8917693dd969cc9c3eb27a21d
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

diff -r cd37471eaecc -r bea7a22a6f79 src/share/vm/opto/ifnode.cpp
--- a/src/share/vm/opto/ifnode.cpp	Fri Jan 08 11:09:46 2010 +0100
+++ b/src/share/vm/opto/ifnode.cpp	Fri Jan 08 09:42:31 2010 -0800
@@ -531,6 +531,9 @@
   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