From 1113d94f23ad83a52583760dc5925bf119f04fa5 Mon Sep 17 00:00:00 2001
From: kvn <unknown>
Date: Tue, 11 Mar 2008 11:04:40 -0700
Subject: [PATCH] 6623167: C2 crashed in StoreCMNode::Value Summary: C2 crashed
 in StoreCMNode::Value because n->in(MemNode::OopStore) is 0. Reviewed-by:
 rasbold, never

---
 src/share/vm/opto/memnode.cpp | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/share/vm/opto/memnode.cpp b/src/share/vm/opto/memnode.cpp
index 03f43d885..2cfa4281c 100644
--- a/src/share/vm/opto/memnode.cpp
+++ b/src/share/vm/opto/memnode.cpp
@@ -1771,9 +1771,16 @@ Node *StoreCMNode::Identity( PhaseTransform *phase ) {
 
 //------------------------------Value-----------------------------------------
 const Type *StoreCMNode::Value( PhaseTransform *phase ) const {
+  // Either input is TOP ==> the result is TOP
+  const Type *t = phase->type( in(MemNode::Memory) );
+  if( t == Type::TOP ) return Type::TOP;
+  t = phase->type( in(MemNode::Address) );
+  if( t == Type::TOP ) return Type::TOP;
+  t = phase->type( in(MemNode::ValueIn) );
+  if( t == Type::TOP ) return Type::TOP;
   // If extra input is TOP ==> the result is TOP
-  const Type *t1 = phase->type( in(MemNode::OopStore) );
-  if( t1 == Type::TOP ) return Type::TOP;
+  t = phase->type( in(MemNode::OopStore) );
+  if( t == Type::TOP ) return Type::TOP;
 
   return StoreNode::Value( phase );
 }
-- 
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