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changeset 43:d821d920b465

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6623167: C2 crashed in StoreCMNode::Value Summary: C2 crashed in StoreCMNode::Value because n->in(MemNode::OopStore) is 0. Reviewed-by: rasbold, never
author kvn
date Tue, 11 Mar 2008 11:04:40 -0700
parents 1216832af221
children 52fed2ec0afb
files src/share/vm/opto/memnode.cpp
diffstat 1 files changed, 9 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/src/share/vm/opto/memnode.cpp	Mon Mar 10 17:21:56 2008 -0700
+++ b/src/share/vm/opto/memnode.cpp	Tue Mar 11 11:04:40 2008 -0700
@@ -1771,9 +1771,16 @@
 
 //------------------------------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 );
 }