1 files changed, 3 insertions, 6 deletions
diff --git a/Source/JavaScriptCore/dfg/DFGBasicBlock.h b/Source/JavaScriptCore/dfg/DFGBasicBlock.h
index 9d464bdc2..1c890b498 100644
--- a/Source/JavaScriptCore/dfg/DFGBasicBlock.h
+++ b/Source/JavaScriptCore/dfg/DFGBasicBlock.h
@@ -38,11 +38,9 @@ namespace JSC { namespace DFG {
 
 typedef Vector <BlockIndex, 2> PredecessorList;
 
-struct BasicBlock {
-    BasicBlock(unsigned bytecodeBegin, NodeIndex begin, unsigned numArguments, unsigned numLocals)
+struct BasicBlock : Vector<NodeIndex, 8> {
+    BasicBlock(unsigned bytecodeBegin, unsigned numArguments, unsigned numLocals)
         : bytecodeBegin(bytecodeBegin)
-        , begin(begin)
-        , end(NoNode)
         , isOSRTarget(false)
         , cfaHasVisited(false)
         , cfaShouldRevisit(false)
@@ -69,8 +67,6 @@ struct BasicBlock {
     // for other purposes due to inlining.
     unsigned bytecodeBegin;
     
-    NodeIndex begin;
-    NodeIndex end;
     bool isOSRTarget;
     bool cfaHasVisited;
     bool cfaShouldRevisit;
@@ -79,6 +75,7 @@ struct BasicBlock {
 #endif
     bool isReachable;
     
+    Vector<NodeIndex> phis;
     PredecessorList m_predecessors;
     
     Operands<NodeIndex, NodeIndexTraits> variablesAtHead;