- Added fast case for extending the JSObject properties storage....

src/ic-ia32.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 651 matching lines @@
   __ pop(ebx);
   __ push(ecx);
   __ push(eax);
   __ push(ebx);
 
   // Perform tail call to the entry.
   __ TailCallRuntime(f, 2);
 }
 
 
-// Defined in ic.cc.
-Object* StoreIC_Miss(Arguments args);
-
 void StoreIC::GenerateMegamorphic(MacroAssembler* masm) {
   // ----------- S t a t e -------------
   //  -- eax    : value
   //  -- ecx    : name
   //  -- esp[0] : return address
   //  -- esp[4] : receiver
   // -----------------------------------
 
   // Get the receiver from the stack and probe the stub cache.
   __ mov(edx, Operand(esp, 4));
   Code::Flags flags = Code::ComputeFlags(Code::STORE_IC, MONOMORPHIC);
   StubCache::GenerateProbe(masm, flags, edx, ecx, ebx);
 
   // Cache miss: Jump to runtime.
   Generate(masm, ExternalReference(IC_Utility(kStoreIC_Miss)));
 }
 
 
+void StoreIC::GenerateExtendStorage(MacroAssembler* masm) {
+  // ----------- S t a t e -------------
+  //  -- eax    : value
+  //  -- ecx    : transition map
+  //  -- esp[0] : return address
+  //  -- esp[4] : receiver
+  // -----------------------------------
+
+  // Move the return address below the arguments.
+  __ pop(ebx);
+  __ push(Operand(esp, 0));
+  __ push(ecx);
+  __ push(eax);
+  __ push(ebx);
+  // Perform tail call to the entry.
+  __ TailCallRuntime(ExternalReference(IC_Utility(kStoreIC_ExtendStorage)), 3);
+}
+
+
 void StoreIC::Generate(MacroAssembler* masm, const ExternalReference& f) {
   // ----------- S t a t e -------------
   //  -- eax    : value
   //  -- ecx    : name
   //  -- esp[0] : return address
   //  -- esp[4] : receiver
   // -----------------------------------
 
   // Move the return address below the arguments.
   __ pop(ebx);
@@ skipping 27 matching lines @@
 
   // Do tail-call to runtime routine.
   __ TailCallRuntime(f, 3);
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal