Unuse labels when bailing out of StubCompiler methods....

src/ia32/stub-cache-ia32.cc

 // Copyright 2006-2009 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 2437 matching lines @@
   CheckPrototypes(object, eax, last, ebx, edx, edi, name, &miss);
 
   // If the last object in the prototype chain is a global object,
   // check that the global property cell is empty.
   if (last->IsGlobalObject()) {
     Object* cell = GenerateCheckPropertyCell(masm(),
                                              GlobalObject::cast(last),
                                              name,
                                              edx,
                                              &miss);
-    if (cell->IsFailure()) return cell;
+    if (cell->IsFailure()) {
+      miss.Unuse();
+      return cell;
+    }
   }
 
   // Return undefined if maps of the full prototype chain are still the
   // same and no global property with this name contains a value.
   __ mov(eax, Factory::undefined_value());
   __ ret(0);
 
   __ bind(&miss);
   GenerateLoadMiss(masm(), Code::LOAD_IC);
 
@@ skipping 29 matching lines @@
   // ----------- S t a t e -------------
   //  -- eax    : receiver
   //  -- ecx    : name
   //  -- esp[0] : return address
   // -----------------------------------
   Label miss;
 
   Failure* failure = Failure::InternalError();
   bool success = GenerateLoadCallback(object, holder, eax, ecx, ebx, edx, edi,
                                       callback, name, &miss, &failure);
-  if (!success) return failure;
+  if (!success) {
+    miss.Unuse();
+    return failure;
+  }
 
   __ bind(&miss);
   GenerateLoadMiss(masm(), Code::LOAD_IC);
 
   // Return the generated code.
   return GetCode(CALLBACKS, name);
 }
 
 
 Object* LoadStubCompiler::CompileLoadConstant(JSObject* object,
@@ skipping 140 matching lines @@
 
   __ IncrementCounter(&Counters::keyed_load_callback, 1);
 
   // Check that the name has not changed.
   __ cmp(Operand(eax), Immediate(Handle<String>(name)));
   __ j(not_equal, &miss, not_taken);
 
   Failure* failure = Failure::InternalError();
   bool success = GenerateLoadCallback(receiver, holder, edx, eax, ebx, ecx, edi,
                                       callback, name, &miss, &failure);
-  if (!success) return failure;
+  if (!success) {
+    miss.Unuse();
+    return failure;
+  }
 
   __ bind(&miss);
+
   __ DecrementCounter(&Counters::keyed_load_callback, 1);
   GenerateLoadMiss(masm(), Code::KEYED_LOAD_IC);
 
   // Return the generated code.
   return GetCode(CALLBACKS, name);
 }
 
 
 Object* KeyedLoadStubCompiler::CompileLoadConstant(String* name,
                                                    JSObject* receiver,
@@ skipping 269 matching lines @@
   // Return the generated code.
   return GetCode();
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32