Reuse the nonexistent handler frontend for transition handlers

src/mips/stub-cache-mips.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_MIPS
 
 #include "src/codegen.h"
 #include "src/ic-inl.h"
@@ skipping 262 matching lines @@
     Register scratch, Label* miss) {
   Handle<Cell> cell = JSGlobalObject::EnsurePropertyCell(global, name);
   ASSERT(cell->value()->IsTheHole());
   __ li(scratch, Operand(cell));
   __ lw(scratch, FieldMemOperand(scratch, Cell::kValueOffset));
   __ LoadRoot(at, Heap::kTheHoleValueRootIndex);
   __ Branch(miss, ne, scratch, Operand(at));
 }
 
 
-void NamedStoreHandlerCompiler::GenerateNegativeHolderLookup(
-    MacroAssembler* masm, Handle<JSObject> holder, Register holder_reg,
-    Handle<Name> name, Label* miss) {
-  if (holder->IsJSGlobalObject()) {
-    GenerateCheckPropertyCell(
-        masm, Handle<JSGlobalObject>::cast(holder), name, scratch1(), miss);
-  } else if (!holder->HasFastProperties() && !holder->IsJSGlobalProxy()) {
-    GenerateDictionaryNegativeLookup(
-        masm, miss, holder_reg, name, scratch1(), scratch2());
-  }
-}
-
-
 // Generate StoreTransition code, value is passed in a0 register.
 // After executing generated code, the receiver_reg and name_reg
 // may be clobbered.
 void NamedStoreHandlerCompiler::GenerateStoreTransition(
     MacroAssembler* masm, LookupResult* lookup, Handle<Map> transition,
     Handle<Name> name, Register receiver_reg, Register storage_reg,
     Register value_reg, Register scratch1, Register scratch2, Register scratch3,
     Label* miss_label, Label* slow) {
   // a0 : value.
   Label exit;
@@ skipping 817 matching lines @@
   // Do tail-call to the runtime system.
   ExternalReference store_ic_property = ExternalReference(
       IC_Utility(IC::kStorePropertyWithInterceptor), isolate());
   __ TailCallExternalReference(store_ic_property, 3, 1);
 
   // Return the generated code.
   return GetCode(kind(), Code::FAST, name);
 }
 
 
-Handle<Code> NamedLoadHandlerCompiler::CompileLoadNonexistent(
-    Handle<Name> name) {
-  NonexistentFrontend(name);
-
-  // Return undefined if maps of the full prototype chain is still the same.
-  __ LoadRoot(v0, Heap::kUndefinedValueRootIndex);
-  __ Ret();
-
-  // Return the generated code.
-  return GetCode(kind(), Code::FAST, name);
-}
-
-
 Register* PropertyAccessCompiler::load_calling_convention() {
   // receiver, name, scratch1, scratch2, scratch3, scratch4.
   Register receiver = LoadIC::ReceiverRegister();
   Register name = LoadIC::NameRegister();
   static Register registers[] = { receiver, name, a3, a0, t0, t1 };
   return registers;
 }
 
 
 Register* PropertyAccessCompiler::store_calling_convention() {
@@ skipping 213 matching lines @@
 
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS