Remove unused StubType's, freeing 2 bits in Code objects.

src/arm/stub-cache-arm.cc

 // Copyright 2012 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 1632 matching lines @@
   GenerateFastPropertyLoad(masm(), r1, reg, index.is_inobject(holder),
                            index.translate(holder), Representation::Tagged());
 
   GenerateCallFunction(masm(), object, arguments(), &miss, extra_state_);
 
   // Handle call cache miss.
   __ bind(&miss);
   GenerateMissBranch();
 
   // Return the generated code.
-  return GetCode(Code::FIELD, name);
+  return GetCode(Code::FAST, name);
 }
 
 
 Handle<Code> CallStubCompiler::CompileArrayCodeCall(
     Handle<Object> object,
     Handle<JSObject> holder,
     Handle<Cell> cell,
     Handle<JSFunction> function,
     Handle<String> name,
     Code::StubType type) {
@@ skipping 1010 matching lines @@
 Handle<Code> CallStubCompiler::CompileCallConstant(
     Handle<Object> object,
     Handle<JSObject> holder,
     Handle<Name> name,
     CheckType check,
     Handle<JSFunction> function) {
   if (HasCustomCallGenerator(function)) {
     Handle<Code> code = CompileCustomCall(object, holder,
                                           Handle<Cell>::null(),
                                           function, Handle<String>::cast(name),
-                                          Code::CONSTANT);
+                                          Code::FAST);
     // A null handle means bail out to the regular compiler code below.
     if (!code.is_null()) return code;
   }
 
   CompileHandlerFrontend(object, holder, name, check);
   CompileHandlerBackend(function);
 
   // Return the generated code.
   return GetCode(function);
 }
@@ skipping 26 matching lines @@
   // Restore receiver.
   __ ldr(r0, MemOperand(sp, argc * kPointerSize));
 
   GenerateCallFunction(masm(), object, arguments(), &miss, extra_state_);
 
   // Handle call cache miss.
   __ bind(&miss);
   GenerateMissBranch();
 
   // Return the generated code.
-  return GetCode(Code::INTERCEPTOR, name);
+  return GetCode(Code::FAST, name);
 }
 
 
 Handle<Code> CallStubCompiler::CompileCallGlobal(
     Handle<JSObject> object,
     Handle<GlobalObject> holder,
     Handle<PropertyCell> cell,
     Handle<JSFunction> function,
     Handle<Name> name) {
   // ----------- S t a t e -------------
@@ skipping 65 matching lines @@
   __ push(ip);
   __ mov(ip, Operand(name));
   __ Push(ip, value());
 
   // Do tail-call to the runtime system.
   ExternalReference store_callback_property =
       ExternalReference(IC_Utility(IC::kStoreCallbackProperty), isolate());
   __ TailCallExternalReference(store_callback_property, 4, 1);
 
   // Return the generated code.
-  return GetCode(kind(), Code::CALLBACKS, name);
+  return GetCode(kind(), Code::FAST, name);
 }
 
 
 Handle<Code> StoreStubCompiler::CompileStoreCallback(
     Handle<JSObject> object,
     Handle<JSObject> holder,
     Handle<Name> name,
     const CallOptimization& call_optimization) {
   HandlerFrontend(object, receiver(), holder, name);
 
   Register values[] = { value() };
   GenerateFastApiCall(
       masm(), call_optimization, receiver(), scratch3(), 1, values);
 
   // Return the generated code.
-  return GetCode(kind(), Code::CALLBACKS, name);
+  return GetCode(kind(), Code::FAST, name);
 }
 
 
 #undef __
 #define __ ACCESS_MASM(masm)
 
 
 void StoreStubCompiler::GenerateStoreViaSetter(
     MacroAssembler* masm,
     Handle<JSFunction> setter) {
@@ skipping 62 matching lines @@
   // Do tail-call to the runtime system.
   ExternalReference store_ic_property =
       ExternalReference(IC_Utility(IC::kStoreInterceptorProperty), isolate());
   __ TailCallExternalReference(store_ic_property, 4, 1);
 
   // Handle store cache miss.
   __ bind(&miss);
   TailCallBuiltin(masm(), MissBuiltin(kind()));
 
   // Return the generated code.
-  return GetCode(kind(), Code::INTERCEPTOR, name);
+  return GetCode(kind(), Code::FAST, name);
 }
 
 
 Handle<Code> LoadStubCompiler::CompileLoadNonexistent(
     Handle<Object> object,
     Handle<JSObject> last,
     Handle<Name> name,
     Handle<JSGlobalObject> global) {
   NonexistentHandlerFrontend(object, last, name, global);
 
   // Return undefined if maps of the full prototype chain are still the
   // same and no global property with this name contains a value.
   __ LoadRoot(r0, Heap::kUndefinedValueRootIndex);
   __ Ret();
 
   // Return the generated code.
-  return GetCode(kind(), Code::NONEXISTENT, name);
+  return GetCode(kind(), Code::FAST, name);
 }
 
 
 Register* LoadStubCompiler::registers() {
   // receiver, name, scratch1, scratch2, scratch3, scratch4.
   static Register registers[] = { r0, r2, r3, r1, r4, r5 };
   return registers;
 }
 
 
@@ skipping 228 matching lines @@
   // -----------------------------------
   TailCallBuiltin(masm, Builtins::kKeyedLoadIC_Miss);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM