[es6] Reintroduce the instanceof operator in the backends.

src/full-codegen/ia32/full-codegen-ia32.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.
 
 #if V8_TARGET_ARCH_IA32
 
 #include "src/ast/scopes.h"
 #include "src/code-factory.h"
 #include "src/code-stubs.h"
 #include "src/codegen.h"
@@ skipping 3011 matching lines @@
 void FullCodeGenerator::EmitGetSuperConstructor(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   DCHECK_EQ(1, args->length());
   VisitForAccumulatorValue(args->at(0));
   __ AssertFunction(eax);
   __ mov(eax, FieldOperand(eax, HeapObject::kMapOffset));
   __ mov(eax, FieldOperand(eax, Map::kPrototypeOffset));
   context()->Plug(eax);
 }
 
-void FullCodeGenerator::EmitGetOrdinaryHasInstance(CallRuntime* expr) {
-  DCHECK_EQ(0, expr->arguments()->length());
-  __ mov(eax, NativeContextOperand());
-  __ mov(eax, ContextOperand(eax, Context::ORDINARY_HAS_INSTANCE_INDEX));
-  context()->Plug(eax);
-}
-
 void FullCodeGenerator::EmitDebugIsActive(CallRuntime* expr) {
   DCHECK(expr->arguments()->length() == 0);
   ExternalReference debug_is_active =
       ExternalReference::debug_is_active_address(isolate());
   __ movzx_b(eax, Operand::StaticVariable(debug_is_active));
   __ SmiTag(eax);
   context()->Plug(eax);
 }
 
 
@@ skipping 780 matching lines @@
       isolate->builtins()->OnStackReplacement()->entry(),
       Assembler::target_address_at(call_target_address, unoptimized_code));
   return ON_STACK_REPLACEMENT;
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_IA32