PPC/S390: [es6] Reintroduce the instanceof operator in the backends.

src/crankshaft/s390/lithium-s390.cc

 // Copyright 2014 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/crankshaft/s390/lithium-s390.h"
 
 #include <sstream>
 
 #include "src/crankshaft/hydrogen-osr.h"
 #include "src/crankshaft/lithium-inl.h"
@@ skipping 847 matching lines @@
   info()->MarkAsRequiresFrame();
   LOperand* value = UseRegister(instr->value());
   return DefineAsRegister(new (zone()) LArgumentsLength(value));
 }
 
 LInstruction* LChunkBuilder::DoArgumentsElements(HArgumentsElements* elems) {
   info()->MarkAsRequiresFrame();
   return DefineAsRegister(new (zone()) LArgumentsElements);
 }
 
-LInstruction* LChunkBuilder::DoInstanceOf(HInstanceOf* instr) {
-  LOperand* left =
-      UseFixed(instr->left(), InstanceOfDescriptor::LeftRegister());
-  LOperand* right =
-      UseFixed(instr->right(), InstanceOfDescriptor::RightRegister());
-  LOperand* context = UseFixed(instr->context(), cp);
-  LInstanceOf* result = new (zone()) LInstanceOf(context, left, right);
-  return MarkAsCall(DefineFixed(result, r2), instr);
-}
-
 LInstruction* LChunkBuilder::DoHasInPrototypeChainAndBranch(
     HHasInPrototypeChainAndBranch* instr) {
   LOperand* object = UseRegister(instr->object());
   LOperand* prototype = UseRegister(instr->prototype());
   LHasInPrototypeChainAndBranch* result =
       new (zone()) LHasInPrototypeChainAndBranch(object, prototype);
   return AssignEnvironment(result);
 }
 
 LInstruction* LChunkBuilder::DoWrapReceiver(HWrapReceiver* instr) {
@@ skipping 1398 matching lines @@
 LInstruction* LChunkBuilder::DoLoadFieldByIndex(HLoadFieldByIndex* instr) {
   LOperand* object = UseRegister(instr->object());
   LOperand* index = UseTempRegister(instr->index());
   LLoadFieldByIndex* load = new (zone()) LLoadFieldByIndex(object, index);
   LInstruction* result = DefineSameAsFirst(load);
   return AssignPointerMap(result);
 }
 
 }  // namespace internal
 }  // namespace v8