[es6] Tail calls support.

src/ic/ic.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/ic/ic.h"
 
 #include "src/accessors.h"
 #include "src/api.h"
 #include "src/arguments.h"
 #include "src/base/bits.h"
@@ skipping 1544 matching lines @@
   LookupIterator it(object, name);
   if (FLAG_use_ic) UpdateCaches(&it, value, store_mode);
 
   MAYBE_RETURN_NULL(
       Object::SetProperty(&it, value, language_mode(), store_mode));
   return value;
 }
 
 
 Handle<Code> CallIC::initialize_stub(Isolate* isolate, int argc,
-                                     ConvertReceiverMode mode) {
-  CallICTrampolineStub stub(isolate, CallICState(argc, mode));
+                                     ConvertReceiverMode mode,
+                                     TailCallMode tail_call_mode) {
+  CallICTrampolineStub stub(isolate, CallICState(argc, mode, tail_call_mode));
   Handle<Code> code = stub.GetCode();
   return code;
 }
 
 
 Handle<Code> CallIC::initialize_stub_in_optimized_code(
-    Isolate* isolate, int argc, ConvertReceiverMode mode) {
-  CallICStub stub(isolate, CallICState(argc, mode));
+    Isolate* isolate, int argc, ConvertReceiverMode mode,
+    TailCallMode tail_call_mode) {
+  CallICStub stub(isolate, CallICState(argc, mode, tail_call_mode));
   Handle<Code> code = stub.GetCode();
   return code;
 }
 
 
 static Handle<Code> StoreICInitializeStubHelper(
     Isolate* isolate, ExtraICState extra_state,
     InlineCacheState initialization_state) {
   Handle<Code> ic = PropertyICCompiler::ComputeStore(
       isolate, initialization_state, extra_state);
@@ skipping 1384 matching lines @@
     KeyedLoadICNexus nexus(vector, vector_slot);
     KeyedLoadIC ic(IC::EXTRA_CALL_FRAME, isolate, &nexus);
     ic.UpdateState(receiver, key);
     ASSIGN_RETURN_FAILURE_ON_EXCEPTION(isolate, result, ic.Load(receiver, key));
   }
 
   return *result;
 }
 }  // namespace internal
 }  // namespace v8