Use a trampoline stub to load the type feedback vector for CallICs.

src/arm64/interface-descriptors-arm64.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_ARM64
 
 #include "src/interface-descriptors.h"
 
@@ skipping 134 matching lines @@
 void CallFunctionWithFeedbackDescriptor::Initialize(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {cp, x1, x3};
   Representation representations[] = {Representation::Tagged(),
                                       Representation::Tagged(),
                                       Representation::Smi()};
   data->Initialize(arraysize(registers), registers, representations);
 }
 
 
+void CallFunctionWithFeedbackAndVectorDescriptor::Initialize(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {cp, x1, x3, x2};
+  Representation representations[] = {
+      Representation::Tagged(), Representation::Tagged(), Representation::Smi(),
+      Representation::Tagged()};
+  data->Initialize(arraysize(registers), registers, representations);
+}
+
+
 void CallConstructDescriptor::Initialize(CallInterfaceDescriptorData* data) {
   // x0 : number of arguments
   // x1 : the function to call
   // x2 : feedback vector
   // x3 : slot in feedback vector (smi) (if r2 is not the megamorphic symbol)
   // TODO(turbofan): So far we don't gather type feedback and hence skip the
   // slot parameter, but ArrayConstructStub needs the vector to be undefined.
   Register registers[] = {cp, x0, x1, x2};
   data->Initialize(arraysize(registers), registers, NULL);
 }
@@ skipping 230 matching lines @@
       Representation::Tagged(),    // holder
       Representation::External(),  // api_function_address
   };
   data->Initialize(arraysize(registers), registers, representations,
                    &default_descriptor);
 }
 }
 }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64