Provide call counts for constructor calls, surface them as a vector IC.

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/arm64/interface-descriptors-arm64.h"
 
 #if V8_TARGET_ARCH_ARM64
 
 #include "src/interface-descriptors.h"
 
@@ skipping 191 matching lines @@
 }
 
 
 void CallFunctionWithFeedbackAndVectorDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {x1, x3, x2};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
-void CallConstructDescriptor::InitializePlatformSpecific(
+void ConstructDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // x0 : number of arguments
   // x1 : the function to call
   // x2 : feedback vector
   // x3 : slot in feedback vector (Smi, for RecordCallTarget)
-  // x4 : new target (for IsSuperConstructorCall)
   // 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[] = {x0, x1, x4, x2};
+  Register registers[] = {x0, x1, x3, x3};
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 void CallTrampolineDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // x1: target
   // x0: number of arguments
   Register registers[] = {x1, x0};
   data->InitializePlatformSpecific(arraysize(registers), registers);
@@ skipping 270 matching lines @@
       x1    // the runtime function to call
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_ARM64