[Interpreter] Support for operator new.

src/x64/interface-descriptors-x64.cc

Index: src/x64/interface-descriptors-x64.cc
diff --git a/src/x64/interface-descriptors-x64.cc b/src/x64/interface-descriptors-x64.cc
index c323a2d5dba402651aa3b47ffb5ffbe78e520e67..22490a89593f5ef00a17a5782f86080ec2b59ed7 100644
--- a/src/x64/interface-descriptors-x64.cc
+++ b/src/x64/interface-descriptors-x64.cc
@@ -388,8 +388,20 @@ void InterpreterPushArgsAndCallDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   Register registers[] = {
       rax,  // argument count (not including receiver)
+      rbx,  // address of first argument.
+      rdi   // the constructor.

[rmcilroy, 2015/10/13 14:07:30]

I don't think this change was intended?

[oth, 2015/10/14 08:40:09]

Done. Darn!

+  };
+  data->InitializePlatformSpecific(arraysize(registers), registers);
+}
+
+
+void InterpreterPushArgsAndConstructDescriptor::InitializePlatformSpecific(
+    CallInterfaceDescriptorData* data) {
+  Register registers[] = {
+      rax,  // argument count (not including receiver)
+      rdx,  // original constructor
+      rdi,  // constructor
       rbx,  // address of first argument
-      rdi   // the target callable to be call
   };
   data->InitializePlatformSpecific(arraysize(registers), registers);
 }