[stubs] Add missing interface descriptor for the CompareIC.

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 1ca0c858778f0acc96b5cb5d509460449f7f4c48..0cef86e1021070a826381b2a4358ace7817425a2 100644
--- a/src/x64/interface-descriptors-x64.cc
+++ b/src/x64/interface-descriptors-x64.cc
@@ -229,6 +229,12 @@ void InternalArrayConstructorDescriptor::Initialize(
 }
 
 
+void CompareDescriptor::Initialize(CallInterfaceDescriptorData* data) {
+  Register registers[] = {rsi, rdx, rax};
+  data->Initialize(arraysize(registers), registers, NULL);
+}
+
+
 void CompareNilDescriptor::Initialize(CallInterfaceDescriptorData* data) {
   Register registers[] = {rsi, rax};
   data->Initialize(arraysize(registers), registers, NULL);