[Interpreter] Make dispatch table point to code entry instead of code objects.

src/compiler/linkage.h

Index: src/compiler/linkage.h
diff --git a/src/compiler/linkage.h b/src/compiler/linkage.h
index a0434f8afff6c2651bf8ac60e7f588c07bb77c28..d00fb4603b66a9f5a4f1f21e42a759646016a8a9 100644
--- a/src/compiler/linkage.h
+++ b/src/compiler/linkage.h
@@ -308,6 +308,7 @@ std::ostream& operator<<(std::ostream& os, const CallDescriptor::Kind& k);
 // Call[CodeStub]   code,       arg 1, arg 2, arg 3, [...],            context
 // Call[JSFunction] function,   rcvr,  arg 1, arg 2, [...], new, #arg, context
 // Call[Runtime]    CEntryStub, arg 1, arg 2, arg 3, [...], fun, #arg, context
+// Call[Dispatch]   code_entry, arg 1, arg 2, arg 3, [...],            context

[Benedikt Meurer, 2016/04/12 13:20:12]

Nit: s/Dispatch/Address ?

[rmcilroy, 2016/04/12 15:25:58]

Also BytecodeDispatch.

 class Linkage : public ZoneObject {
  public:
   explicit Linkage(CallDescriptor* incoming) : incoming_(incoming) {}
@@ -332,6 +333,10 @@ class Linkage : public ZoneObject {
       MachineType return_type = MachineType::AnyTagged(),
       size_t return_count = 1);
 
+  static CallDescriptor* GetDispatchCallDescriptor(
+      Isolate* isolate, Zone* zone, const CallInterfaceDescriptor& descriptor,
+      int stack_parameter_count);
+
   // Creates a call descriptor for simplified C calls that is appropriate
   // for the host platform. This simplified calling convention only supports
   // integers and pointers of one word size each, i.e. no floating point,