WIP: Implement ES6 Spread-calls

src/ic/ic-state.h

 // 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.
 
 #ifndef V8_IC_STATE_H_
 #define V8_IC_STATE_H_
 
 #include "src/macro-assembler.h"
 
 namespace v8 {
@@ skipping 10 matching lines @@
                     ConstantPoolArray* constant_pool);
 };
 
 
 class CallICState FINAL BASE_EMBEDDED {
  public:
   explicit CallICState(ExtraICState extra_ic_state);
 
   enum CallType { METHOD, FUNCTION };
 
-  CallICState(int argc, CallType call_type)
-      : argc_(argc), call_type_(call_type) {}
+  CallICState(int argc, CallType call_type, bool is_spread = false)
+      : argc_(argc), call_type_(call_type), is_spread_(is_spread) {}
 
   ExtraICState GetExtraICState() const;
 
   static void GenerateAheadOfTime(Isolate*,
                                   void (*Generate)(Isolate*,
                                                    const CallICState&));
 
   int arg_count() const { return argc_; }
   CallType call_type() const { return call_type_; }
+  bool is_spread() const { return is_spread_; }
 
   bool CallAsMethod() const { return call_type_ == METHOD; }
 
  private:
   class ArgcBits : public BitField<int, 0, Code::kArgumentsBits> {};
   class CallTypeBits : public BitField<CallType, Code::kArgumentsBits, 1> {};
+  class IsSpreadBits : public BitField<bool, CallTypeBits::kNext, 1> {};
 
   const int argc_;
   const CallType call_type_;
+  const bool is_spread_;
 };
 
 
 std::ostream& operator<<(std::ostream& os, const CallICState& s);
 
 
 class BinaryOpICState FINAL BASE_EMBEDDED {
  public:
   BinaryOpICState(Isolate* isolate, ExtraICState extra_ic_state);
 
@@ skipping 153 matching lines @@
  private:
   class ContextualModeBits : public BitField<ContextualMode, 0, 1> {};
   STATIC_ASSERT(static_cast<int>(NOT_CONTEXTUAL) == 0);
 
   const ExtraICState state_;
 };
 }
 }
 
 #endif  // V8_IC_STATE_H_