[Interpreter] Implements calls through CallICStub in the interpreter.

src/ic/ic-state.h

Index: src/ic/ic-state.h
diff --git a/src/ic/ic-state.h b/src/ic/ic-state.h
index f4ed8ac79ca85a01bd2cbc0ca86163851fbb3bf1..de66947d2e024aee77c924b985d1083113225b9e 100644
--- a/src/ic/ic-state.h
+++ b/src/ic/ic-state.h
@@ -26,10 +26,11 @@ class CallICState final BASE_EMBEDDED {
   explicit CallICState(ExtraICState extra_ic_state)
       : bit_field_(extra_ic_state) {}
   CallICState(int argc, ConvertReceiverMode convert_mode,
-              TailCallMode tail_call_mode)
+              TailCallMode tail_call_mode, bool is_argc_in_reg = false)
       : bit_field_(ArgcBits::encode(argc) |
                    ConvertModeBits::encode(convert_mode) |
-                   TailCallModeBits::encode(tail_call_mode)) {}
+                   TailCallModeBits::encode(tail_call_mode) |
+                   ArgcInRegBits::encode(is_argc_in_reg)) {}
 
   ExtraICState GetExtraICState() const { return bit_field_; }
 
@@ -44,11 +45,13 @@ class CallICState final BASE_EMBEDDED {
   TailCallMode tail_call_mode() const {
     return TailCallModeBits::decode(bit_field_);
   }
+  bool argc_in_register() { return ArgcInRegBits::decode(bit_field_); }
 
  private:
   typedef BitField<int, 0, Code::kArgumentsBits> ArgcBits;
   typedef BitField<ConvertReceiverMode, ArgcBits::kNext, 2> ConvertModeBits;
   typedef BitField<TailCallMode, ConvertModeBits::kNext, 1> TailCallModeBits;
+  typedef BitField<bool, TailCallModeBits::kNext, 1> ArgcInRegBits;
 
   int const bit_field_;
 };