[interpreter] Create custom call opcodes for specific argument counts

src/interpreter/interpreter.h

Index: src/interpreter/interpreter.h
diff --git a/src/interpreter/interpreter.h b/src/interpreter/interpreter.h
index ac36815f14f5e052dcba1d9202619f1e8e3d22db..aa8f8ad28dddd6b150c9a0fd381cc68000bbd231 100644
--- a/src/interpreter/interpreter.h
+++ b/src/interpreter/interpreter.h
@@ -124,6 +124,9 @@ class Interpreter {
   // Generates code to perform a JS call that collects type feedback.
   void DoJSCall(InterpreterAssembler* assembler, TailCallMode tail_call_mode);
 
+  // Generates code to perform a JS call that collects type feedback.

[rmcilroy, 2017/02/17 11:37:19]

nit - JS call with a known number of arguments...

[danno, 2017/02/17 17:18:43]

Done.

+  void DoJSCallN(InterpreterAssembler* assembler, int n);
+
   // Generates code to perform delete via function_id.
   void DoDelete(Runtime::FunctionId function_id,
                 InterpreterAssembler* assembler);