CallICStub belongs this "print(1)" because when we emit call in FullCodegen 
we call:
VisitCall -> EmitCallWithLoadIC -> CallLoadIC -> Call CallIC

On Wednesday, October 12, 2016 at 6:53:20 PM UTC+7, Ben Noordhuis wrote:
>
> On Wed, Oct 12, 2016 at 1:25 PM, Dmitriy - <dima...@gmail.com 
> <javascript:>> wrote: 
> > Hi, 
> > I try to run "print(1)" on d8 and I get following calls: 
> > 
> > (in runtime) 
> > ... -> LoadICStub -> CallICStub -> Builtin::Generate_Call -> ... -> 
> > Builtins::Generate_Adaptor 
> > 
> > I don't understand who and why calls Generate_Adaptor. 
>
> V8 generates an arguments adapter stack frame when you call a JS 
> function with more or fewer arguments than it expects. 
>
> print.length === 0 so print(1) needs an adapter frame, in theory. 
> It's a native function and those use a different calling convention so 
> I suspect that the CallIC in your example is something else; 
> --trace_ic should tell you. 
>

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