On Thursday, November 7, 2013 9:39:04 AM UTC-8, Ben Noordhuis wrote:
>
> On Thu, Nov 7, 2013 at 5:22 PM, dhruvbird <[email protected] <javascript:>> 
> wrote: 
> > I'm getting a lot of such lines printed with I run with --trace_opt 
> > --trace_deopt 
> > 1. What does it mean (simplified)? 
> > 2. Any idea how I can find out which operations are leading to this? 
> > 3. Also, the function name isn't printed, but a funny hex number is. 
> This is 
> > making it hard for me to understand which part of the code is causing 
> this 
> > issue. 
> > 
> > Thanks! 
> > -Dhruv. 
>
> V8 tries to hold off on optimizing a hot function until it has 
> determined that the types of arguments and variables in that function 
> are stable.  (For example, that x is always a number in the function 
> f(x) { return x * x }.) 
>
> That message you're seeing means that the profiler has figured out the 
> first half ('function is hot') but not yet the second half ('types are 
> stable'.) 
>

Okay, so is it possible that this is happening because different types are 
passed in to that function all the time? Will the optimizer not create 2 
different functions for each type passed in? I'm basically passing in 
multiple types to some functions, and those could be the ones that this 
trace is referring to (just a hunch). Is there any way to know which 
functions (on what line# in the code) this error is referring to?
 

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