[Development] Qt 5.9's new garbage collector documentation? + root_ptr

[Phil Bouchard]

On 07/12/2017 10:28 PM, Thiago Macieira wrote:
> On quarta-feira, 12 de julho de 2017 12:34:35 PDT Phil Bouchard wrote:
>> I don't know about you but a minimalist version of g++ embedded inside the
>> browser could be beneficial big time.
>
> Such a thing exists, it's called JIT.

I was reading the Wiki page:
https://en.wikipedia.org/wiki/Just-in-time_compilation

And it says:
"thus in theory JIT compilation can yield faster execution than static 
compilation"

But in practice a g++ compilation sequence followed by execution still 
is 1.8 times faster in the aforementioned test.  Maybe if you have 
pieces of code that are never executed then JIT would have a lead but 
serious/game engines for example stresses 100% of the code as far as I know.

The problem with JIT is its support also.  You need an army of coders to 
support the conversion from bytecode to assembly language, updates, etc.

Anyway I'm deviating from QNodePtr but I just don't understand the hype 
about JIT when it doesn't seem it has been compared to a Javascript 
compiler because none exists up to now.

> There's also a tool to precompile a QML file. You should compare to that.

I know QML files can be compiled but I think the Qt Quick Compiler is 
being replaced by something else right now.  I'll have to investigate.


-Phil