Actually I was less interested in the compilation time than what it is the return for the investment.
Reading the compiler docs, they recommend disabling the compilation for debug builds, as it can interfere with debugging. So through configure the build/deploy cycle should stay the same for debug builds. Of course in reality you will need to do a couple of rounds of testing with release builds as well. But nobody has mentioned any figures on the speed gains resulting from using the compiler. A related question, has anyone tried to coax QML, or rather the javascript components through the Closure Compiler? https://developers.google.com/speed/articles/compressing-javascript It might help a little, especially with javascript heavy QML, as it would reduce the working set size / cache misses, etc. Idle thoughts, Harri On 14/11/2014 13:24, rpzrpz...@gmail.com wrote: > Then that would make the benchmarks that Harri requested a mute point. > > Unless you "make clean", the incremental build would not care about > 10,000 lines of QML code. It would only "slow" down on the changed QML. > > Is there an option to turn off the Quick Compiler for beta builds and > only kick it on during release? > > md > > > On 11/14/2014 3:01 AM, Portale Alessandro wrote: >> According to a quick test I did just now, with Qt 5.4-beta (Qt Quick >> Compiler 2.0) on msvc2013, it only re-compiles the changed qml files. >> >> Best regards, >> Alessandro Portale >> ________________________________________ >> Betreff: Re: [Interest] Qt Quick Compiler >> >> Does the quick compiler only re-compile those QML files that were >> changed or does it re-compile ALL QML every time regardless of changes >> to the QML files or not? >> >> On 11/13/2014 8:10 PM, Yang Fan wrote: >>> I have not test the running improvement. But I can tell you that it slow >>> down the build process significantly if you have many QML files. Every >>> QML file will be converted to a cpp file which will be compiled, you >>> know the C++ compiler is very slow. >>> >>> On Thu, Nov 13, 2014 at 11:42 PM, Harri Pasanen <ha...@mpaja.com >>> <mailto:ha...@mpaja.com>> wrote: >>> >>> Hi, >>> >>> Are there benchmarks on how much start-up time is improved with the Qt >>> Quick compiler? >>> Say I have 10000 lines of QML on Android, any idea how many percent >>> gets >>> shaved off the start-up time? >>> >>> Is the improvement identical across platforms, iOS, Android, desktop >>> ...? >>> Is the compiler itself fast, will it slow down the build/deploy cycle >>> significantly? >>> >>> >>> >>> Curious, >>> >>> Harri >>> >>> >>> >>> _______________________________________________ >>> Interest mailing list >>> Interest@qt-project.org <mailto:Interest@qt-project.org> >>> http://lists.qt-project.org/mailman/listinfo/interest >>> >>> >>> >>> >>> -- >>> Regards, >>> Fan Yang >>> >>> >>> _______________________________________________ >>> Interest mailing list >>> Interest@qt-project.org >>> http://lists.qt-project.org/mailman/listinfo/interest >>> >> _______________________________________________ >> Interest mailing list >> Interest@qt-project.org >> http://lists.qt-project.org/mailman/listinfo/interest >> _______________________________________________ >> Interest mailing list >> Interest@qt-project.org >> http://lists.qt-project.org/mailman/listinfo/interest >> > > _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
