qt-creator

Files

hjk 41046c0d44 LayoutBuilder: Initialize BuilderItem::apply more directly

Also, add some timing information.

Change-Id: I5d38cac9e7ad0afb24504ff521f31d5202268462
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>

2024-07-18 09:59:01 +00:00

CMakeLists.txt

2024-05-16 12:06:06 +00:00

lb.cpp

2024-07-17 14:43:38 +00:00

lb.h

2024-07-18 09:59:01 +00:00

main.cpp

2024-06-28 07:35:15 +00:00

README.md

2024-07-18 09:59:01 +00:00

This is an ad-hoc instruction count to judge the overhead imposed by Layoutbuilder for

Label ll {
    text("World")
};

(1) up to Label::Label (2) after new Label to up to doit() (3) tuple stuff in doit up to QLabel::setText parameter construction

With

BuilderItem(IdAndArg<Id, Arg> && idarg)
{
    apply = [&idarg](X *x) { doit(x, Id{}, idarg.arg); };
}


(1)   (2) + (3)    Sum

-O0 547 259 + 802 1608 -O2 24 23 47

With

BuilderItem(IdAndArg<Id, Arg> && idarg)
    : apply([&idarg](X *x) { doit(x, Id{}, idarg.arg); })
{}


(1)   (2) + (3)    Sum

-O2 5 23 28