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Andrei Golubev 08c70ca0cc QList/QString/QByteArray: no prepend optimized allocation when empty
Scoped prepend optimized allocation to only work when prepending into
a non-empty container. Otherwise, even appends would be considered
prepends since d.size == 0 when container is empty

This is, of course, not good for prepend cases but we prefer appends
over prepends. My proposal is to figure out what's the best strategy
based on use cases and performance measurements. For now, let's just
make sure appends are not additionally pessimized

Anyhow, this is an implementation detail and should not be considered
behavior change (at least not the one that is user noticeable)

Task-number: QTBUG-84320
Change-Id: Ibed616a2afa9bc24f78252f15a617bf92e2c6ea3
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-09-07 15:50:03 +02:00
.github/workflows GitHub Actions: Fix actions build 2020-08-14 21:40:28 +02:00
bin Windows: Avoid syncqt needlessly re-generating headers 2020-08-19 12:46:09 +02:00
cmake Remove /INCREMENTAL:YES from linker flags 2020-09-05 15:12:50 +00:00
coin CMake: Use CMAKE_AUTOGEN_VERBOSE to see moc invocations 2020-07-24 17:33:17 +02:00
config.tests CMake: Skip regeneration of manual compile test project 2020-04-09 11:26:46 +02:00
dist Remove last remainings of Qt Quick 1 imports 2020-05-25 11:48:12 +02:00
doc Doc: Fix documentation warnings for Qt GUI 2020-08-28 11:37:35 +02:00
examples Deliver Quit event when calling QCoreApplication::quit() 2020-09-07 14:41:16 +02:00
lib
mkspecs qmake: Do not pass -mthreads to Clang 2020-08-28 12:58:04 +03:00
qmake Use QList instead of QVector in qmake 2020-09-05 07:07:44 +02:00
src QList/QString/QByteArray: no prepend optimized allocation when empty 2020-09-07 15:50:03 +02:00
tests tst_qmenubar: stop doing math on an enum 2020-09-07 15:50:02 +02:00
util Round float->qfloat16 to even 2020-09-06 12:35:12 +02:00
.cmake.conf pro2cmake.py: Generate .cmake.conf files for versioning 2020-04-30 17:44:03 +00:00
.gitattributes
.gitignore Remove the QPF2 font engine 2020-08-24 07:08:45 +02:00
.lgtm.yml Skip LGTM analysis for the bootstrap library and tools 2020-07-16 01:04:34 +02:00
.prev_qt_cmdline.cmake CMake: Re-implement configure/qmake's command line handling in CMake 2020-08-17 08:08:20 +02:00
.qmake.conf Bump version 2020-02-02 13:41:14 +01:00
.tag
CMakeLists.txt CMake: Fix tst_moc to build when tests are built as part of Qt tree 2020-08-23 11:04:20 +02:00
INSTALL
LICENSE.FDL
LICENSE.GPL2
LICENSE.GPL3
LICENSE.GPL3-EXCEPT
LICENSE.LGPL3
LICENSE.LGPLv3
LICENSE.QT-LICENSE-AGREEMENT Update enterprise license agreement v4.2.1 2019-12-18 13:07:19 +02:00
config_help.txt Make -qtlibinfix affect the names of plugins by default 2020-07-13 20:30:18 +02:00
configure CMake: Fix configure -redo on Unix 2020-08-20 17:07:09 +02:00
configure.bat CMake: Fix top-level configure 2020-07-16 15:00:37 +02:00
configure.cmake CMake: Implement configure -gdb-index 2020-08-23 11:05:01 +02:00
configure.json Remove Qt 5.1 binary-compatibility warning 2020-08-18 12:55:38 +02:00
configure.pri Treat -xplatform or -device-option as being a cross compilation 2020-07-08 19:18:09 +02:00
dependencies.yaml Re-add dependencies.yaml so repos outside qt5 can be built with Coin 2019-09-19 17:07:36 +00:00
header.BSD
header.COMM
header.FDL
header.GPL
header.GPL-EXCEPT
header.LGPL
header.LGPL-NOGPL2
header.LGPL-ONLY
header.LGPL3
header.LGPL3-COMM
header.MIT
qt_cmdline.cmake CMake: Re-implement configure/qmake's command line handling in CMake 2020-08-17 08:08:20 +02:00
qtbase.pro Update qmake before building src 2020-08-19 18:25:51 +02:00
sync.profile Remove last remaining bits of QtPlatformHeaders 2020-08-04 07:12:32 +02:00