From f29566c5a41c127eacaf13f3dbfe4624e55bc83f Mon Sep 17 00:00:00 2001 From: Marc Mutz Date: Tue, 18 Jan 2022 17:38:48 +0100 Subject: Prevent repeated instantiations of some qRegisterNormalizedMetaType<>s [1/N] (QtGui) Create macros that wrap the magic developed in 7d63efc16f65f98c657caa90e0d7e9b72a879ade and apply it to all Q_DECLARE_METATYPE invocations that show up in Clang -ftime-trace for a PCH'ed QtGui build. Effects on compile times: Clang 10 -ftme-trace: $ ClangBuildAnalyzer --analyze qtgui-before.trace | head -n6 Analyzing build trace from 'qtgui-before.trace'... **** Time summary: Compilation (523 times): Parsing (frontend): 628.3 s Codegen & opts (backend): 304.5 s $ ClangBuildAnalyzer --analyze qtgui-after.trace | head -n6 Analyzing build trace from 'qtgui-after.trace'... **** Time summary: Compilation (523 times): Parsing (frontend): 546.0 s Codegen & opts (backend): 304.4 s GCC 11 time (bash builtin): before: $ time for ((i=0; i < 3; ++i)) do touch src/gui/painting/qpolygon.h ; ninja libQt6Gui.so; done real 4m13,539s user 49m24,416s sys 3m18,177s after: $ time for ((i=0; i < 3; ++i)) do touch src/gui/painting/qpolygon.h ; ninja libQt6Gui.so; done real 3m55,697s user 45m19,941s sys 3m7,370s Task-number: QTBUG-97601 Pick-to: 6.3 Change-Id: Ia8e37a58937568a7ed21cfeb4b27274deca4d53b Reviewed-by: Fabian Kosmale --- src/corelib/itemmodels/qitemselectionmodel.cpp | 3 +++ 1 file changed, 3 insertions(+) (limited to 'src/corelib/itemmodels/qitemselectionmodel.cpp') diff --git a/src/corelib/itemmodels/qitemselectionmodel.cpp b/src/corelib/itemmodels/qitemselectionmodel.cpp index f144bf9357..286a57eb3e 100644 --- a/src/corelib/itemmodels/qitemselectionmodel.cpp +++ b/src/corelib/itemmodels/qitemselectionmodel.cpp @@ -50,6 +50,9 @@ QT_BEGIN_NAMESPACE +QT_IMPL_METATYPE_EXTERN(QItemSelectionRange) +QT_IMPL_METATYPE_EXTERN(QItemSelection) + /*! \class QItemSelectionRange \inmodule QtCore -- cgit v1.2.3