diff options
| author | Thiago Macieira <thiago.macieira@intel.com> | 2011-12-31 00:15:06 -0200 |
|---|---|---|
| committer | Qt by Nokia <qt-info@nokia.com> | 2012-03-24 19:07:22 +0100 |
| commit | ad81f75429f6c5586d667880f90f4a425f1ce968 (patch) | |
| tree | 543600f4a8d20c8be210a0008cc5ab4dd4116148 /src/corelib/global/qglobal.h | |
| parent | 4131c323a36ee8680a3b4d66a2a03a00544751c2 (diff) | |
Add macros for assuming and unreachable code
Use these macros to tell the compiler about conditions that may
happen, so it will generate better code. But do not assume that they
will do anything special.
Change-Id: I89ec4f65f48a9340ccf5ffc4ae4b8c3d8897c8b1
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Diffstat (limited to 'src/corelib/global/qglobal.h')
| -rw-r--r-- | src/corelib/global/qglobal.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/corelib/global/qglobal.h b/src/corelib/global/qglobal.h index 734177638c..7d91fa3ca9 100644 --- a/src/corelib/global/qglobal.h +++ b/src/corelib/global/qglobal.h @@ -163,6 +163,12 @@ namespace QT_NAMESPACE {} #ifndef Q_UNLIKELY # define Q_UNLIKELY(x) (x) #endif +#ifndef Q_ASSUME +# define Q_ASSUME(expr) +#endif +#ifndef Q_UNREACHABLE +# define Q_UNREACHABLE() +#endif #ifndef Q_ALLOC_SIZE # define Q_ALLOC_SIZE(x) |