diff options
| author | Allan Sandfeld Jensen <allan.jensen@digia.com> | 2016-12-12 23:53:22 +0100 |
|---|---|---|
| committer | Jani Heikkinen <jani.heikkinen@qt.io> | 2016-12-13 05:14:32 +0000 |
| commit | bb0f29f82b934b489f1679b7b72f094aa287be3c (patch) | |
| tree | d5261b8283dfa5383509628373d9e125eb040f57 /src | |
| parent | 4c0760d327e390a37d0d6ce2016d3a8c5b87a119 (diff) | |
Fix gcc 6.4 builds
The builtins clzs and ctzs have been removed. Additionally they were
never proper internal GCC builtins and shouldn't have been used in a
constexpr function in the first place. This patch removes the assumption
that they exist when BMI is available, and let GCC fall back to using
__builtin_clz and __builtin_ctz.
Change-Id: I3e0b4e246098bb9ce6ede28b311948260ef881b9
Task-number: QTBUG-56813
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/corelib/tools/qalgorithms.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/corelib/tools/qalgorithms.h b/src/corelib/tools/qalgorithms.h index 303374b06d..51f73c3368 100644 --- a/src/corelib/tools/qalgorithms.h +++ b/src/corelib/tools/qalgorithms.h @@ -535,7 +535,7 @@ QT_DEPRECATED_X("Use std::binary_search") Q_OUTOFLINE_TEMPLATE RandomAccessItera # define QT_HAS_BUILTIN_CTZS Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_ctzs(quint16 v) Q_DECL_NOTHROW { -# if QT_HAS_BUILTIN(__builtin_ctzs) || defined(__BMI__) +# if QT_HAS_BUILTIN(__builtin_ctzs) return __builtin_ctzs(v); # else return __builtin_ctz(v); @@ -544,7 +544,7 @@ Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_ctzs(quint16 v) Q_DECL_NOTHROW #define QT_HAS_BUILTIN_CLZS Q_DECL_CONSTEXPR Q_ALWAYS_INLINE uint qt_builtin_clzs(quint16 v) Q_DECL_NOTHROW { -# if QT_HAS_BUILTIN(__builtin_clzs) || defined(__BMI__) +# if QT_HAS_BUILTIN(__builtin_clzs) return __builtin_clzs(v); # else return __builtin_clz(v) - 16U; |