diff options
Diffstat (limited to 'src/corelib/tools/qsimd.cpp')
| -rw-r--r-- | src/corelib/tools/qsimd.cpp | 34 |
1 files changed, 25 insertions, 9 deletions
diff --git a/src/corelib/tools/qsimd.cpp b/src/corelib/tools/qsimd.cpp index f2caaaa538..9037442d9d 100644 --- a/src/corelib/tools/qsimd.cpp +++ b/src/corelib/tools/qsimd.cpp @@ -117,13 +117,7 @@ static inline quint64 detectProcessorFeatures() { quint64 features = 0; -#if defined(Q_OS_IOS) - features |= Q_UINT64_C(1) << CpuFeatureNEON; // On iOS, NEON is always available. -# ifdef Q_PROCESSOR_ARM_V8 - features |= Q_UINT64_C(1) << CpuFeatureCRC32; // On iOS, crc32 is always available if the architecture is Aarch32/64. -# endif - return features; -#elif defined(Q_OS_LINUX) +#if defined(Q_OS_LINUX) # if defined(Q_PROCESSOR_ARM_V8) && defined(Q_PROCESSOR_ARM_64) features |= Q_UINT64_C(1) << CpuFeatureNEON; // NEON is always available on ARMv8 64bit. # endif @@ -167,10 +161,10 @@ static inline quint64 detectProcessorFeatures() #endif #if defined(__ARM_NEON__) - features = Q_UINT64_C(1) << CpuFeatureNEON; + features |= Q_UINT64_C(1) << CpuFeatureNEON; #endif #if defined(__ARM_FEATURE_CRC32) - features = Q_UINT64_C(1) << CpuFeatureCRC32; + features |= Q_UINT64_C(1) << CpuFeatureCRC32; #endif return features; @@ -753,4 +747,26 @@ void qDumpCPUFeatures() puts(""); } +/*! + \internal + \fn T qUnalignedLoad(const void *ptr) + \since 5.6.1 + + Loads a \c{T} from address \a ptr, which may be misaligned. + + Use of this function avoid the undefined behavior that the C++ standard + otherwise attributes to unaligned loads. +*/ + +/*! + \internal + \fn void qUnalignedStore(void *ptr, T t) + \since 5.6.1 + + Stores \a t to address \a ptr, which may be misaligned. + + Use of this function avoid the undefined behavior that the C++ standard + otherwise attributes to unaligned stores. +*/ + QT_END_NAMESPACE |