diff options
| author | Thiago Macieira <thiago.macieira@intel.com> | 2017-11-16 11:02:09 -0800 |
|---|---|---|
| committer | Thiago Macieira <thiago.macieira@intel.com> | 2018-05-05 06:20:04 +0000 |
| commit | 6e1190053d28877b2e90375056735429525e2ee7 (patch) | |
| tree | a95b35478f8f008cabfab0ee112c3966852858a8 /src/corelib/tools | |
| parent | 2f9d49630d1b250bd8c9bb1202dc113fbb3cb20a (diff) | |
qsimd: remove support for systems without 64-bit atomics
We had that as a concession for early toolchains that failed to include
the necessary libraries. They must now be up-to-date.
Change-Id: I938b024e38bf4aac9154fffd14f7a630ef160cd5
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Diffstat (limited to 'src/corelib/tools')
| -rw-r--r-- | src/corelib/tools/qsimd.cpp | 7 | ||||
| -rw-r--r-- | src/corelib/tools/qsimd_p.h | 17 |
2 files changed, 7 insertions, 17 deletions
diff --git a/src/corelib/tools/qsimd.cpp b/src/corelib/tools/qsimd.cpp index 25340f2d02..c4d7117449 100644 --- a/src/corelib/tools/qsimd.cpp +++ b/src/corelib/tools/qsimd.cpp @@ -644,11 +644,7 @@ static const int features_count = (sizeof features_indices) / (sizeof features_i // record what CPU features were enabled by default in this Qt build static const quint64 minFeature = qCompilerCpuFeatures; -#ifdef Q_ATOMIC_INT64_IS_SUPPORTED Q_CORE_EXPORT QBasicAtomicInteger<quint64> qt_cpu_features[1] = { Q_BASIC_ATOMIC_INITIALIZER(0) }; -#else -Q_CORE_EXPORT QBasicAtomicInteger<unsigned> qt_cpu_features[2] = { Q_BASIC_ATOMIC_INITIALIZER(0), Q_BASIC_ATOMIC_INITIALIZER(0) }; -#endif void qDetectCpuFeatures() { @@ -681,9 +677,6 @@ void qDetectCpuFeatures() } qt_cpu_features[0].store(f | quint32(QSimdInitialized)); -#ifndef Q_ATOMIC_INT64_IS_SUPPORTED - qt_cpu_features[1].store(f >> 32); -#endif } void qDumpCPUFeatures() diff --git a/src/corelib/tools/qsimd_p.h b/src/corelib/tools/qsimd_p.h index 18684caefb..3161ee7412 100644 --- a/src/corelib/tools/qsimd_p.h +++ b/src/corelib/tools/qsimd_p.h @@ -435,29 +435,26 @@ static const quint64 qCompilerCpuFeatures = 0 #endif ; -#ifdef Q_ATOMIC_INT64_IS_SUPPORTED -extern Q_CORE_EXPORT QBasicAtomicInteger<quint64> qt_cpu_features[1]; +#ifdef QT_BOOTSTRAPPED +static inline quint64 qCpuFeatures() +{ + return QSimdInitialized; +} #else -extern Q_CORE_EXPORT QBasicAtomicInteger<unsigned> qt_cpu_features[2]; -#endif +extern Q_CORE_EXPORT QBasicAtomicInteger<quint64> qt_cpu_features[1]; Q_CORE_EXPORT void qDetectCpuFeatures(); static inline quint64 qCpuFeatures() { quint64 features = qt_cpu_features[0].load(); -#ifndef Q_ATOMIC_INT64_IS_SUPPORTED - features |= quint64(qt_cpu_features[1].load()) << 32; -#endif if (Q_UNLIKELY(features == 0)) { qDetectCpuFeatures(); features = qt_cpu_features[0].load(); -#ifndef Q_ATOMIC_INT64_IS_SUPPORTED - features |= quint64(qt_cpu_features[1].load()) << 32; -#endif Q_ASSUME(features != 0); } return features; } +#endif #define qCpuHasFeature(feature) ((qCompilerCpuFeatures & (Q_UINT64_C(1) << CpuFeature ## feature)) \ || (qCpuFeatures() & (Q_UINT64_C(1) << CpuFeature ## feature))) |