diff options
Diffstat (limited to 'src/corelib/tools/qsimd_p.h')
| -rw-r--r-- | src/corelib/tools/qsimd_p.h | 63 |
1 files changed, 60 insertions, 3 deletions
diff --git a/src/corelib/tools/qsimd_p.h b/src/corelib/tools/qsimd_p.h index 0cc6bf4b76..ce9c7b789f 100644 --- a/src/corelib/tools/qsimd_p.h +++ b/src/corelib/tools/qsimd_p.h @@ -43,6 +43,7 @@ #define QSIMD_P_H #include <qglobal.h> +#include <qatomic.h> QT_BEGIN_HEADER @@ -172,7 +173,6 @@ QT_BEGIN_NAMESPACE enum CPUFeatures { - None = 0, IWMMXT = 0x1, NEON = 0x2, SSE2 = 0x4, @@ -183,10 +183,67 @@ enum CPUFeatures { AVX = 0x80, AVX2 = 0x100, HLE = 0x200, - RTM = 0x400 + RTM = 0x400, + + // used only to indicate that the CPU detection was initialised + QSimdInitialized = 0x80000000 }; -Q_CORE_EXPORT uint qDetectCPUFeatures(); +static const uint qCompilerCpuFeatures = 0 +#if defined __RTM__ + | RTM +#endif +#if defined __HLE__ + | HLE +#endif +#if defined __AVX2__ + | AVX2 +#endif +#if defined __AVX__ + | AVX +#endif +#if defined __SSE4_2__ + | SSE4_2 +#endif +#if defined __SSE4_1__ + | SSE4_1 +#endif +#if defined __SSSE3__ + | SSSE3 +#endif +#if defined __SSE3__ + | SSE3 +#endif +#if defined __SSE2__ + | SSE2 +#endif +#if defined __ARM_NEON__ + | NEON +#endif +#if defined __IWMMXT__ + | IWMMXT +#endif + ; + + +extern Q_CORE_EXPORT QBasicAtomicInt qt_cpu_features; +Q_CORE_EXPORT void qDetectCpuFeatures(); + +inline uint qCpuFeatures() +{ + int features = qt_cpu_features.load(); + if (Q_UNLIKELY(features == 0)) { + qDetectCpuFeatures(); + features = qt_cpu_features.load(); + Q_ASSUME(features != 0); + } + return uint(features); +} + +inline uint qCpuHasFeature(CPUFeatures feature) +{ + return qCompilerCpuFeatures & feature || qCpuFeatures() & feature; +} #define ALIGNMENT_PROLOGUE_16BYTES(ptr, i, length) \ |