diff options
| author | Thiago Macieira <thiago.macieira@intel.com> | 2018-11-02 19:38:29 -0700 |
|---|---|---|
| committer | Thiago Macieira <thiago.macieira@intel.com> | 2018-12-11 19:04:59 +0000 |
| commit | 40894d1a60d357bc46364ae038ede0159f32261b (patch) | |
| tree | 9aaf83d5aae8e0207916a35bfdc80590b3e9d929 /src/gui/painting/qdrawhelper_p.h | |
| parent | a440aada72f2ee78c5e27d70ecc79c0071673446 (diff) | |
Add AVX2 versions of qt_memfill32 and qt_memfill64
The implementation is almost the same 4-way-unrolled loop, but because
of the wider registers, we fill 128 bytes per loop. Unlike the SSE2
implementation, the AVX2 version uses unaligned stores and won't try to
align in the prologue, matching glibc's __memset_avx2 (also unaligned).
Change-Id: Iba4b5c183776497d8ee1fffd15637ccb2a7b83bc
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
Diffstat (limited to 'src/gui/painting/qdrawhelper_p.h')
| -rw-r--r-- | src/gui/painting/qdrawhelper_p.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/gui/painting/qdrawhelper_p.h b/src/gui/painting/qdrawhelper_p.h index 8a26d884a5..219734c430 100644 --- a/src/gui/painting/qdrawhelper_p.h +++ b/src/gui/painting/qdrawhelper_p.h @@ -167,8 +167,13 @@ extern DrawHelper qDrawHelper[QImage::NImageFormats]; void qBlendGradient(int count, const QSpan *spans, void *userData); void qBlendTexture(int count, const QSpan *spans, void *userData); +#ifdef __SSE2__ +extern void (*qt_memfill64)(quint64 *dest, quint64 value, qsizetype count); +extern void (*qt_memfill32)(quint32 *dest, quint32 value, qsizetype count); +#else extern void qt_memfill64(quint64 *dest, quint64 value, qsizetype count); extern void qt_memfill32(quint32 *dest, quint32 value, qsizetype count); +#endif extern void qt_memfill16(quint16 *dest, quint16 value, qsizetype count); typedef void (QT_FASTCALL *CompositionFunction)(uint *Q_DECL_RESTRICT dest, const uint *Q_DECL_RESTRICT src, int length, uint const_alpha); |