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| author | Benjamin Poulain <benjamin.poulain@nokia.com> | 2010-02-23 16:06:41 (GMT) |
|---|---|---|
| committer | Benjamin Poulain <benjamin.poulain@nokia.com> | 2010-02-23 17:06:30 (GMT) |
| commit | 60fd302e8d88b92ade59d68872c99310128c3a6c (patch) | |
| tree | 870288ddc921f1fb68178b8d17200abeb46545d9 /src/corelib/tools/qsimd_p.h | |
| parent | d7181ae996f9add10bf4e956ddbedff99cb19378 (diff) | |
| download | Qt-60fd302e8d88b92ade59d68872c99310128c3a6c.zip Qt-60fd302e8d88b92ade59d68872c99310128c3a6c.tar.gz Qt-60fd302e8d88b92ade59d68872c99310128c3a6c.tar.bz2 | |
Implement QString::fromLatin1_helper() with SSE2
When there is at least 16 characters, use SSE2 to convert
from 8bits to 16 bits.
Reviewed-by: Samuel Rødal
Reveiwed-by: Thiago Macieira
Diffstat (limited to 'src/corelib/tools/qsimd_p.h')
| -rw-r--r-- | src/corelib/tools/qsimd_p.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/corelib/tools/qsimd_p.h b/src/corelib/tools/qsimd_p.h index d535762..d0a057e 100644 --- a/src/corelib/tools/qsimd_p.h +++ b/src/corelib/tools/qsimd_p.h @@ -60,6 +60,15 @@ QT_MODULE(Core) #undef QT_HAVE_MMX #endif + +#if defined(__x86_64__) || defined(Q_OS_WIN64) || defined(__ia64__) || defined(__SSE2__) +#if defined(QT_HAVE_SSE2) +// Defined for small fast functions that can take advantages of SSE2 intrinsics +#define QT_ALWAYS_HAVE_SSE2 +#endif +#endif + + // SSE intrinsics #if defined(QT_HAVE_SSE2) || defined(QT_HAVE_SSE) || defined(QT_HAVE_MMX) #if defined(QT_LINUXBASE) |