diff options
| author | Liang Qi <liang.qi@qt.io> | 2017-11-23 12:32:56 +0100 |
|---|---|---|
| committer | Tor Arne Vestbø <tor.arne.vestbo@qt.io> | 2017-11-23 12:52:18 +0100 |
| commit | 7c4b0aa9706bdb79f0f79841cf6704e2f613fe69 (patch) | |
| tree | 77acbaa2d335759e0a5ed04d37608dce2b12acbc /src/corelib/global | |
| parent | 110e49c9cecca34dfacad33d19e04612cc2671b2 (diff) | |
| parent | eade2255ea7cd8200569080e9b295479b1f51bed (diff) | |
Merge remote-tracking branch 'origin/5.9' into 5.10
Conflicts:
src/corelib/io/qstandardpaths_win.cpp
src/plugins/platforms/ios/qioswindow.mm
src/plugins/platforms/ios/quiview.mm
tests/auto/widgets/itemviews/qtreeview/tst_qtreeview.cpp
Change-Id: I5deb0a0176a454a9c566e924d074ba60ce04f0bc
Diffstat (limited to 'src/corelib/global')
| -rw-r--r-- | src/corelib/global/qfloat16.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/src/corelib/global/qfloat16.h b/src/corelib/global/qfloat16.h index a36852fc22..72e28edf63 100644 --- a/src/corelib/global/qfloat16.h +++ b/src/corelib/global/qfloat16.h @@ -44,7 +44,16 @@ #include <QtCore/qmetatype.h> #include <string.h> -#if defined __F16C__ +#if defined(QT_COMPILER_SUPPORTS_F16C) && defined(__AVX2__) && !defined(__F16C__) +// All processors that support AVX2 do support F16C too. That doesn't mean +// we're allowed to use the intrinsics directly, so we'll do it only for +// the Intel and Microsoft's compilers. +# if defined(Q_CC_INTEL) || defined(Q_CC_MSVC) +# define __F16C__ 1 +# endif +#endif + +#if defined(QT_COMPILER_SUPPORTS_F16C) && defined(__F16C__) #include <immintrin.h> #endif @@ -116,7 +125,7 @@ QT_WARNING_DISABLE_CLANG("-Wc99-extensions") QT_WARNING_DISABLE_GCC("-Wold-style-cast") inline qfloat16::qfloat16(float f) Q_DECL_NOTHROW { -#if defined(QT_COMPILER_SUPPORTS_F16C) && (defined(__F16C__) || defined(__AVX2__)) +#if defined(QT_COMPILER_SUPPORTS_F16C) && defined(__F16C__) __m128 packsingle = _mm_set_ss(f); __m128i packhalf = _mm_cvtps_ph(packsingle, 0); b16 = _mm_extract_epi16(packhalf, 0); @@ -134,7 +143,7 @@ QT_WARNING_POP inline qfloat16::operator float() const Q_DECL_NOTHROW { -#if defined(QT_COMPILER_SUPPORTS_F16C) && (defined(__F16C__) || defined(__AVX2__)) +#if defined(QT_COMPILER_SUPPORTS_F16C) && defined(__F16C__) __m128i packhalf = _mm_cvtsi32_si128(b16); __m128 packsingle = _mm_cvtph_ps(packhalf); return _mm_cvtss_f32(packsingle); |