summaryrefslogtreecommitdiffstats
path: root/src/corelib/tools
diff options
context:
space:
mode:
Diffstat (limited to 'src/corelib/tools')
-rw-r--r--[-rwxr-xr-x]src/corelib/tools/qalgorithms.h10
-rw-r--r--src/corelib/tools/qbytearray.cpp4
-rw-r--r--src/corelib/tools/qchar.cpp10
-rw-r--r--src/corelib/tools/qcommandlineoption.cpp4
-rw-r--r--src/corelib/tools/qdatetime.cpp29
-rw-r--r--src/corelib/tools/qelapsedtimer_mac.cpp5
-rw-r--r--src/corelib/tools/qhash.cpp50
-rw-r--r--src/corelib/tools/qhash.h3
-rw-r--r--src/corelib/tools/qlocale.cpp4
-rw-r--r--src/corelib/tools/qlocale_win.cpp6
-rw-r--r--src/corelib/tools/qrect.cpp4
-rw-r--r--src/corelib/tools/qregexp.cpp6
-rw-r--r--src/corelib/tools/qregularexpression.cpp45
-rw-r--r--src/corelib/tools/qsimd.cpp292
-rw-r--r--src/corelib/tools/qsimd_p.h178
-rw-r--r--src/corelib/tools/qstring.cpp15
-rw-r--r--src/corelib/tools/qstringbuilder.h2
-rw-r--r--src/corelib/tools/qtimezone.cpp1
18 files changed, 483 insertions, 185 deletions
diff --git a/src/corelib/tools/qalgorithms.h b/src/corelib/tools/qalgorithms.h
index 57fbdf0eba..ffa3082d5e 100755..100644
--- a/src/corelib/tools/qalgorithms.h
+++ b/src/corelib/tools/qalgorithms.h
@@ -649,7 +649,7 @@ Q_DECL_RELAXED_CONSTEXPR inline uint qCountTrailingZeroBits(unsigned long v) Q_D
return qCountTrailingZeroBits(QIntegerForSizeof<long>::Unsigned(v));
}
-Q_DECL_CONSTEXPR inline uint qCountLeadingZeroBits(quint32 v) Q_DECL_NOTHROW
+Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint32 v) Q_DECL_NOTHROW
{
#if defined(Q_CC_GNU)
return v ? __builtin_clz(v) : 32U;
@@ -664,7 +664,7 @@ Q_DECL_CONSTEXPR inline uint qCountLeadingZeroBits(quint32 v) Q_DECL_NOTHROW
#endif
}
-Q_DECL_CONSTEXPR inline uint qCountLeadingZeroBits(quint8 v) Q_DECL_NOTHROW
+Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint8 v) Q_DECL_NOTHROW
{
#if defined(Q_CC_GNU)
return v ? __builtin_clz(v)-24U : 8U;
@@ -676,7 +676,7 @@ Q_DECL_CONSTEXPR inline uint qCountLeadingZeroBits(quint8 v) Q_DECL_NOTHROW
#endif
}
-Q_DECL_CONSTEXPR inline uint qCountLeadingZeroBits(quint16 v) Q_DECL_NOTHROW
+Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint16 v) Q_DECL_NOTHROW
{
#if defined(Q_CC_GNU)
return v ? __builtin_clz(v)-16U : 16U;
@@ -689,7 +689,7 @@ Q_DECL_CONSTEXPR inline uint qCountLeadingZeroBits(quint16 v) Q_DECL_NOTHROW
#endif
}
-Q_DECL_CONSTEXPR inline uint qCountLeadingZeroBits(quint64 v) Q_DECL_NOTHROW
+Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(quint64 v) Q_DECL_NOTHROW
{
#if defined(Q_CC_GNU)
return v ? __builtin_clzll(v) : 64U;
@@ -704,7 +704,7 @@ Q_DECL_CONSTEXPR inline uint qCountLeadingZeroBits(quint64 v) Q_DECL_NOTHROW
#endif
}
-Q_DECL_CONSTEXPR inline uint qCountLeadingZeroBits(unsigned long v) Q_DECL_NOTHROW
+Q_DECL_RELAXED_CONSTEXPR inline uint qCountLeadingZeroBits(unsigned long v) Q_DECL_NOTHROW
{
return qCountLeadingZeroBits(QIntegerForSizeof<long>::Unsigned(v));
}
diff --git a/src/corelib/tools/qbytearray.cpp b/src/corelib/tools/qbytearray.cpp
index 241c255b5d..ac191ef265 100644
--- a/src/corelib/tools/qbytearray.cpp
+++ b/src/corelib/tools/qbytearray.cpp
@@ -489,8 +489,8 @@ quint16 qChecksum(const char *data, uint len)
\overload
- Compresses the first \a nbytes of \a data and returns the
- compressed data in a new byte array.
+ Compresses the first \a nbytes of \a data at compression level
+ \a compressionLevel and returns the compressed data in a new byte array.
*/
#ifndef QT_NO_COMPRESS
diff --git a/src/corelib/tools/qchar.cpp b/src/corelib/tools/qchar.cpp
index e6c246e8e6..5469eee14d 100644
--- a/src/corelib/tools/qchar.cpp
+++ b/src/corelib/tools/qchar.cpp
@@ -598,12 +598,22 @@ QT_BEGIN_NAMESPACE
\fn QChar::QChar(char ch)
Constructs a QChar corresponding to ASCII/Latin-1 character \a ch.
+
+ \note This constructor is not available when \c QT_NO_CAST_FROM_ASCII
+ is defined.
+
+ \sa QT_NO_CAST_FROM_ASCII
*/
/*!
\fn QChar::QChar(uchar ch)
Constructs a QChar corresponding to ASCII/Latin-1 character \a ch.
+
+ \note This constructor is not available when \c QT_NO_CAST_FROM_ASCII
+ is defined.
+
+ \sa QT_NO_CAST_FROM_ASCII
*/
/*!
diff --git a/src/corelib/tools/qcommandlineoption.cpp b/src/corelib/tools/qcommandlineoption.cpp
index eb50cee5bb..8c0ba8cb2b 100644
--- a/src/corelib/tools/qcommandlineoption.cpp
+++ b/src/corelib/tools/qcommandlineoption.cpp
@@ -284,7 +284,7 @@ QStringList QCommandLineOptionPrivate::removeInvalidNames(QStringList nameList)
else
nameList.erase(std::remove_if(nameList.begin(), nameList.end(), IsInvalidName()),
nameList.end());
- return qMove(nameList);
+ return nameList;
}
/*!
@@ -391,7 +391,7 @@ QStringList QCommandLineOption::defaultValues() const
/*!
Sets whether to hide this option in the user-visible help output.
- All options are visible by default. Setting \a hidden to true for
+ All options are visible by default. Setting \a hide to true for
a particular option makes it internal, i.e. not listed in the help output.
\since 5.6
diff --git a/src/corelib/tools/qdatetime.cpp b/src/corelib/tools/qdatetime.cpp
index e445055e1d..0d7225eea0 100644
--- a/src/corelib/tools/qdatetime.cpp
+++ b/src/corelib/tools/qdatetime.cpp
@@ -1681,6 +1681,7 @@ bool QTime::setHMS(int h, int m, int s, int ms)
QTime QTime::addSecs(int s) const
{
+ s %= SECS_PER_DAY;
return addMSecs(s * 1000);
}
@@ -4791,23 +4792,21 @@ QDataStream &operator<<(QDataStream &out, const QDateTime &dateTime)
// From 4.0 to 5.1 (except 5.0) we used QDateTimePrivate::Spec
dateAndTime = dateTime.d->getDateTime();
out << dateAndTime;
- if (out.version() >= QDataStream::Qt_4_0) {
- switch (dateTime.timeSpec()) {
- case Qt::UTC:
- out << (qint8)QDateTimePrivate::UTC;
- break;
- case Qt::OffsetFromUTC:
- out << (qint8)QDateTimePrivate::OffsetFromUTC;
- break;
- case Qt::TimeZone:
+ switch (dateTime.timeSpec()) {
+ case Qt::UTC:
+ out << (qint8)QDateTimePrivate::UTC;
+ break;
+ case Qt::OffsetFromUTC:
+ out << (qint8)QDateTimePrivate::OffsetFromUTC;
+ break;
+ case Qt::TimeZone:
#ifndef QT_BOOTSTRAPPED
- out << (qint8)QDateTimePrivate::TimeZone;
- break;
+ out << (qint8)QDateTimePrivate::TimeZone;
+ break;
#endif // QT_BOOTSTRAPPED
- case Qt::LocalTime:
- out << (qint8)QDateTimePrivate::LocalUnknown;
- break;
- }
+ case Qt::LocalTime:
+ out << (qint8)QDateTimePrivate::LocalUnknown;
+ break;
}
} else { // version < QDataStream::Qt_4_0
diff --git a/src/corelib/tools/qelapsedtimer_mac.cpp b/src/corelib/tools/qelapsedtimer_mac.cpp
index a355bf03e8..e946ac096f 100644
--- a/src/corelib/tools/qelapsedtimer_mac.cpp
+++ b/src/corelib/tools/qelapsedtimer_mac.cpp
@@ -59,8 +59,13 @@ static qint64 absoluteToNSecs(qint64 cpuTime)
{
if (info.denom == 0)
mach_timebase_info(&info);
+#ifdef __LP64__
+ __uint128_t nsecs = static_cast<__uint128_t>(cpuTime) * info.numer / info.denom;
+ return static_cast<qint64>(nsecs);
+#else
qint64 nsecs = cpuTime * info.numer / info.denom;
return nsecs;
+#endif
}
static qint64 absoluteToMSecs(qint64 cpuTime)
diff --git a/src/corelib/tools/qhash.cpp b/src/corelib/tools/qhash.cpp
index 1f3ea36121..b334a697a9 100644
--- a/src/corelib/tools/qhash.cpp
+++ b/src/corelib/tools/qhash.cpp
@@ -290,6 +290,53 @@ static void qt_initialize_qhash_seed()
}
}
+/*! \relates QHash
+ \since 5.6
+
+ Returns the current global QHash seed.
+
+ The seed is set in any newly created QHash. See \l{qHash} about how this seed
+ is being used by QHash.
+
+ \sa qSetGlobalQHashSeed
+ */
+int qGlobalQHashSeed()
+{
+ return qt_qhash_seed.load();
+}
+
+/*! \relates QHash
+ \since 5.6
+
+ Sets the global QHash seed.
+
+ Manually setting the global QHash seed value should be done only for testing
+ and debugging purposes, when deterministic and reproducible behavior on a QHash
+ is needed. We discourage to do it in production code as it can make your
+ application susceptible to \l{algorithmic complexity attacks}.
+
+ The seed is set in any newly created QHash. See \l{qHash} about how this seed
+ is being used by QHash.
+
+ If the environment variable \c QT_HASH_SEED is set, calling this function will
+ result in a no-op.
+
+ Passing the value -1 will reinitialize the global QHash seed to a random value.
+
+ \sa qGlobalQHashSeed
+ */
+void qSetGlobalQHashSeed(int newSeed)
+{
+ if (qEnvironmentVariableIsSet("QT_HASH_SEED"))
+ return;
+ if (newSeed == -1) {
+ int x(qt_create_qhash_seed() & INT_MAX);
+ qt_qhash_seed.store(x);
+ } else {
+ qt_qhash_seed.store(newSeed & INT_MAX);
+ }
+}
+
/*!
\internal
@@ -1132,7 +1179,8 @@ uint qHash(long double key, uint seed) Q_DECL_NOTHROW
where you temporarily need deterministic behavior, for example for debugging or
regression testing. To disable the randomization, define the environment
variable \c QT_HASH_SEED. The contents of that variable, interpreted as a
- decimal value, will be used as the seed for qHash().
+ decimal value, will be used as the seed for qHash(). Alternatively, you can
+ call the qSetGlobalQHashSeed() function.
\sa QHashIterator, QMutableHashIterator, QMap, QSet
*/
diff --git a/src/corelib/tools/qhash.h b/src/corelib/tools/qhash.h
index e367cc0068..8d65a018ae 100644
--- a/src/corelib/tools/qhash.h
+++ b/src/corelib/tools/qhash.h
@@ -1037,6 +1037,9 @@ Q_INLINE_TEMPLATE int QMultiHash<Key, T>::count(const Key &key, const T &value)
return n;
}
+Q_CORE_EXPORT int qGlobalQHashSeed();
+Q_CORE_EXPORT void qSetGlobalQHashSeed(int newSeed);
+
Q_DECLARE_ASSOCIATIVE_ITERATOR(Hash)
Q_DECLARE_MUTABLE_ASSOCIATIVE_ITERATOR(Hash)
diff --git a/src/corelib/tools/qlocale.cpp b/src/corelib/tools/qlocale.cpp
index 703341cc36..181daa04e4 100644
--- a/src/corelib/tools/qlocale.cpp
+++ b/src/corelib/tools/qlocale.cpp
@@ -2742,9 +2742,9 @@ QString QLocaleData::doubleToString(const QChar _zero, const QChar plus, const Q
const QChar exponential, const QChar group, const QChar decimal,
double d, int precision, DoubleForm form, int width, unsigned flags)
{
- if (precision == -1)
+ if (precision < 0)
precision = 6;
- if (width == -1)
+ if (width < 0)
width = 0;
bool negative = false;
diff --git a/src/corelib/tools/qlocale_win.cpp b/src/corelib/tools/qlocale_win.cpp
index 1cad9b32e3..4781bab172 100644
--- a/src/corelib/tools/qlocale_win.cpp
+++ b/src/corelib/tools/qlocale_win.cpp
@@ -51,9 +51,7 @@
#include <wrl.h>
#include <windows.foundation.h>
#include <windows.foundation.collections.h>
-#ifndef Q_OS_WINPHONE
#include <windows.globalization.h>
-#endif
#endif // Q_OS_WINRT
QT_BEGIN_NAMESPACE
@@ -639,7 +637,6 @@ QVariant QSystemLocalePrivate::uiLanguages()
return QStringList(QString::fromLatin1(winLangCodeToIsoName(GetUserDefaultUILanguage())));
#else // !Q_OS_WINRT
QStringList result;
-#ifndef Q_OS_WINPHONE
ComPtr<ABI::Windows::Globalization::IApplicationLanguagesStatics> appLanguagesStatics;
if (FAILED(GetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Globalization_ApplicationLanguages).Get(), &appLanguagesStatics))) {
qWarning("Could not obtain ApplicationLanguagesStatic");
@@ -661,9 +658,6 @@ QVariant QSystemLocalePrivate::uiLanguages()
PCWSTR rawString = language.GetRawBuffer(&length);
result << QString::fromWCharArray(rawString, length);
}
-#else // !Q_OS_WINPHONE
- result << QString::fromWCharArray(lcName);
-#endif // Q_OS_WINPHONE
return result;
#endif // Q_OS_WINRT
diff --git a/src/corelib/tools/qrect.cpp b/src/corelib/tools/qrect.cpp
index b2174745e4..847f650a70 100644
--- a/src/corelib/tools/qrect.cpp
+++ b/src/corelib/tools/qrect.cpp
@@ -2403,7 +2403,6 @@ QRect QRectF::toAlignedRect() const Q_DECL_NOTHROW
/*!
\fn QRectF QRectF::marginsAdded(const QMarginsF &margins) const
- \relates QRectF
\since 5.3
Returns a rectangle grown by the \a margins.
@@ -2413,7 +2412,6 @@ QRect QRectF::toAlignedRect() const Q_DECL_NOTHROW
/*!
\fn QRectF QRectF::marginsRemoved(const QMarginsF &margins) const
- \relates QRectF
\since 5.3
Removes the \a margins from the rectangle, shrinking it.
@@ -2423,7 +2421,6 @@ QRect QRectF::toAlignedRect() const Q_DECL_NOTHROW
/*!
\fn QRectF QRectF::operator+=(const QMarginsF &margins)
- \relates QRectF
\since 5.3
Adds the \a margins to the rectangle, growing it.
@@ -2433,7 +2430,6 @@ QRect QRectF::toAlignedRect() const Q_DECL_NOTHROW
/*!
\fn QRectF QRectF::operator-=(const QMarginsF &margins)
- \relates QRectF
\since 5.3
Returns a rectangle shrunk by the \a margins.
diff --git a/src/corelib/tools/qregexp.cpp b/src/corelib/tools/qregexp.cpp
index 8000dc8688..82de664a56 100644
--- a/src/corelib/tools/qregexp.cpp
+++ b/src/corelib/tools/qregexp.cpp
@@ -116,6 +116,10 @@ int qFindString(const QChar *haystack, int haystackLen, int from,
A good text on regexps is \e {Mastering Regular Expressions}
(Third Edition) by Jeffrey E. F. Friedl, ISBN 0-596-52812-4.
+ \note In Qt 5, the new QRegularExpression class provides a Perl
+ compatible implementation of regular expressions and is recommended
+ in place of QRegExp.
+
\tableofcontents
\section1 Introduction
@@ -488,7 +492,7 @@ int qFindString(const QChar *haystack, int haystackLen, int from,
when it is followed by 'char'.
\endtable
- \keyword QRegExp wildcard matching
+ \target QRegExp wildcard matching
\section1 Wildcard Matching
Most command shells such as \e bash or \e cmd.exe support "file
diff --git a/src/corelib/tools/qregularexpression.cpp b/src/corelib/tools/qregularexpression.cpp
index 88a048d826..d8b0bf6e9f 100644
--- a/src/corelib/tools/qregularexpression.cpp
+++ b/src/corelib/tools/qregularexpression.cpp
@@ -1,7 +1,7 @@
/****************************************************************************
**
-** Copyright (C) 2012 Giuseppe D'Angelo <dangelog@gmail.com>.
-** Copyright (C) 2012 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
+** Copyright (C) 2015 Giuseppe D'Angelo <dangelog@gmail.com>.
+** Copyright (C) 2015 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
@@ -1326,48 +1326,45 @@ QRegularExpressionMatchPrivate *QRegularExpressionPrivate::doMatch(const QString
int * const captureOffsets = priv->capturedOffsets.data();
const int captureOffsetsCount = priv->capturedOffsets.size();
- int realOffset = offset + subjectStart;
- const int realSubjectLength = subjectLength + subjectStart;
-
- const unsigned short * const subjectUtf16 = subject.utf16();
+ const unsigned short * const subjectUtf16 = subject.utf16() + subjectStart;
int result;
if (!previousMatchWasEmpty) {
result = pcre16SafeExec(compiledPattern, currentStudyData,
- subjectUtf16, realSubjectLength,
- realOffset, pcreOptions,
+ subjectUtf16, subjectLength,
+ offset, pcreOptions,
captureOffsets, captureOffsetsCount);
} else {
result = pcre16SafeExec(compiledPattern, currentStudyData,
- subjectUtf16, realSubjectLength,
- realOffset, pcreOptions | PCRE_NOTEMPTY_ATSTART | PCRE_ANCHORED,
+ subjectUtf16, subjectLength,
+ offset, pcreOptions | PCRE_NOTEMPTY_ATSTART | PCRE_ANCHORED,
captureOffsets, captureOffsetsCount);
if (result == PCRE_ERROR_NOMATCH) {
- ++realOffset;
+ ++offset;
if (usingCrLfNewlines
- && realOffset < realSubjectLength
- && subjectUtf16[realOffset - 1] == QLatin1Char('\r')
- && subjectUtf16[realOffset] == QLatin1Char('\n')) {
- ++realOffset;
- } else if (realOffset < realSubjectLength
- && QChar::isLowSurrogate(subjectUtf16[realOffset])) {
- ++realOffset;
+ && offset < subjectLength
+ && subjectUtf16[offset - 1] == QLatin1Char('\r')
+ && subjectUtf16[offset] == QLatin1Char('\n')) {
+ ++offset;
+ } else if (offset < subjectLength
+ && QChar::isLowSurrogate(subjectUtf16[offset])) {
+ ++offset;
}
result = pcre16SafeExec(compiledPattern, currentStudyData,
- subjectUtf16, realSubjectLength,
- realOffset, pcreOptions,
+ subjectUtf16, subjectLength,
+ offset, pcreOptions,
captureOffsets, captureOffsetsCount);
}
}
#ifdef QREGULAREXPRESSION_DEBUG
qDebug() << "Matching" << pattern << "against" << subject
- << "starting at" << subjectStart << "len" << subjectLength << "real len" << realSubjectLength
- << "offset" << offset << "real offset" << realOffset
+ << "starting at" << subjectStart << "len" << subjectLength
+ << "offset" << offset
<< matchType << matchOptions << previousMatchWasEmpty
<< "result" << result;
#endif
@@ -2057,7 +2054,7 @@ QString QRegularExpressionMatch::captured(int nth) const
if (start == -1) // didn't capture
return QString();
- return d->subject.mid(start, capturedLength(nth));
+ return d->subject.mid(start + d->subjectStart, capturedLength(nth));
}
/*!
@@ -2078,7 +2075,7 @@ QStringRef QRegularExpressionMatch::capturedRef(int nth) const
if (start == -1) // didn't capture
return QStringRef();
- return d->subject.midRef(start, capturedLength(nth));
+ return d->subject.midRef(start + d->subjectStart, capturedLength(nth));
}
/*!
diff --git a/src/corelib/tools/qsimd.cpp b/src/corelib/tools/qsimd.cpp
index e7917ffdac..d0c65a04b1 100644
--- a/src/corelib/tools/qsimd.cpp
+++ b/src/corelib/tools/qsimd.cpp
@@ -78,28 +78,28 @@ static inline uint detectProcessorFeatures()
return 0;
}
#elif defined (Q_OS_WINCE)
-static inline uint detectProcessorFeatures()
+static inline quint64 detectProcessorFeatures()
{
- uint features = 0;
+ quint64 features = 0;
#if defined (ARM)
# ifdef PF_ARM_NEON
if (IsProcessorFeaturePresent(PF_ARM_NEON))
- features |= ARM_NEON;
+ features |= Q_UINT64_C(1) << CpuFeatureNEON;
# endif
#elif defined(_X86_)
if (IsProcessorFeaturePresent(PF_XMMI64_INSTRUCTIONS_AVAILABLE))
- features |= SSE2;
+ features |= Q_UINT64_C(1) << CpuFeatureSSE2;
if (IsProcessorFeaturePresent(PF_SSE3_INSTRUCTIONS_AVAILABLE))
- features |= SSE3;
+ features |= Q_UINT64_C(1) << CpuFeatureSSE3;
#endif
return features;
}
#elif defined(Q_PROCESSOR_ARM)
-static inline uint detectProcessorFeatures()
+static inline quint64 detectProcessorFeatures()
{
- uint features = 0;
+ quint64 features = 0;
#if defined(Q_OS_LINUX)
int auxv = qt_safe_open("/proc/self/auxv", O_RDONLY);
@@ -117,7 +117,7 @@ static inline uint detectProcessorFeatures()
for (int i = 0; i < max; i += 2)
if (vector[i] == AT_HWCAP) {
if (vector[i+1] & HWCAP_NEON)
- features |= NEON;
+ features |= Q_UINT64_C(1) << CpuFeatureNEON;
break;
}
}
@@ -129,7 +129,7 @@ static inline uint detectProcessorFeatures()
#endif
#if defined(__ARM_NEON__)
- features = NEON;
+ features = Q_UINT64_C(1) << CpuFeatureNEON;
#endif
return features;
@@ -205,21 +205,24 @@ static void cpuidFeatures01(uint &ecx, uint &edx)
inline void __cpuidex(int info[4], int, __int64) { memset(info, 0, 4*sizeof(int));}
#endif
-static void cpuidFeatures07_00(uint &ebx)
+static void cpuidFeatures07_00(uint &ebx, uint &ecx)
{
#if defined(Q_CC_GNU)
qregisteruint rbx; // in case it's 64-bit
+ qregisteruint rcx = 0;
asm ("xchg " PICreg", %0\n"
"cpuid\n"
"xchg " PICreg", %0\n"
- : "=&r" (rbx)
- : "a" (7), "c" (0)
+ : "=&r" (rbx), "+&c" (rcx)
+ : "a" (7)
: "%edx");
ebx = rbx;
+ ecx = rcx;
#elif defined(Q_OS_WIN)
int info[4];
__cpuidex(info, 7, 0);
ebx = info[1];
+ ecx = info[2];
#endif
}
@@ -240,7 +243,7 @@ static void xgetbv(uint in, uint &eax, uint &edx)
#endif
}
-static inline uint detectProcessorFeatures()
+static quint64 detectProcessorFeatures()
{
// Flags from the CR0 / XCR0 state register
enum XCR0Flags {
@@ -257,8 +260,15 @@ static inline uint detectProcessorFeatures()
AVXState = XMM0_15 | YMM0_15Hi128,
AVX512State = AVXState | OpMask | ZMM0_15Hi256 | ZMM16_31
};
-
- uint features = 0;
+ static const quint64 AllAVX512 = (Q_UINT64_C(1) << CpuFeatureAVX512F) | (Q_UINT64_C(1) << CpuFeatureAVX512CD) |
+ (Q_UINT64_C(1) << CpuFeatureAVX512ER) | (Q_UINT64_C(1) << CpuFeatureAVX512PF) |
+ (Q_UINT64_C(1) << CpuFeatureAVX512BW) | (Q_UINT64_C(1) << CpuFeatureAVX512DQ) |
+ (Q_UINT64_C(1) << CpuFeatureAVX512VL) |
+ (Q_UINT64_C(1) << CpuFeatureAVX512IFMA) | (Q_UINT64_C(1) << CpuFeatureAVX512VBMI);
+ static const quint64 AllAVX2 = (Q_UINT64_C(1) << CpuFeatureAVX2) | AllAVX512;
+ static const quint64 AllAVX = (Q_UINT64_C(1) << CpuFeatureAVX) | AllAVX2;
+
+ quint64 features = 0;
int cpuidLevel = maxBasicCpuidSupported();
#if Q_PROCESSOR_X86 < 5
if (cpuidLevel < 1)
@@ -269,28 +279,23 @@ static inline uint detectProcessorFeatures()
uint cpuid01ECX = 0, cpuid01EDX = 0;
cpuidFeatures01(cpuid01ECX, cpuid01EDX);
+
+ // the low 32-bits of features is cpuid01ECX
+ // note: we need to check OS support for saving the AVX register state
+ features = cpuid01ECX;
+
#if defined(Q_PROCESSOR_X86_32)
// x86 might not have SSE2 support
if (cpuid01EDX & (1u << 26))
- features |= SSE2;
+ features |= Q_UINT64_C(1) << CpuFeatureSSE2;
+ else
+ features &= ~(Q_UINT64_C(1) << CpuFeatureSSE2);
// we should verify that the OS enabled saving of the SSE state...
#else
// x86-64 or x32
- features = SSE2;
+ features |= Q_UINT64_C(1) << CpuFeatureSSE2;
#endif
- // common part between 32- and 64-bit
- if (cpuid01ECX & (1u))
- features |= SSE3;
- if (cpuid01ECX & (1u << 9))
- features |= SSSE3;
- if (cpuid01ECX & (1u << 19))
- features |= SSE4_1;
- if (cpuid01ECX & (1u << 20))
- features |= SSE4_2;
- if (cpuid01ECX & (1u << 25))
- features |= 0; // AES, enable if needed
-
uint xgetbvA = 0, xgetbvD = 0;
if (cpuid01ECX & (1u << 27)) {
// XGETBV enabled
@@ -298,22 +303,27 @@ static inline uint detectProcessorFeatures()
}
uint cpuid0700EBX = 0;
- if (cpuidLevel >= 7)
- cpuidFeatures07_00(cpuid0700EBX);
+ uint cpuid0700ECX = 0;
+ if (cpuidLevel >= 7) {
+ cpuidFeatures07_00(cpuid0700EBX, cpuid0700ECX);
- if ((xgetbvA & AVXState) == AVXState) {
- // support for YMM and XMM registers is enabled
- if (cpuid01ECX & (1u << 28))
- features |= AVX;
-
- if (cpuid0700EBX & (1u << 5))
- features |= AVX2;
+ // the high 32-bits of features is cpuid0700EBX
+ features |= quint64(cpuid0700EBX) << 32;
}
- if (cpuid0700EBX & (1u << 4))
- features |= HLE; // Hardware Lock Ellision
- if (cpuid0700EBX & (1u << 11))
- features |= RTM; // Restricted Transactional Memory
+ if ((xgetbvA & AVXState) != AVXState) {
+ // support for YMM registers is disabled, disable all AVX
+ features &= ~AllAVX;
+ } else if ((xgetbvA & AVX512State) != AVX512State) {
+ // support for ZMM registers or mask registers is disabled, disable all AVX512
+ features &= ~AllAVX512;
+ } else {
+ // this feature is out of order
+ if (cpuid0700ECX & (1u << 1))
+ features |= Q_UINT64_C(1) << CpuFeatureAVX512VBMI;
+ else
+ features &= ~(Q_UINT64_C(1) << CpuFeatureAVX512VBMI);
+ }
return features;
}
@@ -430,24 +440,24 @@ static bool procCpuinfoContains(const char *prefix, const char *string)
}
#endif
-static inline uint detectProcessorFeatures()
+static inline quint64 detectProcessorFeatures()
{
// NOTE: MIPS 74K cores are the only ones supporting DSPr2.
- uint flags = 0;
+ quint64 flags = 0;
#if defined __mips_dsp
- flags |= DSP;
+ flags |= Q_UINT64_C(1) << CpuFeatureDSP;
# if defined __mips_dsp_rev && __mips_dsp_rev >= 2
- flags |= DSPR2;
+ flags |= Q_UINT64_C(1) << CpuFeatureDSPR2;
# elif defined(Q_OS_LINUX)
if (procCpuinfoContains("cpu model", "MIPS 74Kc") || procCpuinfoContains("cpu model", "MIPS 74Kf"))
- flags |= DSPR2;
+ flags |= Q_UINT64_C(1) << CpuFeatureDSPR2;
# endif
#elif defined(Q_OS_LINUX)
if (procCpuinfoContains("ASEs implemented", "dsp")) {
- flags |= DSP;
+ flags |= Q_UINT64_C(1) << CpuFeatureDSP;
if (procCpuinfoContains("cpu model", "MIPS 74Kc") || procCpuinfoContains("cpu model", "MIPS 74Kf"))
- flags |= DSPR2;
+ flags |= Q_UINT64_C(1) << CpuFeatureDSPR2;
}
#endif
@@ -462,70 +472,179 @@ static inline uint detectProcessorFeatures()
#endif
/*
- * Use kdesdk/scripts/generate_string_table.pl to update the table below.
- * Here's the data (don't forget the ONE leading space):
+ * Use kdesdk/scripts/generate_string_table.pl to update the table below. Note
+ * that the x86 version has a lot of blanks that must be kept and that the
+ * offset table's type is changed to make the table smaller. We also remove the
+ * terminating -1 that the script adds.
+ */
+// begin generated
+#if defined(Q_PROCESSOR_ARM)
+/* Data:
neon
- sse2
+ */
+static const char features_string[] = " neon\0";
+static const int features_indices[] = { 0 };
+#elif defined(Q_PROCESSOR_MIPS)
+/* Data:
+ dsp
+ dspr2
+*/
+static const char features_string[] =
+ " dsp\0"
+ " dspr2\0"
+ "\0";
+
+static const int features_indices[] = {
+ 0, 5
+};
+#elif defined(Q_PROCESSOR_X86)
+/* Data:
sse3
+ sse2
+ avx512vbmi
+
+
+
+
+
+
ssse3
+
+
+ fma
+ cmpxchg16b
+
+
+
+
+
sse4.1
sse4.2
+
+ movbe
+ popcnt
+
+ aes
+
+
avx
- avx2
+ f16c
+ rdrand
+
+
+
+
+ bmi
hle
+ avx2
+
+
+ bmi2
+
+
rtm
- dsp
- dspr2
- */
-// begin generated
+
+
+
+ avx512f
+ avx512dq
+ rdseed
+
+
+ avx512ifma
+
+
+
+
+ avx512pf
+ avx512er
+ avx512cd
+ sha
+ avx512bw
+ avx512vl
+ */
static const char features_string[] =
- "\0"
- " neon\0"
- " sse2\0"
" sse3\0"
+ " sse2\0"
+ " avx512vbmi\0"
" ssse3\0"
+ " fma\0"
+ " cmpxchg16b\0"
" sse4.1\0"
" sse4.2\0"
+ " movbe\0"
+ " popcnt\0"
+ " aes\0"
" avx\0"
- " avx2\0"
+ " f16c\0"
+ " rdrand\0"
+ " bmi\0"
" hle\0"
+ " avx2\0"
+ " bmi2\0"
" rtm\0"
- " dsp\0"
- " dspr2\0"
+ " avx512f\0"
+ " avx512dq\0"
+ " rdseed\0"
+ " avx512ifma\0"
+ " avx512pf\0"
+ " avx512er\0"
+ " avx512cd\0"
+ " sha\0"
+ " avx512bw\0"
+ " avx512vl\0"
"\0";
-static const int features_indices[] = {
- 0, 1, 7, 13, 19, 26, 34, 42,
- 47, 53, 58, 63, 68, -1
+static const quint8 features_indices[] = {
+ 0, 6, 12, 5, 5, 5, 5, 5,
+ 5, 24, 5, 5, 31, 36, 5, 5,
+ 5, 5, 5, 48, 56, 5, 64, 71,
+ 5, 79, 5, 5, 84, 89, 95, 5,
+ 5, 5, 5, 103, 108, 113, 5, 5,
+ 119, 5, 5, 125, 5, 5, 5, 5,
+ 130, 139, 149, 5, 5, 157, 5, 5,
+ 5, 5, 169, 179, 189, 199, 204, 214
};
+#else
+static const char features_string[] = "";
+static const int features_indices[] = { };
+#endif
// end generated
-static const int features_count = (sizeof features_indices - 1) / (sizeof features_indices[0]);
+static const int features_count = (sizeof features_indices) / (sizeof features_indices[0]);
// record what CPU features were enabled by default in this Qt build
-static const uint minFeature = qCompilerCpuFeatures;
+static const quint64 minFeature = qCompilerCpuFeatures;
#ifdef Q_OS_WIN
#if defined(Q_CC_GNU)
-# define ffs __builtin_ffs
+# define ffsll __builtin_ffsll
#else
-int ffs(int i)
+int ffsll(quint64 i)
{
-#ifndef Q_OS_WINCE
+#if defined(Q_OS_WIN64)
unsigned long result;
- return _BitScanForward(&result, i) ? result : 0;
+ return _BitScanForward64(&result, i) ? result : 0;
+#elif !defined(Q_OS_WINCE)
+ unsigned long result;
+ return _BitScanForward(&result, i) ? result :
+ _BitScanForward(&result, i >> 32) ? result + 32 : 0;
#else
return 0;
#endif
}
#endif
-#elif defined(Q_OS_ANDROID)
-# define ffs __builtin_ffs
+#elif defined(Q_OS_ANDROID) || defined(Q_OS_QNX)
+# define ffsll __builtin_ffsll
#endif
-QBasicAtomicInt qt_cpu_features = Q_BASIC_ATOMIC_INITIALIZER(0);
+#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()
{
@@ -547,11 +666,11 @@ void qDetectCpuFeatures()
// contains all the features that the code required. Qt 4 ran for years
// like that, so it shouldn't be a problem.
- qt_cpu_features.store(minFeature | QSimdInitialized);
+ qt_cpu_features.store(minFeature | quint32(QSimdInitialized));
return;
# endif
#endif
- uint f = detectProcessorFeatures();
+ quint64 f = detectProcessorFeatures();
QByteArray disable = qgetenv("QT_NO_CPU_FEATURE");
if (!disable.isEmpty()) {
disable.prepend(' ');
@@ -567,29 +686,32 @@ void qDetectCpuFeatures()
bool runningOnValgrind = false;
#endif
if (!runningOnValgrind && (minFeature != 0 && (f & minFeature) != minFeature)) {
- uint missing = minFeature & ~f;
+ quint64 missing = minFeature & ~f;
fprintf(stderr, "Incompatible processor. This Qt build requires the following features:\n ");
for (int i = 0; i < features_count; ++i) {
- if (missing & (1 << i))
+ if (missing & (Q_UINT64_C(1) << i))
fprintf(stderr, "%s", features_string + features_indices[i]);
}
fprintf(stderr, "\n");
fflush(stderr);
- qFatal("Aborted. Incompatible processor: missing feature 0x%x -%s.", missing,
- features_string + features_indices[ffs(missing) - 1]);
+ qFatal("Aborted. Incompatible processor: missing feature 0x%llx -%s.", missing,
+ features_string + features_indices[ffsll(missing) - 1]);
}
- qt_cpu_features.store(f | QSimdInitialized);
+ qt_cpu_features[0].store(f | quint32(QSimdInitialized));
+#ifndef Q_ATOMIC_INT64_IS_SUPPORTED
+ qt_cpu_features[1].store(f >> 32);
+#endif
}
void qDumpCPUFeatures()
{
- uint features = qCpuFeatures();
+ quint64 features = qCpuFeatures() & ~quint64(QSimdInitialized);
printf("Processor features: ");
for (int i = 0; i < features_count; ++i) {
- if (features & (1 << i))
+ if (features & (Q_UINT64_C(1) << i))
printf("%s%s", features_string + features_indices[i],
- minFeature & (1 << i) ? "[required]" : "");
+ minFeature & (Q_UINT64_C(1) << i) ? "[required]" : "");
}
puts("");
}
diff --git a/src/corelib/tools/qsimd_p.h b/src/corelib/tools/qsimd_p.h
index dd93b4fd26..be003f6c6d 100644
--- a/src/corelib/tools/qsimd_p.h
+++ b/src/corelib/tools/qsimd_p.h
@@ -54,9 +54,9 @@
* for the x86 and ARM intrinsics:
* - GCC: the -mXXX or march=YYY flag is necessary before #include
* up to 4.8; GCC >= 4.9 can include unconditionally
+ * - Clang: same as GCC, with unconditional inclusion with version 3.7
* - Intel CC: #include can happen unconditionally
* - MSVC: #include can happen unconditionally
- * - RVCT: ???
*
* We will try to include all headers possible under this configuration.
*
@@ -138,7 +138,8 @@
#define QT_COMPILER_SUPPORTS(x) (QT_COMPILER_SUPPORTS_ ## x - 0)
#if (defined(Q_CC_INTEL) || defined(Q_CC_MSVC) \
- || (defined(Q_CC_GNU) && !defined(Q_CC_CLANG) && (__GNUC__-0) * 100 + (__GNUC_MINOR__-0) >= 409)) \
+ || (defined(Q_CC_GNU) && !defined(Q_CC_CLANG) && (__GNUC__-0) * 100 + (__GNUC_MINOR__-0) >= 409) \
+ || (defined(Q_CC_CLANG) && Q_CC_CLANG >= 307)) \
&& !defined(QT_BOOTSTRAPPED)
# define QT_COMPILER_SUPPORTS_SIMD_ALWAYS
# define QT_COMPILER_SUPPORTS_HERE(x) QT_COMPILER_SUPPORTS(x)
@@ -217,6 +218,23 @@
# endif
#endif
+#define QT_FUNCTION_TARGET_STRING_AVX512F "avx512f"
+#define QT_FUNCTION_TARGET_STRING_AVX512CD "avx512cd"
+#define QT_FUNCTION_TARGET_STRING_AVX512ER "avx512er"
+#define QT_FUNCTION_TARGET_STRING_AVX512PF "avx512pf"
+#define QT_FUNCTION_TARGET_STRING_AVX512BW "avx512bw"
+#define QT_FUNCTION_TARGET_STRING_AVX512DQ "avx512dq"
+#define QT_FUNCTION_TARGET_STRING_AVX512VL "avx512vl"
+#define QT_FUNCTION_TARGET_STRING_AVX512IFMA "avx512ifma"
+#define QT_FUNCTION_TARGET_STRING_AVX512VBMI "avx512vbmi"
+
+#define QT_FUNCTION_TARGET_STRING_F16C "f16c"
+#define QT_FUNCTION_TARGET_STRING_RDRAND "rdrnd"
+#define QT_FUNCTION_TARGET_STRING_BMI "bmi"
+#define QT_FUNCTION_TARGET_STRING_BMI2 "bmi2"
+#define QT_FUNCTION_TARGET_STRING_RDSEED "rdseed"
+#define QT_FUNCTION_TARGET_STRING_SHA "sha"
+
// other x86 intrinsics
#if defined(Q_PROCESSOR_X86) && ((defined(Q_CC_GNU) && (Q_CC_GNU >= 404)) \
|| (defined(Q_CC_CLANG) && (Q_CC_CLANG >= 208)) \
@@ -244,74 +262,170 @@ QT_BEGIN_NAMESPACE
enum CPUFeatures {
- NEON = 0x2, ARM_NEON = NEON,
- SSE2 = 0x4,
- SSE3 = 0x8,
- SSSE3 = 0x10,
- SSE4_1 = 0x20,
- SSE4_2 = 0x40,
- AVX = 0x80,
- AVX2 = 0x100,
- HLE = 0x200,
- RTM = 0x400,
- DSP = 0x800,
- DSPR2 = 0x1000,
+#if defined(Q_PROCESSOR_ARM)
+ CpuFeatureNEON = 0,
+ CpuFeatureARM_NEON = CpuFeatureNEON,
+#elif defined(Q_PROCESSOR_MIPS)
+ CpuFeatureDSP = 0,
+ CpuFeatureDSPR2 = 1,
+#elif defined(Q_PROCESSOR_X86)
+ // The order of the flags is jumbled so it matches most closely the bits in CPUID
+ // Out of order:
+ CpuFeatureSSE2 = 1, // uses the bit for PCLMULQDQ
+ // in level 1, ECX
+ CpuFeatureSSE3 = (0 + 0),
+ CpuFeatureSSSE3 = (0 + 9),
+ CpuFeatureSSE4_1 = (0 + 19),
+ CpuFeatureSSE4_2 = (0 + 20),
+ CpuFeatureMOVBE = (0 + 22),
+ CpuFeaturePOPCNT = (0 + 23),
+ CpuFeatureAES = (0 + 25),
+ CpuFeatureAVX = (0 + 28),
+ CpuFeatureF16C = (0 + 29),
+ CpuFeatureRDRAND = (0 + 30),
+ // 31 is always zero and we've used it for the QSimdInitialized
+
+ // in level 7, leaf 0, EBX
+ CpuFeatureBMI = (32 + 3),
+ CpuFeatureHLE = (32 + 4),
+ CpuFeatureAVX2 = (32 + 5),
+ CpuFeatureBMI2 = (32 + 8),
+ CpuFeatureRTM = (32 + 11),
+ CpuFeatureAVX512F = (32 + 16),
+ CpuFeatureAVX512DQ = (32 + 17),
+ CpuFeatureRDSEED = (32 + 18),
+ CpuFeatureAVX512IFMA = (32 + 21),
+ CpuFeatureAVX512PF = (32 + 26),
+ CpuFeatureAVX512ER = (32 + 27),
+ CpuFeatureAVX512CD = (32 + 28),
+ CpuFeatureSHA = (32 + 29),
+ CpuFeatureAVX512BW = (32 + 30),
+ CpuFeatureAVX512VL = (32 + 31),
+
+ // in level 7, leaf 0, ECX (out of order, for now)
+ CpuFeatureAVX512VBMI = 2, // uses the bit for DTES64
+#endif
// used only to indicate that the CPU detection was initialised
QSimdInitialized = 0x80000000
};
-static const uint qCompilerCpuFeatures = 0
+static const quint64 qCompilerCpuFeatures = 0
+#if defined __SHA__
+ | (Q_UINT64_C(1) << CpuFeatureSHA)
+#endif
+#if defined __AES__
+ | (Q_UINT64_C(1) << CpuFeatureAES)
+#endif
#if defined __RTM__
- | RTM
+ | (Q_UINT64_C(1) << CpuFeatureRTM)
+#endif
+#ifdef __RDRND__
+ | (Q_UINT64_C(1) << CpuFeatureRDRAND)
+#endif
+#ifdef __RDSEED__
+ | (Q_UINT64_C(1) << CpuFeatureRDSEED)
+#endif
+#if defined __BMI__
+ | (Q_UINT64_C(1) << CpuFeatureBMI)
+#endif
+#if defined __BMI2__
+ | (Q_UINT64_C(1) << CpuFeatureBMI2)
+#endif
+#if defined __F16C__
+ | (Q_UINT64_C(1) << CpuFeatureF16C)
+#endif
+#if defined __POPCNT__
+ | (Q_UINT64_C(1) << CpuFeaturePOPCNT)
+#endif
+#if defined __MOVBE__ // GCC and Clang don't seem to define this
+ | (Q_UINT64_C(1) << CpuFeatureMOVBE)
+#endif
+#if defined __AVX512F__
+ | (Q_UINT64_C(1) << CpuFeatureAVX512F)
+#endif
+#if defined __AVX512CD__
+ | (Q_UINT64_C(1) << CpuFeatureAVX512CD)
+#endif
+#if defined __AVX512ER__
+ | (Q_UINT64_C(1) << CpuFeatureAVX512ER)
+#endif
+#if defined __AVX512PF__
+ | (Q_UINT64_C(1) << CpuFeatureAVX512PF)
+#endif
+#if defined __AVX512BW__
+ | (Q_UINT64_C(1) << CpuFeatureAVX512BW)
+#endif
+#if defined __AVX512DQ__
+ | (Q_UINT64_C(1) << CpuFeatureAVX512DQ)
+#endif
+#if defined __AVX512VL__
+ | (Q_UINT64_C(1) << CpuFeatureAVX512VL)
+#endif
+#if defined __AVX512IFMA__
+ | (Q_UINT64_C(1) << CpuFeatureAVX512IFMA)
+#endif
+#if defined __AVX512VBMI__
+ | (Q_UINT64_C(1) << CpuFeatureAVX512VBMI)
#endif
#if defined __AVX2__
- | AVX2
+ | (Q_UINT64_C(1) << CpuFeatureAVX2)
#endif
#if defined __AVX__
- | AVX
+ | (Q_UINT64_C(1) << CpuFeatureAVX)
#endif
#if defined __SSE4_2__
- | SSE4_2
+ | (Q_UINT64_C(1) << CpuFeatureSSE4_2)
#endif
#if defined __SSE4_1__
- | SSE4_1
+ | (Q_UINT64_C(1) << CpuFeatureSSE4_1)
#endif
#if defined __SSSE3__
- | SSSE3
+ | (Q_UINT64_C(1) << CpuFeatureSSSE3)
#endif
#if defined __SSE3__
- | SSE3
+ | (Q_UINT64_C(1) << CpuFeatureSSE3)
#endif
#if defined __SSE2__
- | SSE2
+ | (Q_UINT64_C(1) << CpuFeatureSSE2)
#endif
#if defined __ARM_NEON__
- | NEON
+ | (Q_UINT64_C(1) << CpuFeatureNEON)
#endif
#if defined __mips_dsp
- | DSP
+ | (Q_UINT64_C(1) << CpuFeatureDSP)
#endif
#if defined __mips_dspr2
- | DSPR2
+ | (Q_UINT64_C(1) << CpuFeatureDSPR2)
#endif
;
-extern Q_CORE_EXPORT QBasicAtomicInt qt_cpu_features;
+#ifdef Q_ATOMIC_INT64_IS_SUPPORTED
+extern Q_CORE_EXPORT QBasicAtomicInteger<quint64> qt_cpu_features[1];
+#else
+extern Q_CORE_EXPORT QBasicAtomicInteger<unsigned> qt_cpu_features[2];
+#endif
Q_CORE_EXPORT void qDetectCpuFeatures();
-static inline uint qCpuFeatures()
+static inline quint64 qCpuFeatures()
{
- int features = qt_cpu_features.load();
+ 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.load();
+ 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 uint(features);
+ return features;
}
-#define qCpuHasFeature(feature) ((qCompilerCpuFeatures & (feature)) || (qCpuFeatures() & (feature)))
+#define qCpuHasFeature(feature) ((qCompilerCpuFeatures & (Q_UINT64_C(1) << CpuFeature ## feature)) \
+ || (qCpuFeatures() & (Q_UINT64_C(1) << CpuFeature ## feature)))
#ifdef Q_PROCESSOR_X86
// Bit scan functions for x86
diff --git a/src/corelib/tools/qstring.cpp b/src/corelib/tools/qstring.cpp
index 8bb8953dde..e3a3cc79c6 100644
--- a/src/corelib/tools/qstring.cpp
+++ b/src/corelib/tools/qstring.cpp
@@ -2680,6 +2680,8 @@ bool operator==(const QString &s1, const QString &s2)
/*!
\overload operator==()
+ Returns \c true if this string is equal to \a other; otherwise
+ returns \c false.
*/
bool QString::operator==(QLatin1String other) const
{
@@ -2738,7 +2740,7 @@ bool operator<(const QString &s1, const QString &s2)
}
/*!
\overload operator<()
- \relates QString
+
Returns \c true if this string is lexically less than the parameter
string called \a other; otherwise returns \c false.
*/
@@ -2843,7 +2845,7 @@ bool QString::operator<(QLatin1String other) const
/*!
\overload operator>()
- \relates QString
+
Returns \c true if this string is lexically greater than the parameter
string \a other; otherwise returns \c false.
*/
@@ -3614,9 +3616,14 @@ int QString::count(const QString &str, Qt::CaseSensitivity cs) const
}
/*!
- \overload count()
+ \overload count()
- Returns the number of occurrences of character \a ch in the string.
+ Returns the number of occurrences of character \a ch in the string.
+
+ If \a cs is Qt::CaseSensitive (default), the search is
+ case sensitive; otherwise the search is case insensitive.
+
+ \sa contains(), indexOf()
*/
int QString::count(QChar ch, Qt::CaseSensitivity cs) const
diff --git a/src/corelib/tools/qstringbuilder.h b/src/corelib/tools/qstringbuilder.h
index 1dbc005bca..3d41aeee18 100644
--- a/src/corelib/tools/qstringbuilder.h
+++ b/src/corelib/tools/qstringbuilder.h
@@ -421,7 +421,7 @@ QString &operator+=(QString &a, const QStringBuilder<A, B> &b)
a.reserve(len);
QChar *it = a.data() + a.size();
QConcatenable< QStringBuilder<A, B> >::appendTo(b, it);
- a.resize(it - a.constData()); //may be smaller than len if there was conversion from utf8
+ a.resize(int(it - a.constData())); //may be smaller than len if there was conversion from utf8
return a;
}
diff --git a/src/corelib/tools/qtimezone.cpp b/src/corelib/tools/qtimezone.cpp
index 45ae23cdf5..900c8ff14e 100644
--- a/src/corelib/tools/qtimezone.cpp
+++ b/src/corelib/tools/qtimezone.cpp
@@ -310,7 +310,6 @@ Q_GLOBAL_STATIC(QTimeZoneSingleton, global_tz);
/*!
\typedef QTimeZone::OffsetDataList
- \relates QTimeZone
Synonym for QVector<OffsetData>.
*/