Katana_mirror/katie
1
0
Fork 0
mirror of https://bitbucket.org/smil3y/katie.git synced 2025-02-24 19:02:59 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

unroll qt_memfill<T,T>() to 8 operations per-loop when possible

Browse source 
Signed-off-by: Ivailo Monev <xakepa10@gmail.com>
This commit is contained in:
Ivailo Monev 2022-02-28 21:41:30 +02:00
parent 1cda165044
commit d36bee65a4
1 changed files with 13 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
src/gui/painting/qdrawhelper_p.h
View file

@ -372,8 +372,19 @@ inline quint16 qt_colorConvert(const quint32 color, const quint16 dummy)
template <class T>
inline void qt_memfill(T *dest, const T color, int count)
{
while (count--)
*dest++ = color;
int n = (count + 7) / 8;
switch (count & 0x07)
{
case 0: do { *dest++ = color;
case 7: *dest++ = color;
case 6: *dest++ = color;
case 5: *dest++ = color;
case 4: *dest++ = color;
case 3: *dest++ = color;
case 2: *dest++ = color;
case 1: *dest++ = color;
} while (--n > 0);
}
}
template <class T>
@ -399,7 +410,6 @@ inline void qt_memconvert(DST *dest, const SRC *src, int count)
Q_ASSERT(sizeof(DST) != sizeof(SRC));
Q_ASSERT(sizeof(DST) == sizeof(quint16) || sizeof(DST) == sizeof(quint32));
Q_ASSERT(sizeof(SRC) == sizeof(quint16) || sizeof(SRC) == sizeof(quint32));
/* Duff's device */
int n = (count + 7) / 8;
switch (count & 0x07)
{