| Commit message (Collapse) | Author | Age | Files | Lines |
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We need to do bounds comparison on the actual offset we're going to use
with _mm_load_si128 to read 16 bytes from memory (even though we won't
use the trailing bytes in the end).
Task-number: QTBUG-28324
(cherry-picked from qtbase commit 52619ae7787b3c4febb73a02afa623b12edabc97)
Change-Id: I705ae191312e5ffe25e45caea71ada73ec97f68d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Change-Id: I52bf8ef0447b701b4ebf7d7d240013a72adb9425
Reviewed-by: Akseli Salovaara <akseli.salovaara@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
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Change copyrights and license headers from Nokia to Digia
Change-Id: I280c0a575987d1770e354b4948f1d4d767d711ea
Reviewed-by: Simo Fält <simo.falt@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
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- Replace Nokia contact email address with Qt Project website.
- Remove "All rights reserved" line from license headers.
As in the past, to avoid rewriting various autotests that contain
line-number information, an extra blank line has been inserted at the
end of the license text to ensure that this commit does not change the
total number of lines in the license header.
Change-Id: Ie7ba62011752fcb149b99b26317c54f2a0cfa931
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
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Simple search and replace. This commit doesn't touch 3rd-party files,
nor translations (where the change is not so simple and will be handled
in a separate commit).
Change-Id: I4e48513b8078a44a8cd272326685b25338890148
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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Updated version of LGPL and FDL licenseheaders.
Apply release phase licenseheaders for all source files.
Reviewed-by: Trust Me
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Reviewed-by: Trust Me
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Memory is allocated on 16 bytes boundaries. We can do the
aligned load without risking a invalid memory access.
This simplify the code.
Reviewed-by: Samuel Rødal
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Qt does not build on PowerPC when compiling for both x86 and PPC on Mac.
The compiler is invoked only once for both architecture so the defines
are there in order to get the optimized path for x86. Those defines
needs to be removed from the compilation environment when the target
is set to PPC by GCC.
Reviewed-by: Kent Hansen
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The data loaded for the first were incorrect because the offset was
incorrect. The correct offset should be up to the alignment point.
Instead of trying to load a temporary array, we just move one vector
further since we know reading there is always safe.
Reviewed-by: Andreas Kling
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SSSE3 provides two tools to improve the blending speed over SSE2:
-palignr
-byte permutation
The alignement is enforced on src and dst with palignr to always make
aligned access.
The extraction of the alpha mask is done with a byte permutation in
order to save two instructions per cycle.
On Atom, this patch gives between 0% (aligned src) to 10% of
improvement (unaligned 4 and 12 bytes).
On Core 2, this patch gives consistently 8% to 10% of improvement
for every miss-alignment.
Reviewed-by: Samuel Rødal
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