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Hi,</div>
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<br>
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Could someone take a look at these patches please?</div>
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<br>
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Thanks,</div>
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Jonathan</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> x265-devel <x265-devel-bounces@videolan.org> on behalf of Jonathan Wright <jonathan.wright@arm.com><br>
<b>Sent:</b> 10 June 2025 18:40<br>
<b>To:</b> x265-devel@videolan.org <x265-devel@videolan.org><br>
<b>Cc:</b> nd <nd@arm.com><br>
<b>Subject:</b> [x265] [PATCH 0/2] AArch64: Fix SVE DCT implementations</font>
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<div class="PlainText">Hi,<br>
<br>
This patch series fixes bugs in the Arm SVE 16x16 and 32x32 DCT<br>
implementations, and also mitigates a portion of the performance<br>
regression due to the fix. Both SVE DCT implementations are still<br>
sgnificantly faster than the equivalent Neon paths.<br>
<br>
Note that the DCT unit tests did not show these bugs. They were found<br>
after differences in encoded output videos were observed on Arm and<br>
x86 for veryslow, slower and slow encoding presets. With these patches<br>
applied encoded output matches for all speed presets.<br>
<br>
Thanks,<br>
Jonathan<br>
<br>
Jonathan Wright (2):<br>
AArch64: Fix SVE 16x16 and 32x32 DCT implementations<br>
AArch64: Specialize passes of 16x16 and 32x32 SVE DCTs<br>
<br>
source/common/aarch64/dct-prim-sve.cpp | 338 ++++++++++++++++++++++---<br>
1 file changed, 306 insertions(+), 32 deletions(-)<br>
<br>
-- <br>
2.39.5 (Apple Git-154)<br>
<br>
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