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Add autodetection of ppc64 architectures

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That allows 'make -j profile-build' work on ppc64 architectures, setting the use of
the appropriate SIMD extension, Altivec or VSX.
For VSX, gcc allows to map SSE2 intrinsics and get benefit of the existing SIMD code.

On PowerMac G5, using altivec provides a performance improvement of 30%.
On Talos 2, using vsx provides a performance improvement of 120%.

closes https://github.com/official-stockfish/Stockfish/pull/5624

No functional change
This commit is contained in:
Mathias Parnaudeau
2024-10-05 15:28:39 +02:00
committed by Disservin
parent 76923bb6fe
commit d4358ddba7
3 changed files with 59 additions and 2 deletions
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@@ -143,6 +143,7 @@ Maciej Żenczykowski (zenczykowski)
Malcolm Campbell (xoto10)
Mark Tenzer (31m059)
marotear
Mathias Parnaudeau (mparnaudeau)
Matt Ginsberg (mattginsberg)
Matthew Lai (matthewlai)
Matthew Sullivan (Matt14916)