Performance improvements for AMD64 and Generic#205
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Avoids per-block copies of [80]uint32 m1 (320B), DvInfo.Dm (320B), [3][5]uint32 cs (60B) and [5]uint32 h (20B) through checkCollision, hasCollided, rectifyCompressionState, and ubc.CalculateDvMask. Hash8K (SHA-NI) -12.6%, Hash1K -14.5%, Hash320Bytes -11.6%. Assisted-by: Claude Opus 4.7 <[email protected]> Signed-off-by: Paulo Gomes <[email protected]>
Four VPEXTRD's serial on the source register are replaced with one VPSHUFD (reverse dword order) + one VMOVDQU. Same memory layout, fewer store-port µops. Hash320Bytes (SHA-NI) -4.0%, Hash1K -2.3%, Hash8K -1.6%. Entire-Checkpoint: d009daa58401 Assisted-by: Claude Opus 4.7 <[email protected]> Signed-off-by: Paulo Gomes <[email protected]>
Signed-off-by: Paulo Gomes <[email protected]>
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Performance optimisations:
VPEXTRDwithVPSHUFD+VMOVDQU.Benchstat