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igzip/riscv64: Optimize adler32_rvv for VLEN=128#389

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leiwen2025:optimize_vlen128
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igzip/riscv64: Optimize adler32_rvv for VLEN=128#389
leiwen2025 wants to merge 0 commit intointel:masterfrom
leiwen2025:optimize_vlen128

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This PR optimizes the adler32_rvv implementation for vlen=128.

The optimization has been verified on the SG2044 platform:

SG2044:
        new: adler32_warm: runtime =    3062392 usecs, bandwidth 25988 MB in 3.0624 sec = 8486.24 MB/s
        old: adler32_warm: runtime =    3062471 usecs, bandwidth 23095 MB in 3.0625 sec = 7541.43 MB/s

@leiwen2025 leiwen2025 closed this Feb 3, 2026
@leiwen2025 leiwen2025 deleted the optimize_vlen128 branch February 3, 2026 08:24
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