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776441152e
Following facebook/zstd#2545, I noticed that one field in `seq_t` is optional, and only used in combination with prefetching. (This may have contributed to static analyzer failure to detect correct initialization). I then wondered if it would be possible to rewrite the code so that this optional part is handled directly by the prefetching code rather than delegated as an option into `ZSTD_decodeSequence()`. This resulted into this refactoring exercise where the prefetching responsibility is better isolated into its own function and `ZSTD_decodeSequence()` is streamlined to contain strictly Sequence decoding operations. Incidently, due to better code locality, it reduces the need to send information around, leading to simplified interface, and smaller state structures. Port of facebook/zstd@f5434663ea Reported-by: Coverity (CID 1462271) Reviewed-by: Damian Szuberski <szuberskidamian@gmail.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de> Ported-by: Richard Yao <richard.yao@alumni.stonybrook.edu> Closes #14212 |
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