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⚡ optimize: use slice fill for code length repetitions in decompressor#428

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404Setup merged 1 commit intomainfrom
optimize-dynamic-header-loops-9104853597736516714
Apr 29, 2026
Merged

⚡ optimize: use slice fill for code length repetitions in decompressor#428
404Setup merged 1 commit intomainfrom
optimize-dynamic-header-loops-9104853597736516714

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Optimized the Huffman code length decoding in read_dynamic_huffman_header by replacing manual repetition loops with slice fill. This reduces overhead by eliminating per-element bounds checks and enabling potentially faster block memory operations. Memory safety and original functional behavior are preserved through careful bounds clamping with min(rep_count, total_syms - i).


PR created automatically by Jules for task 9104853597736516714 started by @404Setup

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In \`read_dynamic_huffman_header\`, the loops used to repeat symbol lengths (codes 16, 17, and 18) were doing per-element assignments and bounds checks. Replacing these with \`slice::fill\` is more idiomatic and performant, as it allows the compiler to optimize the fill operation and avoids unnecessary branching. Safety is maintained by using \`min\` to clamp the fill length to the remaining number of symbols.
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@404Setup 404Setup merged commit 97a5bfd into main Apr 29, 2026
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@404Setup 404Setup deleted the optimize-dynamic-header-loops-9104853597736516714 branch April 29, 2026 07:09
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