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re-add explanation

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divinity76 2024-02-01 10:50:45 +01:00 committed by GitHub
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commit 209a5832ae
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c/blake3.c
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@ -341,7 +341,11 @@ INLINE void compress_subtree_to_parent_node(
size_t num_cvs = blake3_compress_subtree_wide(input, input_len, key,
chunk_counter, flags, cv_array);
assert(num_cvs <= MAX_SIMD_DEGREE_OR_2);
// This condition is always true, and we just
// asserted it above. But GCC can't tell that it's always true, and if NDEBUG
// is set on platforms where MAX_SIMD_DEGREE_OR_2 == 2, GCC emits spurious
// warnings here. GCC 8.5 is particularly sensitive, so if you're changing
// this code, test it against that version.
#if MAX_SIMD_DEGREE_OR_2 > 2
// If MAX_SIMD_DEGREE_OR_2 is greater than 2 and there's enough input,
// compress_subtree_wide() returns more than 2 chaining values. Condense