[codex] Optimize global graph key hashing#3
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Summary
GlobalOpKeyso derived value hashing no longer recursively walks the full input tree on every hash.Arc<GlobalOpKey>so sibling outputs share the same precomputed operation key.PartialEqstill compares the full structure.Impact
This reduces fixed overhead in graph materialization/interner hot paths without changing graph identity semantics. Downstream constructors need to use
GlobalOpKey::newand wrap derived producers inArc.Validation
cargo fmt --allcargo clippy --workspacecargo test --releasecargo test --doc --release