perf(query): pre-size slices in expansion helpers#9722
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Pre-size known-length slices/maps in getPredsFromVals, expandSubgraph ACL intersection, getPredicatesFromTypes and filterUidPredicates. Estimates are never undersized; behavior unchanged. BenchmarkGetPredsFromVals (representative): B/op -41%, time -31%.
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Pre-size known-length slices/maps in
getPredsFromVals,expandSubgraphACL intersection,getPredicatesFromTypesandfilterUidPredicates. Estimates are never undersized; behavior unchanged.BenchmarkGetPredsFromVals(representative): B/op -41%, time -31%.Independent change; branched from
4b9b399d. Verified: package unit tests pass + Go benchmark (benchstat, p<0.01). Single-thread microbenchmarks; not yet run through the Docker integration suite.