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Put common aliases in Map/Set instead of switch over strings (#26551)
This is a follow up to #26546 This is strictly a perf optimization since we know that switches over strings aren't optimally implemented in current engines. Basically they're a sequence of ifs. As a result, we're better off putting the unusual cases in a Map and the very common cases in the beginning of the switch. We might be better off putting very common cases in explicit ifs - just in case the engine does optimize switches to a hash table which is potentially worse. --------- Co-authored-by: Sophie Alpert <git@sophiebits.com>
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