Paul Hauner 21bcc8848d Add caching for state.eth1_data_votes (#919) ... ## Issue Addressed NA ## Proposed Changes Adds additional tree hash caching for `state.eth1_data_votes`. Presently, each time we tree hash the `BeaconState`, we recompute the `state.eth1_data_votes` tree in it's entirety. This is because we only previous had support for caching fixed-length lists. This PR adds the `Eth1DataVotesTreeHashCache` which provides caching for the `state.eth1_data_votes` list. The cache is aware of `SLOTS_PER_ETH1_VOTING_PERIOD` and will reset itself whenever that boundary is crossed. This cache adds a new (but somewhat fundamental) restriction to tree hash caching: *For some state `s`, `s.tree_hash_cache` is only valid for `s` or descendants of `s` that have been reached via state transitions that are faithful to the specification (invalid blocks are permitted, as long as they are faithfully processed).*		2020-07-24 02:19:47 +00:00
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benches.rs	Add caching for state.eth1_data_votes (#919)	2020-07-24 02:19:47 +00:00