feat: improve header validation speed #6510
Merged
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Description
Improves the header validation speed by caching the gen block hash creation.
Motivation and Context
This is very noticeable during sync, but it takes about 10ms to create the gen block, and if you only want the hash, this can speed up validation a lot if you do this repeatedly.
After this pr, the validation of
Sha3x: 10ms -> 10us
RandomX: 20ms -> 10ms
How Has This Been Tested?
Manual