0c6487c74f
41a46cbb31f1622f7d1ff54c7a1c1ca701c1e754 Speed up deriveaddresses for large ranges (Pieter Wuille)
Pull request description:
`deriveaddresses` dumps all generated addresses into a single `FlatSigningProvider`, which is also used for looking up information for future derivations. @achow101 points out that the growing data structures may unnecessary increase lookup time for later derivations.
Fix this by separating the provider used for lookups (`key_provider`) and the one we dump things into.
This gives a 10x speedup for a range of 7000 elements, and probably a larger speedup for larger ranges.
ACKs for commit 41a46c:
achow101:
Regardless, I do think this is a good change, so utACK 41a46cbb31f1622f7d1ff54c7a1c1ca701c1e754
fanquake:
tACK 41a46cb
meshcollider:
utACK 41a46cbb31
Tree-SHA512: a1b894ce9d5195d8f9760f44acc6d67a90bb259283fd8c1524c38a222fe53e8c1d35b6653a508b121b7ad91e155c97d26c658f6bdcebf6c360546931e4a26a22
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