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opt: Skip branches with worse weight

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Once we exceed the weight of the current best selection, we can always
shift as adding more inputs can never yield a better solution.
This commit is contained in:
Murch
2024-01-08 15:26:21 -05:00
parent d68bc74fb2
commit 5f84f3cc04
2 changed files with 4 additions and 1 deletions
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3
src/wallet/coinselection.cpp
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@@ -413,6 +413,9 @@ util::Result<SelectionResult> CoinGrinder(std::vector<OutputGroup>& utxo_pool, c
// max_weight exceeded: SHIFT
max_tx_weight_exceeded = true;
should_shift = true;
} else if (curr_weight > best_selection_weight) {
// Worse weight than best solution. More UTXOs only increase weight: SHIFT
should_shift = true;
} else if (curr_amount >= total_target) {
// Success, adding more weight cannot be better: SHIFT
should_shift = true;