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smallwrite: bfs ordering, refine daddy selection

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This commit is contained in:
Justin Viiret
2017-04-11 13:56:51 +10:00
committed by Matthew Barr
parent 3b3f6b739c
commit 10f52346ca
2 changed files with 18 additions and 3 deletions
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14
src/nfa/mcclellancompile.cpp
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@@ -841,9 +841,17 @@ void find_better_daddy(dfa_info &info, dstate_id_t curr_id, bool using8bit,
flat_set<dstate_id_t> hinted;
if (trust_daddy_states) {
hinted.insert(currState.daddy);
addIfEarlier(hinted, info.raw.start_floating, curr_id);
addIfEarlier(hinted, info.raw.start_anchored, curr_id);
// Use the daddy already set for this state so long as it isn't already
// a Sherman state.
if (!info.is_sherman(currState.daddy)) {
hinted.insert(currState.daddy);
} else {
// Fall back to granddaddy, which has already been processed (due
// to BFS ordering) and cannot be a Sherman state.
dstate_id_t granddaddy = info.states[currState.daddy].daddy;
assert(!info.is_sherman(granddaddy));
hinted.insert(granddaddy);
}
} else {
hinted = find_daddy_candidates(info, curr_id);
}