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Rose: further generalise literal dedupe work

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This commit is contained in:
Justin Viiret 2016-02-22 10:58:23 +11:00 committed by Matthew Barr
parent f519fd9bcd
commit 6bcccb4c5d
1 changed files with 28 additions and 22 deletions
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46
src/rose/rose_build_misc.cpp
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@ -680,7 +680,6 @@ bool RoseDedupeAuxImpl::requiresDedupeSupport(
const RoseGraph &g = tbi.g;
bool has_role = false;
bool has_suffix = false;
bool has_outfix = false;
@ -713,33 +712,40 @@ bool RoseDedupeAuxImpl::requiresDedupeSupport(
}
/* roles */
map<u32, u32> lits; // Literal ID -> count of occurrences.
const bool has_role = !roles.empty();
for (auto v : roles) {
if (has_role) {
return true; /* fear that multiple roles may trigger at same
offset */
for (const auto &lit : g[v].literals) {
lits[lit]++;
}
if (g[v].eod_accept) {
// Literals plugged into this EOD accept must be taken into account
// as well.
for (auto u : inv_adjacent_vertices_range(v, g)) {
for (const auto &lit : g[u].literals) {
lits[lit]++;
}
}
}
}
has_role = true;
/* literals */
if (g[v].literals.size() > 1) {
const auto &lits = g[v].literals;
DEBUG_PRINTF("vertex %zu lits: %s\n", g[v].idx,
as_string_list(lits).c_str());
for (auto it = begin(lits); it != end(lits); ++it) {
const auto &lit1 = tbi.literals.right.at(*it);
for (auto jt = next(it); jt != end(lits); ++jt) {
const auto &lit2 = tbi.literals.right.at(*jt);
if (literalsCouldRace(lit1, lit2)) {
DEBUG_PRINTF("literals could race\n");
for (const auto &m : lits) {
if (m.second > 1) {
DEBUG_PRINTF("lit %u used by >1 reporting roles\n", m.first);
return true;
}
}
}
}
if (g[v].eod_accept) {
if (in_degree(v, g) > 1) {
/* may actually map to a number of terminal vertices */
for (auto it = begin(lits); it != end(lits); ++it) {
const auto &lit1 = tbi.literals.right.at(it->first);
for (auto jt = next(it); jt != end(lits); ++jt) {
const auto &lit2 = tbi.literals.right.at(jt->first);
if (literalsCouldRace(lit1, lit2)) {
DEBUG_PRINTF("literals could race\n");
return true;
}
}