251     std::set<ArgPromotion::IndicesVector>::iterator Low;  in PrefixIn()  local
252     Low = Set.upper_bound(Indices);  in PrefixIn()
253     if (Low != Set.begin())  in PrefixIn()
254       Low--;  in PrefixIn()
260     return Low != Set.end() && IsPrefix(*Low, Indices);  in PrefixIn()
270   std::set<ArgPromotion::IndicesVector>::iterator Low;  in MarkIndicesSafe()  local
271   Low = Safe.upper_bound(ToMark);  in MarkIndicesSafe()
273   if (Low != Safe.begin())  in MarkIndicesSafe()
274     Low--;  in MarkIndicesSafe()
278   if (Low != Safe.end()) {  in MarkIndicesSafe()
279     if (IsPrefix(*Low, ToMark))  in MarkIndicesSafe()
285     ++Low;  in MarkIndicesSafe()
288   Low = Safe.insert(Low, ToMark);  in MarkIndicesSafe()
289   ++Low;  in MarkIndicesSafe()
292   while (Low != End && IsPrefix(ToMark, *Low)) {  in MarkIndicesSafe()
293     std::set<ArgPromotion::IndicesVector>::iterator Remove = Low;  in MarkIndicesSafe()
294     ++Low;  in MarkIndicesSafe()