lib/Basic/SourceManager.cpp

1204   if (LastLineNoFileIDQuery == FID && LastLineNoContentCache->SourceLineCache &&
1205       LastLineNoResult < LastLineNoContentCache->SourceLineCache.size()) {
1206     const unsigned *SourceLineCache =
1207         LastLineNoContentCache->SourceLineCache.begin();
1208     unsigned LineStart = SourceLineCache[LastLineNoResult - 1];
1209     unsigned LineEnd = SourceLineCache[LastLineNoResult];
1375   /// SourceLineCache for it on demand.
1376   if (!Content->SourceLineCache) {
1384     Content->SourceLineCache =
1391   const unsigned *SourceLineCache = Content->SourceLineCache.begin();
1392   const unsigned *SourceLineCacheStart = SourceLineCache;
1393   const unsigned *SourceLineCacheEnd = Content->SourceLineCache.end();
1413       SourceLineCache = SourceLineCache+LastLineNoResult-1;
1419       if (SourceLineCache+5 < SourceLineCacheEnd) {
1420         if (SourceLineCache[5] > QueriedFilePos)
1421           SourceLineCacheEnd = SourceLineCache+5;
1422         else if (SourceLineCache+10 < SourceLineCacheEnd) {
1423           if (SourceLineCache[10] > QueriedFilePos)
1424             SourceLineCacheEnd = SourceLineCache+10;
1425           else if (SourceLineCache+20 < SourceLineCacheEnd) {
1426             if (SourceLineCache[20] > QueriedFilePos)
1427               SourceLineCacheEnd = SourceLineCache+20;
1432       if (LastLineNoResult < Content->SourceLineCache.size())
1433         SourceLineCacheEnd = SourceLineCache+LastLineNoResult+1;
1438       std::lower_bound(SourceLineCache, SourceLineCacheEnd, QueriedFilePos);
1726   // SourceLineCache for it on demand.
1731   if (!Content->SourceLineCache)
1732     Content->SourceLineCache =
1735   if (Line > Content->SourceLineCache.size()) {
1742   unsigned FilePos = Content->SourceLineCache[Line - 1];
2169     NumLineNumsComputed += bool(I->second->SourceLineCache);