Lines Matching defs:Seg

1190 void LiveRangeUpdater::add(LiveRange::Segment Seg) {
1196     LR->addSegmentToSet(Seg);
1201   if (!LastStart.isValid() || LastStart > Seg.start) {
1210   LastStart = Seg.start;
1212   // Advance ReadI until it ends after Seg.start.
1214   if (ReadI != E && ReadI->end <= Seg.start) {
1220       ReadI = WriteI = LR->find(Seg.start);
1222       while (ReadI != E && ReadI->end <= Seg.start)
1226   assert(ReadI == E || ReadI->end > Seg.start);
1229   if (ReadI != E && ReadI->start <= Seg.start) {
1230     assert(ReadI->valno == Seg.valno && "Cannot overlap different values");
1231     // Bail if Seg is completely contained in ReadI.
1232     if (ReadI->end >= Seg.end)
1234     // Coalesce into Seg.
1235     Seg.start = ReadI->start;
1239   // Coalesce as much as possible from ReadI into Seg.
1240   while (ReadI != E && coalescable(Seg, *ReadI)) {
1241     Seg.end = std::max(Seg.end, ReadI->end);
1245   // Try coalescing Spills.back() into Seg.
1246   if (!Spills.empty() && coalescable(Spills.back(), Seg)) {
1247     Seg.start = Spills.back().start;
1248     Seg.end = std::max(Spills.back().end, Seg.end);
1252   // Try coalescing Seg into WriteI[-1].
1253   if (WriteI != LR->begin() && coalescable(WriteI[-1], Seg)) {
1254     WriteI[-1].end = std::max(WriteI[-1].end, Seg.end);
1258   // Seg doesn't coalesce with anything, and needs to be inserted somewhere.
1260     *WriteI++ = Seg;
1266     LR->segments.push_back(Seg);
1269     Spills.push_back(Seg);