+ unsigned Start = I->start, End = I->end;
+ IP = std::upper_bound(IP, end(), Start);
+ // If the start of this range overlaps with an existing liverange, trim it.
+ if (IP != begin() && IP[-1].end > Start) {
+ if (IP[-1].valno != LHSValNo) {
+ ReplacedValNos.push_back(IP[-1].valno);
+ IP[-1].valno = LHSValNo; // Update val#.
+ }
+ Start = IP[-1].end;
+ // Trimmed away the whole range?
+ if (Start >= End) continue;
+ }
+ // If the end of this range overlaps with an existing liverange, trim it.
+ if (IP != end() && End > IP->start) {
+ if (IP->valno != LHSValNo) {
+ ReplacedValNos.push_back(IP->valno);
+ IP->valno = LHSValNo; // Update val#.
+ }
+ End = IP->start;
+ // If this trimmed away the whole range, ignore it.
+ if (Start == End) continue;
+ }
+