+/// ComputeJoinedWeight - Set the weight of a live interval Joined
+/// after Other has been merged into it.
+void LiveInterval::ComputeJoinedWeight(const LiveInterval &Other) {
+ // If either of these intervals was spilled, the weight is the
+ // weight of the non-spilled interval. This can only happen with
+ // iterative coalescers.
+
+ if (weight == HUGE_VALF &&
+ !TargetRegisterInfo::isPhysicalRegister(reg)) {
+ // Remove this assert if you have an iterative coalescer
+ assert(0 && "Joining to spilled interval");
+ weight = Other.weight;
+ }
+ else if (Other.weight != HUGE_VALF) {
+ weight += Other.weight;
+ }
+ else {
+ // Otherwise the weight stays the same
+ // Remove this assert if you have an iterative coalescer
+ assert(0 && "Joining from spilled interval");
+ }
+}
+