Edit->eliminateDeadDefs(DeadDefs, RegsToSpill);
// Get rid of deleted and empty intervals.
- for (unsigned i = RegsToSpill.size(); i != 0; --i) {
- unsigned Reg = RegsToSpill[i-1];
- if (!LIS.hasInterval(Reg)) {
- RegsToSpill.erase(RegsToSpill.begin() + (i - 1));
+ unsigned ResultPos = 0;
+ for (unsigned i = 0, e = RegsToSpill.size(); i != e; ++i) {
+ unsigned Reg = RegsToSpill[i];
+ if (!LIS.hasInterval(Reg))
continue;
- }
+
LiveInterval &LI = LIS.getInterval(Reg);
- if (!LI.empty())
+ if (LI.empty()) {
+ Edit->eraseVirtReg(Reg);
continue;
- Edit->eraseVirtReg(Reg);
- RegsToSpill.erase(RegsToSpill.begin() + (i - 1));
+ }
+
+ RegsToSpill[ResultPos++] = Reg;
}
+ RegsToSpill.erase(RegsToSpill.begin() + ResultPos, RegsToSpill.end());
DEBUG(dbgs() << RegsToSpill.size() << " registers to spill after remat.\n");
}