+void RegAllocBase::assign(LiveInterval &VirtReg, unsigned PhysReg) {
+ DEBUG(dbgs() << "assigning " << PrintReg(VirtReg.reg, TRI)
+ << " to " << PrintReg(PhysReg, TRI) << '\n');
+ assert(!VRM->hasPhys(VirtReg.reg) && "Duplicate VirtReg assignment");
+ VRM->assignVirt2Phys(VirtReg.reg, PhysReg);
+ MRI->setPhysRegUsed(PhysReg);
+ PhysReg2LiveUnion[PhysReg].unify(VirtReg);
+ ++NumAssigned;
+}
+
+void RegAllocBase::unassign(LiveInterval &VirtReg, unsigned PhysReg) {
+ DEBUG(dbgs() << "unassigning " << PrintReg(VirtReg.reg, TRI)
+ << " from " << PrintReg(PhysReg, TRI) << '\n');
+ assert(VRM->getPhys(VirtReg.reg) == PhysReg && "Inconsistent unassign");
+ PhysReg2LiveUnion[PhysReg].extract(VirtReg);
+ VRM->clearVirt(VirtReg.reg);
+ ++NumUnassigned;
+}
+