Cross Reference: /external/swiftshader/third_party/LLVM/lib/CodeGen/RegAllocBasic.cpp

Lines Matching refs:VirtReg
125   virtual unsigned selectOrSplit(LiveInterval &VirtReg,
268     LiveInterval &VirtReg = *I->second;
270       PhysReg2LiveUnion[RegNum].unify(VirtReg);
272       enqueue(&VirtReg);
276 void RegAllocBase::assign(LiveInterval &VirtReg, unsigned PhysReg) {
277   DEBUG(dbgs() << "assigning " << PrintReg(VirtReg.reg, TRI)
279   assert(!VRM->hasPhys(VirtReg.reg) && "Duplicate VirtReg assignment");
280   VRM->assignVirt2Phys(VirtReg.reg, PhysReg);
282   PhysReg2LiveUnion[PhysReg].unify(VirtReg);
286 void RegAllocBase::unassign(LiveInterval &VirtReg, unsigned PhysReg) {
287   DEBUG(dbgs() << "unassigning " << PrintReg(VirtReg.reg, TRI)
289   assert(VRM->getPhys(VirtReg.reg) == PhysReg && "Inconsistent unassign");
290   PhysReg2LiveUnion[PhysReg].extract(VirtReg);
291   VRM->clearVirt(VirtReg.reg);
301   while (LiveInterval *VirtReg = dequeue()) {
302     assert(!VRM->hasPhys(VirtReg->reg) && "Register already assigned");
305     if (MRI->reg_nodbg_empty(VirtReg->reg)) {
306       DEBUG(dbgs() << "Dropping unused " << *VirtReg << '\n');
307       LIS->removeInterval(VirtReg->reg);
318                  << MRI->getRegClass(VirtReg->reg)->getName()
319                  << ':' << *VirtReg << '\n');
322     unsigned AvailablePhysReg = selectOrSplit(*VirtReg, SplitVRegs);
329       for (MachineRegisterInfo::reg_iterator I = MRI->reg_begin(VirtReg->reg);
338       VRM->assignVirt2Phys(VirtReg->reg,
339                  RegClassInfo.getOrder(MRI->getRegClass(VirtReg->reg)).front());
344       assign(*VirtReg, AvailablePhysReg);
367 unsigned RegAllocBase::checkPhysRegInterference(LiveInterval &VirtReg,
370     if (query(VirtReg, *AliasI).checkInterference())
377 void RegAllocBase::spillReg(LiveInterval& VirtReg, unsigned PhysReg,
379   LiveIntervalUnion::Query &Q = query(VirtReg, PhysReg);
403 // that interfere with VirtReg. The newly spilled or split live intervals are
406 RegAllocBase::spillInterferences(LiveInterval &VirtReg, unsigned PhysReg,
413     LiveIntervalUnion::Query &QAlias = query(VirtReg, *asI);
420         " interferences with " << VirtReg << "\n");
425     spillReg(VirtReg, *AliasI, SplitVRegs);
482 unsigned RABasic::selectOrSplit(LiveInterval &VirtReg,
489     RegClassInfo.getOrder(MRI->getRegClass(VirtReg.reg));
495     // VirtReg and its aliases.
496     unsigned interfReg = checkPhysRegInterference(VirtReg, PhysReg);
505     // The current VirtReg must either be spillable, or one of its interferences
507     if (interferingVirtReg->weight < VirtReg.weight ) {
515     if (!spillInterferences(VirtReg, *PhysRegI, SplitVRegs)) continue;
517     assert(checkPhysRegInterference(VirtReg, *PhysRegI) == 0 &&
523   // No other spill candidates were found, so spill the current VirtReg.
524   DEBUG(dbgs() << "spilling: " << VirtReg << '\n');
525   if (!VirtReg.isSpillable())
527   LiveRangeEdit LRE(VirtReg, SplitVRegs);