lib/CodeGen/ExecutionDepsFix.cpp

186   void collapse(DomainValue *dv, unsigned domain);
210   DomainValue *dv = Avail.empty() ?
214     dv->addDomain(domain);
215   assert(dv->Refs == 0 && "Reference count wasn't cleared");
216   assert(!dv->Next && "Chained DomainValue shouldn't have been recycled");
217   return dv;
258 /// Set LiveRegs[rx] = dv, updating reference counts.
259 void ExeDepsFix::setLiveReg(int rx, DomainValue *dv) {
263   if (LiveRegs[rx].Value == dv)
267   LiveRegs[rx].Value = retain(dv);
285   if (DomainValue *dv = LiveRegs[rx].Value) {
286     if (dv->isCollapsed())
287       dv->addDomain(domain);
288     else if (dv->hasDomain(domain))
289       collapse(dv, domain);
293       collapse(dv, dv->getFirstDomain());
304 /// registers using dv, they each get a unique collapsed DomainValue.
305 void ExeDepsFix::collapse(DomainValue *dv, unsigned domain) {
306   assert(dv->hasDomain(domain) && "Cannot collapse");
309   while (!dv->Instrs.empty())
310     TII->setExecutionDomain(dv->Instrs.pop_back_val(), domain);
311   dv->setSingleDomain(domain);
314   if (LiveRegs && dv->Refs > 1)
316       if (LiveRegs[rx].Value == dv)
616       if (DomainValue *dv = LiveRegs[rx].Value) {
617         // Bitmask of domains that dv and available have in common.
618         unsigned common = dv->getCommonDomains(available);
620         if (dv->isCollapsed()) {
669   DomainValue *dv = 0;
671     if (!dv) {
672       dv = Regs.pop_back_val().Value;
673       // Force the first dv to match the current instruction.
674       dv->AvailableDomains = dv->getCommonDomains(available);
675       assert(dv->AvailableDomains && "Domain should have been filtered");
681     if (Latest == dv || Latest->Next)
683     if (merge(dv, Latest))
692   // dv is the DomainValue we are going to use for this instruction.
693   if (!dv) {
694     dv = alloc();
695     dv->AvailableDomains = available;
697   dv->Instrs.push_back(mi);
699   // Finally set all defs and non-collapsed uses to dv. We must iterate through
708     if (!LiveRegs[rx].Value || (mo.isDef() && LiveRegs[rx].Value != dv)) {
710       setLiveReg(rx, dv);