lib/CodeGen/ExecutionDomainFix.cpp

70 void ExecutionDomainFix::setLiveReg(int rx, DomainValue *dv) {
71   assert(unsigned(rx) < NumRegs && "Invalid index");
74   if (LiveRegs[rx] == dv)
76   if (LiveRegs[rx])
77     release(LiveRegs[rx]);
78   LiveRegs[rx] = retain(dv);
81 void ExecutionDomainFix::kill(int rx) {
82   assert(unsigned(rx) < NumRegs && "Invalid index");
84   if (!LiveRegs[rx])
87   release(LiveRegs[rx]);
88   LiveRegs[rx] = nullptr;
91 void ExecutionDomainFix::force(int rx, unsigned domain) {
92   assert(unsigned(rx) < NumRegs && "Invalid index");
94   if (DomainValue *dv = LiveRegs[rx]) {
103       assert(LiveRegs[rx] && "Not live after collapse?");
104       LiveRegs[rx]->addDomain(domain);
108     setLiveReg(rx, alloc(domain));
122     for (unsigned rx = 0; rx != NumRegs; ++rx)
123       if (LiveRegs[rx] == dv)
124         setLiveReg(rx, alloc(domain));
144   for (unsigned rx = 0; rx != NumRegs; ++rx) {
146     if (LiveRegs[rx] == B)
147       setLiveReg(rx, A);
178     for (unsigned rx = 0; rx != NumRegs; ++rx) {
179       DomainValue *pdv = resolve(Incoming[rx]);
182       if (!LiveRegs[rx]) {
183         setLiveReg(rx, pdv);
188       if (LiveRegs[rx]->isCollapsed()) {
190         unsigned Domain = LiveRegs[rx]->getFirstDomain();
198         merge(LiveRegs[rx], pdv);
200         force(rx, pdv->getFirstDomain());
246     for (int rx : regIndices(MO.getReg())) {
247       // This instruction explicitly defines rx.
248       LLVM_DEBUG(dbgs() << printReg(RC->getRegister(rx), TRI) << ":\t" << *MI);
252         kill(rx);
265     for (int rx : regIndices(mo.getReg())) {
266       force(rx, domain);
275     for (int rx : regIndices(mo.getReg())) {
276       kill(rx);
277       force(rx, domain);
296       for (int rx : regIndices(mo.getReg())) {
297         DomainValue *dv = LiveRegs[rx];
311           used.push_back(rx);
315           kill(rx);
330   for (int rx : used) {
332     DomainValue *&LR = LiveRegs[rx];
335       kill(rx);
340     const int Def = RDA->getReachingDef(mi, RC->getRegister(rx));
344     Regs.insert(I, rx);
386     for (int rx : regIndices(mo.getReg())) {
387       if (!LiveRegs[rx] || (mo.isDef() && LiveRegs[rx] != dv)) {
388         kill(rx);
389         setLiveReg(rx, dv);