+void InstrInfoEmitter::EmitOperandInfo(std::ostream &OS,
+ OperandInfoMapTy &OperandInfoIDs) {
+ // ID #0 is for no operand info.
+ unsigned OperandListNum = 0;
+ OperandInfoIDs[std::vector<std::string>()] = ++OperandListNum;
+
+ OS << "\n";
+ const CodeGenTarget &Target = CDP.getTargetInfo();
+ for (CodeGenTarget::inst_iterator II = Target.inst_begin(),
+ E = Target.inst_end(); II != E; ++II) {
+ std::vector<std::string> OperandInfo = GetOperandInfo(II->second);
+ unsigned &N = OperandInfoIDs[OperandInfo];
+ if (N != 0) continue;
+
+ N = ++OperandListNum;
+ OS << "static const TargetOperandInfo OperandInfo" << N << "[] = { ";
+ for (unsigned i = 0, e = OperandInfo.size(); i != e; ++i)
+ OS << "{ " << OperandInfo[i] << " }, ";
+ OS << "};\n";
+ }
+}
+
+void InstrInfoEmitter::DetectRegisterClassBarriers(std::vector<Record*> &Defs,
+ const std::vector<CodeGenRegisterClass> &RCs,
+ std::vector<Record*> &Barriers) {
+ std::set<Record*> DefSet;
+ unsigned NumDefs = Defs.size();
+ for (unsigned i = 0; i < NumDefs; ++i)
+ DefSet.insert(Defs[i]);
+
+ for (unsigned i = 0, e = RCs.size(); i != e; ++i) {
+ const CodeGenRegisterClass &RC = RCs[i];
+ unsigned NumRegs = RC.Elements.size();
+ if (NumRegs > NumDefs)
+ continue; // Can't possibly clobber this RC.
+
+ bool Clobber = true;
+ for (unsigned j = 0; j < NumRegs; ++j) {
+ Record *Reg = RC.Elements[j];
+ if (!DefSet.count(Reg)) {
+ Clobber = false;
+ break;
+ }
+ }
+ if (Clobber)
+ Barriers.push_back(RC.TheDef);
+ }
+}
+
+//===----------------------------------------------------------------------===//
+// Main Output.
+//===----------------------------------------------------------------------===//