+void FastISelMap::emitInstructionCode(raw_ostream &OS,
+ const OperandsSignature &Operands,
+ const PredMap &PM,
+ const std::string &RetVTName) {
+ // Emit code for each possible instruction. There may be
+ // multiple if there are subtarget concerns. A reverse iterator
+ // is used to produce the ones with highest complexity first.
+
+ bool OneHadNoPredicate = false;
+ for (PredMap::const_reverse_iterator PI = PM.rbegin(), PE = PM.rend();
+ PI != PE; ++PI) {
+ const InstructionMemo &Memo = PI->second;
+ std::string PredicateCheck = Memo.PredicateCheck;
+
+ if (PredicateCheck.empty()) {
+ assert(!OneHadNoPredicate &&
+ "Multiple instructions match and more than one had "
+ "no predicate!");
+ OneHadNoPredicate = true;
+ } else {
+ if (OneHadNoPredicate) {
+ // FIXME: This should be a PrintError once the x86 target
+ // fixes PR21575.
+ PrintWarning("Multiple instructions match and one with no "
+ "predicate came before one with a predicate! "
+ "name:" + Memo.Name + " predicate: " +
+ PredicateCheck);
+ }
+ OS << " if (" + PredicateCheck + ") {\n";
+ OS << " ";
+ }
+
+ for (unsigned i = 0; i < Memo.PhysRegs->size(); ++i) {
+ if ((*Memo.PhysRegs)[i] != "")
+ OS << " BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DbgLoc, "
+ << "TII.get(TargetOpcode::COPY), "
+ << (*Memo.PhysRegs)[i] << ").addReg(Op" << i << ");\n";
+ }
+
+ OS << " return fastEmitInst_";
+ if (Memo.SubRegNo.empty()) {
+ Operands.PrintManglingSuffix(OS, *Memo.PhysRegs,
+ ImmediatePredicates, true);
+ OS << "(" << InstNS << Memo.Name << ", ";
+ OS << "&" << InstNS << Memo.RC->getName() << "RegClass";
+ if (!Operands.empty())
+ OS << ", ";
+ Operands.PrintArguments(OS, *Memo.PhysRegs);
+ OS << ");\n";
+ } else {
+ OS << "extractsubreg(" << RetVTName
+ << ", Op0, Op0IsKill, " << Memo.SubRegNo << ");\n";
+ }
+
+ if (!PredicateCheck.empty()) {
+ OS << " }\n";
+ }
+ }
+ // Return 0 if all of the possibilities had predicates but none
+ // were satisfied.
+ if (!OneHadNoPredicate)
+ OS << " return 0;\n";
+ OS << "}\n";
+ OS << "\n";
+}
+
+
+void FastISelMap::printFunctionDefinitions(raw_ostream &OS) {