OS << " return 0;\n}\n\n";
OS << "unsigned " << ClassName
- << "::getSubRegIndex(unsigned RegNo, unsigned SubRegNo) const {\n"
- << " switch (RegNo) {\n"
- << " default:\n return 0;\n";
- for (unsigned i = 0, e = Regs.size(); i != e; ++i) {
- const CodeGenRegister::SubRegMap &SRM = Regs[i]->getSubRegs();
- if (SRM.empty())
- continue;
- OS << " case " << getQualifiedName(Regs[i]->TheDef) << ":\n";
- for (CodeGenRegister::SubRegMap::const_iterator ii = SRM.begin(),
- ie = SRM.end(); ii != ie; ++ii)
- OS << " if (SubRegNo == " << getQualifiedName(ii->second->TheDef)
- << ") return " << ii->first->getQualifiedName() << ";\n";
- OS << " return 0;\n";
+ << "::getSubRegIndex(unsigned RegNo, unsigned SubRegNo) const {\n";
+ if (SubRegIndices.size()) {
+ OS << " for (unsigned I = 0; I != array_lengthof("
+ << TargetName << "SubRegTable[0]); ++I)\n"
+ << " if (" << TargetName << "SubRegTable[RegNo - 1][I] == SubRegNo)\n"
+ << " return I + 1;\n";
}
- OS << " };\n";
OS << " return 0;\n";
OS << "}\n\n";