// Compute the set of registers supporting each SubRegIndex.
SubReg2SetMap SRSets;
- for (CodeGenRegister::Set::iterator RI = RC.getMembers().begin(),
+ for (CodeGenRegister::Set::const_iterator RI = RC.getMembers().begin(),
RE = RC.getMembers().end(); RI != RE; ++RI) {
- CodeGenRegister::SubRegMap SRM = (*RI)->getSubRegs();
- for (CodeGenRegister::SubRegMap::iterator I = SRM.begin(), E = SRM.end();
- I != E; ++I)
+ const CodeGenRegister::SubRegMap &SRM = (*RI)->getSubRegs();
+ for (CodeGenRegister::SubRegMap::const_iterator I = SRM.begin(),
+ E = SRM.end(); I != E; ++I)
SRSets[I->first].insert(*RI);
}