264     auto IsNonISAExtFeature = [](StringRef Feature) {  in initFeatureMap()  argument
265       assert(Feature.size() > 1 && (Feature[0] == '+' || Feature[0] == '-'));  in initFeatureMap()
266       StringRef Ext = Feature.substr(1); // drop the +/-  in initFeatureMap()
316 bool RISCVTargetInfo::hasFeature(StringRef Feature) const {  in hasFeature()
318   auto Result = llvm::StringSwitch<std::optional<bool>>(Feature)  in hasFeature()
329   return ISAInfo->hasExtension(Feature);  in hasFeature()
415   for (auto &Feature : AttrFeatures) {  in parseTargetAttr()  local
416     Feature = Feature.trim();  in parseTargetAttr()
417     StringRef AttrString = Feature.split("=").second.trim();  in parseTargetAttr()
419     if (Feature.starts_with("arch=")) {  in parseTargetAttr()
446     } else if (Feature.starts_with("cpu=")) {  in parseTargetAttr()
460     } else if (Feature.starts_with("tune=")) {  in parseTargetAttr()