- << "static const char *getSubtargetFeatureName(unsigned Val) {\n"
- << " switch(Val) {\n";
- for (std::map<Record*, SubtargetFeatureInfo*>::const_iterator
- it = Info.SubtargetFeatures.begin(),
- ie = Info.SubtargetFeatures.end(); it != ie; ++it) {
- SubtargetFeatureInfo &SFI = *it->second;
- // FIXME: Totally just a placeholder name to get the algorithm working.
- OS << " case " << SFI.getEnumName() << ": return \""
- << SFI.TheDef->getValueAsString("PredicateName") << "\";\n";
+ << "static const char *getSubtargetFeatureName(unsigned Val) {\n";
+ if (!Info.SubtargetFeatures.empty()) {
+ OS << " switch(Val) {\n";
+ typedef std::map<Record*, SubtargetFeatureInfo*, LessRecordByID> RecFeatMap;
+ for (RecFeatMap::const_iterator it = Info.SubtargetFeatures.begin(),
+ ie = Info.SubtargetFeatures.end(); it != ie; ++it) {
+ SubtargetFeatureInfo &SFI = *it->second;
+ // FIXME: Totally just a placeholder name to get the algorithm working.
+ OS << " case " << SFI.getEnumName() << ": return \""
+ << SFI.TheDef->getValueAsString("PredicateName") << "\";\n";
+ }
+ OS << " default: return \"(unknown)\";\n";
+ OS << " }\n";
+ } else {
+ // Nothing to emit, so skip the switch
+ OS << " return \"(unknown)\";\n";