if (SubOpIdx != -1)
Rec = dynamic_cast<DefInit*>(OI.MIOperandInfo->getArg(SubOpIdx))->getDef();
+ if (Rec->isSubClassOf("RegisterOperand")) {
+ // RegisterOperand may have an associated ParserMatchClass. If it does,
+ // use it, else just fall back to the underlying register class.
+ const RecordVal *R = Rec->getValue("ParserMatchClass");
+ if (R == 0 || R->getValue() == 0)
+ throw "Record `" + Rec->getName() +
+ "' does not have a ParserMatchClass!\n";
+
+ if (DefInit *DI= dynamic_cast<DefInit*>(R->getValue())) {
+ Record *MatchClass = DI->getDef();
+ if (ClassInfo *CI = AsmOperandClasses[MatchClass])
+ return CI;
+ }
+
+ // No custom match class. Just use the register class.
+ Record *ClassRec = Rec->getValueAsDef("RegClass");
+ if (!ClassRec)
+ throw TGError(Rec->getLoc(), "RegisterOperand `" + Rec->getName() +
+ "' has no associated register class!\n");
+ if (ClassInfo *CI = RegisterClassClasses[ClassRec])
+ return CI;
+ throw TGError(Rec->getLoc(), "register class has no class info!");
+ }
+
+
if (Rec->isSubClassOf("RegisterClass")) {
if (ClassInfo *CI = RegisterClassClasses[Rec])
return CI;