Add an OperandNamespace field to Target.td's Operand.

For targets to add their own operand types as needed, as advertised in
Operand's comment, they need to be able to specify an alternate namespace
for OperandType names too. This matches the RegisterOperand class.

llvm-svn: 256299

llvm/include/llvm/Target/Target.td

@@ -620,6 +620,7 @@ class Operand<ValueType ty> : DAGOperand {
   string EncoderMethod = "";
   string DecoderMethod = "";
   bit hasCompleteDecoder = 1;
+  string OperandNamespace = "MCOI";
   string OperandType = "OPERAND_UNKNOWN";
   dag MIOperandInfo = (ops);
 

llvm/utils/TableGen/CodeGenInstruction.cpp

@@ -78,6 +78,7 @@ CGIOperandList::CGIOperandList(Record *R) : TheDef(R) {
     } else if (Rec->isSubClassOf("Operand")) {
       PrintMethod = Rec->getValueAsString("PrintMethod");
       OperandType = Rec->getValueAsString("OperandType");
+      OperandNamespace = Rec->getValueAsString("OperandNamespace");
       // If there is an explicit encoder method, use it.
       EncoderMethod = Rec->getValueAsString("EncoderMethod");
       MIOpInfo = Rec->getValueAsDag("MIOperandInfo");