Parse the operand list of the instruction. We currently support register and immediate operands.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@15390 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/CodeGenTarget.cpp b/utils/TableGen/CodeGenTarget.cpp
index 422e8d0..eef6afe 100644
--- a/utils/TableGen/CodeGenTarget.cpp
+++ b/utils/TableGen/CodeGenTarget.cpp
@@ -129,16 +129,47 @@
isTwoAddress = R->getValueAsBit("isTwoAddress");
isTerminator = R->getValueAsBit("isTerminator");
-
- //TODO: Parse OperandList
try {
DagInit *DI = R->getValueAsDag("OperandList");
- // Cannot handle instructions with operands yet.
- if (DI->getNumArgs())
- AsmString.clear();
+ for (unsigned i = 0, e = DI->getNumArgs(); i != e; ++i)
+ if (DefInit *Arg = dynamic_cast<DefInit*>(DI->getArg(i))) {
+ Record *Rec = Arg->getDef();
+ MVT::ValueType Ty;
+ if (Rec->isSubClassOf("RegisterClass"))
+ Ty = getValueType(Rec->getValueAsDef("RegType"));
+ else if (Rec->getName() == "i8imm")
+ Ty = MVT::i8;
+ else if (Rec->getName() == "i16imm")
+ Ty = MVT::i16;
+ else if (Rec->getName() == "i32imm")
+ Ty = MVT::i32;
+ else if (Rec->getName() == "i64imm")
+ Ty = MVT::i64;
+ else
+ throw "Unknown operand class '" + Rec->getName() +
+ "' in instruction '" + R->getName() + "' instruction!";
+
+ OperandList.push_back(OperandInfo(Rec, Ty, DI->getArgName(i)));
+ } else {
+ throw "Illegal operand for the '" + R->getName() + "' instruction!";
+ }
} catch (...) {
+ // Error parsing operands list, just ignore it.
+ AsmString.clear();
+ OperandList.clear();
}
}
+
+/// getOperandNamed - Return the index of the operand with the specified
+/// non-empty name. If the instruction does not have an operand with the
+/// specified name, throw an exception.
+unsigned CodeGenInstruction::getOperandNamed(const std::string &Name) const {
+ assert(!Name.empty() && "Cannot search for operand with no name!");
+ for (unsigned i = 0, e = OperandList.size(); i != e; ++i)
+ if (OperandList[i].Name == Name) return i;
+ throw "Instruction '" + TheDef->getName() +
+ "' does not have an operand named '$" + Name + "'!";
+}