Improve tblgen code cleanliness: create an unknown_class, from which the unknown def inherits. Make tblgen check for that class, rather than checking for the def itself.

llvm-svn: 163664

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/utils/TableGen/CodeGenInstruction.cpp b/llvm/utils/TableGen/CodeGenInstruction.cpp
index 38e2b832f2f..836279b89ab 100644
--- a/llvm/utils/TableGen/CodeGenInstruction.cpp
+++ b/llvm/utils/TableGen/CodeGenInstruction.cpp
@@ -101,7 +101,7 @@ CGIOperandList::CGIOperandList(Record *R) : TheDef(R) {
     } else if (Rec->isSubClassOf("RegisterClass")) {
       OperandType = "OPERAND_REGISTER";
     } else if (!Rec->isSubClassOf("PointerLikeRegClass") &&
-               Rec->getName() != "unknown")
+               !Rec->isSubClassOf("unknown_class"))
       throw "Unknown operand class '" + Rec->getName() +
       "' in '" + R->getName() + "' instruction!";