tblgen: Use semantically correct RTTI functions.
Also, some minor cleanup.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165647 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/AsmWriterEmitter.cpp b/utils/TableGen/AsmWriterEmitter.cpp
index 1497074..9e453e0 100644
--- a/utils/TableGen/AsmWriterEmitter.cpp
+++ b/utils/TableGen/AsmWriterEmitter.cpp
@@ -792,7 +792,7 @@
if (!R->getValueAsBit("EmitAlias"))
continue; // We were told not to emit the alias, but to emit the aliasee.
const DagInit *DI = R->getValueAsDag("ResultInst");
- const DefInit *Op = dyn_cast<DefInit>(DI->getOperator());
+ const DefInit *Op = cast<DefInit>(DI->getOperator());
AliasMap[getQualifiedName(Op->getDef())].push_back(Alias);
}