diff --git a/mlir/lib/IR/AsmPrinter.cpp b/mlir/lib/IR/AsmPrinter.cpp
--- a/mlir/lib/IR/AsmPrinter.cpp
+++ b/mlir/lib/IR/AsmPrinter.cpp
@@ -923,8 +923,7 @@
 };
 } // namespace
 
-SSANameState::SSANameState(
-    Operation *op, const OpPrintingFlags &printerFlags)
+SSANameState::SSANameState(Operation *op, const OpPrintingFlags &printerFlags)
     : printerFlags(printerFlags) {
   llvm::SaveAndRestore<unsigned> valueIDSaver(nextValueID);
   llvm::SaveAndRestore<unsigned> argumentIDSaver(nextArgumentID);
@@ -2711,7 +2710,11 @@
     // Check to see if this is a known operation. If so, use the registered
     // custom printer hook.
     if (auto opInfo = op->getRegisteredInfo()) {
-      opInfo->printAssembly(op, *this, defaultDialectStack.back());
+      StringRef name = op->getName().getStringRef();
+      if (llvm::count(name, '.') > 1)
+        opInfo->printAssembly(op, *this, "");
+      else
+        opInfo->printAssembly(op, *this, defaultDialectStack.back());
       return;
     }
     // Otherwise try to dispatch to the dialect, if available.