diff --git a/mlir/lib/Dialect/Vector/VectorTransforms.cpp b/mlir/lib/Dialect/Vector/VectorTransforms.cpp
--- a/mlir/lib/Dialect/Vector/VectorTransforms.cpp
+++ b/mlir/lib/Dialect/Vector/VectorTransforms.cpp
@@ -1348,7 +1348,6 @@
       auto targetExpr = getAffineDimExpr(idx < index ? idx : idx - 1, ctx);
       results.push_back(targetExpr);
     }
-    // The (...) -> () affine map has its own factory method.
     return AffineMap::get(map.getNumDims() - 1, 0, results, ctx);
   }