diff --git a/mlir/lib/Transforms/Utils/InliningUtils.cpp b/mlir/lib/Transforms/Utils/InliningUtils.cpp
--- a/mlir/lib/Transforms/Utils/InliningUtils.cpp
+++ b/mlir/lib/Transforms/Utils/InliningUtils.cpp
@@ -200,7 +200,7 @@
 
   // Collect all the inlined operations.
   for (auto &block : newBlocks)
-    block.walk([&](Operation *op) { inlinedOps.append(op); });
+    inlinedOps.append(block.begin(), block.end())
 
   // Handle the case where only a single block was inlined.
   if (std::next(newBlocks.begin()) == newBlocks.end()) {