diff --git a/lib/Transform/Noisy/ReduceNoiseOptimizer.cpp b/lib/Transform/Noisy/ReduceNoiseOptimizer.cpp
index 26fe070..3591fa5 100644
--- a/lib/Transform/Noisy/ReduceNoiseOptimizer.cpp
+++ b/lib/Transform/Noisy/ReduceNoiseOptimizer.cpp
@@ -17,7 +17,18 @@ struct ReduceNoiseOptimizer
     : impl::ReduceNoiseOptimizerBase<ReduceNoiseOptimizer> {
   using ReduceNoiseOptimizerBase::ReduceNoiseOptimizerBase;
 
-  void runOnOperation() { ReduceNoiseAnalysis analysis(getOperation()); }
+  void runOnOperation() {
+    // FIXME: Should have some way to mark failure
+    ReduceNoiseAnalysis analysis(getOperation());
+
+    getOperation()->walk([&](Operation *op) {
+      if (analysis.shouldInsertReduceNoise(op)) {
+        OpBuilder builder(getOperation());
+        auto reduceOp = builder.create<ReduceNoiseOp>(op->getLoc(), op->getResult(0));
+        op->getResult(0).replaceAllUsesWith(reduceOp.getResult());
+      }
+    });
+  }
 };
 
 } // namespace noisy