diff --git a/mlir/lib/Dialect/Linalg/Transforms/Fusion.cpp b/mlir/lib/Dialect/Linalg/Transforms/Fusion.cpp
--- a/mlir/lib/Dialect/Linalg/Transforms/Fusion.cpp
+++ b/mlir/lib/Dialect/Linalg/Transforms/Fusion.cpp
@@ -782,12 +782,6 @@
   return fusableDependences;
 }
 
-static bool isZero(Value v) {
-  if (auto cst = v.getDefiningOp<ConstantIndexOp>())
-    return cst.getValue() == 0;
-  return false;
-}
-
 /// Tile the fused loops in the root operation, by setting the tile sizes for
 /// all other loops to zero (those will be tiled later).
 static Optional<TiledLinalgOp> tileRootOperation(