diff --git a/mlir/include/mlir/Dialect/AffineOps/AffineOps.td b/mlir/include/mlir/Dialect/AffineOps/AffineOps.td
--- a/mlir/include/mlir/Dialect/AffineOps/AffineOps.td
+++ b/mlir/include/mlir/Dialect/AffineOps/AffineOps.td
@@ -235,7 +235,7 @@
 }
 
 class AffineMinMaxOpBase<string mnemonic, list<OpTrait> traits = []> :
-    Op<Affine_Dialect, mnemonic, traits> {
+    Op<Affine_Dialect, mnemonic, !listconcat(traits, [NoSideEffect])> {
   let arguments = (ins AffineMapAttr:$map, Variadic<Index>:$operands);
   let results = (outs Index);
   let extraClassDeclaration = [{