diff --git a/mlir/lib/Conversion/MemRefToLLVM/MemRefToLLVM.cpp b/mlir/lib/Conversion/MemRefToLLVM/MemRefToLLVM.cpp
--- a/mlir/lib/Conversion/MemRefToLLVM/MemRefToLLVM.cpp
+++ b/mlir/lib/Conversion/MemRefToLLVM/MemRefToLLVM.cpp
@@ -1548,7 +1548,6 @@
       AllocaScopeOpLowering,
       AssumeAlignmentOpLowering,
       DimOpLowering,
-      DeallocOpLowering,
       GlobalMemrefOpLowering,
       GetGlobalMemrefOpLowering,
       LoadOpLowering,