diff --git a/mlir/include/mlir/Dialect/StandardOps/Transforms/ComposeSubView.h b/mlir/include/mlir/Dialect/MemRef/Transforms/ComposeSubView.h
rename from mlir/include/mlir/Dialect/StandardOps/Transforms/ComposeSubView.h
rename to mlir/include/mlir/Dialect/MemRef/Transforms/ComposeSubView.h
--- a/mlir/include/mlir/Dialect/StandardOps/Transforms/ComposeSubView.h
+++ b/mlir/include/mlir/Dialect/MemRef/Transforms/ComposeSubView.h
@@ -1,4 +1,4 @@
-//===- ComposeSubView.h - Combining composed subview ops --------*- C++ -*-===//
+//===- ComposeSubView.h - Combining composed memref ops ---------*- C++ -*-===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
@@ -10,19 +10,20 @@
 //
 //===----------------------------------------------------------------------===//
 
-#ifndef MLIR_DIALECT_STANDARDOPS_TRANSFORMS_COMPOSESUBVIEW_H_
-#define MLIR_DIALECT_STANDARDOPS_TRANSFORMS_COMPOSESUBVIEW_H_
+#ifndef MLIR_DIALECT_MEMREF_TRANSFORMS_COMPOSESUBVIEW_H_
+#define MLIR_DIALECT_MEMREF_TRANSFORMS_COMPOSESUBVIEW_H_
 
 namespace mlir {
-
-// Forward declarations.
 class MLIRContext;
 class RewritePatternSet;
 using OwningRewritePatternList = RewritePatternSet;
 
+namespace memref {
+
 void populateComposeSubViewPatterns(OwningRewritePatternList &patterns,
                                     MLIRContext *context);
 
+} // namespace memref
 } // namespace mlir
 
-#endif // MLIR_DIALECT_STANDARDOPS_TRANSFORMS_COMPOSESUBVIEW_H_
+#endif // MLIR_DIALECT_MEMREF_TRANSFORMS_COMPOSESUBVIEW_H_
diff --git a/mlir/include/mlir/Dialect/MemRef/Transforms/Passes.h b/mlir/include/mlir/Dialect/MemRef/Transforms/Passes.h
--- a/mlir/include/mlir/Dialect/MemRef/Transforms/Passes.h
+++ b/mlir/include/mlir/Dialect/MemRef/Transforms/Passes.h
@@ -18,6 +18,7 @@
 namespace mlir {
 
 class AffineDialect;
+class StandardOpsDialect;
 namespace tensor {
 class TensorDialect;
 } // namespace tensor
@@ -31,6 +32,9 @@
 // Patterns
 //===----------------------------------------------------------------------===//
 
+/// Collects a set of patterns to rewrite ops within the memref dialect.
+void populateExpandOpsPatterns(RewritePatternSet &patterns);
+
 /// Appends patterns for folding memref.subview ops into consumer load/store ops
 /// into `patterns`.
 void populateFoldSubViewOpPatterns(RewritePatternSet &patterns);
@@ -51,6 +55,11 @@
 // Passes
 //===----------------------------------------------------------------------===//
 
+/// Creates an instance of the ExpandOps pass that legalizes memref dialect ops
+/// to be convertible to LLVM. For example, `memref.reshape` gets converted to
+/// `memref_reinterpret_cast`.
+std::unique_ptr<Pass> createExpandOpsPass();
+
 /// Creates an operation pass to fold memref.subview ops into consumer
 /// load/store ops into `patterns`.
 std::unique_ptr<Pass> createFoldSubViewOpsPass();
diff --git a/mlir/include/mlir/Dialect/MemRef/Transforms/Passes.td b/mlir/include/mlir/Dialect/MemRef/Transforms/Passes.td
--- a/mlir/include/mlir/Dialect/MemRef/Transforms/Passes.td
+++ b/mlir/include/mlir/Dialect/MemRef/Transforms/Passes.td
@@ -11,6 +11,12 @@
 
 include "mlir/Pass/PassBase.td"
 
+def ExpandOps : Pass<"memref-expand", "FuncOp"> {
+  let summary = "Legalize memref operations to be convertible to LLVM.";
+  let constructor = "mlir::memref::createExpandOpsPass()";
+  let dependentDialects = ["StandardOpsDialect"];
+}
+
 def FoldSubViewOps : Pass<"fold-memref-subview-ops"> {
   let summary = "Fold memref.subview ops into consumer load/store ops";
   let description = [{
diff --git a/mlir/include/mlir/Dialect/StandardOps/Transforms/Passes.h b/mlir/include/mlir/Dialect/StandardOps/Transforms/Passes.h
--- a/mlir/include/mlir/Dialect/StandardOps/Transforms/Passes.h
+++ b/mlir/include/mlir/Dialect/StandardOps/Transforms/Passes.h
@@ -45,16 +45,6 @@
 /// Creates an instance of tensor constant bufferization pass.
 std::unique_ptr<Pass> createTensorConstantBufferizePass(unsigned alignment = 0);
 
-/// Creates an instance of the StdExpand pass that legalizes Std
-/// dialect ops to be convertible to LLVM. For example,
-/// `std.arith.ceildivsi` gets transformed to a number of std operations,
-/// which can be lowered to LLVM; `memref.reshape` gets converted to
-/// `memref_reinterpret_cast`.
-std::unique_ptr<Pass> createStdExpandOpsPass();
-
-/// Collects a set of patterns to rewrite ops within the Std dialect.
-void populateStdExpandOpsPatterns(RewritePatternSet &patterns);
-
 //===----------------------------------------------------------------------===//
 // Registration
 //===----------------------------------------------------------------------===//
diff --git a/mlir/include/mlir/Dialect/StandardOps/Transforms/Passes.td b/mlir/include/mlir/Dialect/StandardOps/Transforms/Passes.td
--- a/mlir/include/mlir/Dialect/StandardOps/Transforms/Passes.td
+++ b/mlir/include/mlir/Dialect/StandardOps/Transforms/Passes.td
@@ -18,11 +18,6 @@
                            "memref::MemRefDialect", "scf::SCFDialect"];
 }
 
-def StdExpandOps : Pass<"std-expand", "FuncOp"> {
-  let summary = "Legalize std operations to be convertible to LLVM.";
-  let constructor = "mlir::createStdExpandOpsPass()";
-}
-
 def FuncBufferize : Pass<"func-bufferize", "ModuleOp"> {
   let summary = "Bufferize func/call/return ops";
   let description = [{
diff --git a/mlir/lib/Dialect/MemRef/Transforms/CMakeLists.txt b/mlir/lib/Dialect/MemRef/Transforms/CMakeLists.txt
--- a/mlir/lib/Dialect/MemRef/Transforms/CMakeLists.txt
+++ b/mlir/lib/Dialect/MemRef/Transforms/CMakeLists.txt
@@ -1,4 +1,6 @@
 add_mlir_dialect_library(MLIRMemRefTransforms
+  ComposeSubView.cpp
+  ExpandOps.cpp
   FoldSubViewOps.cpp
   NormalizeMemRefs.cpp
   ResolveShapedTypeResultDims.cpp
@@ -15,6 +17,7 @@
   MLIRInferTypeOpInterface
   MLIRMemRef
   MLIRPass
+  MLIRStandard
   MLIRTensor
   MLIRTransforms
   MLIRVector
diff --git a/mlir/lib/Dialect/StandardOps/Transforms/ComposeSubView.cpp b/mlir/lib/Dialect/MemRef/Transforms/ComposeSubView.cpp
rename from mlir/lib/Dialect/StandardOps/Transforms/ComposeSubView.cpp
rename to mlir/lib/Dialect/MemRef/Transforms/ComposeSubView.cpp
--- a/mlir/lib/Dialect/StandardOps/Transforms/ComposeSubView.cpp
+++ b/mlir/lib/Dialect/MemRef/Transforms/ComposeSubView.cpp
@@ -11,8 +11,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "mlir/Dialect/StandardOps/Transforms/ComposeSubView.h"
-
+#include "mlir/Dialect/MemRef/Transforms/ComposeSubView.h"
 #include "mlir/Dialect/Affine/IR/AffineOps.h"
 #include "mlir/Dialect/MemRef/IR/MemRef.h"
 #include "mlir/IR/BuiltinAttributes.h"
@@ -21,7 +20,7 @@
 #include "mlir/Transforms/DialectConversion.h"
 #include "mlir/Transforms/GreedyPatternRewriteDriver.h"
 
-namespace mlir {
+using namespace mlir;
 
 namespace {
 
@@ -128,9 +127,7 @@
 
 } // namespace
 
-void populateComposeSubViewPatterns(OwningRewritePatternList &patterns,
-                                    MLIRContext *context) {
+void mlir::memref::populateComposeSubViewPatterns(
+    OwningRewritePatternList &patterns, MLIRContext *context) {
   patterns.insert<ComposeSubViewOpPattern>(context);
 }
-
-} // namespace mlir
diff --git a/mlir/lib/Dialect/StandardOps/Transforms/ExpandOps.cpp b/mlir/lib/Dialect/MemRef/Transforms/ExpandOps.cpp
rename from mlir/lib/Dialect/StandardOps/Transforms/ExpandOps.cpp
rename to mlir/lib/Dialect/MemRef/Transforms/ExpandOps.cpp
--- a/mlir/lib/Dialect/StandardOps/Transforms/ExpandOps.cpp
+++ b/mlir/lib/Dialect/MemRef/Transforms/ExpandOps.cpp
@@ -17,8 +17,8 @@
 #include "mlir/Dialect/Arithmetic/IR/Arithmetic.h"
 #include "mlir/Dialect/Arithmetic/Transforms/Passes.h"
 #include "mlir/Dialect/MemRef/IR/MemRef.h"
+#include "mlir/Dialect/MemRef/Transforms/Passes.h"
 #include "mlir/Dialect/StandardOps/IR/Ops.h"
-#include "mlir/Dialect/StandardOps/Transforms/Passes.h"
 #include "mlir/IR/TypeUtilities.h"
 #include "mlir/Transforms/DialectConversion.h"
 
@@ -120,13 +120,13 @@
   }
 };
 
-struct StdExpandOpsPass : public StdExpandOpsBase<StdExpandOpsPass> {
+struct ExpandOpsPass : public ExpandOpsBase<ExpandOpsPass> {
   void runOnOperation() override {
     MLIRContext &ctx = getContext();
 
     RewritePatternSet patterns(&ctx);
-    populateStdExpandOpsPatterns(patterns);
-    ConversionTarget target(getContext());
+    memref::populateExpandOpsPatterns(patterns);
+    ConversionTarget target(ctx);
 
     target.addLegalDialect<arith::ArithmeticDialect, memref::MemRefDialect,
                            StandardOpsDialect>();
@@ -146,11 +146,11 @@
 
 } // namespace
 
-void mlir::populateStdExpandOpsPatterns(RewritePatternSet &patterns) {
+void mlir::memref::populateExpandOpsPatterns(RewritePatternSet &patterns) {
   patterns.add<AtomicRMWOpConverter, MemRefReshapeOpConverter>(
       patterns.getContext());
 }
 
-std::unique_ptr<Pass> mlir::createStdExpandOpsPass() {
-  return std::make_unique<StdExpandOpsPass>();
+std::unique_ptr<Pass> mlir::memref::createExpandOpsPass() {
+  return std::make_unique<ExpandOpsPass>();
 }
diff --git a/mlir/lib/Dialect/MemRef/Transforms/PassDetail.h b/mlir/lib/Dialect/MemRef/Transforms/PassDetail.h
--- a/mlir/lib/Dialect/MemRef/Transforms/PassDetail.h
+++ b/mlir/lib/Dialect/MemRef/Transforms/PassDetail.h
@@ -14,6 +14,7 @@
 namespace mlir {
 
 class AffineDialect;
+class StandardOpsDialect;
 
 // Forward declaration from Dialect.h
 template <typename ConcreteDialect>
diff --git a/mlir/lib/Dialect/StandardOps/Transforms/CMakeLists.txt b/mlir/lib/Dialect/StandardOps/Transforms/CMakeLists.txt
--- a/mlir/lib/Dialect/StandardOps/Transforms/CMakeLists.txt
+++ b/mlir/lib/Dialect/StandardOps/Transforms/CMakeLists.txt
@@ -1,8 +1,6 @@
 add_mlir_dialect_library(MLIRStandardOpsTransforms
   Bufferize.cpp
-  ComposeSubView.cpp
   DecomposeCallGraphTypes.cpp
-  ExpandOps.cpp
   FuncBufferize.cpp
   FuncConversions.cpp
   TensorConstantBufferize.cpp
diff --git a/mlir/test/Dialect/Standard/expand-ops.mlir b/mlir/test/Dialect/MemRef/expand-ops.mlir
rename from mlir/test/Dialect/Standard/expand-ops.mlir
rename to mlir/test/Dialect/MemRef/expand-ops.mlir
--- a/mlir/test/Dialect/Standard/expand-ops.mlir
+++ b/mlir/test/Dialect/MemRef/expand-ops.mlir
@@ -1,4 +1,4 @@
-// RUN: mlir-opt -std-expand %s -split-input-file | FileCheck %s
+// RUN: mlir-opt -memref-expand %s -split-input-file | FileCheck %s
 
 // CHECK-LABEL: func @atomic_rmw_to_generic
 // CHECK-SAME: ([[F:%.*]]: memref<10xf32>, [[f:%.*]]: f32, [[i:%.*]]: index)
diff --git a/mlir/test/lib/Dialect/CMakeLists.txt b/mlir/test/lib/Dialect/CMakeLists.txt
--- a/mlir/test/lib/Dialect/CMakeLists.txt
+++ b/mlir/test/lib/Dialect/CMakeLists.txt
@@ -3,6 +3,7 @@
 add_subdirectory(GPU)
 add_subdirectory(Linalg)
 add_subdirectory(Math)
+add_subdirectory(MemRef)
 add_subdirectory(SCF)
 add_subdirectory(Shape)
 add_subdirectory(SPIRV)
diff --git a/mlir/test/lib/Dialect/StandardOps/CMakeLists.txt b/mlir/test/lib/Dialect/MemRef/CMakeLists.txt
copy from mlir/test/lib/Dialect/StandardOps/CMakeLists.txt
copy to mlir/test/lib/Dialect/MemRef/CMakeLists.txt
--- a/mlir/test/lib/Dialect/StandardOps/CMakeLists.txt
+++ b/mlir/test/lib/Dialect/MemRef/CMakeLists.txt
@@ -1,19 +1,16 @@
 # Exclude tests from libMLIR.so
-add_mlir_library(MLIRStandardOpsTestPasses
-  TestDecomposeCallGraphTypes.cpp
+add_mlir_library(MLIRMemRefTestPasses
   TestComposeSubView.cpp
 
   EXCLUDE_FROM_LIBMLIR
 
   LINK_LIBS PUBLIC
-  MLIRAffine
   MLIRPass
-  MLIRStandardOpsTransforms
+  MLIRMemRefTransforms
   MLIRTestDialect
-  MLIRTransformUtils
   )
 
-target_include_directories(MLIRStandardOpsTestPasses
+target_include_directories(MLIRMemRefTestPasses
   PRIVATE
   ${CMAKE_CURRENT_SOURCE_DIR}/../Test
   ${CMAKE_CURRENT_BINARY_DIR}/../Test
diff --git a/mlir/test/lib/Dialect/StandardOps/TestComposeSubView.cpp b/mlir/test/lib/Dialect/MemRef/TestComposeSubView.cpp
rename from mlir/test/lib/Dialect/StandardOps/TestComposeSubView.cpp
rename to mlir/test/lib/Dialect/MemRef/TestComposeSubView.cpp
--- a/mlir/test/lib/Dialect/StandardOps/TestComposeSubView.cpp
+++ b/mlir/test/lib/Dialect/MemRef/TestComposeSubView.cpp
@@ -11,7 +11,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "mlir/Dialect/Affine/IR/AffineOps.h"
-#include "mlir/Dialect/StandardOps/Transforms/ComposeSubView.h"
+#include "mlir/Dialect/MemRef/Transforms/ComposeSubView.h"
 #include "mlir/Pass/Pass.h"
 #include "mlir/Transforms/GreedyPatternRewriteDriver.h"
 
@@ -35,7 +35,7 @@
 
 void TestComposeSubViewPass::runOnOperation() {
   OwningRewritePatternList patterns(&getContext());
-  populateComposeSubViewPatterns(patterns, &getContext());
+  memref::populateComposeSubViewPatterns(patterns, &getContext());
   (void)applyPatternsAndFoldGreedily(getOperation(), std::move(patterns));
 }
 } // namespace
diff --git a/mlir/test/lib/Dialect/StandardOps/CMakeLists.txt b/mlir/test/lib/Dialect/StandardOps/CMakeLists.txt
--- a/mlir/test/lib/Dialect/StandardOps/CMakeLists.txt
+++ b/mlir/test/lib/Dialect/StandardOps/CMakeLists.txt
@@ -1,7 +1,6 @@
 # Exclude tests from libMLIR.so
 add_mlir_library(MLIRStandardOpsTestPasses
   TestDecomposeCallGraphTypes.cpp
-  TestComposeSubView.cpp
 
   EXCLUDE_FROM_LIBMLIR
 
diff --git a/mlir/test/mlir-cpu-runner/memref-reshape.mlir b/mlir/test/mlir-cpu-runner/memref-reshape.mlir
--- a/mlir/test/mlir-cpu-runner/memref-reshape.mlir
+++ b/mlir/test/mlir-cpu-runner/memref-reshape.mlir
@@ -1,4 +1,4 @@
-// RUN: mlir-opt %s -convert-scf-to-std -std-expand -convert-arith-to-llvm -convert-memref-to-llvm -convert-std-to-llvm -reconcile-unrealized-casts \
+// RUN: mlir-opt %s -convert-scf-to-std -memref-expand -convert-arith-to-llvm -convert-memref-to-llvm -convert-std-to-llvm -reconcile-unrealized-casts \
 // RUN: | mlir-cpu-runner -e main -entry-point-result=void \
 // RUN: -shared-libs=%mlir_runner_utils_dir/libmlir_runner_utils%shlibext,%mlir_runner_utils_dir/libmlir_c_runner_utils%shlibext \
 // RUN: | FileCheck %s
diff --git a/mlir/tools/mlir-opt/CMakeLists.txt b/mlir/tools/mlir-opt/CMakeLists.txt
--- a/mlir/tools/mlir-opt/CMakeLists.txt
+++ b/mlir/tools/mlir-opt/CMakeLists.txt
@@ -18,6 +18,7 @@
     MLIRGPUTestPasses
     MLIRLinalgTestPasses
     MLIRMathTestPasses
+    MLIRMemRefTestPasses
     MLIRSCFTestPasses
     MLIRShapeTestPasses
     MLIRSPIRVTestPasses