diff --git a/mlir/include/mlir/Conversion/AffineToStandard/AffineToStandard.h b/mlir/include/mlir/Conversion/AffineToStandard/AffineToStandard.h
--- a/mlir/include/mlir/Conversion/AffineToStandard/AffineToStandard.h
+++ b/mlir/include/mlir/Conversion/AffineToStandard/AffineToStandard.h
@@ -24,8 +24,8 @@
 class Value;
 class ValueRange;
 
-// Owning list of rewriting patterns.
-class OwningRewritePatternList;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 /// Emit code that computes the given affine expression using standard
 /// arithmetic operations applied to the provided dimension and symbol values.
diff --git a/mlir/include/mlir/Conversion/ArmSVEToLLVM/ArmSVEToLLVM.h b/mlir/include/mlir/Conversion/ArmSVEToLLVM/ArmSVEToLLVM.h
--- a/mlir/include/mlir/Conversion/ArmSVEToLLVM/ArmSVEToLLVM.h
+++ b/mlir/include/mlir/Conversion/ArmSVEToLLVM/ArmSVEToLLVM.h
@@ -12,7 +12,8 @@
 namespace mlir {
 
 class LLVMTypeConverter;
-class OwningRewritePatternList;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 /// Collect a set of patterns to convert from the ArmSVE dialect to LLVM.
 void populateArmSVEToLLVMConversionPatterns(LLVMTypeConverter &converter,
diff --git a/mlir/include/mlir/Conversion/AsyncToLLVM/AsyncToLLVM.h b/mlir/include/mlir/Conversion/AsyncToLLVM/AsyncToLLVM.h
--- a/mlir/include/mlir/Conversion/AsyncToLLVM/AsyncToLLVM.h
+++ b/mlir/include/mlir/Conversion/AsyncToLLVM/AsyncToLLVM.h
@@ -18,8 +18,9 @@
 template <typename T>
 class OperationPass;
 class MLIRContext;
-class OwningRewritePatternList;
 class TypeConverter;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 /// Create a pass to convert Async operations to the LLVM dialect.
 std::unique_ptr<OperationPass<ModuleOp>> createConvertAsyncToLLVMPass();
diff --git a/mlir/include/mlir/Conversion/GPUCommon/GPUCommonPass.h b/mlir/include/mlir/Conversion/GPUCommon/GPUCommonPass.h
--- a/mlir/include/mlir/Conversion/GPUCommon/GPUCommonPass.h
+++ b/mlir/include/mlir/Conversion/GPUCommon/GPUCommonPass.h
@@ -24,7 +24,8 @@
 struct LogicalResult;
 class ModuleOp;
 class Operation;
-class OwningRewritePatternList;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 template <typename T>
 class OperationPass;
diff --git a/mlir/include/mlir/Conversion/GPUToNVVM/GPUToNVVMPass.h b/mlir/include/mlir/Conversion/GPUToNVVM/GPUToNVVMPass.h
--- a/mlir/include/mlir/Conversion/GPUToNVVM/GPUToNVVMPass.h
+++ b/mlir/include/mlir/Conversion/GPUToNVVM/GPUToNVVMPass.h
@@ -13,10 +13,12 @@
 
 namespace mlir {
 class LLVMTypeConverter;
-class OwningRewritePatternList;
 class ConversionTarget;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
-template <typename OpT> class OperationPass;
+template <typename OpT>
+class OperationPass;
 
 namespace gpu {
 class GPUModuleOp;
diff --git a/mlir/include/mlir/Conversion/GPUToROCDL/GPUToROCDLPass.h b/mlir/include/mlir/Conversion/GPUToROCDL/GPUToROCDLPass.h
--- a/mlir/include/mlir/Conversion/GPUToROCDL/GPUToROCDLPass.h
+++ b/mlir/include/mlir/Conversion/GPUToROCDL/GPUToROCDLPass.h
@@ -13,8 +13,9 @@
 
 namespace mlir {
 class LLVMTypeConverter;
-class OwningRewritePatternList;
 class ConversionTarget;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 template <typename OpT>
 class OperationPass;
diff --git a/mlir/include/mlir/Conversion/LinalgToSPIRV/LinalgToSPIRV.h b/mlir/include/mlir/Conversion/LinalgToSPIRV/LinalgToSPIRV.h
--- a/mlir/include/mlir/Conversion/LinalgToSPIRV/LinalgToSPIRV.h
+++ b/mlir/include/mlir/Conversion/LinalgToSPIRV/LinalgToSPIRV.h
@@ -15,8 +15,9 @@
 
 namespace mlir {
 class MLIRContext;
-class OwningRewritePatternList;
 class SPIRVTypeConverter;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 /// Appends to a pattern list additional patterns for translating Linalg ops to
 /// SPIR-V ops.
diff --git a/mlir/include/mlir/Conversion/OpenMPToLLVM/ConvertOpenMPToLLVM.h b/mlir/include/mlir/Conversion/OpenMPToLLVM/ConvertOpenMPToLLVM.h
--- a/mlir/include/mlir/Conversion/OpenMPToLLVM/ConvertOpenMPToLLVM.h
+++ b/mlir/include/mlir/Conversion/OpenMPToLLVM/ConvertOpenMPToLLVM.h
@@ -8,7 +8,7 @@
 #ifndef MLIR_CONVERSION_OPENMPTOLLVM_OPENMPTOLLVM_H_
 #define MLIR_CONVERSION_OPENMPTOLLVM_OPENMPTOLLVM_H_
 
-#include<memory>
+#include <memory>
 
 namespace mlir {
 class LLVMTypeConverter;
@@ -16,7 +16,8 @@
 class ModuleOp;
 template <typename T>
 class OperationPass;
-class OwningRewritePatternList;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 /// Populate the given list with patterns that convert from OpenMP to LLVM.
 void populateOpenMPToLLVMConversionPatterns(LLVMTypeConverter &converter,
diff --git a/mlir/include/mlir/Conversion/SCFToGPU/SCFToGPU.h b/mlir/include/mlir/Conversion/SCFToGPU/SCFToGPU.h
--- a/mlir/include/mlir/Conversion/SCFToGPU/SCFToGPU.h
+++ b/mlir/include/mlir/Conversion/SCFToGPU/SCFToGPU.h
@@ -15,8 +15,9 @@
 class ConversionTarget;
 struct LogicalResult;
 class MLIRContext;
-class OwningRewritePatternList;
 class Value;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 namespace scf {
 class ForOp;
diff --git a/mlir/include/mlir/Conversion/SCFToSPIRV/SCFToSPIRV.h b/mlir/include/mlir/Conversion/SCFToSPIRV/SCFToSPIRV.h
--- a/mlir/include/mlir/Conversion/SCFToSPIRV/SCFToSPIRV.h
+++ b/mlir/include/mlir/Conversion/SCFToSPIRV/SCFToSPIRV.h
@@ -18,9 +18,10 @@
 class Pass;
 
 // Owning list of rewriting patterns.
-class OwningRewritePatternList;
 class SPIRVTypeConverter;
 struct ScfToSPIRVContextImpl;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 struct ScfToSPIRVContext {
   ScfToSPIRVContext();
diff --git a/mlir/include/mlir/Conversion/SCFToStandard/SCFToStandard.h b/mlir/include/mlir/Conversion/SCFToStandard/SCFToStandard.h
--- a/mlir/include/mlir/Conversion/SCFToStandard/SCFToStandard.h
+++ b/mlir/include/mlir/Conversion/SCFToStandard/SCFToStandard.h
@@ -15,10 +15,9 @@
 namespace mlir {
 struct LogicalResult;
 class Pass;
-class RewritePattern;
 
-// Owning list of rewriting patterns.
-class OwningRewritePatternList;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 /// Collect a set of patterns to lower from scf.for, scf.if, and
 /// loop.terminator to CFG operations within the Standard dialect, in particular
diff --git a/mlir/include/mlir/Conversion/ShapeToStandard/ShapeToStandard.h b/mlir/include/mlir/Conversion/ShapeToStandard/ShapeToStandard.h
--- a/mlir/include/mlir/Conversion/ShapeToStandard/ShapeToStandard.h
+++ b/mlir/include/mlir/Conversion/ShapeToStandard/ShapeToStandard.h
@@ -17,7 +17,8 @@
 class ModuleOp;
 template <typename T>
 class OperationPass;
-class OwningRewritePatternList;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 void populateShapeToStandardConversionPatterns(
     OwningRewritePatternList &patterns);
diff --git a/mlir/include/mlir/Conversion/StandardToLLVM/ConvertStandardToLLVMPass.h b/mlir/include/mlir/Conversion/StandardToLLVM/ConvertStandardToLLVMPass.h
--- a/mlir/include/mlir/Conversion/StandardToLLVM/ConvertStandardToLLVMPass.h
+++ b/mlir/include/mlir/Conversion/StandardToLLVM/ConvertStandardToLLVMPass.h
@@ -18,7 +18,8 @@
 class ModuleOp;
 template <typename T>
 class OperationPass;
-class OwningRewritePatternList;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 /// Value to pass as bitwidth for the index type when the converter is expected
 /// to derive the bitwidth from the LLVM data layout.
diff --git a/mlir/include/mlir/Conversion/VectorToROCDL/VectorToROCDL.h b/mlir/include/mlir/Conversion/VectorToROCDL/VectorToROCDL.h
--- a/mlir/include/mlir/Conversion/VectorToROCDL/VectorToROCDL.h
+++ b/mlir/include/mlir/Conversion/VectorToROCDL/VectorToROCDL.h
@@ -12,10 +12,11 @@
 
 namespace mlir {
 class LLVMTypeConverter;
-class OwningRewritePatternList;
 class ModuleOp;
 template <typename OpT>
 class OperationPass;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 /// Collect a set of patterns to convert from the GPU dialect to ROCDL.
 void populateVectorToROCDLConversionPatterns(
diff --git a/mlir/include/mlir/Conversion/VectorToSCF/VectorToSCF.h b/mlir/include/mlir/Conversion/VectorToSCF/VectorToSCF.h
--- a/mlir/include/mlir/Conversion/VectorToSCF/VectorToSCF.h
+++ b/mlir/include/mlir/Conversion/VectorToSCF/VectorToSCF.h
@@ -13,8 +13,9 @@
 
 namespace mlir {
 class MLIRContext;
-class OwningRewritePatternList;
 class Pass;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 /// Control whether unrolling is used when lowering vector transfer ops to SCF.
 ///
diff --git a/mlir/include/mlir/Dialect/AMX/Transforms.h b/mlir/include/mlir/Dialect/AMX/Transforms.h
--- a/mlir/include/mlir/Dialect/AMX/Transforms.h
+++ b/mlir/include/mlir/Dialect/AMX/Transforms.h
@@ -13,7 +13,8 @@
 
 class LLVMConversionTarget;
 class LLVMTypeConverter;
-class OwningRewritePatternList;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 /// Collect a set of patterns to lower AMX ops to ops that map to LLVM
 /// intrinsics.
diff --git a/mlir/include/mlir/Dialect/AVX512/Transforms.h b/mlir/include/mlir/Dialect/AVX512/Transforms.h
--- a/mlir/include/mlir/Dialect/AVX512/Transforms.h
+++ b/mlir/include/mlir/Dialect/AVX512/Transforms.h
@@ -13,7 +13,8 @@
 
 class LLVMConversionTarget;
 class LLVMTypeConverter;
-class OwningRewritePatternList;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 /// Collect a set of patterns to lower AVX512 ops to ops that map to LLVM
 /// intrinsics.
diff --git a/mlir/include/mlir/Dialect/Math/Transforms/Passes.h b/mlir/include/mlir/Dialect/Math/Transforms/Passes.h
--- a/mlir/include/mlir/Dialect/Math/Transforms/Passes.h
+++ b/mlir/include/mlir/Dialect/Math/Transforms/Passes.h
@@ -11,12 +11,11 @@
 
 namespace mlir {
 
-class OwningRewritePatternList;
+class RewritePatternSet;
 
-void populateExpandTanhPattern(OwningRewritePatternList &patterns);
+void populateExpandTanhPattern(RewritePatternSet &patterns);
 
-void populateMathPolynomialApproximationPatterns(
-    OwningRewritePatternList &patterns);
+void populateMathPolynomialApproximationPatterns(RewritePatternSet &patterns);
 
 } // namespace mlir
 
diff --git a/mlir/include/mlir/Dialect/SCF/Transforms.h b/mlir/include/mlir/Dialect/SCF/Transforms.h
--- a/mlir/include/mlir/Dialect/SCF/Transforms.h
+++ b/mlir/include/mlir/Dialect/SCF/Transforms.h
@@ -19,9 +19,10 @@
 
 class ConversionTarget;
 class MLIRContext;
-class OwningRewritePatternList;
 class Region;
 class TypeConverter;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 namespace scf {
 
diff --git a/mlir/include/mlir/Dialect/StandardOps/Transforms/FuncConversions.h b/mlir/include/mlir/Dialect/StandardOps/Transforms/FuncConversions.h
--- a/mlir/include/mlir/Dialect/StandardOps/Transforms/FuncConversions.h
+++ b/mlir/include/mlir/Dialect/StandardOps/Transforms/FuncConversions.h
@@ -19,8 +19,9 @@
 class ConversionTarget;
 class MLIRContext;
 class Operation;
-class OwningRewritePatternList;
 class TypeConverter;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 /// Add a pattern to the given pattern list to convert the operand and result
 /// types of a CallOp with the given type converter.
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
@@ -19,7 +19,8 @@
 
 namespace mlir {
 
-class OwningRewritePatternList;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 void populateStdBufferizePatterns(BufferizeTypeConverter &typeConverter,
                                   OwningRewritePatternList &patterns);
diff --git a/mlir/include/mlir/Dialect/Tensor/Transforms/Passes.h b/mlir/include/mlir/Dialect/Tensor/Transforms/Passes.h
--- a/mlir/include/mlir/Dialect/Tensor/Transforms/Passes.h
+++ b/mlir/include/mlir/Dialect/Tensor/Transforms/Passes.h
@@ -14,7 +14,8 @@
 
 namespace mlir {
 
-class OwningRewritePatternList;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 void populateTensorBufferizePatterns(BufferizeTypeConverter &typeConverter,
                                      OwningRewritePatternList &patterns);
diff --git a/mlir/include/mlir/Dialect/Vector/VectorOps.h b/mlir/include/mlir/Dialect/Vector/VectorOps.h
--- a/mlir/include/mlir/Dialect/Vector/VectorOps.h
+++ b/mlir/include/mlir/Dialect/Vector/VectorOps.h
@@ -28,7 +28,8 @@
 
 namespace mlir {
 class MLIRContext;
-class OwningRewritePatternList;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 namespace vector {
 class VectorDialect;
diff --git a/mlir/include/mlir/Dialect/Vector/VectorTransforms.h b/mlir/include/mlir/Dialect/Vector/VectorTransforms.h
--- a/mlir/include/mlir/Dialect/Vector/VectorTransforms.h
+++ b/mlir/include/mlir/Dialect/Vector/VectorTransforms.h
@@ -16,8 +16,9 @@
 
 namespace mlir {
 class MLIRContext;
-class OwningRewritePatternList;
 class VectorTransferOpInterface;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 namespace scf {
 class IfOp;
diff --git a/mlir/include/mlir/IR/OperationSupport.h b/mlir/include/mlir/IR/OperationSupport.h
--- a/mlir/include/mlir/IR/OperationSupport.h
+++ b/mlir/include/mlir/IR/OperationSupport.h
@@ -51,9 +51,11 @@
 class Type;
 class Value;
 class ValueRange;
-template <typename ValueRangeT> class ValueTypeRange;
+template <typename ValueRangeT>
+class ValueTypeRange;
 
-class OwningRewritePatternList;
+class RewritePatternSet;
+using OwningRewritePatternList = RewritePatternSet;
 
 //===----------------------------------------------------------------------===//
 // AbstractOperation
@@ -132,12 +134,14 @@
   /// Returns an instance of the concept object for the given interface if it
   /// was registered to this operation, null otherwise. This should not be used
   /// directly.
-  template <typename T> typename T::Concept *getInterface() const {
+  template <typename T>
+  typename T::Concept *getInterface() const {
     return interfaceMap.lookup<T>();
   }
 
   /// Returns true if the operation has a particular trait.
-  template <template <typename T> class Trait> bool hasTrait() const {
+  template <template <typename T> class Trait>
+  bool hasTrait() const {
     return hasTraitFn(TypeID::get<Trait>());
   }
 
@@ -148,7 +152,8 @@
 
   /// This constructor is used by Dialect objects when they register the list of
   /// operations they contain.
-  template <typename T> static void insert(Dialect &dialect) {
+  template <typename T>
+  static void insert(Dialect &dialect) {
     insert(T::getOperationName(), dialect, TypeID::get<T>(),
            T::getParseAssemblyFn(), T::getPrintAssemblyFn(),
            T::getVerifyInvariantsFn(), T::getFoldHookFn(),
@@ -220,7 +225,8 @@
   void append(NamedAttribute attr) { push_back(attr); }
 
   /// Add an array of named attributes.
-  template <typename RangeT> void append(RangeT &&newAttributes) {
+  template <typename RangeT>
+  void append(RangeT &&newAttributes) {
     append(std::begin(newAttributes), std::end(newAttributes));
   }
 
@@ -851,7 +857,8 @@
 
 namespace llvm {
 // Identifiers hash just like pointers, there is no need to hash the bytes.
-template <> struct DenseMapInfo<mlir::OperationName> {
+template <>
+struct DenseMapInfo<mlir::OperationName> {
   static mlir::OperationName getEmptyKey() {
     auto pointer = llvm::DenseMapInfo<void *>::getEmptyKey();
     return mlir::OperationName::getFromOpaquePointer(pointer);
@@ -871,7 +878,8 @@
 /// The pointer inside of an identifier comes from a StringMap, so its alignment
 /// is always at least 4 and probably 8 (on 64-bit machines).  Allow LLVM to
 /// steal the low bits.
-template <> struct PointerLikeTypeTraits<mlir::OperationName> {
+template <>
+struct PointerLikeTypeTraits<mlir::OperationName> {
 public:
   static inline void *getAsVoidPointer(mlir::OperationName I) {
     return const_cast<void *>(I.getAsOpaquePointer());
diff --git a/mlir/include/mlir/IR/PatternMatch.h b/mlir/include/mlir/IR/PatternMatch.h
--- a/mlir/include/mlir/IR/PatternMatch.h
+++ b/mlir/include/mlir/IR/PatternMatch.h
@@ -715,22 +715,22 @@
 };
 
 //===----------------------------------------------------------------------===//
-// OwningRewritePatternList
+// RewritePatternSet
 //===----------------------------------------------------------------------===//
 
-class OwningRewritePatternList {
+class RewritePatternSet {
   using NativePatternListT = std::vector<std::unique_ptr<RewritePattern>>;
 
 public:
-  OwningRewritePatternList(MLIRContext *context) : context(context) {}
+  RewritePatternSet(MLIRContext *context) : context(context) {}
 
-  /// Construct a OwningRewritePatternList populated with the given pattern.
-  OwningRewritePatternList(MLIRContext *context,
-                           std::unique_ptr<RewritePattern> pattern)
+  /// Construct a RewritePatternSet populated with the given pattern.
+  RewritePatternSet(MLIRContext *context,
+                    std::unique_ptr<RewritePattern> pattern)
       : context(context) {
     nativePatterns.emplace_back(std::move(pattern));
   }
-  OwningRewritePatternList(PDLPatternModule &&pattern)
+  RewritePatternSet(PDLPatternModule &&pattern)
       : context(pattern.getModule()->getContext()),
         pdlPatterns(std::move(pattern)) {}
 
@@ -748,51 +748,114 @@
     pdlPatterns.clear();
   }
 
+  //===--------------------------------------------------------------------===//
+  // 'add' methods for adding patterns to the set.
+  //===--------------------------------------------------------------------===//
+
+  /// Add an instance of each of the pattern types 'Ts' to the pattern list with
+  /// the given arguments. Return a reference to `this` for chaining insertions.
+  /// Note: ConstructorArg is necessary here to separate the two variadic lists.
+  template <typename... Ts, typename ConstructorArg,
+            typename... ConstructorArgs,
+            typename = std::enable_if_t<sizeof...(Ts) != 0>>
+  RewritePatternSet &add(ConstructorArg &&arg, ConstructorArgs &&... args) {
+    // The following expands a call to emplace_back for each of the pattern
+    // types 'Ts'. This magic is necessary due to a limitation in the places
+    // that a parameter pack can be expanded in c++11.
+    // FIXME: In c++17 this can be simplified by using 'fold expressions'.
+    (void)std::initializer_list<int>{0, (addImpl<Ts>(arg, args...), 0)...};
+    return *this;
+  }
+
+  /// Add an instance of each of the pattern types 'Ts'. Return a reference to
+  /// `this` for chaining insertions.
+  template <typename... Ts>
+  RewritePatternSet &add() {
+    (void)std::initializer_list<int>{0, (addImpl<Ts>(), 0)...};
+    return *this;
+  }
+
+  /// Add the given native pattern to the pattern list. Return a reference to
+  /// `this` for chaining insertions.
+  RewritePatternSet &add(std::unique_ptr<RewritePattern> pattern) {
+    nativePatterns.emplace_back(std::move(pattern));
+    return *this;
+  }
+
+  /// Add the given PDL pattern to the pattern list. Return a reference to
+  /// `this` for chaining insertions.
+  RewritePatternSet &add(PDLPatternModule &&pattern) {
+    pdlPatterns.mergeIn(std::move(pattern));
+    return *this;
+  }
+
+  // Add a matchAndRewrite style pattern represented as a C function pointer.
+  template <typename OpType>
+  RewritePatternSet &add(LogicalResult (*implFn)(OpType,
+                                                 PatternRewriter &rewriter)) {
+    struct FnPattern final : public OpRewritePattern<OpType> {
+      FnPattern(LogicalResult (*implFn)(OpType, PatternRewriter &rewriter),
+                MLIRContext *context)
+          : OpRewritePattern<OpType>(context), implFn(implFn) {}
+
+      LogicalResult matchAndRewrite(OpType op,
+                                    PatternRewriter &rewriter) const override {
+        return implFn(op, rewriter);
+      }
+
+    private:
+      LogicalResult (*implFn)(OpType, PatternRewriter &rewriter);
+    };
+    add(std::make_unique<FnPattern>(std::move(implFn), getContext()));
+    return *this;
+  }
+
   //===--------------------------------------------------------------------===//
   // Pattern Insertion
   //===--------------------------------------------------------------------===//
 
+  // TODO: These are soft deprecated in favor of the 'add' methods above.
+
   /// Add an instance of each of the pattern types 'Ts' to the pattern list with
   /// the given arguments. Return a reference to `this` for chaining insertions.
   /// Note: ConstructorArg is necessary here to separate the two variadic lists.
   template <typename... Ts, typename ConstructorArg,
             typename... ConstructorArgs,
             typename = std::enable_if_t<sizeof...(Ts) != 0>>
-  OwningRewritePatternList &insert(ConstructorArg &&arg,
-                                   ConstructorArgs &&... args) {
+  RewritePatternSet &insert(ConstructorArg &&arg, ConstructorArgs &&... args) {
     // The following expands a call to emplace_back for each of the pattern
     // types 'Ts'. This magic is necessary due to a limitation in the places
     // that a parameter pack can be expanded in c++11.
     // FIXME: In c++17 this can be simplified by using 'fold expressions'.
-    (void)std::initializer_list<int>{0, (insertImpl<Ts>(arg, args...), 0)...};
+    (void)std::initializer_list<int>{0, (addImpl<Ts>(arg, args...), 0)...};
     return *this;
   }
 
   /// Add an instance of each of the pattern types 'Ts'. Return a reference to
   /// `this` for chaining insertions.
   template <typename... Ts>
-  OwningRewritePatternList &insert() {
-    (void)std::initializer_list<int>{0, (insertImpl<Ts>(), 0)...};
+  RewritePatternSet &insert() {
+    (void)std::initializer_list<int>{0, (addImpl<Ts>(), 0)...};
     return *this;
   }
 
   /// Add the given native pattern to the pattern list. Return a reference to
   /// `this` for chaining insertions.
-  OwningRewritePatternList &insert(std::unique_ptr<RewritePattern> pattern) {
+  RewritePatternSet &insert(std::unique_ptr<RewritePattern> pattern) {
     nativePatterns.emplace_back(std::move(pattern));
     return *this;
   }
 
   /// Add the given PDL pattern to the pattern list. Return a reference to
   /// `this` for chaining insertions.
-  OwningRewritePatternList &insert(PDLPatternModule &&pattern) {
+  RewritePatternSet &insert(PDLPatternModule &&pattern) {
     pdlPatterns.mergeIn(std::move(pattern));
     return *this;
   }
 
   // Add a matchAndRewrite style pattern represented as a C function pointer.
   template <typename OpType>
-  OwningRewritePatternList &
+  RewritePatternSet &
   insert(LogicalResult (*implFn)(OpType, PatternRewriter &rewriter)) {
     struct FnPattern final : public OpRewritePattern<OpType> {
       FnPattern(LogicalResult (*implFn)(OpType, PatternRewriter &rewriter),
@@ -816,13 +879,13 @@
   /// chaining insertions.
   template <typename T, typename... Args>
   std::enable_if_t<std::is_base_of<RewritePattern, T>::value>
-  insertImpl(Args &&... args) {
+  addImpl(Args &&... args) {
     nativePatterns.emplace_back(
         std::make_unique<T>(std::forward<Args>(args)...));
   }
   template <typename T, typename... Args>
   std::enable_if_t<std::is_base_of<PDLPatternModule, T>::value>
-  insertImpl(Args &&... args) {
+  addImpl(Args &&... args) {
     pdlPatterns.mergeIn(T(std::forward<Args>(args)...));
   }
 
@@ -831,6 +894,10 @@
   PDLPatternModule pdlPatterns;
 };
 
+// TODO: OwningRewritePatternList is soft-deprecated and will be removed in the
+// future.
+using OwningRewritePatternList = RewritePatternSet;
+
 } // end namespace mlir
 
 #endif // MLIR_PATTERN_MATCH_H
diff --git a/mlir/lib/Dialect/Math/Transforms/ExpandTanh.cpp b/mlir/lib/Dialect/Math/Transforms/ExpandTanh.cpp
--- a/mlir/lib/Dialect/Math/Transforms/ExpandTanh.cpp
+++ b/mlir/lib/Dialect/Math/Transforms/ExpandTanh.cpp
@@ -51,6 +51,6 @@
   return success();
 }
 
-void mlir::populateExpandTanhPattern(OwningRewritePatternList &patterns) {
-  patterns.insert(convertTanhOp);
+void mlir::populateExpandTanhPattern(RewritePatternSet &patterns) {
+  patterns.add(convertTanhOp);
 }