[mlir][IR] Add getPropertyAsAttr and setPropertyFromAttr methods.

mlir/include/mlir/IR/ExtensibleDialect.h

@@ -493,6 +493,17 @@ class DynamicOpDefinition : public OperationName::Impl {
     return failure();
   }
   Attribute getPropertiesAsAttr(Operation *op) final { return {}; }
+
+  LogicalResult
+  setPropertyFromAttr(OperationName opName, OpaqueProperties properties,
+                      StringRef name, Attribute attr,
+                      function_ref<InFlightDiagnostic()> emitError) final {
+    emitError() << "extensible Dialects don't support properties";
+    return failure();
+  }
+  FailureOr<Attribute> getPropertyAsAttr(Operation *op, StringRef name) final {
+    return failure();
+  }
   void copyProperties(OpaqueProperties lhs, OpaqueProperties rhs) final {}
   bool compareProperties(OpaqueProperties, OpaqueProperties) final { return false; }
   llvm::hash_code hashProperties(OpaqueProperties prop) final { return {}; }

mlir/include/mlir/IR/OpDefinition.h

@@ -1758,6 +1758,17 @@ class Op : public OpState, public Traits<ConcreteType>... {
                         function_ref<InFlightDiagnostic()> emitError) {
     return setPropertiesFromAttribute(prop, attr, emitError);
   }
+  /// Convert the provided attribute to a property and assigned it to the
+  /// corresponding property. This default implementation forwards to a free
+  /// function `setPropertiesFromAttribute` that can be looked up with ADL in
+  /// the namespace where the properties are defined. It can also be overridden
+  /// in the derived ConcreteOp.
+  template <typename PropertiesTy>
+  static LogicalResult
+  setPropertyFromAttr(PropertiesTy &prop, StringRef name, Attribute attr,
+                      function_ref<InFlightDiagnostic()> emitError) {
+    return setPropertyFromAttribute(prop, name, attr, emitError);
+  }
   /// Convert the provided properties to an attribute. This default
   /// implementation forwards to a free function `getPropertiesAsAttribute` that
   /// can be looked up with ADL in the namespace where the properties are
@@ -1767,6 +1778,16 @@ class Op : public OpState, public Traits<ConcreteType>... {
                                        const PropertiesTy &prop) {
     return getPropertiesAsAttribute(ctx, prop);
   }
+  /// Convert the provided named property to an attribute. This default
+  /// implementation forwards to a free function `getPropertiesAsAttribute` that
+  /// can be looked up with ADL in the namespace where the properties are
+  /// defined. It can also be overridden in the derived ConcreteOp.
+  template <typename PropertiesTy>
+  static FailureOr<Attribute> getPropertyAsAttr(MLIRContext *ctx,
+                                                const PropertiesTy &prop,
+                                                StringRef name) {
+    return getPropertyAsAttribute(ctx, prop, name);
+  }
   /// Hash the provided properties. This default implementation forwards to a
   /// free function `computeHash` that can be looked up with ADL in the
   /// namespace where the properties are defined. It can also be overridden in

mlir/include/mlir/IR/Operation.h

@@ -920,6 +920,12 @@ class alignas(8) Operation final
   /// operation. Returns an empty attribute if no properties are present.
   Attribute getPropertiesAsAttribute();
 
+  /// Return a named property converted to an attribute.
+  /// This is expensive, and mostly useful when dealing with unregistered
+  /// operations or in language bindings. Returns failure if there's no property
+  /// under such name.
+  FailureOr<Attribute> getPropertyAsAttribute(StringRef name);
+
   /// Set the properties from the provided attribute.
   /// This is an expensive operation that can fail if the attribute is not
   /// matching the expectations of the properties for this operation. This is
@@ -930,6 +936,17 @@ class alignas(8) Operation final
   setPropertiesFromAttribute(Attribute attr,
                              function_ref<InFlightDiagnostic()> emitError);
 
+  /// Set a named property from the provided attribute.
+  /// This is an expensive operation that can fail if the attribute is not
+  /// matching the expectations of the properties for this operation. This is
+  /// mostly useful for unregistered operations, used when parsing the
+  /// generic format, or in language bindings. An optional diagnostic emitter
+  /// can be passed in for richer errors, if none is passed then behavior is
+  /// undefined in error case.
+  LogicalResult
+  setPropertyFromAttribute(StringRef name, Attribute attr,
+                           function_ref<InFlightDiagnostic()> emitError);
+
   /// Copy properties from an existing other properties object. The two objects
   /// must be the same type.
   void copyProperties(OpaqueProperties rhs);

mlir/include/mlir/IR/OperationSupport.h

@@ -139,6 +139,12 @@ class OperationName {
     setPropertiesFromAttr(OperationName, OpaqueProperties, Attribute,
                           function_ref<InFlightDiagnostic()> emitError) = 0;
     virtual Attribute getPropertiesAsAttr(Operation *) = 0;
+    virtual LogicalResult
+    setPropertyFromAttr(OperationName, OpaqueProperties, StringRef name,
+                        Attribute,
+                        function_ref<InFlightDiagnostic()> emitError) = 0;
+    virtual FailureOr<Attribute> getPropertyAsAttr(Operation *,
+                                                   StringRef name) = 0;
     virtual void copyProperties(OpaqueProperties, OpaqueProperties) = 0;
     virtual bool compareProperties(OpaqueProperties, OpaqueProperties) = 0;
     virtual llvm::hash_code hashProperties(OpaqueProperties) = 0;
@@ -220,6 +226,11 @@ class OperationName {
     setPropertiesFromAttr(OperationName, OpaqueProperties, Attribute,
                           function_ref<InFlightDiagnostic()> emitError) final;
     Attribute getPropertiesAsAttr(Operation *) final;
+    LogicalResult
+    setPropertyFromAttr(OperationName, OpaqueProperties, StringRef name,
+                        Attribute,
+                        function_ref<InFlightDiagnostic()> emitError) final;
+    FailureOr<Attribute> getPropertyAsAttr(Operation *, StringRef name) final;
     void copyProperties(OpaqueProperties, OpaqueProperties) final;
     bool compareProperties(OpaqueProperties, OpaqueProperties) final;
     llvm::hash_code hashProperties(OpaqueProperties) final;
@@ -441,6 +452,20 @@ class OperationName {
                                             emitError);
   }
 
+  /// Return an op property converted to an Attribute.
+  FailureOr<Attribute> getOpPropertyAsAttribute(Operation *op,
+                                                StringRef name) const {
+    return getImpl()->getPropertyAsAttr(op, name);
+  }
+
+  /// Define an op property from the provided Attribute.
+  LogicalResult setOpPropertyFromAttribute(
+      OperationName opName, OpaqueProperties properties, StringRef name,
+      Attribute attr, function_ref<InFlightDiagnostic()> emitError) const {
+    return getImpl()->setPropertyFromAttr(opName, properties, name, attr,
+                                          emitError);
+  }
+
   void copyOpProperties(OpaqueProperties lhs, OpaqueProperties rhs) const {
     return getImpl()->copyProperties(lhs, rhs);
   }
@@ -650,6 +675,26 @@ class RegisteredOperationName : public OperationName {
       }
       return {};
     }
+    LogicalResult
+    setPropertyFromAttr(OperationName opName, OpaqueProperties properties,
+                        StringRef name, Attribute attr,
+                        function_ref<InFlightDiagnostic()> emitError) final {
+      if constexpr (hasProperties) {
+        auto p = properties.as<Properties *>();
+        return ConcreteOp::setPropertyFromAttr(*p, name, attr, emitError);
+      }
+      emitError() << "this operation does not support properties";
+      return failure();
+    }
+    FailureOr<Attribute> getPropertyAsAttr(Operation *op,
+                                           StringRef name) final {
+      if constexpr (hasProperties) {
+        auto concreteOp = cast<ConcreteOp>(op);
+        return ConcreteOp::getPropertyAsAttr(concreteOp->getContext(),
+                                             concreteOp.getProperties(), name);
+      }
+      return failure();
+    }
     bool compareProperties(OpaqueProperties lhs, OpaqueProperties rhs) final {
       if constexpr (hasProperties) {
         return *lhs.as<Properties *>() == *rhs.as<Properties *>();

mlir/lib/IR/MLIRContext.cpp

@@ -901,6 +901,20 @@ Attribute
 OperationName::UnregisteredOpModel::getPropertiesAsAttr(Operation *op) {
   return *op->getPropertiesStorage().as<Attribute *>();
 }
+LogicalResult OperationName::UnregisteredOpModel::setPropertyFromAttr(
+    OperationName opName, OpaqueProperties properties, StringRef name,
+    Attribute attr, function_ref<InFlightDiagnostic()> emitError) {
+  assert(false &&
+         "`setPropertyFromAttr` doesn't work with unregistered operations.");
+  return failure();
+}
+FailureOr<Attribute>
+OperationName::UnregisteredOpModel::getPropertyAsAttr(Operation *op,
+                                                      StringRef name) {
+  assert(false &&
+         "`getPropertyAsAttr` doesn't work with unregistered operations.");
+  return failure();
+}
 void OperationName::UnregisteredOpModel::copyProperties(OpaqueProperties lhs,
                                                         OpaqueProperties rhs) {
   *lhs.as<Attribute *>() = *rhs.as<Attribute *>();

mlir/lib/IR/Operation.cpp

@@ -351,6 +351,12 @@ Attribute Operation::getPropertiesAsAttribute() {
     return *getPropertiesStorage().as<Attribute *>();
   return info->getOpPropertiesAsAttribute(this);
 }
+FailureOr<Attribute> Operation::getPropertyAsAttribute(StringRef name) {
+  std::optional<RegisteredOperationName> info = getRegisteredInfo();
+  assert(info &&
+         "`getPropertyAsAttribute` only works for registered operations.");
+  return info->getOpPropertyAsAttribute(this, name);
+}
 LogicalResult Operation::setPropertiesFromAttribute(
     Attribute attr, function_ref<InFlightDiagnostic()> emitError) {
   std::optional<RegisteredOperationName> info = getRegisteredInfo();
@@ -361,6 +367,15 @@ LogicalResult Operation::setPropertiesFromAttribute(
   return info->setOpPropertiesFromAttribute(
       this->getName(), this->getPropertiesStorage(), attr, emitError);
 }
+LogicalResult Operation::setPropertyFromAttribute(
+    StringRef name, Attribute attr,
+    function_ref<InFlightDiagnostic()> emitError) {
+  std::optional<RegisteredOperationName> info = getRegisteredInfo();
+  assert(info &&
+         "`setPropertyFromAttribute` only works for registered operations.");
+  return info->setOpPropertyFromAttribute(
+      this->getName(), this->getPropertiesStorage(), name, attr, emitError);
+}
 
 void Operation::copyProperties(OpaqueProperties rhs) {
   name.copyOpProperties(getPropertiesStorage(), rhs);