[mlir] Mark isa/dyn_cast/cast/... member functions deprecated.

All users have been removed in fac349a and bd9fdce.

Except for TypeSwitch, where the deprecation warning needs to be disabled until the functions are removed.

Author: chsigg

llvm/include/llvm/ADT/TypeSwitch.h

@@ -74,7 +74,10 @@ template <typename DerivedT, typename T> class TypeSwitchBase {
       ValueT &&value,
       std::enable_if_t<is_detected<has_dyn_cast_t, ValueT, CastT>::value> * =
           nullptr) {
+    // Silence warnings about MLIR's deprecated dyn_cast member functions.
+    LLVM_SUPPRESS_DEPRECATED_DECLARATIONS_PUSH;
     return value.template dyn_cast<CastT>();
+    LLVM_SUPPRESS_DEPRECATED_DECLARATIONS_POP;
   }
 
   /// Attempt to dyn_cast the given `value` to `CastT`. This overload is

mlir/include/mlir/IR/Attributes.h

@@ -50,14 +50,19 @@ class Attribute {
   /// Casting utility functions. These are deprecated and will be removed,
   /// please prefer using the `llvm` namespace variants instead.
   template <typename... Tys>
+  [[deprecated("Use mlir::isa<U>() instead")]]
   bool isa() const;
   template <typename... Tys>
+  [[deprecated("Use mlir::isa_and_nonnull<U>() instead")]]
   bool isa_and_nonnull() const;
   template <typename U>
+  [[deprecated("Use mlir::dyn_cast<U>() instead")]]
   U dyn_cast() const;
   template <typename U>
+  [[deprecated("Use mlir::dyn_cast_or_null<U>() instead")]]
   U dyn_cast_or_null() const;
   template <typename U>
+  [[deprecated("Use mlir::cast<U>() instead")]]
   U cast() const;
 
   /// Return a unique identifier for the concrete attribute type. This is used

mlir/include/mlir/IR/Location.h

@@ -78,14 +78,17 @@ class Location {
 
   /// Type casting utilities on the underlying location.
   template <typename U>
+  [[deprecated("Use mlir::isa<U>() instead")]]
   bool isa() const {
     return llvm::isa<U>(*this);
   }
   template <typename U>
+  [[deprecated("Use mlir::dyn_cast<U>() instead")]]
   U dyn_cast() const {
     return llvm::dyn_cast<U>(*this);
   }
   template <typename U>
+  [[deprecated("Use mlir::cast<U>() instead")]]
   U cast() const {
     return llvm::cast<U>(*this);
   }

mlir/include/mlir/IR/Types.h

@@ -97,14 +97,19 @@ class Type {
   bool operator!() const { return impl == nullptr; }
 
   template <typename... Tys>
+  [[deprecated("Use mlir::isa<U>() instead")]]
   bool isa() const;
   template <typename... Tys>
+  [[deprecated("Use mlir::isa_and_nonnull<U>() instead")]]
   bool isa_and_nonnull() const;
   template <typename U>
+  [[deprecated("Use mlir::dyn_cast<U>() instead")]]
   U dyn_cast() const;
   template <typename U>
+  [[deprecated("Use mlir::dyn_cast_or_null<U>() instead")]]
   U dyn_cast_or_null() const;
   template <typename U>
+  [[deprecated("Use mlir::cast<U>() instead")]]
   U cast() const;
 
   /// Return a unique identifier for the concrete type. This is used to support