[llvm] [mlir] [mlir] Mark `isa/dyn_cast/cast/...` member functions deprecated. (PR #90413)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-llvm-adt

Author: Christian Sigg (chsigg)

<details>
<summary>Changes</summary>

All users have been removed in fac349a169976f822fb27f03e623fa0d28aec1f3.

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

---
Full diff: https://github.com/llvm/llvm-project/pull/90413.diff


4 Files Affected:

- (modified) llvm/include/llvm/ADT/TypeSwitch.h (+3) 
- (modified) mlir/include/mlir/IR/Attributes.h (+5) 
- (modified) mlir/include/mlir/IR/Location.h (+3) 
- (modified) mlir/include/mlir/IR/Types.h (+5) 


``````````diff
diff --git a/llvm/include/llvm/ADT/TypeSwitch.h b/llvm/include/llvm/ADT/TypeSwitch.h
index 10a2d48e918db9..14ad56ad575ffc 100644
--- a/llvm/include/llvm/ADT/TypeSwitch.h
+++ b/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
diff --git a/mlir/include/mlir/IR/Attributes.h b/mlir/include/mlir/IR/Attributes.h
index cc0cee6a31183c..8a077865b51b5f 100644
--- a/mlir/include/mlir/IR/Attributes.h
+++ b/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
diff --git a/mlir/include/mlir/IR/Location.h b/mlir/include/mlir/IR/Location.h
index aa8314f38cdfac..423b4d19b5b944 100644
--- a/mlir/include/mlir/IR/Location.h
+++ b/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);
   }
diff --git a/mlir/include/mlir/IR/Types.h b/mlir/include/mlir/IR/Types.h
index a89e13b625bf40..65824531fdc908 100644
--- a/mlir/include/mlir/IR/Types.h
+++ b/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

``````````

</details>


https://github.com/llvm/llvm-project/pull/90413