Apply clang-tidy fixes for modernize-use-equals-default to MLIR (NFC)

mlir/include/mlir/Analysis/AliasAnalysis.h

@@ -180,7 +180,7 @@ struct AliasAnalysisTraits {
   /// querying into derived analysis implementations.
   class Concept {
   public:
-    virtual ~Concept() {}
+    virtual ~Concept() = default;
 
     /// Given two values, return their aliasing behavior.
     virtual AliasResult alias(Value lhs, Value rhs) = 0;

mlir/include/mlir/Dialect/Affine/IR/AffineValueMap.h

@@ -35,7 +35,7 @@ class AffineValueMap {
 public:
   // Creates an empty AffineValueMap (users should call 'reset' to reset map
   // and operands).
-  AffineValueMap() {}
+  AffineValueMap() = default;
   AffineValueMap(AffineMap map, ValueRange operands, ValueRange results = {});
 
   ~AffineValueMap();

mlir/include/mlir/Dialect/Linalg/ComprehensiveBufferize/BufferizableOpInterface.h

@@ -67,7 +67,7 @@ std::unique_ptr<AllocationCallbacks> defaultAllocationCallbacks();
 /// executed after the analysis, but before bufferization. They can be used to
 /// implement custom dialect-specific optimizations.
 struct PostAnalysisStep {
-  virtual ~PostAnalysisStep() {}
+  virtual ~PostAnalysisStep() = default;
 
   /// Run the post analysis step. This function may modify the IR, but must keep
   /// `aliasInfo` consistent. Newly created operations and operations that

mlir/include/mlir/Dialect/Quant/UniformSupport.h

@@ -120,7 +120,7 @@ public:
     return isSigned ? qValue.getSExtValue() : qValue.getZExtValue();
   }
 
-  virtual ~UniformQuantizedValueConverter() {}
+  virtual ~UniformQuantizedValueConverter() = default;
 
 private:
   // An optimized implementation to quantize f32 to i8/u8 with C++ native

mlir/include/mlir/IR/AffineMap.h

@@ -39,7 +39,7 @@ class AffineMap {
 public:
   using ImplType = detail::AffineMapStorage;
 
-  constexpr AffineMap() {}
+  constexpr AffineMap() = default;
   explicit AffineMap(ImplType *map) : map(map) {}
 
   /// Returns a zero result affine map with no dimensions or symbols: () -> ().
@@ -323,7 +323,7 @@ inline ::llvm::hash_code hash_value(AffineMap arg) {
 /// A mutable affine map. Its affine expressions are however unique.
 struct MutableAffineMap {
 public:
-  MutableAffineMap() {}
+  MutableAffineMap() = default;
   MutableAffineMap(AffineMap map);
 
   ArrayRef<AffineExpr> getResults() const { return results; }

mlir/include/mlir/IR/Block.h

@@ -29,7 +29,7 @@ class ValueTypeRange;
 class Block : public IRObjectWithUseList<BlockOperand>,
               public llvm::ilist_node_with_parent<Block, Region> {
 public:
-  explicit Block() {}
+  explicit Block() = default;
   ~Block();
 
   void clear() {

mlir/include/mlir/IR/BuiltinAttributeInterfaces.h

@@ -109,7 +109,7 @@ private:
     /// This allows for all iterator and element types to be completely
     /// type-erased.
     struct OpaqueIteratorBase {
-      virtual ~OpaqueIteratorBase() {}
+      virtual ~OpaqueIteratorBase() = default;
       virtual std::unique_ptr<OpaqueIteratorBase> clone() const = 0;
     };
     /// This class is used to represent the abstract base of an opaque iterator

mlir/include/mlir/IR/PatternMatch.h

@@ -33,7 +33,7 @@ class PatternBenefit {
   enum { ImpossibleToMatchSentinel = 65535 };
 
 public:
-  PatternBenefit() {}
+  PatternBenefit() = default;
   PatternBenefit(unsigned benefit);
   PatternBenefit(const PatternBenefit &) = default;
   PatternBenefit &operator=(const PatternBenefit &) = default;
@@ -243,7 +243,7 @@ private:
 ///
 class RewritePattern : public Pattern {
 public:
-  virtual ~RewritePattern() {}
+  virtual ~RewritePattern() = default;
 
   /// Rewrite the IR rooted at the specified operation with the result of
   /// this pattern, generating any new operations with the specified

mlir/include/mlir/Interfaces/SideEffectInterfaces.h

@@ -77,7 +77,7 @@ private:
 /// class represents an abstract interface for a given resource.
 class Resource {
 public:
-  virtual ~Resource() {}
+  virtual ~Resource() = default;
 
   /// This base class is used for derived effects that are non-parametric.
   template <typename DerivedResource, typename BaseResource = Resource>

mlir/include/mlir/Support/DebugAction.h

@@ -48,7 +48,7 @@ public:
   /// This class represents the base class of a debug action handler.
   class HandlerBase {
   public:
-    virtual ~HandlerBase() {}
+    virtual ~HandlerBase() = default;
 
     /// Return the unique handler id of this handler, use for casting
     /// functionality.

mlir/include/mlir/Support/Timing.h

@@ -184,8 +184,8 @@ private:
 /// manager implementations.
 class Timer {
 public:
-  Timer() {}
+  Timer() = default;
-  Timer(const Timer &other) : tm(other.tm), handle(other.handle) {}
+  Timer(const Timer &other) = default;
   Timer(Timer &&other) : Timer(other) {
     other.tm = nullptr;
     other.handle = nullptr;

mlir/include/mlir/Target/LLVMIR/ModuleTranslation.h

@@ -191,7 +191,7 @@ public:
   /// Common CRTP base class for ModuleTranslation stack frames.
   class StackFrame {
   public:
-    virtual ~StackFrame() {}
+    virtual ~StackFrame() = default;
     TypeID getTypeID() const { return typeID; }
 
   protected:

mlir/lib/Bindings/Python/IRModule.h

@@ -56,7 +56,7 @@ public:
   }
   PyObjectRef(const PyObjectRef &other)
       : referrent(other.referrent), object(other.object /* copies */) {}
-  ~PyObjectRef() {}
+  ~PyObjectRef() = default;
 
   int getRefCount() {
     if (!object)

mlir/lib/Parser/AsmParserImpl.h

@@ -27,7 +27,7 @@ class AsmParserImpl : public BaseT {
 public:
   AsmParserImpl(llvm::SMLoc nameLoc, Parser &parser)
       : nameLoc(nameLoc), parser(parser) {}
-  ~AsmParserImpl() override {}
+  ~AsmParserImpl() override = default;
 
   /// Return the location of the original name token.
   llvm::SMLoc getNameLoc() const override { return nameLoc; }