diff --git a/mlir/lib/Analysis/Liveness.cpp b/mlir/lib/Analysis/Liveness.cpp
--- a/mlir/lib/Analysis/Liveness.cpp
+++ b/mlir/lib/Analysis/Liveness.cpp
@@ -27,7 +27,7 @@
   using ValueSetT = Liveness::ValueSetT;
 
   /// Constructs an empty block builder.
-  BlockInfoBuilder() {}
+  BlockInfoBuilder() = default;
 
   /// Fills the block builder with initial liveness information.
   BlockInfoBuilder(Block *block) : block(block) {
diff --git a/mlir/lib/Dialect/Linalg/Transforms/ComprehensiveBufferizePass.cpp b/mlir/lib/Dialect/Linalg/Transforms/ComprehensiveBufferizePass.cpp
--- a/mlir/lib/Dialect/Linalg/Transforms/ComprehensiveBufferizePass.cpp
+++ b/mlir/lib/Dialect/Linalg/Transforms/ComprehensiveBufferizePass.cpp
@@ -36,8 +36,7 @@
   LinalgComprehensiveModuleBufferize() = default;
 
   LinalgComprehensiveModuleBufferize(
-      const LinalgComprehensiveModuleBufferize &p)
-      : LinalgComprehensiveModuleBufferizeBase(p) {}
+      const LinalgComprehensiveModuleBufferize &p) = default;
 
   void runOnOperation() override;
 
diff --git a/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorPasses.cpp b/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorPasses.cpp
--- a/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorPasses.cpp
+++ b/mlir/lib/Dialect/SparseTensor/Transforms/SparseTensorPasses.cpp
@@ -33,8 +33,7 @@
 struct SparsificationPass : public SparsificationBase<SparsificationPass> {
 
   SparsificationPass() = default;
-  SparsificationPass(const SparsificationPass &pass)
-      : SparsificationBase<SparsificationPass>(pass) {}
+  SparsificationPass(const SparsificationPass &pass) = default;
 
   /// Returns parallelization strategy given on command line.
   SparseParallelizationStrategy parallelOption() {
diff --git a/mlir/lib/Pass/PassRegistry.cpp b/mlir/lib/Pass/PassRegistry.cpp
--- a/mlir/lib/Pass/PassRegistry.cpp
+++ b/mlir/lib/Pass/PassRegistry.cpp
@@ -504,7 +504,7 @@
 /// This struct represents the possible data entries in a parsed pass pipeline
 /// list.
 struct PassArgData {
-  PassArgData() {}
+  PassArgData() = default;
   PassArgData(const PassRegistryEntry *registryEntry)
       : registryEntry(registryEntry) {}
 
diff --git a/mlir/test/lib/Dialect/Affine/TestAffineLoopUnswitching.cpp b/mlir/test/lib/Dialect/Affine/TestAffineLoopUnswitching.cpp
--- a/mlir/test/lib/Dialect/Affine/TestAffineLoopUnswitching.cpp
+++ b/mlir/test/lib/Dialect/Affine/TestAffineLoopUnswitching.cpp
@@ -30,8 +30,7 @@
     return "Tests affine loop unswitching / if/else hoisting";
   }
   TestAffineLoopUnswitching() = default;
-  TestAffineLoopUnswitching(const TestAffineLoopUnswitching &pass)
-      : PassWrapper(pass) {}
+  TestAffineLoopUnswitching(const TestAffineLoopUnswitching &pass) = default;
 
   void runOnFunction() override;
 
diff --git a/mlir/test/lib/Dialect/Linalg/TestLinalgDistribution.cpp b/mlir/test/lib/Dialect/Linalg/TestLinalgDistribution.cpp
--- a/mlir/test/lib/Dialect/Linalg/TestLinalgDistribution.cpp
+++ b/mlir/test/lib/Dialect/Linalg/TestLinalgDistribution.cpp
@@ -43,8 +43,7 @@
   StringRef getArgument() const final { return "test-linalg-distribution"; }
   StringRef getDescription() const final { return "Test Linalg distribution."; }
   TestLinalgDistribution() = default;
-  TestLinalgDistribution(const TestLinalgDistribution &pass)
-      : PassWrapper(pass) {}
+  TestLinalgDistribution(const TestLinalgDistribution &pass) = default;
   void getDependentDialects(DialectRegistry &registry) const override {
     registry.insert<AffineDialect, gpu::GPUDialect>();
   }
diff --git a/mlir/test/lib/Dialect/Vector/TestVectorTransforms.cpp b/mlir/test/lib/Dialect/Vector/TestVectorTransforms.cpp
--- a/mlir/test/lib/Dialect/Vector/TestVectorTransforms.cpp
+++ b/mlir/test/lib/Dialect/Vector/TestVectorTransforms.cpp
@@ -552,8 +552,7 @@
                          FunctionPass> {
   TestVectorTransferCollapseInnerMostContiguousDims() = default;
   TestVectorTransferCollapseInnerMostContiguousDims(
-      const TestVectorTransferCollapseInnerMostContiguousDims &pass)
-      : PassWrapper(pass) {}
+      const TestVectorTransferCollapseInnerMostContiguousDims &pass) = default;
 
   void getDependentDialects(DialectRegistry &registry) const override {
     registry.insert<memref::MemRefDialect, AffineDialect>();