IR: make subtypes of IrDeclaration classes

compiler/ir/ir.tree.impl/src/org/jetbrains/kotlin/ir/declarations/impl/IrAnonymousInitializerImpl.kt

@@ -32,7 +32,7 @@ class IrAnonymousInitializerImpl(
     override var origin: IrDeclarationOrigin,
     override val symbol: IrAnonymousInitializerSymbol,
     override val isStatic: Boolean = false
-) : IrAnonymousInitializer {
+) : IrAnonymousInitializer() {
     init {
         symbol.bind(this)
     }

compiler/ir/ir.tree.impl/src/org/jetbrains/kotlin/ir/declarations/impl/IrClassImpl.kt

@@ -41,7 +41,7 @@ class IrClassImpl(
     override val isExpect: Boolean = false,
     override val isFun: Boolean = false,
     override val source: SourceElement = SourceElement.NO_SOURCE
-) : IrClass {
+) : IrClass() {
     init {
         symbol.bind(this)
     }

compiler/ir/ir.tree.impl/src/org/jetbrains/kotlin/ir/declarations/impl/IrConstructorImpl.kt

@@ -38,7 +38,7 @@ class IrConstructorImpl(
     override val isExternal: Boolean,
     override val isPrimary: Boolean,
     override val isExpect: Boolean,
-) : IrConstructor {
+) : IrConstructor() {
     init {
         symbol.bind(this)
     }

compiler/ir/ir.tree.impl/src/org/jetbrains/kotlin/ir/declarations/impl/IrEnumEntryImpl.kt

@@ -30,7 +30,7 @@ class IrEnumEntryImpl(
     override var origin: IrDeclarationOrigin,
     override val symbol: IrEnumEntrySymbol,
     override val name: Name
-) : IrEnumEntry {
+) : IrEnumEntry() {
     init {
         symbol.bind(this)
     }

compiler/ir/ir.tree.impl/src/org/jetbrains/kotlin/ir/declarations/impl/IrErrorDeclarationImpl.kt

@@ -29,7 +29,7 @@ class IrErrorDeclarationImpl(
     override val startOffset: Int,
     override val endOffset: Int,
     override val descriptor: DeclarationDescriptor
-) : IrErrorDeclaration {
+) : IrErrorDeclaration() {
     override var origin: IrDeclarationOrigin = IrDeclarationOrigin.DEFINED
 
     override val factory: IrFactory

compiler/ir/ir.tree.impl/src/org/jetbrains/kotlin/ir/declarations/impl/IrFieldImpl.kt

@@ -38,7 +38,7 @@ class IrFieldImpl(
     override val isFinal: Boolean,
     override val isExternal: Boolean,
     override val isStatic: Boolean,
-) : IrField {
+) : IrField() {
     init {
         symbol.bind(this)
     }

compiler/ir/ir.tree.impl/src/org/jetbrains/kotlin/ir/declarations/impl/IrFunctionImpl.kt

@@ -32,7 +32,7 @@ abstract class IrFunctionCommonImpl(
     override val isOperator: Boolean,
     override val isInfix: Boolean,
     override val isExpect: Boolean,
-) : IrSimpleFunction {
+) : IrSimpleFunction() {
     override val factory: IrFactory
         get() = IrFactoryImpl
 

compiler/ir/ir.tree.impl/src/org/jetbrains/kotlin/ir/declarations/impl/IrLocalDelegatedPropertyImpl.kt

@@ -32,7 +32,7 @@ class IrLocalDelegatedPropertyImpl(
     override val name: Name,
     override val type: IrType,
     override val isVar: Boolean
-) : IrLocalDelegatedProperty {
+) : IrLocalDelegatedProperty() {
     init {
         symbol.bind(this)
     }

compiler/ir/ir.tree.impl/src/org/jetbrains/kotlin/ir/declarations/impl/IrPropertyImpl.kt

@@ -38,7 +38,7 @@ abstract class IrPropertyCommonImpl(
     override val isDelegated: Boolean,
     override val isExternal: Boolean,
     override val isExpect: Boolean,
-) : IrProperty {
+) : IrProperty() {
     override val factory: IrFactory
         get() = IrFactoryImpl
 

compiler/ir/ir.tree.impl/src/org/jetbrains/kotlin/ir/declarations/impl/IrTypeAliasImpl.kt

@@ -23,7 +23,7 @@ class IrTypeAliasImpl(
     override val expandedType: IrType,
     override val isActual: Boolean,
     override var origin: IrDeclarationOrigin
-) : IrTypeAlias {
+) : IrTypeAlias() {
     init {
         symbol.bind(this)
     }

compiler/ir/ir.tree.impl/src/org/jetbrains/kotlin/ir/declarations/impl/IrTypeParameterImpl.kt

@@ -38,7 +38,7 @@ class IrTypeParameterImpl(
     override val index: Int,
     override val isReified: Boolean,
     override val variance: Variance
-) : IrTypeParameter {
+) : IrTypeParameter() {
     init {
         symbol.bind(this)
     }

compiler/ir/ir.tree.impl/src/org/jetbrains/kotlin/ir/declarations/impl/IrValueParameterImpl.kt

@@ -39,7 +39,7 @@ class IrValueParameterImpl(
     override val varargElementType: IrType?,
     override val isCrossinline: Boolean,
     override val isNoinline: Boolean
-) : IrValueParameter {
+) : IrValueParameter() {
     @ObsoleteDescriptorBasedAPI
     override val descriptor: ParameterDescriptor
         get() = symbol.descriptor