IR: consolidate generation of synthetic members for data class

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/ClassMemberGenerator.kt

@@ -62,6 +62,11 @@ internal class ClassMemberGenerator(
                     else -> null
                 }
             }
+            // Add synthetic members *before* fake override generations.
+            // Otherwise, redundant members, e.g., synthetic toString _and_ fake override toString, will be added.
+            if (irClass.isData && klass.getPrimaryConstructorIfAny() != null) {
+                processedCallableNames += DataClassMembersGenerator(components).generateDataClassMembers(irClass)
+            }
             with(fakeOverrideGenerator) { irClass.addFakeOverrides(klass, processedCallableNames) }
             klass.declarations.forEach {
                 if (it !is FirTypeAlias && (it !is FirConstructor || !it.isPrimary)) {

compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/DataClassMembersGenerator.kt

@@ -0,0 +1,213 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.fir.backend.generators
+
+import org.jetbrains.kotlin.descriptors.CallableDescriptor
+import org.jetbrains.kotlin.descriptors.FunctionDescriptor
+import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.descriptors.Visibilities
+import org.jetbrains.kotlin.fir.backend.Fir2IrComponents
+import org.jetbrains.kotlin.ir.UNDEFINED_OFFSET
+import org.jetbrains.kotlin.ir.builders.IrGeneratorContextBase
+import org.jetbrains.kotlin.ir.declarations.IrClass
+import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
+import org.jetbrains.kotlin.ir.declarations.IrFunction
+import org.jetbrains.kotlin.ir.declarations.IrProperty
+import org.jetbrains.kotlin.ir.declarations.MetadataSource
+import org.jetbrains.kotlin.ir.declarations.impl.IrFunctionImpl
+import org.jetbrains.kotlin.ir.declarations.impl.IrValueParameterImpl
+import org.jetbrains.kotlin.ir.descriptors.WrappedSimpleFunctionDescriptor
+import org.jetbrains.kotlin.ir.descriptors.WrappedValueParameterDescriptor
+import org.jetbrains.kotlin.ir.expressions.IrMemberAccessExpression
+import org.jetbrains.kotlin.ir.util.DataClassMembersGenerator
+import org.jetbrains.kotlin.ir.util.defaultType
+import org.jetbrains.kotlin.name.Name
+
+class DataClassMembersGenerator(val components: Fir2IrComponents) {
+
+    // TODO: generateInlineClassMembers
+
+    fun generateDataClassMembers(irClass: IrClass): List<Name> =
+        MyDataClassMethodsGenerator(irClass, IrDeclarationOrigin.GENERATED_DATA_CLASS_MEMBER).generate()
+
+    private inner class MyDataClassMethodsGenerator(
+        val irClass: IrClass,
+        val origin: IrDeclarationOrigin
+    ) {
+        val properties = irClass.declarations.filterIsInstance<IrProperty>().map { it.descriptor }
+
+        private val irDataClassMembersGenerator = object : DataClassMembersGenerator(
+            IrGeneratorContextBase(components.irBuiltIns),
+            components.symbolTable,
+            irClass,
+            origin
+        ) {
+            override fun declareSimpleFunction(startOffset: Int, endOffset: Int, functionDescriptor: FunctionDescriptor): IrFunction {
+                throw IllegalStateException("Not expect to see function declaration.")
+            }
+
+            override fun generateSyntheticFunctionParameterDeclarations(irFunction: IrFunction) {
+                // TODO
+            }
+
+            override fun commitSubstituted(irMemberAccessExpression: IrMemberAccessExpression, descriptor: CallableDescriptor) {
+                // TODO
+            }
+        }
+
+        fun generateDispatchReceiverParameter(irFunction: IrFunction, valueParameterDescriptor: WrappedValueParameterDescriptor) =
+            components.symbolTable.declareValueParameter(
+                UNDEFINED_OFFSET,
+                UNDEFINED_OFFSET,
+                origin,
+                valueParameterDescriptor,
+                components.irBuiltIns.anyNType
+            ) { symbol ->
+                IrValueParameterImpl(
+                    UNDEFINED_OFFSET,
+                    UNDEFINED_OFFSET,
+                    origin,
+                    symbol,
+                    Name.special("<this>"),
+                    -1,
+                    irClass.defaultType,
+                    null,
+                    isCrossinline = false,
+                    isNoinline = false
+                )
+            }.apply {
+                parent = irFunction
+                valueParameterDescriptor.bind(this)
+            }
+
+        fun generate(): List<Name> {
+            if (properties.isEmpty()) {
+                return emptyList()
+            }
+
+            // TODO: consolidate componentN() and copy(...) too?
+
+            // TODO: generate equals, hashCode, and toString only if needed
+            val equalsDescriptor = WrappedSimpleFunctionDescriptor()
+            val equalsDispatchReceiverDescriptor = WrappedValueParameterDescriptor()
+            val equalsValueParameterDescriptor = WrappedValueParameterDescriptor()
+            val equalsFunction =
+                components.symbolTable.declareSimpleFunction(UNDEFINED_OFFSET, UNDEFINED_OFFSET, origin, equalsDescriptor) { symbol ->
+                    IrFunctionImpl(
+                        UNDEFINED_OFFSET,
+                        UNDEFINED_OFFSET,
+                        origin,
+                        symbol,
+                        Name.identifier("equals"),
+                        Visibilities.PUBLIC,
+                        Modality.OPEN,
+                        components.irBuiltIns.booleanType,
+                        isInline = false,
+                        isExternal = false,
+                        isTailrec = false,
+                        isSuspend = false,
+                        isExpect = false,
+                        isFakeOverride = false,
+                        isOperator = false
+                    ).apply {
+                        metadata = MetadataSource.Function(descriptor)
+                    }
+                }.apply {
+                    parent = irClass
+                    equalsDescriptor.bind(this)
+                    dispatchReceiverParameter = generateDispatchReceiverParameter(this, equalsDispatchReceiverDescriptor)
+                    val irFunction = this
+                    valueParameters +=
+                        components.symbolTable.declareValueParameter(
+                            UNDEFINED_OFFSET,
+                            UNDEFINED_OFFSET,
+                            origin,
+                            equalsValueParameterDescriptor,
+                            components.irBuiltIns.anyNType
+                        ) { symbol ->
+                            IrValueParameterImpl(
+                                UNDEFINED_OFFSET,
+                                UNDEFINED_OFFSET,
+                                origin,
+                                symbol,
+                                Name.identifier("other"),
+                                0,
+                                components.irBuiltIns.anyNType,
+                                null,
+                                isCrossinline = false,
+                                isNoinline = false
+                            )
+                        }.apply {
+                            parent = irFunction
+                            equalsValueParameterDescriptor.bind(this)
+                        }
+                }
+            irDataClassMembersGenerator.generateEqualsMethod(equalsFunction, properties)
+
+            val hashCodeDescriptor = WrappedSimpleFunctionDescriptor()
+            val hashCodeDispatchReceiverDescriptor = WrappedValueParameterDescriptor()
+            val hashCodeFunction =
+                components.symbolTable.declareSimpleFunction(UNDEFINED_OFFSET, UNDEFINED_OFFSET, origin, hashCodeDescriptor) { symbol ->
+                    IrFunctionImpl(
+                        UNDEFINED_OFFSET,
+                        UNDEFINED_OFFSET,
+                        origin,
+                        symbol,
+                        Name.identifier("hashCode"),
+                        Visibilities.PUBLIC,
+                        Modality.OPEN,
+                        components.irBuiltIns.intType,
+                        isInline = false,
+                        isExternal = false,
+                        isTailrec = false,
+                        isSuspend = false,
+                        isExpect = false,
+                        isFakeOverride = false,
+                        isOperator = false
+                    ).apply {
+                        metadata = MetadataSource.Function(descriptor)
+                    }
+                }.apply {
+                    parent = irClass
+                    hashCodeDescriptor.bind(this)
+                    dispatchReceiverParameter = generateDispatchReceiverParameter(this, hashCodeDispatchReceiverDescriptor)
+                }
+            irDataClassMembersGenerator.generateHashCodeMethod(hashCodeFunction, properties)
+
+            val toStringDescriptor = WrappedSimpleFunctionDescriptor()
+            val toStringDispatchReceiverDescriptor = WrappedValueParameterDescriptor()
+            val toStringFunction =
+                components.symbolTable.declareSimpleFunction(UNDEFINED_OFFSET, UNDEFINED_OFFSET, origin, toStringDescriptor) { symbol ->
+                    IrFunctionImpl(
+                        UNDEFINED_OFFSET,
+                        UNDEFINED_OFFSET,
+                        origin,
+                        symbol,
+                        Name.identifier("toString"),
+                        Visibilities.PUBLIC,
+                        Modality.OPEN,
+                        components.irBuiltIns.stringType,
+                        isInline = false,
+                        isExternal = false,
+                        isTailrec = false,
+                        isSuspend = false,
+                        isExpect = false,
+                        isFakeOverride = false,
+                        isOperator = false
+                    ).apply {
+                        metadata = MetadataSource.Function(descriptor)
+                    }
+                }.apply {
+                    parent = irClass
+                    toStringDescriptor.bind(this)
+                    dispatchReceiverParameter = generateDispatchReceiverParameter(this, toStringDispatchReceiverDescriptor)
+                }
+            irDataClassMembersGenerator.generateToStringMethod(toStringFunction, properties)
+
+            return listOf(equalsFunction.name, hashCodeFunction.name, toStringFunction.name)
+        }
+    }
+}

compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/KotlinUtils.kt

@@ -65,12 +65,6 @@ fun KtSecondaryConstructor.isConstructorDelegatingToSuper(bindingContext: Bindin
     }
 }
 
-inline fun ClassDescriptor.findFirstFunction(name: String, predicate: (CallableMemberDescriptor) -> Boolean) =
-    unsubstitutedMemberScope.findFirstFunction(name, predicate)
-
-inline fun MemberScope.findFirstFunction(name: String, predicate: (CallableMemberDescriptor) -> Boolean) =
-    getContributedFunctions(Name.identifier(name), NoLookupLocation.FROM_BACKEND).first(predicate)
-
 fun MemberScope.findSingleFunction(name: Name): FunctionDescriptor =
     getContributedFunctions(name, NoLookupLocation.FROM_BACKEND).single()
 

compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/DataClassMembersGenerator.kt

@@ -18,9 +18,7 @@ package org.jetbrains.kotlin.psi2ir.generators
 
 import com.intellij.psi.PsiElement
 import org.jetbrains.kotlin.backend.common.DataClassMethodGenerator
-import org.jetbrains.kotlin.builtins.KotlinBuiltIns
 import org.jetbrains.kotlin.descriptors.*
-import org.jetbrains.kotlin.incremental.components.NoLookupLocation
 import org.jetbrains.kotlin.ir.UNDEFINED_OFFSET
 import org.jetbrains.kotlin.ir.builders.*
 import org.jetbrains.kotlin.ir.declarations.*
@@ -29,23 +27,14 @@ import org.jetbrains.kotlin.ir.expressions.IrMemberAccessExpression
 import org.jetbrains.kotlin.ir.expressions.impl.IrGetValueImpl
 import org.jetbrains.kotlin.ir.expressions.mapTypeParameters
 import org.jetbrains.kotlin.ir.expressions.mapValueParameters
-import org.jetbrains.kotlin.ir.symbols.IrSimpleFunctionSymbol
+import org.jetbrains.kotlin.ir.util.DataClassMembersGenerator
 import org.jetbrains.kotlin.ir.util.declareSimpleFunctionWithOverrides
-import org.jetbrains.kotlin.ir.util.properties
-import org.jetbrains.kotlin.ir.util.referenceFunction
-import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.psi.KtClassOrObject
 import org.jetbrains.kotlin.psi.KtParameter
-import org.jetbrains.kotlin.psi2ir.containsNull
 import org.jetbrains.kotlin.psi2ir.endOffsetOrUndefined
-import org.jetbrains.kotlin.psi2ir.findFirstFunction
 import org.jetbrains.kotlin.psi2ir.startOffsetOrUndefined
 import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.resolve.DescriptorToSourceUtils
-import org.jetbrains.kotlin.resolve.scopes.MemberScope
-import org.jetbrains.kotlin.types.KotlinType
-import org.jetbrains.kotlin.types.checker.KotlinTypeChecker
-import org.jetbrains.kotlin.types.typeUtil.representativeUpperBound
 
 class DataClassMembersGenerator(
     declarationGenerator: DeclarationGenerator
@@ -99,15 +88,6 @@ class DataClassMembersGenerator(
                 irDispatchReceiverParameter.symbol
             )
         }
-
-        fun irOther(): IrExpression {
-            val irFirstParameter = irFunction.valueParameters[0]
-            return IrGetValueImpl(
-                startOffset, endOffset,
-                irFirstParameter.type,
-                irFirstParameter.symbol
-            )
-        }
     }
 
     private inner class MyDataClassMethodGenerator(
@@ -115,6 +95,20 @@ class DataClassMembersGenerator(
         val irClass: IrClass,
         val origin: IrDeclarationOrigin
     ) : DataClassMethodGenerator(ktClassOrObject, declarationGenerator.context.bindingContext) {
+
+        private val irDataClassMembersGenerator = object : DataClassMembersGenerator(context, context.symbolTable, irClass, origin) {
+            override fun declareSimpleFunction(startOffset: Int, endOffset: Int, functionDescriptor: FunctionDescriptor): IrFunction =
+                declareSimpleFunction(startOffset, endOffset, origin, functionDescriptor)
+
+            override fun generateSyntheticFunctionParameterDeclarations(irFunction: IrFunction) {
+                FunctionGenerator(declarationGenerator).generateSyntheticFunctionParameterDeclarations(irFunction)
+            }
+
+            override fun commitSubstituted(irMemberAccessExpression: IrMemberAccessExpression, descriptor: CallableDescriptor) {
+                irMemberAccessExpression.commitSubstituted(descriptor)
+            }
+        }
+
         private inline fun buildMember(
             function: FunctionDescriptor,
             psiElement: PsiElement? = null,
@@ -144,12 +138,9 @@ class DataClassMembersGenerator(
 
         private fun getBackingField(parameter: ValueParameterDescriptor): IrField {
             val property = getOrFail(BindingContext.VALUE_PARAMETER_AS_PROPERTY, parameter)
-            return getBackingField(property)
+            return irDataClassMembersGenerator.getBackingField(property)
         }
 
-        private fun getBackingField(property: PropertyDescriptor) =
-            irClass.properties.single { it.descriptor == property }.backingField!!
-
         override fun generateCopyFunction(function: FunctionDescriptor, constructorParameters: List<KtParameter>) {
             if (!irClass.isData) return
 
@@ -176,147 +167,13 @@ class DataClassMembersGenerator(
             }
         }
 
-        override fun generateEqualsMethod(function: FunctionDescriptor, properties: List<PropertyDescriptor>) {
-            buildMember(function, declaration) {
-                val irType = classDescriptor.defaultType.toIrType()
+        override fun generateEqualsMethod(function: FunctionDescriptor, properties: List<PropertyDescriptor>) =
+            irDataClassMembersGenerator.generateEqualsMethod(function, properties)
 
-                if (!irClass.isInline) {
-                    +irIfThenReturnTrue(irEqeqeq(irThis(), irOther()))
-                }
-                +irIfThenReturnFalse(irNotIs(irOther(), irType))
-                val otherWithCast = irTemporary(irAs(irOther(), irType), "other_with_cast")
-                for (property in properties) {
-                    val field = getBackingField(property)
-                    val arg1 = irGetField(irThis(), field)
-                    val arg2 = irGetField(irGet(irType, otherWithCast.symbol), field)
-                    +irIfThenReturnFalse(irNotEquals(arg1, arg2))
-                }
-                +irReturnTrue()
-            }
-        }
+        override fun generateHashCodeMethod(function: FunctionDescriptor, properties: List<PropertyDescriptor>) =
+            irDataClassMembersGenerator.generateHashCodeMethod(function, properties)
 
-        private val intClass = context.builtIns.int
-        private val intType = context.builtIns.intType
-
-        private val intTimes =
-            intClass.findFirstFunction("times") { KotlinTypeChecker.DEFAULT.equalTypes(it.valueParameters[0].type, intType) }
-                .let { context.symbolTable.referenceFunction(it) }
-
-        private val intPlus =
-            intClass.findFirstFunction("plus") { KotlinTypeChecker.DEFAULT.equalTypes(it.valueParameters[0].type, intType) }
-                .let { context.symbolTable.referenceFunction(it) }
-
-
-        private fun MemberScope.findHashCodeFunctionOrNull() =
-            getContributedFunctions(Name.identifier("hashCode"), NoLookupLocation.FROM_BACKEND)
-                .find { it.valueParameters.isEmpty() }
-
-        private fun getHashCodeFunction(
-            type: KotlinType,
-            symbolResolve: (FunctionDescriptor) -> IrSimpleFunctionSymbol
-        ): IrSimpleFunctionSymbol =
-            when (val typeConstructorDescriptor = type.constructor.declarationDescriptor) {
-                is ClassDescriptor ->
-                    if (KotlinBuiltIns.isArrayOrPrimitiveArray(typeConstructorDescriptor))
-                        context.irBuiltIns.dataClassArrayMemberHashCodeSymbol
-                    else
-                        symbolResolve(
-                            type.memberScope.findHashCodeFunctionOrNull()
-                                ?: context.builtIns.any.unsubstitutedMemberScope.findHashCodeFunctionOrNull()!!
-                        )
-
-                is TypeParameterDescriptor ->
-                    getHashCodeFunction(typeConstructorDescriptor.representativeUpperBound, symbolResolve)
-
-                else ->
-                    throw AssertionError("Unexpected type: $type")
-            }
-
-        override fun generateHashCodeMethod(function: FunctionDescriptor, properties: List<PropertyDescriptor>) {
-            buildMember(function, declaration) {
-                val irIntType = context.irBuiltIns.intType
-                var result: IrExpression? = null
-                for (property in properties) {
-                    val hashCodeOfProperty = getHashCodeOfProperty(property)
-                    result = if (result == null) {
-                        hashCodeOfProperty
-                    } else {
-                        val shiftedResult = irCallOp(intTimes, irIntType, result, irInt(31))
-                        irCallOp(intPlus, irIntType, shiftedResult, hashCodeOfProperty)
-                    }
-                }
-                +irReturn(result ?: irInt(0))
-            }
-        }
-
-        private fun MemberFunctionBuilder.getHashCodeOfProperty(property: PropertyDescriptor): IrExpression {
-            val field = getBackingField(property)
-            val propertyType = property.type
-            return when {
-                propertyType.containsNull() ->
-                    irIfNull(
-                        context.irBuiltIns.intType,
-                        irGetField(irThis(), field),
-                        irInt(0),
-                        getHashCodeOf(
-                            propertyType,
-                            irGetField(irThis(), field)
-                        )
-                    )
-                else ->
-                    getHashCodeOf(
-                        propertyType,
-                        irGetField(irThis(), field)
-                    )
-            }
-        }
-
-        private fun MemberFunctionBuilder.getHashCodeOf(kotlinType: KotlinType, irValue: IrExpression): IrExpression {
-            var substituted: FunctionDescriptor? = null
-            val hashCodeFunctionSymbol = getHashCodeFunction(kotlinType) {
-                substituted = it
-                declarationGenerator.context.symbolTable.referenceSimpleFunction(it.original)
-            }
-
-            return irCall(hashCodeFunctionSymbol, context.irBuiltIns.intType).apply {
-                if (hashCodeFunctionSymbol.descriptor.dispatchReceiverParameter != null) {
-                    dispatchReceiver = irValue
-                } else {
-                    putValueArgument(0, irValue)
-                }
-                commitSubstituted(substituted ?: hashCodeFunctionSymbol.descriptor)
-            }
-        }
-
-        override fun generateToStringMethod(function: FunctionDescriptor, properties: List<PropertyDescriptor>) {
-            buildMember(function, declaration) {
-                val irConcat = irConcat()
-                irConcat.addArgument(irString(classDescriptor.name.asString() + "("))
-                var first = true
-                for (property in properties) {
-                    if (!first) irConcat.addArgument(irString(", "))
-
-                    irConcat.addArgument(irString(property.name.asString() + "="))
-
-                    val irPropertyValue = irGetField(irThis(), getBackingField(property))
-
-                    val typeConstructorDescriptor = property.type.constructor.declarationDescriptor
-                    val irPropertyStringValue =
-                        if (typeConstructorDescriptor is ClassDescriptor &&
-                            KotlinBuiltIns.isArrayOrPrimitiveArray(typeConstructorDescriptor)
-                        )
-                            irCall(context.irBuiltIns.dataClassArrayMemberToStringSymbol, context.irBuiltIns.stringType).apply {
-                                putValueArgument(0, irPropertyValue)
-                            }
-                        else
-                            irPropertyValue
-
-                    irConcat.addArgument(irPropertyStringValue)
-                    first = false
-                }
-                irConcat.addArgument(irString(")"))
-                +irReturn(irConcat)
-            }
-        }
+        override fun generateToStringMethod(function: FunctionDescriptor, properties: List<PropertyDescriptor>) =
+            irDataClassMembersGenerator.generateToStringMethod(function, properties)
     }
 }

compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/EnumClassMembersGenerator.kt

@@ -22,7 +22,7 @@ import org.jetbrains.kotlin.ir.declarations.addMember
 import org.jetbrains.kotlin.ir.expressions.IrSyntheticBodyKind
 import org.jetbrains.kotlin.ir.expressions.impl.IrSyntheticBodyImpl
 import org.jetbrains.kotlin.ir.util.declareSimpleFunctionWithOverrides
-import org.jetbrains.kotlin.psi2ir.findFirstFunction
+import org.jetbrains.kotlin.ir.util.findFirstFunction
 
 class EnumClassMembersGenerator(declarationGenerator: DeclarationGenerator) : DeclarationGeneratorExtension(declarationGenerator) {
     fun generateSpecialMembers(irClass: IrClass) {

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/DataClassMembersGenerator.kt

@@ -0,0 +1,318 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.ir.util
+
+import org.jetbrains.kotlin.builtins.KotlinBuiltIns
+import org.jetbrains.kotlin.descriptors.CallableDescriptor
+import org.jetbrains.kotlin.descriptors.ClassDescriptor
+import org.jetbrains.kotlin.descriptors.FunctionDescriptor
+import org.jetbrains.kotlin.descriptors.PropertyDescriptor
+import org.jetbrains.kotlin.descriptors.TypeParameterDescriptor
+import org.jetbrains.kotlin.incremental.components.NoLookupLocation
+import org.jetbrains.kotlin.ir.UNDEFINED_OFFSET
+import org.jetbrains.kotlin.ir.builders.IrBlockBodyBuilder
+import org.jetbrains.kotlin.ir.builders.IrGeneratorContext
+import org.jetbrains.kotlin.ir.builders.Scope
+import org.jetbrains.kotlin.ir.builders.irAs
+import org.jetbrains.kotlin.ir.builders.irCall
+import org.jetbrains.kotlin.ir.builders.irCallOp
+import org.jetbrains.kotlin.ir.builders.irConcat
+import org.jetbrains.kotlin.ir.builders.irEqeqeq
+import org.jetbrains.kotlin.ir.builders.irGet
+import org.jetbrains.kotlin.ir.builders.irGetField
+import org.jetbrains.kotlin.ir.builders.irIfNull
+import org.jetbrains.kotlin.ir.builders.irIfThenReturnFalse
+import org.jetbrains.kotlin.ir.builders.irIfThenReturnTrue
+import org.jetbrains.kotlin.ir.builders.irInt
+import org.jetbrains.kotlin.ir.builders.irNotEquals
+import org.jetbrains.kotlin.ir.builders.irNotIs
+import org.jetbrains.kotlin.ir.builders.irReturn
+import org.jetbrains.kotlin.ir.builders.irReturnTrue
+import org.jetbrains.kotlin.ir.builders.irString
+import org.jetbrains.kotlin.ir.builders.irTemporary
+import org.jetbrains.kotlin.ir.declarations.IrClass
+import org.jetbrains.kotlin.ir.declarations.IrDeclaration
+import org.jetbrains.kotlin.ir.declarations.IrDeclarationOrigin
+import org.jetbrains.kotlin.ir.declarations.IrField
+import org.jetbrains.kotlin.ir.declarations.IrFunction
+import org.jetbrains.kotlin.ir.expressions.IrExpression
+import org.jetbrains.kotlin.ir.expressions.IrMemberAccessExpression
+import org.jetbrains.kotlin.ir.expressions.impl.IrGetValueImpl
+import org.jetbrains.kotlin.ir.symbols.IrFunctionSymbol
+import org.jetbrains.kotlin.ir.symbols.IrSimpleFunctionSymbol
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.resolve.scopes.MemberScope
+import org.jetbrains.kotlin.types.KotlinType
+import org.jetbrains.kotlin.types.checker.KotlinTypeChecker
+import org.jetbrains.kotlin.types.isNullable
+import org.jetbrains.kotlin.types.typeUtil.representativeUpperBound
+
+abstract class DataClassMembersGenerator(
+    val context: IrGeneratorContext,
+    val symbolTable: SymbolTable,
+    val irClass: IrClass,
+    val origin: IrDeclarationOrigin
+) {
+
+    inline fun <T : IrDeclaration> T.buildWithScope(builder: (T) -> Unit): T =
+        also { irDeclaration ->
+            symbolTable.withScope(irDeclaration.descriptor) {
+                builder(irDeclaration)
+            }
+        }
+
+    private inner class MemberFunctionBuilder(
+        startOffset: Int = UNDEFINED_OFFSET,
+        endOffset: Int = UNDEFINED_OFFSET,
+        val irFunction: IrFunction
+    ) : IrBlockBodyBuilder(context, Scope(irFunction.symbol), startOffset, endOffset) {
+        inline fun addToClass(builder: MemberFunctionBuilder.(IrFunction) -> Unit): IrFunction {
+            irFunction.buildWithScope {
+                builder(irFunction)
+                irFunction.body = doBuild()
+            }
+
+            irClass.declarations.add(irFunction)
+            return irFunction
+        }
+
+        fun irThis(): IrExpression {
+            val irDispatchReceiverParameter = irFunction.dispatchReceiverParameter!!
+            return IrGetValueImpl(
+                startOffset, endOffset,
+                irDispatchReceiverParameter.type,
+                irDispatchReceiverParameter.symbol
+            )
+        }
+
+        fun irOther(): IrExpression {
+            val irFirstParameter = irFunction.valueParameters[0]
+            return IrGetValueImpl(
+                startOffset, endOffset,
+                irFirstParameter.type,
+                irFirstParameter.symbol
+            )
+        }
+
+        fun generateEqualsMethodBody(properties: List<PropertyDescriptor>) {
+            val irType = irClass.defaultType
+
+            if (!irClass.isInline) {
+                +irIfThenReturnTrue(irEqeqeq(irThis(), irOther()))
+            }
+            +irIfThenReturnFalse(irNotIs(irOther(), irType))
+            val otherWithCast = irTemporary(irAs(irOther(), irType), "other_with_cast")
+            for (property in properties) {
+                val field = getBackingField(property)
+                val arg1 = irGetField(irThis(), field)
+                val arg2 = irGetField(irGet(irType, otherWithCast.symbol), field)
+                +irIfThenReturnFalse(irNotEquals(arg1, arg2))
+            }
+            +irReturnTrue()
+        }
+
+        private val intClass = context.builtIns.int
+        private val intType = context.builtIns.intType
+
+        private val intTimesSymbol: IrFunctionSymbol =
+            intClass.findFirstFunction("times") { KotlinTypeChecker.DEFAULT.equalTypes(it.valueParameters[0].type, intType) }
+                .let { symbolTable.referenceFunction(it) }
+
+        private val intPlusSymbol: IrFunctionSymbol =
+            intClass.findFirstFunction("plus") { KotlinTypeChecker.DEFAULT.equalTypes(it.valueParameters[0].type, intType) }
+                .let { symbolTable.referenceFunction(it) }
+
+        fun generateHashCodeMethodBody(properties: List<PropertyDescriptor>) {
+            val irIntType = context.irBuiltIns.intType
+            var result: IrExpression? = null
+            for (property in properties) {
+                val hashCodeOfProperty = getHashCodeOfProperty(property)
+                result = if (result == null) {
+                    hashCodeOfProperty
+                } else {
+                    val shiftedResult = irCallOp(intTimesSymbol, irIntType, result, irInt(31))
+                    irCallOp(intPlusSymbol, irIntType, shiftedResult, hashCodeOfProperty)
+                }
+            }
+            +irReturn(result ?: irInt(0))
+        }
+
+        private fun getHashCodeOfProperty(property: PropertyDescriptor): IrExpression {
+            val field = getBackingField(property)
+            return when {
+                property.type.isNullable() ->
+                    irIfNull(
+                        context.irBuiltIns.intType,
+                        irGetField(irThis(), field),
+                        irInt(0),
+                        getHashCodeOf(property, irGetField(irThis(), field))
+                    )
+                else ->
+                    getHashCodeOf(property, irGetField(irThis(), field))
+            }
+        }
+
+        private fun getHashCodeOf(property: PropertyDescriptor, irValue: IrExpression): IrExpression {
+            var substituted: FunctionDescriptor? = null
+            val hashCodeFunctionSymbol = getHashCodeFunction(property) {
+                substituted = it
+                symbolTable.referenceSimpleFunction(it.original)
+            }
+
+            return irCall(hashCodeFunctionSymbol, context.irBuiltIns.intType).apply {
+                if (hashCodeFunctionSymbol.descriptor.dispatchReceiverParameter != null) {
+                    dispatchReceiver = irValue
+                } else {
+                    putValueArgument(0, irValue)
+                }
+                commitSubstituted(this, substituted ?: hashCodeFunctionSymbol.descriptor)
+            }
+        }
+
+        fun generateToStringMethodBody(properties: List<PropertyDescriptor>) {
+            val irConcat = irConcat()
+            irConcat.addArgument(irString(irClass.descriptor.name.asString() + "("))
+            var first = true
+            for (property in properties) {
+                if (!first) irConcat.addArgument(irString(", "))
+
+                irConcat.addArgument(irString(property.name.asString() + "="))
+
+                val irPropertyValue = irGetField(irThis(), getBackingField(property))
+
+                val typeConstructorDescriptor = property.type.constructor.declarationDescriptor
+                val irPropertyStringValue =
+                    if (typeConstructorDescriptor is ClassDescriptor &&
+                        KotlinBuiltIns.isArrayOrPrimitiveArray(typeConstructorDescriptor)
+                    )
+                        irCall(context.irBuiltIns.dataClassArrayMemberToStringSymbol, context.irBuiltIns.stringType).apply {
+                            putValueArgument(0, irPropertyValue)
+                        }
+                    else
+                        irPropertyValue
+
+                irConcat.addArgument(irPropertyStringValue)
+                first = false
+            }
+            irConcat.addArgument(irString(")"))
+            +irReturn(irConcat)
+        }
+    }
+
+    fun getBackingField(property: PropertyDescriptor): IrField =
+        irClass.properties.single { it.descriptor == property }.backingField!!
+
+    abstract fun declareSimpleFunction(startOffset: Int, endOffset: Int, functionDescriptor: FunctionDescriptor): IrFunction
+
+    abstract fun generateSyntheticFunctionParameterDeclarations(irFunction: IrFunction)
+
+    // Build a member from a descriptor (psi2ir) as well as its body.
+    private inline fun buildMember(
+        function: FunctionDescriptor,
+        startOffset: Int = UNDEFINED_OFFSET,
+        endOffset: Int = UNDEFINED_OFFSET,
+        body: MemberFunctionBuilder.(IrFunction) -> Unit
+    ) {
+        MemberFunctionBuilder(startOffset, endOffset, declareSimpleFunction(startOffset, endOffset, function)).addToClass { irFunction ->
+            irFunction.buildWithScope {
+                generateSyntheticFunctionParameterDeclarations(irFunction)
+                body(irFunction)
+            }
+        }
+    }
+
+    // Use a prebuilt member (fir2ir) and build a member body for it.
+    private inline fun buildMember(
+        irFunction: IrFunction,
+        startOffset: Int = UNDEFINED_OFFSET,
+        endOffset: Int = UNDEFINED_OFFSET,
+        body: MemberFunctionBuilder.(IrFunction) -> Unit
+    ) {
+        MemberFunctionBuilder(startOffset, endOffset, irFunction).addToClass { function ->
+            function.buildWithScope {
+                generateSyntheticFunctionParameterDeclarations(function)
+                body(function)
+            }
+        }
+    }
+
+   // Entry for psi2ir
+    fun generateEqualsMethod(function: FunctionDescriptor, properties: List<PropertyDescriptor>) {
+        buildMember(function, irClass.startOffset, irClass.endOffset) {
+            generateEqualsMethodBody(properties)
+        }
+    }
+
+    // Entry for fir2ir
+    fun generateEqualsMethod(irFunction: IrFunction, properties: List<PropertyDescriptor>) {
+        buildMember(irFunction, irClass.startOffset, irClass.endOffset) {
+            generateEqualsMethodBody(properties)
+        }
+    }
+
+    private fun MemberScope.findHashCodeFunctionOrNull() =
+        getContributedFunctions(Name.identifier("hashCode"), NoLookupLocation.FROM_BACKEND)
+            .find { it.valueParameters.isEmpty() }
+
+    private fun getHashCodeFunction(type: KotlinType): FunctionDescriptor =
+        type.memberScope.findHashCodeFunctionOrNull()
+            ?: context.builtIns.any.unsubstitutedMemberScope.findHashCodeFunctionOrNull()!!
+
+    private fun getHashCodeFunction(
+        type: KotlinType,
+        symbolResolve: (FunctionDescriptor) -> IrSimpleFunctionSymbol
+    ): IrSimpleFunctionSymbol =
+        when (val typeConstructorDescriptor = type.constructor.declarationDescriptor) {
+            is ClassDescriptor ->
+                if (KotlinBuiltIns.isArrayOrPrimitiveArray(typeConstructorDescriptor))
+                    context.irBuiltIns.dataClassArrayMemberHashCodeSymbol
+                else
+                    symbolResolve(getHashCodeFunction(type))
+
+            is TypeParameterDescriptor ->
+                getHashCodeFunction(typeConstructorDescriptor.representativeUpperBound, symbolResolve)
+
+            else ->
+                throw AssertionError("Unexpected type: $type")
+        }
+
+    private fun getHashCodeFunction(
+        property: PropertyDescriptor,
+        symbolResolve: (FunctionDescriptor) -> IrSimpleFunctionSymbol
+    ): IrSimpleFunctionSymbol =
+        getHashCodeFunction(property.type, symbolResolve)
+
+    abstract fun commitSubstituted(irMemberAccessExpression: IrMemberAccessExpression, descriptor: CallableDescriptor)
+
+    // Entry for psi2ir
+    fun generateHashCodeMethod(function: FunctionDescriptor, properties: List<PropertyDescriptor>) {
+        buildMember(function, irClass.startOffset, irClass.endOffset) {
+            generateHashCodeMethodBody(properties)
+        }
+    }
+
+    // Entry for fir2ir
+    fun generateHashCodeMethod(irFunction: IrFunction, properties: List<PropertyDescriptor>) {
+        buildMember(irFunction, irClass.startOffset, irClass.endOffset) {
+            generateHashCodeMethodBody(properties)
+        }
+    }
+
+    // Entry for psi2ir
+    fun generateToStringMethod(function: FunctionDescriptor, properties: List<PropertyDescriptor>) {
+        buildMember(function, irClass.startOffset, irClass.endOffset) {
+            generateToStringMethodBody(properties)
+        }
+    }
+
+    // Entry for fir2ir
+    fun generateToStringMethod(irFunction: IrFunction, properties: List<PropertyDescriptor>) {
+        buildMember(irFunction, irClass.startOffset, irClass.endOffset) {
+            generateToStringMethodBody(properties)
+        }
+    }
+}
+

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/KotlinUtils.kt

@@ -0,0 +1,18 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.ir.util
+
+import org.jetbrains.kotlin.descriptors.CallableMemberDescriptor
+import org.jetbrains.kotlin.descriptors.ClassDescriptor
+import org.jetbrains.kotlin.incremental.components.NoLookupLocation
+import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.resolve.scopes.MemberScope
+
+inline fun ClassDescriptor.findFirstFunction(name: String, predicate: (CallableMemberDescriptor) -> Boolean) =
+    unsubstitutedMemberScope.findFirstFunction(name, predicate)
+
+inline fun MemberScope.findFirstFunction(name: String, predicate: (CallableMemberDescriptor) -> Boolean) =
+    getContributedFunctions(Name.identifier(name), NoLookupLocation.FROM_BACKEND).first(predicate)

compiler/testData/codegen/box/callableReference/property/simpleMutableMember.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class Box(var value: String)
 
 fun box(): String {

compiler/testData/codegen/box/callableReference/property/simpleMutableTopLevel.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class Box(val value: String)
 
 var pr = Box("first")

compiler/testData/codegen/box/callableReference/property/simpleTopLevel.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class Box(val value: String)
 
 val foo = Box("lol")

compiler/testData/codegen/box/callableReference/serializability/boundWithSerializableReceiver.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 // WITH_REFLECT
 

compiler/testData/codegen/box/dataClasses/doubleParam.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // IGNORE_BACKEND: JS_IR
 // TODO: muted automatically, investigate should it be ran for JS or not
 // IGNORE_BACKEND: JS

compiler/testData/codegen/box/dataClasses/equals/alreadyDeclared.kt

@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_FIR: JVM_IR
 data class A(val x: Int) {
   override fun equals(other: Any?): Boolean = false
 }

compiler/testData/codegen/box/dataClasses/equals/genericarray.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A(val v: Array<Int>)
 
 fun box() : String {

compiler/testData/codegen/box/dataClasses/equals/intarray.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A(val v: IntArray)
 
 fun box() : String {

compiler/testData/codegen/box/dataClasses/floatParam.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // IGNORE_BACKEND: JS_IR
 // TODO: muted automatically, investigate should it be ran for JS or not
 // IGNORE_BACKEND: JS

compiler/testData/codegen/box/dataClasses/hashCode/alreadyDeclared.kt

@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_FIR: JVM_IR
 data class A(val x: Int) {
   override fun hashCode(): Int = -3
 }

compiler/testData/codegen/box/dataClasses/hashCode/alreadyDeclaredWrongSignature.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 // WITH_RUNTIME

compiler/testData/codegen/box/dataClasses/hashCode/boolean.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A(val a: Boolean)
 
 fun box() : String {

compiler/testData/codegen/box/dataClasses/hashCode/byte.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A(val a: Byte)
 
 fun box() : String {

compiler/testData/codegen/box/dataClasses/hashCode/char.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A(val a: Char)
 
 fun box() : String {

compiler/testData/codegen/box/dataClasses/hashCode/double.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A(val a: Double)
 
 fun box() : String {

compiler/testData/codegen/box/dataClasses/hashCode/float.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A(val a: Float)
 
 fun box() : String {

compiler/testData/codegen/box/dataClasses/hashCode/genericNull.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A<T>(val t: T)
 
 fun box(): String {

compiler/testData/codegen/box/dataClasses/hashCode/int.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A(val a: Int)
 
 fun box() : String {

compiler/testData/codegen/box/dataClasses/hashCode/long.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A(val a: Long)
 
 fun box() : String {

compiler/testData/codegen/box/dataClasses/hashCode/short.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A(val a: Short)
 
 fun box() : String {

compiler/testData/codegen/box/dataClasses/kt5002.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 import java.io.Serializable

compiler/testData/codegen/box/dataClasses/nonTrivialFinalMemberInSuperClass.kt

@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_FIR: JVM_IR
 abstract class Base {
     final override fun toString() = "OK"
     final override fun hashCode() = 42

compiler/testData/codegen/box/dataClasses/nonTrivialMemberInSuperClass.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // See KT-6206 Always generate hashCode() and equals() for data classes even if base classes have non-trivial analogs
 
 abstract class Base {

compiler/testData/codegen/box/dataClasses/privateValParams.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class D(private val x: Long, private val y: Char) {
     fun foo() = "${component1()}${component2()}"
 }

compiler/testData/codegen/box/dataClasses/toString/alreadyDeclared.kt

@@ -1,3 +1,4 @@
+// IGNORE_BACKEND_FIR: JVM_IR
 data class A(val x: Int) {
   override fun toString(): String = "!"
 }

compiler/testData/codegen/box/dataClasses/toString/alreadyDeclaredWrongSignature.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 // WITH_RUNTIME

compiler/testData/codegen/box/dataClasses/toString/arrayParams.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // IGNORE_BACKEND: JS_IR
 // TODO: muted automatically, investigate should it be ran for JS or not
 // IGNORE_BACKEND: JS

compiler/testData/codegen/box/dataClasses/toString/changingVarParam.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A(var string: String)
 
 fun box(): String {

compiler/testData/codegen/box/dataClasses/toString/genericParam.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A<T>(val x: T)
 
 fun box(): String {

compiler/testData/codegen/box/dataClasses/toString/mixedParams.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A(var x: Int, val z: Int?)
 
 fun box(): String {

compiler/testData/codegen/box/dataClasses/toString/unitComponent.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class A(val x: Unit)
 
 fun box(): String {

compiler/testData/codegen/box/dataClasses/typeParameterWithNonTrivialBound.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 // WITH_RUNTIME
 

compiler/testData/codegen/box/ieee754/dataClass.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 data class Test(val z1: Double, val z2: Double?)
 
 fun box(): String {

compiler/testData/codegen/box/javaInterop/objectMethods/cloneCallsConstructor.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // IGNORE_BACKEND: JS_IR
 // TODO: muted automatically, investigate should it be ran for JS or not
 // IGNORE_BACKEND: JS, NATIVE

compiler/testData/codegen/box/javaInterop/objectMethods/cloneCallsSuper.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // IGNORE_BACKEND: JS_IR
 // TODO: muted automatically, investigate should it be ran for JS or not
 // IGNORE_BACKEND: JS, NATIVE

compiler/testData/codegen/box/javaInterop/objectMethods/cloneableClassWithoutClone.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // IGNORE_BACKEND: JS_IR
 // TODO: muted automatically, investigate should it be ran for JS or not
 // IGNORE_BACKEND: JS, NATIVE

compiler/testData/codegen/box/operatorConventions/augmentedAssignmentWithArrayLHS.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 var log = ""
 
 fun foo(): Int {

compiler/testData/codegen/box/regressions/kt32949.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 class Binder() {
     lateinit var bindee: Container<*>
 

compiler/testData/ir/irText/classes/dataClassWithArrayMembers.fir.txt

@@ -206,19 +206,224 @@ FILE fqName:<root> fileName:/dataClassWithArrayMembers.kt
           CALL 'public final fun <get-doubleArray> (): kotlin.DoubleArray declared in <root>.Test1' type=kotlin.DoubleArray origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.copy' type=<root>.Test1 origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.Test1, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test1
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.Test1.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.Test1
+              GET_VAR 'other: kotlin.Any? declared in <root>.Test1.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:<root>.Test1 [val]
+          TYPE_OP type=<root>.Test1 origin=CAST typeOperand=<root>.Test1
+            GET_VAR 'other: kotlin.Any? declared in <root>.Test1.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:stringArray type:kotlin.Array<kotlin.String> visibility:private [final]' type=kotlin.Array<kotlin.String> origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:stringArray type:kotlin.Array<kotlin.String> visibility:private [final]' type=kotlin.Array<kotlin.String> origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test1 [val] declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:charArray type:kotlin.CharArray visibility:private [final]' type=kotlin.CharArray origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:charArray type:kotlin.CharArray visibility:private [final]' type=kotlin.CharArray origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test1 [val] declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:booleanArray type:kotlin.BooleanArray visibility:private [final]' type=kotlin.BooleanArray origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:booleanArray type:kotlin.BooleanArray visibility:private [final]' type=kotlin.BooleanArray origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test1 [val] declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:byteArray type:kotlin.ByteArray visibility:private [final]' type=kotlin.ByteArray origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:byteArray type:kotlin.ByteArray visibility:private [final]' type=kotlin.ByteArray origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test1 [val] declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:shortArray type:kotlin.ShortArray visibility:private [final]' type=kotlin.ShortArray origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:shortArray type:kotlin.ShortArray visibility:private [final]' type=kotlin.ShortArray origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test1 [val] declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:intArray type:kotlin.IntArray visibility:private [final]' type=kotlin.IntArray origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:intArray type:kotlin.IntArray visibility:private [final]' type=kotlin.IntArray origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test1 [val] declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:longArray type:kotlin.LongArray visibility:private [final]' type=kotlin.LongArray origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:longArray type:kotlin.LongArray visibility:private [final]' type=kotlin.LongArray origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test1 [val] declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:floatArray type:kotlin.FloatArray visibility:private [final]' type=kotlin.FloatArray origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:floatArray type:kotlin.FloatArray visibility:private [final]' type=kotlin.FloatArray origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test1 [val] declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:doubleArray type:kotlin.DoubleArray visibility:private [final]' type=kotlin.DoubleArray origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:doubleArray type:kotlin.DoubleArray visibility:private [final]' type=kotlin.DoubleArray origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test1 [val] declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.Test1) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test1
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.Test1'
+          CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+            $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+              $this: CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                  $this: CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                    $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                      $this: CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                        $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                          $this: CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                            $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                              $this: CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                                $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                                  $this: CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                                    $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                                      $this: CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                                        $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                                          $this: CALL 'public final fun dataClassArrayMemberHashCode (arg0: kotlin.Any): kotlin.Int declared in kotlin.internal.ir' type=kotlin.Int origin=null
+                                            arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:stringArray type:kotlin.Array<kotlin.String> visibility:private [final]' type=kotlin.Array<kotlin.String> origin=null
+                                              receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.hashCode' type=<root>.Test1 origin=null
+                                          other: CONST Int type=kotlin.Int value=31
+                                        other: CALL 'public final fun dataClassArrayMemberHashCode (arg0: kotlin.Any): kotlin.Int declared in kotlin.internal.ir' type=kotlin.Int origin=null
+                                          arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:charArray type:kotlin.CharArray visibility:private [final]' type=kotlin.CharArray origin=null
+                                            receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.hashCode' type=<root>.Test1 origin=null
+                                      other: CONST Int type=kotlin.Int value=31
+                                    other: CALL 'public final fun dataClassArrayMemberHashCode (arg0: kotlin.Any): kotlin.Int declared in kotlin.internal.ir' type=kotlin.Int origin=null
+                                      arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:booleanArray type:kotlin.BooleanArray visibility:private [final]' type=kotlin.BooleanArray origin=null
+                                        receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.hashCode' type=<root>.Test1 origin=null
+                                  other: CONST Int type=kotlin.Int value=31
+                                other: CALL 'public final fun dataClassArrayMemberHashCode (arg0: kotlin.Any): kotlin.Int declared in kotlin.internal.ir' type=kotlin.Int origin=null
+                                  arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:byteArray type:kotlin.ByteArray visibility:private [final]' type=kotlin.ByteArray origin=null
+                                    receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.hashCode' type=<root>.Test1 origin=null
+                              other: CONST Int type=kotlin.Int value=31
+                            other: CALL 'public final fun dataClassArrayMemberHashCode (arg0: kotlin.Any): kotlin.Int declared in kotlin.internal.ir' type=kotlin.Int origin=null
+                              arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:shortArray type:kotlin.ShortArray visibility:private [final]' type=kotlin.ShortArray origin=null
+                                receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.hashCode' type=<root>.Test1 origin=null
+                          other: CONST Int type=kotlin.Int value=31
+                        other: CALL 'public final fun dataClassArrayMemberHashCode (arg0: kotlin.Any): kotlin.Int declared in kotlin.internal.ir' type=kotlin.Int origin=null
+                          arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:intArray type:kotlin.IntArray visibility:private [final]' type=kotlin.IntArray origin=null
+                            receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.hashCode' type=<root>.Test1 origin=null
+                      other: CONST Int type=kotlin.Int value=31
+                    other: CALL 'public final fun dataClassArrayMemberHashCode (arg0: kotlin.Any): kotlin.Int declared in kotlin.internal.ir' type=kotlin.Int origin=null
+                      arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:longArray type:kotlin.LongArray visibility:private [final]' type=kotlin.LongArray origin=null
+                        receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.hashCode' type=<root>.Test1 origin=null
+                  other: CONST Int type=kotlin.Int value=31
+                other: CALL 'public final fun dataClassArrayMemberHashCode (arg0: kotlin.Any): kotlin.Int declared in kotlin.internal.ir' type=kotlin.Int origin=null
+                  arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:floatArray type:kotlin.FloatArray visibility:private [final]' type=kotlin.FloatArray origin=null
+                    receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.hashCode' type=<root>.Test1 origin=null
+              other: CONST Int type=kotlin.Int value=31
+            other: CALL 'public final fun dataClassArrayMemberHashCode (arg0: kotlin.Any): kotlin.Int declared in kotlin.internal.ir' type=kotlin.Int origin=null
+              arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:doubleArray type:kotlin.DoubleArray visibility:private [final]' type=kotlin.DoubleArray origin=null
+                receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.hashCode' type=<root>.Test1 origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.Test1) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test1
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.Test1'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="Test1("
+            CONST String type=kotlin.String value="stringArray="
+            CALL 'public final fun dataClassArrayMemberToString (arg0: kotlin.Any?): kotlin.String declared in kotlin.internal.ir' type=kotlin.String origin=null
+              arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:stringArray type:kotlin.Array<kotlin.String> visibility:private [final]' type=kotlin.Array<kotlin.String> origin=null
+                receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.toString' type=<root>.Test1 origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="charArray="
+            CALL 'public final fun dataClassArrayMemberToString (arg0: kotlin.Any?): kotlin.String declared in kotlin.internal.ir' type=kotlin.String origin=null
+              arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:charArray type:kotlin.CharArray visibility:private [final]' type=kotlin.CharArray origin=null
+                receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.toString' type=<root>.Test1 origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="booleanArray="
+            CALL 'public final fun dataClassArrayMemberToString (arg0: kotlin.Any?): kotlin.String declared in kotlin.internal.ir' type=kotlin.String origin=null
+              arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:booleanArray type:kotlin.BooleanArray visibility:private [final]' type=kotlin.BooleanArray origin=null
+                receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.toString' type=<root>.Test1 origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="byteArray="
+            CALL 'public final fun dataClassArrayMemberToString (arg0: kotlin.Any?): kotlin.String declared in kotlin.internal.ir' type=kotlin.String origin=null
+              arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:byteArray type:kotlin.ByteArray visibility:private [final]' type=kotlin.ByteArray origin=null
+                receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.toString' type=<root>.Test1 origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="shortArray="
+            CALL 'public final fun dataClassArrayMemberToString (arg0: kotlin.Any?): kotlin.String declared in kotlin.internal.ir' type=kotlin.String origin=null
+              arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:shortArray type:kotlin.ShortArray visibility:private [final]' type=kotlin.ShortArray origin=null
+                receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.toString' type=<root>.Test1 origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="intArray="
+            CALL 'public final fun dataClassArrayMemberToString (arg0: kotlin.Any?): kotlin.String declared in kotlin.internal.ir' type=kotlin.String origin=null
+              arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:intArray type:kotlin.IntArray visibility:private [final]' type=kotlin.IntArray origin=null
+                receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.toString' type=<root>.Test1 origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="longArray="
+            CALL 'public final fun dataClassArrayMemberToString (arg0: kotlin.Any?): kotlin.String declared in kotlin.internal.ir' type=kotlin.String origin=null
+              arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:longArray type:kotlin.LongArray visibility:private [final]' type=kotlin.LongArray origin=null
+                receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.toString' type=<root>.Test1 origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="floatArray="
+            CALL 'public final fun dataClassArrayMemberToString (arg0: kotlin.Any?): kotlin.String declared in kotlin.internal.ir' type=kotlin.String origin=null
+              arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:floatArray type:kotlin.FloatArray visibility:private [final]' type=kotlin.FloatArray origin=null
+                receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.toString' type=<root>.Test1 origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="doubleArray="
+            CALL 'public final fun dataClassArrayMemberToString (arg0: kotlin.Any?): kotlin.String declared in kotlin.internal.ir' type=kotlin.String origin=null
+              arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:doubleArray type:kotlin.DoubleArray visibility:private [final]' type=kotlin.DoubleArray origin=null
+                receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.toString' type=<root>.Test1 origin=null
+            CONST String type=kotlin.String value=")"
   CLASS CLASS name:Test2 modality:FINAL visibility:public [data] superTypes:[kotlin.Any]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Test2<T of <root>.Test2>
     TYPE_PARAMETER name:T index:0 variance: superTypes:[kotlin.Any?]
@@ -251,19 +456,56 @@ FILE fqName:<root> fileName:/dataClassWithArrayMembers.kt
           CALL 'public final fun <get-genericArray> (): kotlin.Array<T of <root>.Test2> declared in <root>.Test2' type=kotlin.Array<T of <root>.Test2> origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.Test2<T of <root>.Test2> declared in <root>.Test2.copy' type=<root>.Test2<T of <root>.Test2> origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.Test2<T of <root>.Test2>, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test2<T of <root>.Test2>
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.Test2<T of <root>.Test2> declared in <root>.Test2.equals' type=<root>.Test2<T of <root>.Test2> origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.Test2.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test2'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.Test2<T of <root>.Test2>
+              GET_VAR 'other: kotlin.Any? declared in <root>.Test2.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test2'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_1 type:<root>.Test2<T of <root>.Test2> [val]
+          TYPE_OP type=<root>.Test2<T of <root>.Test2> origin=CAST typeOperand=<root>.Test2<T of <root>.Test2>
+            GET_VAR 'other: kotlin.Any? declared in <root>.Test2.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:genericArray type:kotlin.Array<T of <root>.Test2> visibility:private [final]' type=kotlin.Array<T of <root>.Test2> origin=null
+                  receiver: GET_VAR '<this>: <root>.Test2<T of <root>.Test2> declared in <root>.Test2.equals' type=<root>.Test2<T of <root>.Test2> origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:genericArray type:kotlin.Array<T of <root>.Test2> visibility:private [final]' type=kotlin.Array<T of <root>.Test2> origin=null
+                  receiver: GET_VAR 'val tmp_1: <root>.Test2<T of <root>.Test2> [val] declared in <root>.Test2.equals' type=<root>.Test2<T of <root>.Test2> origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test2'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test2'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.Test2<T of <root>.Test2>) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test2<T of <root>.Test2>
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.Test2'
+          CALL 'public final fun dataClassArrayMemberHashCode (arg0: kotlin.Any): kotlin.Int declared in kotlin.internal.ir' type=kotlin.Int origin=null
+            arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:genericArray type:kotlin.Array<T of <root>.Test2> visibility:private [final]' type=kotlin.Array<T of <root>.Test2> origin=null
+              receiver: GET_VAR '<this>: <root>.Test2<T of <root>.Test2> declared in <root>.Test2.hashCode' type=<root>.Test2<T of <root>.Test2> origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.Test2<T of <root>.Test2>) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test2<T of <root>.Test2>
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.Test2'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="Test2("
+            CONST String type=kotlin.String value="genericArray="
+            CALL 'public final fun dataClassArrayMemberToString (arg0: kotlin.Any?): kotlin.String declared in kotlin.internal.ir' type=kotlin.String origin=null
+              arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:genericArray type:kotlin.Array<T of <root>.Test2> visibility:private [final]' type=kotlin.Array<T of <root>.Test2> origin=null
+                receiver: GET_VAR '<this>: <root>.Test2<T of <root>.Test2> declared in <root>.Test2.toString' type=<root>.Test2<T of <root>.Test2> origin=null
+            CONST String type=kotlin.String value=")"
   CLASS CLASS name:Test3 modality:FINAL visibility:public [data] superTypes:[kotlin.Any]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Test3
     CONSTRUCTOR visibility:public <> (anyArrayN:kotlin.Array<kotlin.Any>?) returnType:<root>.Test3 [primary]
@@ -295,16 +537,62 @@ FILE fqName:<root> fileName:/dataClassWithArrayMembers.kt
           CALL 'public final fun <get-anyArrayN> (): kotlin.Array<kotlin.Any>? declared in <root>.Test3' type=kotlin.Array<kotlin.Any>? origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.copy' type=<root>.Test3 origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.Test3, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test3
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.equals' type=<root>.Test3 origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.Test3.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.Test3
+              GET_VAR 'other: kotlin.Any? declared in <root>.Test3.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_2 type:<root>.Test3 [val]
+          TYPE_OP type=<root>.Test3 origin=CAST typeOperand=<root>.Test3
+            GET_VAR 'other: kotlin.Any? declared in <root>.Test3.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:anyArrayN type:kotlin.Array<kotlin.Any>? visibility:private [final]' type=kotlin.Array<kotlin.Any>? origin=null
+                  receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.equals' type=<root>.Test3 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:anyArrayN type:kotlin.Array<kotlin.Any>? visibility:private [final]' type=kotlin.Array<kotlin.Any>? origin=null
+                  receiver: GET_VAR 'val tmp_2: <root>.Test3 [val] declared in <root>.Test3.equals' type=<root>.Test3 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.Test3) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test3
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.Test3'
+          WHEN type=kotlin.Int origin=null
+            BRANCH
+              if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:anyArrayN type:kotlin.Array<kotlin.Any>? visibility:private [final]' type=kotlin.Array<kotlin.Any>? origin=null
+                  receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.hashCode' type=<root>.Test3 origin=null
+                arg1: CONST Null type=kotlin.Nothing? value=null
+              then: CONST Int type=kotlin.Int value=0
+            BRANCH
+              if: CONST Boolean type=kotlin.Boolean value=true
+              then: CALL 'public final fun dataClassArrayMemberHashCode (arg0: kotlin.Any): kotlin.Int declared in kotlin.internal.ir' type=kotlin.Int origin=null
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:anyArrayN type:kotlin.Array<kotlin.Any>? visibility:private [final]' type=kotlin.Array<kotlin.Any>? origin=null
+                  receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.hashCode' type=<root>.Test3 origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.Test3) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test3
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.Test3'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="Test3("
+            CONST String type=kotlin.String value="anyArrayN="
+            CALL 'public final fun dataClassArrayMemberToString (arg0: kotlin.Any?): kotlin.String declared in kotlin.internal.ir' type=kotlin.String origin=null
+              arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:anyArrayN type:kotlin.Array<kotlin.Any>? visibility:private [final]' type=kotlin.Array<kotlin.Any>? origin=null
+                receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.toString' type=<root>.Test3 origin=null
+            CONST String type=kotlin.String value=")"

compiler/testData/ir/irText/classes/dataClasses.fir.txt

@@ -74,19 +74,95 @@ FILE fqName:<root> fileName:/dataClasses.kt
           CALL 'public final fun <get-z> (): kotlin.Any declared in <root>.Test1' type=kotlin.Any origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.copy' type=<root>.Test1 origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.Test1, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test1
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.Test1.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.Test1
+              GET_VAR 'other: kotlin.Any? declared in <root>.Test1.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:<root>.Test1 [val]
+          TYPE_OP type=<root>.Test1 origin=CAST typeOperand=<root>.Test1
+            GET_VAR 'other: kotlin.Any? declared in <root>.Test1.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test1 [val] declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test1 [val] declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:z type:kotlin.Any visibility:private [final]' type=kotlin.Any origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:z type:kotlin.Any visibility:private [final]' type=kotlin.Any origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test1 [val] declared in <root>.Test1.equals' type=<root>.Test1 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.Test1) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test1
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.Test1'
+          CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+            $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+              $this: CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                  $this: CALL 'public open fun hashCode (): kotlin.Int [fake_override] declared in kotlin.Int' type=kotlin.Int origin=null
+                    $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                      receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.hashCode' type=<root>.Test1 origin=null
+                  other: CONST Int type=kotlin.Int value=31
+                other: CALL 'public open fun hashCode (): kotlin.Int [fake_override] declared in kotlin.String' type=kotlin.Int origin=null
+                  $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                    receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.hashCode' type=<root>.Test1 origin=null
+              other: CONST Int type=kotlin.Int value=31
+            other: CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
+              $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:z type:kotlin.Any visibility:private [final]' type=kotlin.Any origin=null
+                receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.hashCode' type=<root>.Test1 origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.Test1) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test1
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.Test1'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="Test1("
+            CONST String type=kotlin.String value="x="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+              receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.toString' type=<root>.Test1 origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="y="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.toString' type=<root>.Test1 origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="z="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:z type:kotlin.Any visibility:private [final]' type=kotlin.Any origin=null
+              receiver: GET_VAR '<this>: <root>.Test1 declared in <root>.Test1.toString' type=<root>.Test1 origin=null
+            CONST String type=kotlin.String value=")"
   CLASS CLASS name:Test2 modality:FINAL visibility:public [data] superTypes:[kotlin.Any]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Test2
     CONSTRUCTOR visibility:public <> (x:kotlin.Any?) returnType:<root>.Test2 [primary]
@@ -118,19 +194,64 @@ FILE fqName:<root> fileName:/dataClasses.kt
           CALL 'public final fun <get-x> (): kotlin.Any? declared in <root>.Test2' type=kotlin.Any? origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.Test2 declared in <root>.Test2.copy' type=<root>.Test2 origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.Test2, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test2
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.Test2 declared in <root>.Test2.equals' type=<root>.Test2 origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.Test2.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test2'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.Test2
+              GET_VAR 'other: kotlin.Any? declared in <root>.Test2.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test2'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_1 type:<root>.Test2 [val]
+          TYPE_OP type=<root>.Test2 origin=CAST typeOperand=<root>.Test2
+            GET_VAR 'other: kotlin.Any? declared in <root>.Test2.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Any? visibility:private [final]' type=kotlin.Any? origin=null
+                  receiver: GET_VAR '<this>: <root>.Test2 declared in <root>.Test2.equals' type=<root>.Test2 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Any? visibility:private [final]' type=kotlin.Any? origin=null
+                  receiver: GET_VAR 'val tmp_1: <root>.Test2 [val] declared in <root>.Test2.equals' type=<root>.Test2 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test2'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test2'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.Test2) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test2
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.Test2'
+          WHEN type=kotlin.Int origin=null
+            BRANCH
+              if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Any? visibility:private [final]' type=kotlin.Any? origin=null
+                  receiver: GET_VAR '<this>: <root>.Test2 declared in <root>.Test2.hashCode' type=<root>.Test2 origin=null
+                arg1: CONST Null type=kotlin.Nothing? value=null
+              then: CONST Int type=kotlin.Int value=0
+            BRANCH
+              if: CONST Boolean type=kotlin.Boolean value=true
+              then: CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
+                $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Any? visibility:private [final]' type=kotlin.Any? origin=null
+                  receiver: GET_VAR '<this>: <root>.Test2 declared in <root>.Test2.hashCode' type=<root>.Test2 origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.Test2) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test2
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.Test2'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="Test2("
+            CONST String type=kotlin.String value="x="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Any? visibility:private [final]' type=kotlin.Any? origin=null
+              receiver: GET_VAR '<this>: <root>.Test2 declared in <root>.Test2.toString' type=<root>.Test2 origin=null
+            CONST String type=kotlin.String value=")"
   CLASS CLASS name:Test3 modality:FINAL visibility:public [data] superTypes:[kotlin.Any]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Test3
     CONSTRUCTOR visibility:public <> (d:kotlin.Double, dn:kotlin.Double?, f:kotlin.Float, df:kotlin.Float?) returnType:<root>.Test3 [primary]
@@ -228,16 +349,130 @@ FILE fqName:<root> fileName:/dataClasses.kt
           CALL 'public final fun <get-df> (): kotlin.Float? declared in <root>.Test3' type=kotlin.Float? origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.copy' type=<root>.Test3 origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.Test3, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test3
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.equals' type=<root>.Test3 origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.Test3.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.Test3
+              GET_VAR 'other: kotlin.Any? declared in <root>.Test3.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_2 type:<root>.Test3 [val]
+          TYPE_OP type=<root>.Test3 origin=CAST typeOperand=<root>.Test3
+            GET_VAR 'other: kotlin.Any? declared in <root>.Test3.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:d type:kotlin.Double visibility:private [final]' type=kotlin.Double origin=null
+                  receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.equals' type=<root>.Test3 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:d type:kotlin.Double visibility:private [final]' type=kotlin.Double origin=null
+                  receiver: GET_VAR 'val tmp_2: <root>.Test3 [val] declared in <root>.Test3.equals' type=<root>.Test3 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:dn type:kotlin.Double? visibility:private [final]' type=kotlin.Double? origin=null
+                  receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.equals' type=<root>.Test3 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:dn type:kotlin.Double? visibility:private [final]' type=kotlin.Double? origin=null
+                  receiver: GET_VAR 'val tmp_2: <root>.Test3 [val] declared in <root>.Test3.equals' type=<root>.Test3 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:f type:kotlin.Float visibility:private [final]' type=kotlin.Float origin=null
+                  receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.equals' type=<root>.Test3 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:f type:kotlin.Float visibility:private [final]' type=kotlin.Float origin=null
+                  receiver: GET_VAR 'val tmp_2: <root>.Test3 [val] declared in <root>.Test3.equals' type=<root>.Test3 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:df type:kotlin.Float? visibility:private [final]' type=kotlin.Float? origin=null
+                  receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.equals' type=<root>.Test3 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:df type:kotlin.Float? visibility:private [final]' type=kotlin.Float? origin=null
+                  receiver: GET_VAR 'val tmp_2: <root>.Test3 [val] declared in <root>.Test3.equals' type=<root>.Test3 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.Test3) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test3
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.Test3'
+          CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+            $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+              $this: CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                  $this: CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                    $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+                      $this: CALL 'public open fun hashCode (): kotlin.Int [fake_override] declared in kotlin.Double' type=kotlin.Int origin=null
+                        $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:d type:kotlin.Double visibility:private [final]' type=kotlin.Double origin=null
+                          receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.hashCode' type=<root>.Test3 origin=null
+                      other: CONST Int type=kotlin.Int value=31
+                    other: WHEN type=kotlin.Int origin=null
+                      BRANCH
+                        if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
+                          arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:dn type:kotlin.Double? visibility:private [final]' type=kotlin.Double? origin=null
+                            receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.hashCode' type=<root>.Test3 origin=null
+                          arg1: CONST Null type=kotlin.Nothing? value=null
+                        then: CONST Int type=kotlin.Int value=0
+                      BRANCH
+                        if: CONST Boolean type=kotlin.Boolean value=true
+                        then: CALL 'public open fun hashCode (): kotlin.Int [fake_override] declared in kotlin.Double' type=kotlin.Int origin=null
+                          $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:dn type:kotlin.Double? visibility:private [final]' type=kotlin.Double? origin=null
+                            receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.hashCode' type=<root>.Test3 origin=null
+                  other: CONST Int type=kotlin.Int value=31
+                other: CALL 'public open fun hashCode (): kotlin.Int [fake_override] declared in kotlin.Float' type=kotlin.Int origin=null
+                  $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:f type:kotlin.Float visibility:private [final]' type=kotlin.Float origin=null
+                    receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.hashCode' type=<root>.Test3 origin=null
+              other: CONST Int type=kotlin.Int value=31
+            other: WHEN type=kotlin.Int origin=null
+              BRANCH
+                if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
+                  arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:df type:kotlin.Float? visibility:private [final]' type=kotlin.Float? origin=null
+                    receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.hashCode' type=<root>.Test3 origin=null
+                  arg1: CONST Null type=kotlin.Nothing? value=null
+                then: CONST Int type=kotlin.Int value=0
+              BRANCH
+                if: CONST Boolean type=kotlin.Boolean value=true
+                then: CALL 'public open fun hashCode (): kotlin.Int [fake_override] declared in kotlin.Float' type=kotlin.Int origin=null
+                  $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:df type:kotlin.Float? visibility:private [final]' type=kotlin.Float? origin=null
+                    receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.hashCode' type=<root>.Test3 origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.Test3) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test3
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.Test3'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="Test3("
+            CONST String type=kotlin.String value="d="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:d type:kotlin.Double visibility:private [final]' type=kotlin.Double origin=null
+              receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.toString' type=<root>.Test3 origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="dn="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:dn type:kotlin.Double? visibility:private [final]' type=kotlin.Double? origin=null
+              receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.toString' type=<root>.Test3 origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="f="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:f type:kotlin.Float visibility:private [final]' type=kotlin.Float origin=null
+              receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.toString' type=<root>.Test3 origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="df="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:df type:kotlin.Float? visibility:private [final]' type=kotlin.Float? origin=null
+              receiver: GET_VAR '<this>: <root>.Test3 declared in <root>.Test3.toString' type=<root>.Test3 origin=null
+            CONST String type=kotlin.String value=")"

compiler/testData/ir/irText/classes/dataClassesGeneric.fir.txt

@@ -31,19 +31,64 @@ FILE fqName:<root> fileName:/dataClassesGeneric.kt
           CALL 'public final fun <get-x> (): T of <root>.Test1 declared in <root>.Test1' type=T of <root>.Test1 origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.Test1<T of <root>.Test1> declared in <root>.Test1.copy' type=<root>.Test1<T of <root>.Test1> origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.Test1<T of <root>.Test1>, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test1<T of <root>.Test1>
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.Test1<T of <root>.Test1> declared in <root>.Test1.equals' type=<root>.Test1<T of <root>.Test1> origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.Test1.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.Test1<T of <root>.Test1>
+              GET_VAR 'other: kotlin.Any? declared in <root>.Test1.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:<root>.Test1<T of <root>.Test1> [val]
+          TYPE_OP type=<root>.Test1<T of <root>.Test1> origin=CAST typeOperand=<root>.Test1<T of <root>.Test1>
+            GET_VAR 'other: kotlin.Any? declared in <root>.Test1.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:T of <root>.Test1 visibility:private [final]' type=T of <root>.Test1 origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1<T of <root>.Test1> declared in <root>.Test1.equals' type=<root>.Test1<T of <root>.Test1> origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:T of <root>.Test1 visibility:private [final]' type=T of <root>.Test1 origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test1<T of <root>.Test1> [val] declared in <root>.Test1.equals' type=<root>.Test1<T of <root>.Test1> origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test1'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.Test1<T of <root>.Test1>) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test1<T of <root>.Test1>
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.Test1'
+          WHEN type=kotlin.Int origin=null
+            BRANCH
+              if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:T of <root>.Test1 visibility:private [final]' type=T of <root>.Test1 origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1<T of <root>.Test1> declared in <root>.Test1.hashCode' type=<root>.Test1<T of <root>.Test1> origin=null
+                arg1: CONST Null type=kotlin.Nothing? value=null
+              then: CONST Int type=kotlin.Int value=0
+            BRANCH
+              if: CONST Boolean type=kotlin.Boolean value=true
+              then: CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
+                $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:T of <root>.Test1 visibility:private [final]' type=T of <root>.Test1 origin=null
+                  receiver: GET_VAR '<this>: <root>.Test1<T of <root>.Test1> declared in <root>.Test1.hashCode' type=<root>.Test1<T of <root>.Test1> origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.Test1<T of <root>.Test1>) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test1<T of <root>.Test1>
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.Test1'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="Test1("
+            CONST String type=kotlin.String value="x="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:T of <root>.Test1 visibility:private [final]' type=T of <root>.Test1 origin=null
+              receiver: GET_VAR '<this>: <root>.Test1<T of <root>.Test1> declared in <root>.Test1.toString' type=<root>.Test1<T of <root>.Test1> origin=null
+            CONST String type=kotlin.String value=")"
   CLASS CLASS name:Test2 modality:FINAL visibility:public [data] superTypes:[kotlin.Any]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Test2<T of <root>.Test2>
     TYPE_PARAMETER name:T index:0 variance: superTypes:[kotlin.Number]
@@ -76,19 +121,55 @@ FILE fqName:<root> fileName:/dataClassesGeneric.kt
           CALL 'public final fun <get-x> (): T of <root>.Test2 declared in <root>.Test2' type=T of <root>.Test2 origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.Test2<T of <root>.Test2> declared in <root>.Test2.copy' type=<root>.Test2<T of <root>.Test2> origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.Test2<T of <root>.Test2>, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test2<T of <root>.Test2>
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.Test2<T of <root>.Test2> declared in <root>.Test2.equals' type=<root>.Test2<T of <root>.Test2> origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.Test2.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test2'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.Test2<T of <root>.Test2>
+              GET_VAR 'other: kotlin.Any? declared in <root>.Test2.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test2'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_1 type:<root>.Test2<T of <root>.Test2> [val]
+          TYPE_OP type=<root>.Test2<T of <root>.Test2> origin=CAST typeOperand=<root>.Test2<T of <root>.Test2>
+            GET_VAR 'other: kotlin.Any? declared in <root>.Test2.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:T of <root>.Test2 visibility:private [final]' type=T of <root>.Test2 origin=null
+                  receiver: GET_VAR '<this>: <root>.Test2<T of <root>.Test2> declared in <root>.Test2.equals' type=<root>.Test2<T of <root>.Test2> origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:T of <root>.Test2 visibility:private [final]' type=T of <root>.Test2 origin=null
+                  receiver: GET_VAR 'val tmp_1: <root>.Test2<T of <root>.Test2> [val] declared in <root>.Test2.equals' type=<root>.Test2<T of <root>.Test2> origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test2'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test2'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.Test2<T of <root>.Test2>) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test2<T of <root>.Test2>
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.Test2'
+          CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
+            $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:T of <root>.Test2 visibility:private [final]' type=T of <root>.Test2 origin=null
+              receiver: GET_VAR '<this>: <root>.Test2<T of <root>.Test2> declared in <root>.Test2.hashCode' type=<root>.Test2<T of <root>.Test2> origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.Test2<T of <root>.Test2>) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test2<T of <root>.Test2>
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.Test2'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="Test2("
+            CONST String type=kotlin.String value="x="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:T of <root>.Test2 visibility:private [final]' type=T of <root>.Test2 origin=null
+              receiver: GET_VAR '<this>: <root>.Test2<T of <root>.Test2> declared in <root>.Test2.toString' type=<root>.Test2<T of <root>.Test2> origin=null
+            CONST String type=kotlin.String value=")"
   CLASS CLASS name:Test3 modality:FINAL visibility:public [data] superTypes:[kotlin.Any]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Test3<T of <root>.Test3>
     TYPE_PARAMETER name:T index:0 variance: superTypes:[kotlin.Any?]
@@ -121,19 +202,55 @@ FILE fqName:<root> fileName:/dataClassesGeneric.kt
           CALL 'public final fun <get-x> (): kotlin.collections.List<T of <root>.Test3> declared in <root>.Test3' type=kotlin.collections.List<T of <root>.Test3> origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.Test3<T of <root>.Test3> declared in <root>.Test3.copy' type=<root>.Test3<T of <root>.Test3> origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.Test3<T of <root>.Test3>, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test3<T of <root>.Test3>
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.Test3<T of <root>.Test3> declared in <root>.Test3.equals' type=<root>.Test3<T of <root>.Test3> origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.Test3.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.Test3<T of <root>.Test3>
+              GET_VAR 'other: kotlin.Any? declared in <root>.Test3.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_2 type:<root>.Test3<T of <root>.Test3> [val]
+          TYPE_OP type=<root>.Test3<T of <root>.Test3> origin=CAST typeOperand=<root>.Test3<T of <root>.Test3>
+            GET_VAR 'other: kotlin.Any? declared in <root>.Test3.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.collections.List<T of <root>.Test3> visibility:private [final]' type=kotlin.collections.List<T of <root>.Test3> origin=null
+                  receiver: GET_VAR '<this>: <root>.Test3<T of <root>.Test3> declared in <root>.Test3.equals' type=<root>.Test3<T of <root>.Test3> origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.collections.List<T of <root>.Test3> visibility:private [final]' type=kotlin.collections.List<T of <root>.Test3> origin=null
+                  receiver: GET_VAR 'val tmp_2: <root>.Test3<T of <root>.Test3> [val] declared in <root>.Test3.equals' type=<root>.Test3<T of <root>.Test3> origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test3'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.Test3<T of <root>.Test3>) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test3<T of <root>.Test3>
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.Test3'
+          CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
+            $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.collections.List<T of <root>.Test3> visibility:private [final]' type=kotlin.collections.List<T of <root>.Test3> origin=null
+              receiver: GET_VAR '<this>: <root>.Test3<T of <root>.Test3> declared in <root>.Test3.hashCode' type=<root>.Test3<T of <root>.Test3> origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.Test3<T of <root>.Test3>) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test3<T of <root>.Test3>
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.Test3'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="Test3("
+            CONST String type=kotlin.String value="x="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.collections.List<T of <root>.Test3> visibility:private [final]' type=kotlin.collections.List<T of <root>.Test3> origin=null
+              receiver: GET_VAR '<this>: <root>.Test3<T of <root>.Test3> declared in <root>.Test3.toString' type=<root>.Test3<T of <root>.Test3> origin=null
+            CONST String type=kotlin.String value=")"
   CLASS CLASS name:Test4 modality:FINAL visibility:public [data] superTypes:[kotlin.Any]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.Test4
     CONSTRUCTOR visibility:public <> (x:kotlin.collections.List<kotlin.String>) returnType:<root>.Test4 [primary]
@@ -165,16 +282,52 @@ FILE fqName:<root> fileName:/dataClassesGeneric.kt
           CALL 'public final fun <get-x> (): kotlin.collections.List<kotlin.String> declared in <root>.Test4' type=kotlin.collections.List<kotlin.String> origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.Test4 declared in <root>.Test4.copy' type=<root>.Test4 origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.Test4, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test4
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.Test4 declared in <root>.Test4.equals' type=<root>.Test4 origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.Test4.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test4'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.Test4
+              GET_VAR 'other: kotlin.Any? declared in <root>.Test4.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test4'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_3 type:<root>.Test4 [val]
+          TYPE_OP type=<root>.Test4 origin=CAST typeOperand=<root>.Test4
+            GET_VAR 'other: kotlin.Any? declared in <root>.Test4.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.collections.List<kotlin.String> visibility:private [final]' type=kotlin.collections.List<kotlin.String> origin=null
+                  receiver: GET_VAR '<this>: <root>.Test4 declared in <root>.Test4.equals' type=<root>.Test4 origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.collections.List<kotlin.String> visibility:private [final]' type=kotlin.collections.List<kotlin.String> origin=null
+                  receiver: GET_VAR 'val tmp_3: <root>.Test4 [val] declared in <root>.Test4.equals' type=<root>.Test4 origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test4'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test4'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.Test4) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test4
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.Test4'
+          CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
+            $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.collections.List<kotlin.String> visibility:private [final]' type=kotlin.collections.List<kotlin.String> origin=null
+              receiver: GET_VAR '<this>: <root>.Test4 declared in <root>.Test4.hashCode' type=<root>.Test4 origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.Test4) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test4
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.Test4'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="Test4("
+            CONST String type=kotlin.String value="x="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.collections.List<kotlin.String> visibility:private [final]' type=kotlin.collections.List<kotlin.String> origin=null
+              receiver: GET_VAR '<this>: <root>.Test4 declared in <root>.Test4.toString' type=<root>.Test4 origin=null
+            CONST String type=kotlin.String value=")"

compiler/testData/ir/irText/classes/kt31649.fir.txt

@@ -30,19 +30,64 @@ FILE fqName:<root> fileName:/kt31649.kt
           CALL 'public final fun <get-nn> (): kotlin.Nothing? declared in <root>.TestData' type=kotlin.Nothing? origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.TestData declared in <root>.TestData.copy' type=<root>.TestData origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.TestData, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.TestData
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.TestData declared in <root>.TestData.equals' type=<root>.TestData origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.TestData.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.TestData'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.TestData
+              GET_VAR 'other: kotlin.Any? declared in <root>.TestData.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.TestData'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:<root>.TestData [val]
+          TYPE_OP type=<root>.TestData origin=CAST typeOperand=<root>.TestData
+            GET_VAR 'other: kotlin.Any? declared in <root>.TestData.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:nn type:kotlin.Nothing? visibility:private [final]' type=kotlin.Nothing? origin=null
+                  receiver: GET_VAR '<this>: <root>.TestData declared in <root>.TestData.equals' type=<root>.TestData origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:nn type:kotlin.Nothing? visibility:private [final]' type=kotlin.Nothing? origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.TestData [val] declared in <root>.TestData.equals' type=<root>.TestData origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.TestData'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.TestData'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.TestData) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.TestData
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.TestData'
+          WHEN type=kotlin.Int origin=null
+            BRANCH
+              if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:nn type:kotlin.Nothing? visibility:private [final]' type=kotlin.Nothing? origin=null
+                  receiver: GET_VAR '<this>: <root>.TestData declared in <root>.TestData.hashCode' type=<root>.TestData origin=null
+                arg1: CONST Null type=kotlin.Nothing? value=null
+              then: CONST Int type=kotlin.Int value=0
+            BRANCH
+              if: CONST Boolean type=kotlin.Boolean value=true
+              then: CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
+                $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:nn type:kotlin.Nothing? visibility:private [final]' type=kotlin.Nothing? origin=null
+                  receiver: GET_VAR '<this>: <root>.TestData declared in <root>.TestData.hashCode' type=<root>.TestData origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.TestData) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.TestData
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.TestData'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="TestData("
+            CONST String type=kotlin.String value="nn="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:nn type:kotlin.Nothing? visibility:private [final]' type=kotlin.Nothing? origin=null
+              receiver: GET_VAR '<this>: <root>.TestData declared in <root>.TestData.toString' type=<root>.TestData origin=null
+            CONST String type=kotlin.String value=")"
   CLASS CLASS name:TestInline modality:FINAL visibility:public [inline] superTypes:[kotlin.Any]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.TestInline
     CONSTRUCTOR visibility:public <> (nn:kotlin.Nothing?) returnType:<root>.TestInline [primary]

compiler/testData/ir/irText/classes/lambdaInDataClassDefaultParameter.fir.txt

@@ -37,19 +37,55 @@ FILE fqName:<root> fileName:/lambdaInDataClassDefaultParameter.kt
           CALL 'public final fun <get-runA> (): kotlin.Function2<<root>.A, kotlin.String, kotlin.Unit> declared in <root>.A' type=kotlin.Function2<<root>.A, kotlin.String, kotlin.Unit> origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.A declared in <root>.A.copy' type=<root>.A origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.A, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.A
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.A declared in <root>.A.equals' type=<root>.A origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.A.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.A'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.A
+              GET_VAR 'other: kotlin.Any? declared in <root>.A.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.A'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:<root>.A [val]
+          TYPE_OP type=<root>.A origin=CAST typeOperand=<root>.A
+            GET_VAR 'other: kotlin.Any? declared in <root>.A.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:runA type:kotlin.Function2<<root>.A, kotlin.String, kotlin.Unit> visibility:private [final]' type=kotlin.Function2<<root>.A, kotlin.String, kotlin.Unit> origin=null
+                  receiver: GET_VAR '<this>: <root>.A declared in <root>.A.equals' type=<root>.A origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:runA type:kotlin.Function2<<root>.A, kotlin.String, kotlin.Unit> visibility:private [final]' type=kotlin.Function2<<root>.A, kotlin.String, kotlin.Unit> origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.A [val] declared in <root>.A.equals' type=<root>.A origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.A'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.A'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.A) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.A
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.A'
+          CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
+            $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:runA type:kotlin.Function2<<root>.A, kotlin.String, kotlin.Unit> visibility:private [final]' type=kotlin.Function2<<root>.A, kotlin.String, kotlin.Unit> origin=null
+              receiver: GET_VAR '<this>: <root>.A declared in <root>.A.hashCode' type=<root>.A origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.A) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.A
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.A'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="A("
+            CONST String type=kotlin.String value="runA="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:runA type:kotlin.Function2<<root>.A, kotlin.String, kotlin.Unit> visibility:private [final]' type=kotlin.Function2<<root>.A, kotlin.String, kotlin.Unit> origin=null
+              receiver: GET_VAR '<this>: <root>.A declared in <root>.A.toString' type=<root>.A origin=null
+            CONST String type=kotlin.String value=")"
   CLASS CLASS name:B modality:FINAL visibility:public [data] superTypes:[kotlin.Any]
     $this: VALUE_PARAMETER INSTANCE_RECEIVER name:<this> type:<root>.B
     CONSTRUCTOR visibility:public <> (x:kotlin.Any) returnType:<root>.B [primary]
@@ -103,16 +139,52 @@ FILE fqName:<root> fileName:/lambdaInDataClassDefaultParameter.kt
           CALL 'public final fun <get-x> (): kotlin.Any declared in <root>.B' type=kotlin.Any origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.B declared in <root>.B.copy' type=<root>.B origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.B, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.B
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.B declared in <root>.B.equals' type=<root>.B origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.B.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.B'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.B
+              GET_VAR 'other: kotlin.Any? declared in <root>.B.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.B'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_1 type:<root>.B [val]
+          TYPE_OP type=<root>.B origin=CAST typeOperand=<root>.B
+            GET_VAR 'other: kotlin.Any? declared in <root>.B.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Any visibility:private [final]' type=kotlin.Any origin=null
+                  receiver: GET_VAR '<this>: <root>.B declared in <root>.B.equals' type=<root>.B origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Any visibility:private [final]' type=kotlin.Any origin=null
+                  receiver: GET_VAR 'val tmp_1: <root>.B [val] declared in <root>.B.equals' type=<root>.B origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.B'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.B'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.B) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.B
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.B'
+          CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
+            $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Any visibility:private [final]' type=kotlin.Any origin=null
+              receiver: GET_VAR '<this>: <root>.B declared in <root>.B.hashCode' type=<root>.B origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.B) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.B
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.B'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="B("
+            CONST String type=kotlin.String value="x="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Any visibility:private [final]' type=kotlin.Any origin=null
+              receiver: GET_VAR '<this>: <root>.B declared in <root>.B.toString' type=<root>.B origin=null
+            CONST String type=kotlin.String value=")"

compiler/testData/ir/irText/declarations/parameters/dataClassMembers.fir.txt

@@ -55,16 +55,81 @@ FILE fqName:<root> fileName:/dataClassMembers.kt
           CALL 'public final fun <get-y> (): kotlin.String declared in <root>.Test' type=kotlin.String origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.Test<T of <root>.Test> declared in <root>.Test.copy' type=<root>.Test<T of <root>.Test> origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.Test<T of <root>.Test>, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test<T of <root>.Test>
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.Test<T of <root>.Test> declared in <root>.Test.equals' type=<root>.Test<T of <root>.Test> origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.Test.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.Test<T of <root>.Test>
+              GET_VAR 'other: kotlin.Any? declared in <root>.Test.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:<root>.Test<T of <root>.Test> [val]
+          TYPE_OP type=<root>.Test<T of <root>.Test> origin=CAST typeOperand=<root>.Test<T of <root>.Test>
+            GET_VAR 'other: kotlin.Any? declared in <root>.Test.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:T of <root>.Test visibility:private [final]' type=T of <root>.Test origin=null
+                  receiver: GET_VAR '<this>: <root>.Test<T of <root>.Test> declared in <root>.Test.equals' type=<root>.Test<T of <root>.Test> origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:T of <root>.Test visibility:private [final]' type=T of <root>.Test origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test<T of <root>.Test> [val] declared in <root>.Test.equals' type=<root>.Test<T of <root>.Test> origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                  receiver: GET_VAR '<this>: <root>.Test<T of <root>.Test> declared in <root>.Test.equals' type=<root>.Test<T of <root>.Test> origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.Test<T of <root>.Test> [val] declared in <root>.Test.equals' type=<root>.Test<T of <root>.Test> origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.Test'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.Test<T of <root>.Test>) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test<T of <root>.Test>
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.Test'
+          CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+            $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+              $this: WHEN type=kotlin.Int origin=null
+                BRANCH
+                  if: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQ
+                    arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:T of <root>.Test visibility:private [final]' type=T of <root>.Test origin=null
+                      receiver: GET_VAR '<this>: <root>.Test<T of <root>.Test> declared in <root>.Test.hashCode' type=<root>.Test<T of <root>.Test> origin=null
+                    arg1: CONST Null type=kotlin.Nothing? value=null
+                  then: CONST Int type=kotlin.Int value=0
+                BRANCH
+                  if: CONST Boolean type=kotlin.Boolean value=true
+                  then: CALL 'public open fun hashCode (): kotlin.Int declared in kotlin.Any' type=kotlin.Int origin=null
+                    $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:T of <root>.Test visibility:private [final]' type=T of <root>.Test origin=null
+                      receiver: GET_VAR '<this>: <root>.Test<T of <root>.Test> declared in <root>.Test.hashCode' type=<root>.Test<T of <root>.Test> origin=null
+              other: CONST Int type=kotlin.Int value=31
+            other: CALL 'public open fun hashCode (): kotlin.Int [fake_override] declared in kotlin.String' type=kotlin.Int origin=null
+              $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+                receiver: GET_VAR '<this>: <root>.Test<T of <root>.Test> declared in <root>.Test.hashCode' type=<root>.Test<T of <root>.Test> origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.Test<T of <root>.Test>) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.Test<T of <root>.Test>
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.Test'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="Test("
+            CONST String type=kotlin.String value="x="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:T of <root>.Test visibility:private [final]' type=T of <root>.Test origin=null
+              receiver: GET_VAR '<this>: <root>.Test<T of <root>.Test> declared in <root>.Test.toString' type=<root>.Test<T of <root>.Test> origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="y="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.String visibility:private [final]' type=kotlin.String origin=null
+              receiver: GET_VAR '<this>: <root>.Test<T of <root>.Test> declared in <root>.Test.toString' type=<root>.Test<T of <root>.Test> origin=null
+            CONST String type=kotlin.String value=")"

compiler/testData/ir/irText/lambdas/destructuringInLambda.fir.txt

@@ -52,19 +52,75 @@ FILE fqName:<root> fileName:/destructuringInLambda.kt
           CALL 'public final fun <get-y> (): kotlin.Int declared in <root>.A' type=kotlin.Int origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.A declared in <root>.A.copy' type=<root>.A origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.A, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.A
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.A declared in <root>.A.equals' type=<root>.A origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.A.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.A'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.A
+              GET_VAR 'other: kotlin.Any? declared in <root>.A.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.A'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_0 type:<root>.A [val]
+          TYPE_OP type=<root>.A origin=CAST typeOperand=<root>.A
+            GET_VAR 'other: kotlin.Any? declared in <root>.A.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                  receiver: GET_VAR '<this>: <root>.A declared in <root>.A.equals' type=<root>.A origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.A [val] declared in <root>.A.equals' type=<root>.A origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.A'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                  receiver: GET_VAR '<this>: <root>.A declared in <root>.A.equals' type=<root>.A origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                  receiver: GET_VAR 'val tmp_0: <root>.A [val] declared in <root>.A.equals' type=<root>.A origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.A'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.A'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.A) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.A
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.A'
+          CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+            $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+              $this: CALL 'public open fun hashCode (): kotlin.Int [fake_override] declared in kotlin.Int' type=kotlin.Int origin=null
+                $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                  receiver: GET_VAR '<this>: <root>.A declared in <root>.A.hashCode' type=<root>.A origin=null
+              other: CONST Int type=kotlin.Int value=31
+            other: CALL 'public open fun hashCode (): kotlin.Int [fake_override] declared in kotlin.Int' type=kotlin.Int origin=null
+              $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                receiver: GET_VAR '<this>: <root>.A declared in <root>.A.hashCode' type=<root>.A origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.A) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.A
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.A'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="A("
+            CONST String type=kotlin.String value="x="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+              receiver: GET_VAR '<this>: <root>.A declared in <root>.A.toString' type=<root>.A origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="y="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+              receiver: GET_VAR '<this>: <root>.A declared in <root>.A.toString' type=<root>.A origin=null
+            CONST String type=kotlin.String value=")"
   PROPERTY name:fn visibility:public modality:FINAL [var]
     FIELD PROPERTY_BACKING_FIELD name:fn type:kotlin.Function1<<root>.A, kotlin.Int> visibility:private [static]
       EXPRESSION_BODY

compiler/testData/ir/irText/types/nullChecks/enhancedNullabilityInForLoop.fir.txt

@@ -167,16 +167,72 @@ FILE fqName:<root> fileName:/enhancedNullabilityInForLoop.kt
           CALL 'public final fun <get-y> (): kotlin.Int declared in <root>.P' type=kotlin.Int origin=GET_PROPERTY
             $this: GET_VAR '<this>: <root>.P declared in <root>.P.copy' type=<root>.P origin=null
       BLOCK_BODY
-    FUN FAKE_OVERRIDE name:equals visibility:public modality:OPEN <> ($this:kotlin.Any, other:kotlin.Any?) returnType:kotlin.Boolean [fake_override,operator]
-      overridden:
-        public open fun equals (other: kotlin.Any?): kotlin.Boolean [operator] declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-      VALUE_PARAMETER name:other index:0 type:kotlin.Any?
-    FUN FAKE_OVERRIDE name:hashCode visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.Int [fake_override]
-      overridden:
-        public open fun hashCode (): kotlin.Int declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
-    FUN FAKE_OVERRIDE name:toString visibility:public modality:OPEN <> ($this:kotlin.Any) returnType:kotlin.String [fake_override]
-      overridden:
-        public open fun toString (): kotlin.String declared in kotlin.Any
-      $this: VALUE_PARAMETER name:<this> type:kotlin.Any
+    FUN GENERATED_DATA_CLASS_MEMBER name:equals visibility:public modality:OPEN <> ($this:<root>.P, other:kotlin.Any?) returnType:kotlin.Boolean
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.P
+      VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:other index:0 type:kotlin.Any?
+      BLOCK_BODY
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun EQEQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EQEQEQ
+              arg0: GET_VAR '<this>: <root>.P declared in <root>.P.equals' type=<root>.P origin=null
+              arg1: GET_VAR 'other: kotlin.Any? declared in <root>.P.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.P'
+              CONST Boolean type=kotlin.Boolean value=true
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: TYPE_OP type=kotlin.Boolean origin=NOT_INSTANCEOF typeOperand=<root>.P
+              GET_VAR 'other: kotlin.Any? declared in <root>.P.equals' type=kotlin.Any? origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.P'
+              CONST Boolean type=kotlin.Boolean value=false
+        VAR IR_TEMPORARY_VARIABLE name:tmp_5 type:<root>.P [val]
+          TYPE_OP type=<root>.P origin=CAST typeOperand=<root>.P
+            GET_VAR 'other: kotlin.Any? declared in <root>.P.equals' type=kotlin.Any? origin=null
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                  receiver: GET_VAR '<this>: <root>.P declared in <root>.P.equals' type=<root>.P origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                  receiver: GET_VAR 'val tmp_5: <root>.P [val] declared in <root>.P.equals' type=<root>.P origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.P'
+              CONST Boolean type=kotlin.Boolean value=false
+        WHEN type=kotlin.Unit origin=null
+          BRANCH
+            if: CALL 'public final fun not (): kotlin.Boolean [operator] declared in kotlin.Boolean' type=kotlin.Boolean origin=EXCLEQ
+              $this: CALL 'public final fun EQEQ (arg0: kotlin.Any?, arg1: kotlin.Any?): kotlin.Boolean declared in kotlin.internal.ir' type=kotlin.Boolean origin=EXCLEQ
+                arg0: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                  receiver: GET_VAR '<this>: <root>.P declared in <root>.P.equals' type=<root>.P origin=null
+                arg1: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                  receiver: GET_VAR 'val tmp_5: <root>.P [val] declared in <root>.P.equals' type=<root>.P origin=null
+            then: RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.P'
+              CONST Boolean type=kotlin.Boolean value=false
+        RETURN type=kotlin.Nothing from='public open fun equals (other: kotlin.Any?): kotlin.Boolean declared in <root>.P'
+          CONST Boolean type=kotlin.Boolean value=true
+    FUN GENERATED_DATA_CLASS_MEMBER name:hashCode visibility:public modality:OPEN <> ($this:<root>.P) returnType:kotlin.Int
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.P
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun hashCode (): kotlin.Int declared in <root>.P'
+          CALL 'public final fun plus (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+            $this: CALL 'public final fun times (other: kotlin.Int): kotlin.Int [operator] declared in kotlin.Int' type=kotlin.Int origin=null
+              $this: CALL 'public open fun hashCode (): kotlin.Int [fake_override] declared in kotlin.Int' type=kotlin.Int origin=null
+                $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                  receiver: GET_VAR '<this>: <root>.P declared in <root>.P.hashCode' type=<root>.P origin=null
+              other: CONST Int type=kotlin.Int value=31
+            other: CALL 'public open fun hashCode (): kotlin.Int [fake_override] declared in kotlin.Int' type=kotlin.Int origin=null
+              $this: GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+                receiver: GET_VAR '<this>: <root>.P declared in <root>.P.hashCode' type=<root>.P origin=null
+    FUN GENERATED_DATA_CLASS_MEMBER name:toString visibility:public modality:OPEN <> ($this:<root>.P) returnType:kotlin.String
+      $this: VALUE_PARAMETER GENERATED_DATA_CLASS_MEMBER name:<this> type:<root>.P
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='public open fun toString (): kotlin.String declared in <root>.P'
+          STRING_CONCATENATION type=kotlin.String
+            CONST String type=kotlin.String value="P("
+            CONST String type=kotlin.String value="x="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:x type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+              receiver: GET_VAR '<this>: <root>.P declared in <root>.P.toString' type=<root>.P origin=null
+            CONST String type=kotlin.String value=", "
+            CONST String type=kotlin.String value="y="
+            GET_FIELD 'FIELD PROPERTY_BACKING_FIELD name:y type:kotlin.Int visibility:private [final]' type=kotlin.Int origin=null
+              receiver: GET_VAR '<this>: <root>.P declared in <root>.P.toString' type=<root>.P origin=null
+            CONST String type=kotlin.String value=")"

compiler/tests/org/jetbrains/kotlin/jvm/compiler/MemoryOptimizationsTest.kt

@@ -18,10 +18,10 @@ package org.jetbrains.kotlin.jvm.compiler
 
 import org.jetbrains.kotlin.builtins.KotlinBuiltIns
 import org.jetbrains.kotlin.descriptors.findClassAcrossModuleDependencies
+import org.jetbrains.kotlin.ir.util.findFirstFunction
 import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.psi2ir.findFirstFunction
 import org.jetbrains.kotlin.psi2ir.findSingleFunction
 import org.jetbrains.kotlin.resolve.lazy.JvmResolveUtil
 import org.jetbrains.kotlin.test.ConfigurationKind