[IR] Mark IrFunctionImpl with an opt-in annotation

KT-59318
2023-12-07 17:43:00 +01:00
parent e1d03f6540
commit 41197392f9
10 changed files with 168 additions and 140 deletions
@@ -8,6 +8,7 @@ package org.jetbrains.kotlin.ir.declarations.impl
 import org.jetbrains.kotlin.descriptors.DescriptorVisibility
 import org.jetbrains.kotlin.descriptors.FunctionDescriptor
 import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.ir.IrImplementationDetail
 import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.descriptors.toIrBasedDescriptor
@@ -21,7 +22,10 @@ import org.jetbrains.kotlin.ir.types.impl.ReturnTypeIsNotInitializedException
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedContainerSource

-class IrFunctionImpl(
+// IMPORTANT: This class is used in the Compose IDE plugin (platform 233).
+// Don't rename it or change its constructor's signature so as not to break binary compatibility when an older version of
+// the Compose IDE plugin is used with a newer version of the Kotlin IDE plugin that vendors the updated compiler version.
+class IrFunctionImpl @IrImplementationDetail constructor(
    override val startOffset: Int,
    override val endOffset: Int,
    override var origin: IrDeclarationOrigin,
@@ -12,14 +12,17 @@ import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.incremental.components.NoLookupLocation
 import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
 import org.jetbrains.kotlin.ir.declarations.*
-import org.jetbrains.kotlin.ir.declarations.impl.*
+import org.jetbrains.kotlin.ir.declarations.impl.IrFactoryImpl
+import org.jetbrains.kotlin.ir.declarations.impl.IrFileImpl
+import org.jetbrains.kotlin.ir.declarations.impl.IrPropertyImpl
+import org.jetbrains.kotlin.ir.declarations.impl.IrValueParameterImpl
 import org.jetbrains.kotlin.ir.descriptors.IrAbstractDescriptorBasedFunctionFactory
 import org.jetbrains.kotlin.ir.linkage.IrProvider
 import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
 import org.jetbrains.kotlin.ir.symbols.IrPropertySymbol
 import org.jetbrains.kotlin.ir.symbols.IrSimpleFunctionSymbol
 import org.jetbrains.kotlin.ir.symbols.IrSymbol
-import org.jetbrains.kotlin.ir.symbols.impl.*
+import org.jetbrains.kotlin.ir.symbols.impl.IrValueParameterSymbolImpl
 import org.jetbrains.kotlin.ir.types.IrType
 import org.jetbrains.kotlin.ir.types.SimpleTypeNullability
 import org.jetbrains.kotlin.ir.types.classOrNull
@@ -188,9 +191,23 @@ internal class BuiltInFictitiousFunctionIrClassFactory(
    ): IrSimpleFunction {
        val functionFactory: (IrSimpleFunctionSymbol) -> IrSimpleFunction = {
            with(descriptor) {
-                IrFunctionImpl(
-                    SYNTHETIC_OFFSET, SYNTHETIC_OFFSET, origin, it, name, visibility, modality, returnType,
-                    isInline, isExternal, isTailrec, isSuspend, isOperator, isInfix, isExpect, isFakeOverride
+                symbolTable.irFactory.createSimpleFunction(
+                        SYNTHETIC_OFFSET,
+                        SYNTHETIC_OFFSET,
+                        origin,
+                        name,
+                        visibility,
+                        isInline,
+                        isExpect,
+                        returnType,
+                        modality,
+                        it,
+                        isTailrec,
+                        isSuspend,
+                        isOperator,
+                        isInfix,
+                        isExternal,
+                        isFakeOverride = isFakeOverride,
                )
            }
        }
@@ -329,10 +346,23 @@ internal class BuiltInFictitiousFunctionIrClassFactory(

            val functionDeclare = { s: IrSimpleFunctionSymbol ->
                descriptor.run {
-                    IrFunctionImpl(
-                            offset, offset, memberOrigin, s, name, visibility, modality, returnType,
-                            isInline, isExternal, isTailrec, isSuspend, isOperator, isInfix, isExpect,
-                            isFakeOverride = true
+                    symbolTable.irFactory.createSimpleFunction(
+                            offset,
+                            offset,
+                            memberOrigin,
+                            name,
+                            visibility,
+                            isInline,
+                            isExpect,
+                            returnType,
+                            modality,
+                            s,
+                            isTailrec,
+                            isSuspend,
+                            isOperator,
+                            isInfix,
+                            isExternal,
+                            isFakeOverride = true,
                    )
                }
            }
@@ -3,10 +3,11 @@ package org.jetbrains.kotlin.backend.konan.cgen
 import org.jetbrains.kotlin.backend.common.lower.at
 import org.jetbrains.kotlin.backend.common.lower.createIrBuilder
 import org.jetbrains.kotlin.backend.common.lower.irNot
-import org.jetbrains.kotlin.backend.konan.*
+import org.jetbrains.kotlin.backend.konan.InteropFqNames
+import org.jetbrains.kotlin.backend.konan.PrimitiveBinaryType
+import org.jetbrains.kotlin.backend.konan.RuntimeNames
 import org.jetbrains.kotlin.backend.konan.ir.KonanSymbols
 import org.jetbrains.kotlin.backend.konan.ir.buildSimpleAnnotation
-import org.jetbrains.kotlin.ir.util.getAnnotationArgumentValue
 import org.jetbrains.kotlin.backend.konan.ir.konanLibrary
 import org.jetbrains.kotlin.backend.konan.lower.FunctionReferenceLowering
 import org.jetbrains.kotlin.descriptors.ClassKind
@@ -18,7 +19,8 @@ import org.jetbrains.kotlin.ir.IrStatement
 import org.jetbrains.kotlin.ir.UNDEFINED_OFFSET
 import org.jetbrains.kotlin.ir.builders.*
 import org.jetbrains.kotlin.ir.declarations.*
-import org.jetbrains.kotlin.ir.declarations.impl.*
+import org.jetbrains.kotlin.ir.declarations.impl.IrFactoryImpl
+import org.jetbrains.kotlin.ir.declarations.impl.IrValueParameterImpl
 import org.jetbrains.kotlin.ir.expressions.*
 import org.jetbrains.kotlin.ir.expressions.impl.IrConstImpl
 import org.jetbrains.kotlin.ir.expressions.impl.IrFunctionReferenceImpl
@@ -573,23 +575,22 @@ private fun KotlinStubs.createFakeKotlinExternalFunction(
        cFunctionName: String,
        isObjCMethod: Boolean
 ): IrSimpleFunction {
-    val bridge = IrFunctionImpl(
+    val bridge = irBuiltIns.irFactory.createSimpleFunction(
            UNDEFINED_OFFSET,
            UNDEFINED_OFFSET,
            IrDeclarationOrigin.DEFINED,
-            IrSimpleFunctionSymbolImpl(),
            Name.identifier(cFunctionName),
            DescriptorVisibilities.PRIVATE,
-            Modality.FINAL,
-            signature.returnType,
            isInline = false,
-            isExternal = true,
+            isExpect = false,
+            signature.returnType,
+            Modality.FINAL,
+            IrSimpleFunctionSymbolImpl(),
            isTailrec = false,
            isSuspend = false,
-            isExpect = false,
-            isFakeOverride = false,
            isOperator = false,
-            isInfix = false
+            isInfix = false,
+            isExternal = true,
    )

    bridge.annotations += buildSimpleAnnotation(irBuiltIns, UNDEFINED_OFFSET, UNDEFINED_OFFSET,
@@ -1186,15 +1187,21 @@ private class ObjCBlockPointerValuePassing(
        val overriddenInvokeMethod = (functionType.classifier.owner as IrClass).simpleFunctions()
                .single { it.name == OperatorNameConventions.INVOKE }

-        val invokeMethod = IrFunctionImpl(
-                startOffset, endOffset,
+        val invokeMethod = context.irFactory.createSimpleFunction(
+                startOffset,
+                endOffset,
                OBJC_BLOCK_FUNCTION_IMPL,
-                IrSimpleFunctionSymbolImpl(),
                overriddenInvokeMethod.name,
-                DescriptorVisibilities.PUBLIC, Modality.FINAL,
+                DescriptorVisibilities.PUBLIC,
+                isInline = false,
+                isExpect = false,
                returnType = functionType.arguments.last().typeOrNull!!,
-                isInline = false, isExternal = false, isTailrec = false, isSuspend = false, isExpect = false,
-                isFakeOverride = false, isOperator = false, isInfix = false
+                Modality.FINAL,
+                IrSimpleFunctionSymbolImpl(),
+                isTailrec = false,
+                isSuspend = false,
+                isOperator = false,
+                isInfix = false,
        )
        invokeMethod.overriddenSymbols += overriddenInvokeMethod.symbol
        irClass.addChild(invokeMethod)
@@ -12,7 +12,7 @@ import org.jetbrains.kotlin.ir.IrStatement
 import org.jetbrains.kotlin.ir.builders.*
 import org.jetbrains.kotlin.ir.builders.declarations.buildVariable
 import org.jetbrains.kotlin.ir.declarations.*
-import org.jetbrains.kotlin.ir.declarations.impl.IrFunctionImpl
+import org.jetbrains.kotlin.ir.declarations.impl.IrFactoryImpl
 import org.jetbrains.kotlin.ir.declarations.impl.IrValueParameterImpl
 import org.jetbrains.kotlin.ir.expressions.IrExpression
 import org.jetbrains.kotlin.ir.expressions.IrMemberAccessExpression
@@ -112,23 +112,23 @@ private fun createKotlinBridge(
        foreignExceptionMode: ForeignExceptionMode.Mode,
        origin: IrDeclarationOrigin
 ): IrFunction {
-    val bridge = IrFunctionImpl(
+    val bridge = stubs.irBuiltIns.irFactory.createSimpleFunction(
            startOffset,
            endOffset,
            origin,
-            IrSimpleFunctionSymbolImpl(),
            Name.identifier(cBridgeName),
            DescriptorVisibilities.PRIVATE,
-            Modality.FINAL,
-            IrUninitializedType,
            isInline = false,
-            isExternal = isExternal,
+            isExpect = false,
+            IrUninitializedType,
+            Modality.FINAL,
+            IrSimpleFunctionSymbolImpl(),
            isTailrec = false,
            isSuspend = false,
-            isExpect = false,
-            isFakeOverride = false,
            isOperator = false,
-            isInfix = false
+            isInfix = false,
+            isExternal = isExternal,
+            isFakeOverride = false,
    )
    if (isExternal) {
        bridge.annotations += buildSimpleAnnotation(stubs.irBuiltIns, startOffset, endOffset,
@@ -21,10 +21,13 @@ import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
 import org.jetbrains.kotlin.ir.builders.*
 import org.jetbrains.kotlin.ir.builders.declarations.buildFun
 import org.jetbrains.kotlin.ir.declarations.*
-import org.jetbrains.kotlin.ir.declarations.impl.IrFunctionImpl
 import org.jetbrains.kotlin.ir.declarations.impl.IrValueParameterImpl
-import org.jetbrains.kotlin.ir.expressions.*
-import org.jetbrains.kotlin.ir.expressions.impl.*
+import org.jetbrains.kotlin.ir.expressions.IrBlockBody
+import org.jetbrains.kotlin.ir.expressions.IrCall
+import org.jetbrains.kotlin.ir.expressions.IrExpression
+import org.jetbrains.kotlin.ir.expressions.IrFunctionReference
+import org.jetbrains.kotlin.ir.expressions.impl.IrCallImpl
+import org.jetbrains.kotlin.ir.expressions.impl.IrFunctionReferenceImpl
 import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
 import org.jetbrains.kotlin.ir.symbols.IrSimpleFunctionSymbol
 import org.jetbrains.kotlin.ir.symbols.impl.IrSimpleFunctionSymbolImpl
@@ -127,23 +130,22 @@ internal class WorkersBridgesBuilding(val context: Context) : DeclarationContain
                    val startOffset = jobFunction.startOffset
                    val endOffset = jobFunction.endOffset
                    runtimeJobFunction =
-                        IrFunctionImpl(
-                                startOffset, endOffset,
+                        context.irFactory.createSimpleFunction(
+                                startOffset,
+                                endOffset,
                                IrDeclarationOrigin.DEFINED,
-                                IrSimpleFunctionSymbolImpl(),
                                jobFunction.name,
                                jobFunction.visibility,
-                                jobFunction.modality,
                                isInline = false,
-                                isExternal = false,
+                                isExpect = false,
+                                returnType = context.irBuiltIns.anyNType,
+                                jobFunction.modality,
+                                IrSimpleFunctionSymbolImpl(),
                                isTailrec = false,
                                isSuspend = false,
-                                returnType = context.irBuiltIns.anyNType,
-                                isExpect = false,
-                                isFakeOverride = false,
                                isOperator = false,
-                                isInfix = false
-                    )
+                                isInfix = false,
+                        )

                    runtimeJobFunction.valueParameters +=
                        IrValueParameterImpl(
@@ -7,20 +7,15 @@ package org.jetbrains.kotlin.backend.konan.lower

 import org.jetbrains.kotlin.backend.common.ClassLoweringPass
 import org.jetbrains.kotlin.backend.common.CommonBackendContext
-import org.jetbrains.kotlin.backend.common.lower.createIrBuilder
-import org.jetbrains.kotlin.backend.common.lower.irBlockBody
 import org.jetbrains.kotlin.backend.konan.descriptors.synthesizedName
-import org.jetbrains.kotlin.descriptors.*
+import org.jetbrains.kotlin.descriptors.DescriptorVisibilities
+import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.ir.IrStatement
-import org.jetbrains.kotlin.ir.builders.irDelegatingConstructorCall
 import org.jetbrains.kotlin.ir.declarations.*
-import org.jetbrains.kotlin.ir.declarations.impl.IrFunctionImpl
 import org.jetbrains.kotlin.ir.expressions.*
 import org.jetbrains.kotlin.ir.expressions.impl.*
 import org.jetbrains.kotlin.ir.symbols.IrSimpleFunctionSymbol
 import org.jetbrains.kotlin.ir.symbols.impl.IrSimpleFunctionSymbolImpl
-import org.jetbrains.kotlin.ir.types.isPrimitiveType
-import org.jetbrains.kotlin.ir.types.isString
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid
 import org.jetbrains.kotlin.ir.visitors.transformChildrenVoid
@@ -109,22 +104,21 @@ internal class InitializersLowering(val context: CommonBackendContext) : ClassLo
            val startOffset = irClass.startOffset
            val endOffset = irClass.endOffset
            val initializeFun =
-                IrFunctionImpl(
-                        startOffset, endOffset,
+                context.irFactory.createSimpleFunction(
+                        startOffset,
+                        endOffset,
                        DECLARATION_ORIGIN_ANONYMOUS_INITIALIZER,
-                        IrSimpleFunctionSymbolImpl(),
                        "INITIALIZER".synthesizedName,
                        DescriptorVisibilities.PRIVATE,
-                        Modality.FINAL,
-                        context.irBuiltIns.unitType,
                        isInline = false,
-                        isSuspend = false,
-                        isExternal = false,
-                        isTailrec = false,
                        isExpect = false,
-                        isFakeOverride = false,
+                        context.irBuiltIns.unitType,
+                        Modality.FINAL,
+                        IrSimpleFunctionSymbolImpl(),
+                        isTailrec = false,
+                        isSuspend = false,
                        isOperator = false,
-                        isInfix = false
+                        isInfix = false,
                ).apply {
                    parent = irClass
                    irClass.declarations.add(this)
@@ -6,7 +6,6 @@
 package org.jetbrains.kotlin.backend.konan.lower

 import org.jetbrains.kotlin.backend.common.FileLoweringPass
-import org.jetbrains.kotlin.ir.util.inlineFunction
 import org.jetbrains.kotlin.backend.common.lower.*
 import org.jetbrains.kotlin.backend.common.peek
 import org.jetbrains.kotlin.backend.common.pop
@@ -15,7 +14,10 @@ import org.jetbrains.kotlin.backend.konan.*
 import org.jetbrains.kotlin.backend.konan.cgen.*
 import org.jetbrains.kotlin.backend.konan.descriptors.allOverriddenFunctions
 import org.jetbrains.kotlin.backend.konan.descriptors.synthesizedName
-import org.jetbrains.kotlin.backend.konan.ir.*
+import org.jetbrains.kotlin.backend.konan.ir.buildSimpleAnnotation
+import org.jetbrains.kotlin.backend.konan.ir.getSuperClassNotAny
+import org.jetbrains.kotlin.backend.konan.ir.isFromInteropLibrary
+import org.jetbrains.kotlin.backend.konan.ir.konanLibrary
 import org.jetbrains.kotlin.backend.konan.llvm.IntrinsicType
 import org.jetbrains.kotlin.backend.konan.llvm.tryGetIntrinsicType
 import org.jetbrains.kotlin.descriptors.ClassDescriptor
@@ -27,13 +29,10 @@ import org.jetbrains.kotlin.ir.IrStatement
 import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
 import org.jetbrains.kotlin.ir.builders.*
 import org.jetbrains.kotlin.ir.declarations.*
-import org.jetbrains.kotlin.ir.declarations.impl.IrFieldImpl
-import org.jetbrains.kotlin.ir.declarations.impl.IrFunctionImpl
 import org.jetbrains.kotlin.ir.declarations.impl.IrValueParameterImpl
 import org.jetbrains.kotlin.ir.expressions.*
 import org.jetbrains.kotlin.ir.expressions.impl.*
 import org.jetbrains.kotlin.ir.objcinterop.*
-import org.jetbrains.kotlin.ir.util.toIrConst
 import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
 import org.jetbrains.kotlin.ir.symbols.IrFunctionSymbol
 import org.jetbrains.kotlin.ir.symbols.IrSimpleFunctionSymbol
@@ -271,22 +270,21 @@ private class InteropLoweringPart1(val generationState: NativeGenerationState) :

        // Generate `override fun init...(...) = this.initBy(...)`:

-        return IrFunctionImpl(
-                constructor.startOffset, constructor.endOffset,
+        return context.irFactory.createSimpleFunction(
+                constructor.startOffset,
+                constructor.endOffset,
                OVERRIDING_INITIALIZER_BY_CONSTRUCTOR,
-                IrSimpleFunctionSymbolImpl(),
                initMethod.name,
                DescriptorVisibilities.PUBLIC,
-                Modality.OPEN,
-                irClass.defaultType,
                isInline = false,
-                isExternal = false,
+                isExpect = false,
+                irClass.defaultType,
+                Modality.OPEN,
+                IrSimpleFunctionSymbolImpl(),
                isTailrec = false,
                isSuspend = false,
-                isExpect = false,
-                isFakeOverride = false,
                isOperator = false,
-                isInfix = false
+                isInfix = false,
        ).also { result ->
            result.parent = irClass
            result.createDispatchReceiverParameter()
@@ -369,24 +367,23 @@ private class InteropLoweringPart1(val generationState: NativeGenerationState) :
        function.valueParameters.mapTo(parameterTypes) { nativePtrType }

        val newFunction =
-            IrFunctionImpl(
-                    function.startOffset, function.endOffset,
+            context.irFactory.createSimpleFunction(
+                    function.startOffset,
+                    function.endOffset,
                    // The generated function is called by ObjC and contains Kotlin code, so
                    // it must switch thread state and potentially initialize runtime on this thread.
                    CBridgeOrigin.C_TO_KOTLIN_BRIDGE,
-                    IrSimpleFunctionSymbolImpl(),
                    ("imp:$selector").synthesizedName,
                    DescriptorVisibilities.PRIVATE,
-                    Modality.FINAL,
-                    function.returnType,
                    isInline = false,
-                    isExternal = false,
+                    isExpect = false,
+                    function.returnType,
+                    Modality.FINAL,
+                    IrSimpleFunctionSymbolImpl(),
                    isTailrec = false,
                    isSuspend = false,
-                    isExpect = false,
-                    isFakeOverride = false,
                    isOperator = false,
-                    isInfix = false
+                    isInfix = false,
            )

        newFunction.valueParameters += parameterTypes.mapIndexed { index, type ->
@@ -5,18 +5,19 @@ import org.jetbrains.kotlin.backend.common.lower.*
 import org.jetbrains.kotlin.backend.common.lower.optimizations.LivenessAnalysis
 import org.jetbrains.kotlin.backend.konan.Context
 import org.jetbrains.kotlin.backend.konan.NativeGenerationState
-import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.descriptors.DescriptorVisibilities
+import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.IrStatement
 import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
 import org.jetbrains.kotlin.ir.builders.*
-import org.jetbrains.kotlin.ir.builders.irCall
 import org.jetbrains.kotlin.ir.declarations.*
-import org.jetbrains.kotlin.ir.declarations.impl.IrFunctionImpl
 import org.jetbrains.kotlin.ir.declarations.impl.IrVariableImpl
 import org.jetbrains.kotlin.ir.expressions.*
-import org.jetbrains.kotlin.ir.expressions.impl.*
+import org.jetbrains.kotlin.ir.expressions.impl.IrGetValueImpl
+import org.jetbrains.kotlin.ir.expressions.impl.IrSetValueImpl
+import org.jetbrains.kotlin.ir.expressions.impl.IrSuspendableExpressionImpl
+import org.jetbrains.kotlin.ir.expressions.impl.IrSuspensionPointImpl
 import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
 import org.jetbrains.kotlin.ir.symbols.IrVariableSymbol
 import org.jetbrains.kotlin.ir.symbols.impl.IrSimpleFunctionSymbolImpl
@@ -28,7 +29,6 @@ import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.ir.visitors.*
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.resolve.calls.checkers.isRestrictedSuspendFunction
-import org.jetbrains.kotlin.resolve.calls.checkers.isRestrictsSuspensionReceiver

 internal class NativeSuspendFunctionsLowering(
        generationState: NativeGenerationState
@@ -457,42 +457,40 @@ internal class NativeSuspendFunctionsLowering(

    // These are marker functions to split up the lowering on two parts.
    private val saveState =
-        IrFunctionImpl(
-                SYNTHETIC_OFFSET, SYNTHETIC_OFFSET,
+        context.irFactory.createSimpleFunction(
+                SYNTHETIC_OFFSET,
+                SYNTHETIC_OFFSET,
                IrDeclarationOrigin.DEFINED,
-                IrSimpleFunctionSymbolImpl(),
                "saveState".synthesizedName,
                DescriptorVisibilities.PRIVATE,
-                Modality.ABSTRACT,
-                context.irBuiltIns.unitType,
                isInline = false,
-                isExternal = false,
+                isExpect = false,
+                context.irBuiltIns.unitType,
+                Modality.ABSTRACT,
+                IrSimpleFunctionSymbolImpl(),
                isTailrec = false,
                isSuspend = false,
-                isExpect = false,
-                isFakeOverride = false,
                isOperator = false,
-                isInfix = false
+                isInfix = false,
        )

    private val restoreState =
-        IrFunctionImpl(
-                SYNTHETIC_OFFSET, SYNTHETIC_OFFSET,
-                IrDeclarationOrigin.DEFINED,
-                IrSimpleFunctionSymbolImpl(),
-                "restoreState".synthesizedName,
-                DescriptorVisibilities.PRIVATE,
-                Modality.ABSTRACT,
-                context.irBuiltIns.unitType,
-                isInline = false,
-                isExternal = false,
-                isTailrec = false,
-                isSuspend = false,
-                isExpect = false,
-                isFakeOverride = false,
-                isOperator = false,
-                isInfix = false
-        )
+            context.irFactory.createSimpleFunction(
+                    SYNTHETIC_OFFSET,
+                    SYNTHETIC_OFFSET,
+                    IrDeclarationOrigin.DEFINED,
+                    "restoreState".synthesizedName,
+                    DescriptorVisibilities.PRIVATE,
+                    isInline = false,
+                    isExpect = false,
+                    context.irBuiltIns.unitType,
+                    Modality.ABSTRACT,
+                    IrSimpleFunctionSymbolImpl(),
+                    isTailrec = false,
+                    isSuspend = false,
+                    isOperator = false,
+                    isInfix = false,
+            )

    private fun IrBuilderWithScope.irVar(name: Name, type: IrType,
                                         isMutable: Boolean = false,
@@ -21,7 +21,6 @@ import org.jetbrains.kotlin.ir.IrStatement
 import org.jetbrains.kotlin.ir.builders.*
 import org.jetbrains.kotlin.ir.builders.declarations.buildField
 import org.jetbrains.kotlin.ir.declarations.*
-import org.jetbrains.kotlin.ir.declarations.impl.IrFunctionImpl
 import org.jetbrains.kotlin.ir.expressions.IrExpression
 import org.jetbrains.kotlin.ir.expressions.impl.*
 import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
@@ -332,22 +331,21 @@ internal class TestProcessor (val context: Context) {
    private fun buildObjectGetter(objectSymbol: IrClassSymbol,
                                  owner: IrClass,
                                  getterName: Name): IrSimpleFunction =
-        IrFunctionImpl(
-                owner.startOffset, owner.endOffset,
+        context.irFactory.createSimpleFunction(
+                owner.startOffset,
+                owner.endOffset,
                TEST_SUITE_GENERATED_MEMBER,
-                IrSimpleFunctionSymbolImpl(),
                getterName,
                DescriptorVisibilities.PROTECTED,
-                Modality.FINAL,
-                objectSymbol.starProjectedType,
                isInline = false,
-                isExternal = false,
+                isExpect = false,
+                objectSymbol.starProjectedType,
+                Modality.FINAL,
+                IrSimpleFunctionSymbolImpl(),
                isTailrec = false,
                isSuspend = false,
-                isExpect = false,
-                isFakeOverride = false,
                isOperator = false,
-                isInfix = false
+                isInfix = false,
        ).apply {
            parent = owner

@@ -370,22 +368,21 @@ internal class TestProcessor (val context: Context) {
    private fun buildInstanceGetter(classSymbol: IrClassSymbol,
                                    owner: IrClass,
                                    getterName: Name): IrSimpleFunction =
-        IrFunctionImpl(
-                owner.startOffset, owner.endOffset,
+        context.irFactory.createSimpleFunction(
+                owner.startOffset,
+                owner.endOffset,
                TEST_SUITE_GENERATED_MEMBER,
-                IrSimpleFunctionSymbolImpl(),
                getterName,
                DescriptorVisibilities.PROTECTED,
-                Modality.FINAL,
-                classSymbol.starProjectedType,
                isInline = false,
-                isExternal = false,
+                isExpect = false,
+                classSymbol.starProjectedType,
+                Modality.FINAL,
+                IrSimpleFunctionSymbolImpl(),
                isTailrec = false,
                isSuspend = false,
-                isExpect = false,
-                isFakeOverride = false,
                isOperator = false,
-                isInfix = false
+                isInfix = false,
        ).apply {
            parent = owner

@@ -21,7 +21,6 @@ import org.jetbrains.kotlin.ir.builders.declarations.buildFun
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.expressions.*
 import org.jetbrains.kotlin.ir.symbols.IrFieldSymbol
-import org.jetbrains.kotlin.ir.declarations.impl.IrFunctionImpl
 import org.jetbrains.kotlin.ir.symbols.IrReturnableBlockSymbol
 import org.jetbrains.kotlin.ir.types.IrType
 import org.jetbrains.kotlin.ir.util.*