diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrClassifierStorage.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrClassifierStorage.kt
index 630ff095666..f268f055feb 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrClassifierStorage.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrClassifierStorage.kt
@@ -8,6 +8,7 @@ package org.jetbrains.kotlin.fir.backend
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.fir.declarations.*
 import org.jetbrains.kotlin.fir.resolve.firProvider
+import org.jetbrains.kotlin.fir.symbols.StandardClassIds
 import org.jetbrains.kotlin.fir.symbols.impl.FirClassSymbol
 import org.jetbrains.kotlin.fir.symbols.impl.FirTypeParameterSymbol
 import org.jetbrains.kotlin.fir.types.FirTypeRef
@@ -243,7 +244,7 @@ class Fir2IrClassifierStorage(
             }
             if (index < 0) {
                 val parent = simpleCachedParameter.parent
-                if (parent !is IrSimpleFunction || parent.returnType == typeConverter.unitType) {
+                if (parent !is IrSimpleFunction || parent.returnType == irBuiltIns.unitType) {
                     return simpleCachedParameter
                 }
             }
@@ -328,6 +329,14 @@ class Fir2IrClassifierStorage(
     fun getIrClassSymbol(firClassSymbol: FirClassSymbol<*>): IrClassSymbol {
         val firClass = firClassSymbol.fir
         getCachedIrClass(firClass)?.let { return symbolTable.referenceClass(it.descriptor) }
+        val builtinClassSymbol = when (firClassSymbol.classId) {
+            StandardClassIds.Any -> irBuiltIns.anyClass
+            else -> null
+        }
+        if (builtinClassSymbol != null && firClass is FirRegularClass) {
+            classCache[firClass] = builtinClassSymbol.owner
+            return symbolTable.referenceClass(builtinClassSymbol.descriptor)
+        }
         // TODO: remove all this code and change to unbound symbol creation
         val irClass = createIrClass(firClass)
         if (firClass is FirAnonymousObject || firClass is FirRegularClass && firClass.visibility == Visibilities.LOCAL) {
diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrConverter.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrConverter.kt
index 9d13cf573e2..2dcae9e6ec7 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrConverter.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrConverter.kt
@@ -40,7 +40,7 @@ class Fir2IrConverter(
         processClassMembers(regularClass, irClass)
     }
 
-    fun registerFileAndClasses(file: FirFile) {
+    fun registerFileAndClasses(file: FirFile): IrFile {
         val irFile = IrFileImpl(
             sourceManager.getOrCreateFileEntry(file.psi as KtFile),
             moduleDescriptor.getPackage(file.packageFqName).fragments.first()
@@ -51,6 +51,7 @@ class Fir2IrConverter(
                 registerClassAndNestedClasses(it, irFile)
             }
         }
+        return irFile
     }
 
     fun processClassHeaders(file: FirFile) {
@@ -175,13 +176,17 @@ class Fir2IrConverter(
             components.declarationStorage = declarationStorage
             components.classifierStorage = classifierStorage
             components.typeConverter = typeConverter
-            typeConverter.initBuiltinTypes()
             val irFiles = mutableListOf<IrFile>()
 
             val converter = Fir2IrConverter(moduleDescriptor, sourceManager, components)
             for (firFile in firFiles) {
-                converter.registerFileAndClasses(firFile)
+                irFiles += converter.registerFileAndClasses(firFile)
             }
+            val irModuleFragment = IrModuleFragmentImpl(moduleDescriptor, builtIns, irFiles)
+            val externalDependenciesGenerator = ExternalDependenciesGenerator(
+                symbolTable, generateTypicalIrProviderList(irModuleFragment.descriptor, builtIns, symbolTable)
+            )
+            externalDependenciesGenerator.generateUnboundSymbolsAsDependencies()
             for (firFile in firFiles) {
                 converter.processClassHeaders(firFile)
             }
@@ -194,22 +199,10 @@ class Fir2IrConverter(
                 val irFile = firFile.accept(fir2irVisitor, null) as IrFile
                 val fileEntry = sourceManager.getOrCreateFileEntry(firFile.psi as KtFile)
                 sourceManager.putFileEntry(irFile, fileEntry)
-                irFiles += irFile
             }
 
-            val irModuleFragment = IrModuleFragmentImpl(moduleDescriptor, builtIns, irFiles)
-            generateUnboundSymbolsAsDependencies(irModuleFragment, symbolTable, builtIns)
+            externalDependenciesGenerator.generateUnboundSymbolsAsDependencies()
             return Fir2IrResult(irModuleFragment, symbolTable, sourceManager)
         }
-
-        private fun generateUnboundSymbolsAsDependencies(
-            irModule: IrModuleFragment,
-            symbolTable: SymbolTable,
-            builtIns: IrBuiltIns
-        ) {
-            // TODO: provide StubGeneratorExtensions for correct lazy stub IR generation on JVM
-            ExternalDependenciesGenerator(symbolTable, generateTypicalIrProviderList(irModule.descriptor, builtIns, symbolTable))
-                .generateUnboundSymbolsAsDependencies()
-        }
     }
 }
\ No newline at end of file
diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrDeclarationStorage.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrDeclarationStorage.kt
index 1bb975df05c..7d5199dcf5f 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrDeclarationStorage.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrDeclarationStorage.kt
@@ -19,6 +19,7 @@ import org.jetbrains.kotlin.fir.render
 import org.jetbrains.kotlin.fir.resolve.*
 import org.jetbrains.kotlin.fir.scopes.impl.FirClassSubstitutionScope
 import org.jetbrains.kotlin.fir.symbols.FirBasedSymbol
+import org.jetbrains.kotlin.fir.symbols.StandardClassIds
 import org.jetbrains.kotlin.fir.symbols.impl.*
 import org.jetbrains.kotlin.fir.types.ConeKotlinType
 import org.jetbrains.kotlin.fir.types.FirTypeRef
@@ -33,6 +34,7 @@ import org.jetbrains.kotlin.ir.expressions.impl.IrErrorExpressionImpl
 import org.jetbrains.kotlin.ir.expressions.impl.IrExpressionBodyImpl
 import org.jetbrains.kotlin.ir.symbols.*
 import org.jetbrains.kotlin.ir.types.IrType
+import org.jetbrains.kotlin.ir.util.constructors
 import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
@@ -431,7 +433,7 @@ class Fir2IrDeclarationStorage(
             propertyAccessor?.psi?.endOffset ?: endOffset,
             origin, descriptor
         ) { symbol ->
-            val accessorReturnType = if (isSetter) typeConverter.unitType else propertyType
+            val accessorReturnType = if (isSetter) irBuiltIns.unitType else propertyType
             IrFunctionImpl(
                 startOffset, endOffset, origin, symbol,
                 Name.special("<$prefix-${correspondingProperty.name}>"),
@@ -650,6 +652,16 @@ class Fir2IrDeclarationStorage(
     fun getIrConstructorSymbol(firConstructorSymbol: FirConstructorSymbol): IrConstructorSymbol {
         val firConstructor = firConstructorSymbol.fir
         getCachedIrConstructor(firConstructor)?.let { return symbolTable.referenceConstructor(it.descriptor) }
+        val builtinParent = when (firConstructorSymbol.callableId.classId) {
+            StandardClassIds.Any -> irBuiltIns.anyClass
+            else -> null
+        }
+        if (builtinParent != null) {
+            val constructorSymbol = builtinParent.constructors.first()
+            constructorCache[firConstructor] = constructorSymbol.owner
+            return symbolTable.referenceConstructor(constructorSymbol.descriptor)
+        }
+
         val irParent = findIrParent(firConstructor) as IrClass
         val parentOrigin = (irParent as? IrDeclaration)?.origin ?: IrDeclarationOrigin.DEFINED
         val irDeclaration = createIrConstructor(firConstructor, irParent, origin = parentOrigin).apply {
diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrTypeConverter.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrTypeConverter.kt
index 8b354bb3276..499240700a9 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrTypeConverter.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrTypeConverter.kt
@@ -8,7 +8,8 @@ package org.jetbrains.kotlin.fir.backend
 import org.jetbrains.kotlin.fir.resolve.toSymbol
 import org.jetbrains.kotlin.fir.symbols.StandardClassIds
 import org.jetbrains.kotlin.fir.types.*
-import org.jetbrains.kotlin.ir.symbols.IrClassifierSymbol
+import org.jetbrains.kotlin.fir.types.impl.*
+import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
 import org.jetbrains.kotlin.ir.types.IrType
 import org.jetbrains.kotlin.ir.types.IrTypeArgument
 import org.jetbrains.kotlin.ir.types.impl.IrSimpleTypeImpl
@@ -20,30 +21,59 @@ import org.jetbrains.kotlin.types.Variance
 class Fir2IrTypeConverter(
     private val components: Fir2IrComponents
 ) : Fir2IrComponents by components {
-    lateinit var nothingType: IrType
-    lateinit var unitType: IrType
-    lateinit var booleanType: IrType
-    lateinit var stringType: IrType
+    private val classIdToSymbolMap = mapOf(
+        StandardClassIds.Nothing to irBuiltIns.nothingClass,
+        StandardClassIds.Unit to irBuiltIns.unitClass,
+        StandardClassIds.Boolean to irBuiltIns.booleanClass,
+        StandardClassIds.String to irBuiltIns.stringClass,
+        StandardClassIds.Any to irBuiltIns.anyClass,
+        StandardClassIds.Long to irBuiltIns.longClass,
+        StandardClassIds.Int to irBuiltIns.intClass,
+        StandardClassIds.Short to irBuiltIns.shortClass,
+        StandardClassIds.Byte to irBuiltIns.byteClass,
+        StandardClassIds.Float to irBuiltIns.floatClass,
+        StandardClassIds.Double to irBuiltIns.doubleClass,
+        StandardClassIds.Char to irBuiltIns.charClass,
+        StandardClassIds.Array to irBuiltIns.arrayClass
+    )
 
-    fun initBuiltinTypes() {
-        nothingType = session.builtinTypes.nothingType.toIrType()
-        unitType = session.builtinTypes.unitType.toIrType()
-        booleanType = session.builtinTypes.booleanType.toIrType()
-        stringType = session.builtinTypes.stringType.toIrType()
-    }
+    private val classIdToTypeMap = mapOf(
+        StandardClassIds.Nothing to irBuiltIns.nothingType,
+        StandardClassIds.Unit to irBuiltIns.unitType,
+        StandardClassIds.Boolean to irBuiltIns.booleanType,
+        StandardClassIds.String to irBuiltIns.stringType,
+        StandardClassIds.Any to irBuiltIns.anyType,
+        StandardClassIds.Long to irBuiltIns.longType,
+        StandardClassIds.Int to irBuiltIns.intType,
+        StandardClassIds.Short to irBuiltIns.shortType,
+        StandardClassIds.Byte to irBuiltIns.byteType,
+        StandardClassIds.Float to irBuiltIns.floatType,
+        StandardClassIds.Double to irBuiltIns.doubleType,
+        StandardClassIds.Char to irBuiltIns.charType
+    )
 
     fun FirTypeRef.toIrType(typeContext: ConversionTypeContext = ConversionTypeContext.DEFAULT): IrType {
-        if (this !is FirResolvedTypeRef) {
-            return createErrorType()
+        return when (this) {
+            !is FirResolvedTypeRef -> createErrorType()
+            !is FirImplicitBuiltinTypeRef -> type.toIrType(typeContext)
+            is FirImplicitNothingTypeRef -> irBuiltIns.nothingType
+            is FirImplicitUnitTypeRef -> irBuiltIns.unitType
+            is FirImplicitBooleanTypeRef -> irBuiltIns.booleanType
+            is FirImplicitStringTypeRef -> irBuiltIns.stringType
+            is FirImplicitAnyTypeRef -> irBuiltIns.anyType
+            is FirImplicitIntTypeRef -> irBuiltIns.intType
+            is FirImplicitNullableAnyTypeRef -> irBuiltIns.anyNType
+            is FirImplicitNullableNothingTypeRef -> irBuiltIns.nothingNType
+            else -> type.toIrType(typeContext)
         }
-        return type.toIrType(typeContext)
     }
 
     fun ConeKotlinType.toIrType(typeContext: ConversionTypeContext = ConversionTypeContext.DEFAULT): IrType {
         return when (this) {
             is ConeKotlinErrorType -> createErrorType()
             is ConeLookupTagBasedType -> {
-                val irSymbol = getArrayType(this.classId) ?: run {
+                val classId = this.classId
+                val irSymbol = getBuiltInClassSymbol(classId) ?: run {
                     val firSymbol = this.lookupTag.toSymbol(session) ?: return createErrorType()
                     firSymbol.toSymbol(session, classifierStorage, typeContext)
                 }
@@ -91,22 +121,14 @@ class Fir2IrTypeConverter(
         }
     }
 
-    private fun getArrayType(classId: ClassId?): IrClassifierSymbol? {
-        if (classId == StandardClassIds.Array) {
-            return irBuiltIns.arrayClass
-        }
+    private fun getArrayClassSymbol(classId: ClassId?): IrClassSymbol? {
         val primitiveId = StandardClassIds.elementTypeByPrimitiveArrayType[classId] ?: return null
-        val irType = when (primitiveId) {
-            StandardClassIds.Boolean -> irBuiltIns.booleanType
-            StandardClassIds.Byte -> irBuiltIns.byteType
-            StandardClassIds.Char -> irBuiltIns.charType
-            StandardClassIds.Double -> irBuiltIns.doubleType
-            StandardClassIds.Float -> irBuiltIns.floatType
-            StandardClassIds.Int -> irBuiltIns.intType
-            StandardClassIds.Long -> irBuiltIns.longType
-            StandardClassIds.Short -> irBuiltIns.shortType
-            else -> throw AssertionError("Strange primitiveId $primitiveId from array: $classId")
-        }
-        return irBuiltIns.primitiveArrayForType.getValue(irType)
+        val irType = classIdToTypeMap[primitiveId]
+        return irBuiltIns.primitiveArrayForType[irType]
+            ?: throw AssertionError("Strange primitiveId $primitiveId from array: $classId")
+    }
+
+    private fun getBuiltInClassSymbol(classId: ClassId?): IrClassSymbol? {
+        return classIdToSymbolMap[classId] ?: getArrayClassSymbol(classId)
     }
 }
\ No newline at end of file
diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrVisitor.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrVisitor.kt
index 6175d2f9fc3..42f174650df 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrVisitor.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/Fir2IrVisitor.kt
@@ -234,7 +234,7 @@ class Fir2IrVisitor(
             val result = returnExpression.result
             val descriptor = irTarget.descriptor
             IrReturnImpl(
-                startOffset, endOffset, typeConverter.nothingType,
+                startOffset, endOffset, irBuiltIns.nothingType,
                 when (descriptor) {
                     is ClassConstructorDescriptor -> symbolTable.referenceConstructor(descriptor)
                     else -> symbolTable.referenceSimpleFunction(descriptor)
@@ -396,7 +396,7 @@ class Fir2IrVisitor(
             is FirBlock -> expression.convertToIrExpressionOrBlock()
             is FirUnitExpression -> expression.convertWithOffsets { startOffset, endOffset ->
                 IrGetObjectValueImpl(
-                    startOffset, endOffset, this.typeConverter.unitType,
+                    startOffset, endOffset, irBuiltIns.unitType,
                     this.symbolTable.referenceClass(this.irBuiltIns.builtIns.unit)
                 )
             }
@@ -434,7 +434,7 @@ class Fir2IrVisitor(
                 startOffset, endOffset,
                 if (irStatements.isNotEmpty()) {
                     irStatements.filterNotNull().takeIf { it.isNotEmpty() }
-                        ?: listOf(IrBlockImpl(startOffset, endOffset, this.typeConverter.unitType, null, emptyList()))
+                        ?: listOf(IrBlockImpl(startOffset, endOffset, irBuiltIns.unitType, null, emptyList()))
                 } else {
                     emptyList()
                 }
@@ -450,7 +450,7 @@ class Fir2IrVisitor(
             }
         }
         val type =
-            (statements.lastOrNull() as? FirExpression)?.typeRef?.toIrType() ?: typeConverter.unitType
+            (statements.lastOrNull() as? FirExpression)?.typeRef?.toIrType() ?: irBuiltIns.unitType
         return convertWithOffsets { startOffset, endOffset ->
             IrBlockImpl(
                 startOffset, endOffset, type, origin,
@@ -522,7 +522,7 @@ class Fir2IrVisitor(
             val condition = whenBranch.condition
             val irResult = convertToIrExpression(whenBranch.result)
             if (condition is FirElseIfTrueCondition) {
-                IrElseBranchImpl(IrConstImpl.boolean(irResult.startOffset, irResult.endOffset, typeConverter.booleanType, true), irResult)
+                IrElseBranchImpl(IrConstImpl.boolean(irResult.startOffset, irResult.endOffset, irBuiltIns.booleanType, true), irResult)
             } else {
                 IrBranchImpl(startOffset, endOffset, convertToIrExpression(condition), irResult)
             }
@@ -541,7 +541,7 @@ class Fir2IrVisitor(
     override fun visitDoWhileLoop(doWhileLoop: FirDoWhileLoop, data: Any?): IrElement {
         return doWhileLoop.convertWithOffsets { startOffset, endOffset ->
             IrDoWhileLoopImpl(
-                startOffset, endOffset, typeConverter.unitType,
+                startOffset, endOffset, irBuiltIns.unitType,
                 IrStatementOrigin.DO_WHILE_LOOP
             ).apply {
                 loopMap[doWhileLoop] = this
@@ -557,7 +557,7 @@ class Fir2IrVisitor(
         return whileLoop.convertWithOffsets { startOffset, endOffset ->
             val origin = if (whileLoop.psi is KtForExpression) IrStatementOrigin.FOR_LOOP_INNER_WHILE
             else IrStatementOrigin.WHILE_LOOP
-            IrWhileLoopImpl(startOffset, endOffset, typeConverter.unitType, origin).apply {
+            IrWhileLoopImpl(startOffset, endOffset, irBuiltIns.unitType, origin).apply {
                 loopMap[whileLoop] = this
                 label = whileLoop.label?.name
                 condition = convertToIrExpression(whileLoop.condition)
@@ -574,7 +574,7 @@ class Fir2IrVisitor(
             val firLoop = target.labeledElement
             val irLoop = loopMap[firLoop]
             if (irLoop == null) {
-                IrErrorExpressionImpl(startOffset, endOffset, typeConverter.nothingType, "Unbound loop: ${render()}")
+                IrErrorExpressionImpl(startOffset, endOffset, irBuiltIns.nothingType, "Unbound loop: ${render()}")
             } else {
                 f(startOffset, endOffset, irLoop).apply {
                     label = irLoop.label.takeIf { target.labelName != null }
@@ -585,19 +585,19 @@ class Fir2IrVisitor(
 
     override fun visitBreakExpression(breakExpression: FirBreakExpression, data: Any?): IrElement {
         return breakExpression.convertJumpWithOffsets { startOffset, endOffset, irLoop ->
-            IrBreakImpl(startOffset, endOffset, typeConverter.nothingType, irLoop)
+            IrBreakImpl(startOffset, endOffset, irBuiltIns.nothingType, irLoop)
         }
     }
 
     override fun visitContinueExpression(continueExpression: FirContinueExpression, data: Any?): IrElement {
         return continueExpression.convertJumpWithOffsets { startOffset, endOffset, irLoop ->
-            IrContinueImpl(startOffset, endOffset, typeConverter.nothingType, irLoop)
+            IrContinueImpl(startOffset, endOffset, irBuiltIns.nothingType, irLoop)
         }
     }
 
     override fun visitThrowExpression(throwExpression: FirThrowExpression, data: Any?): IrElement {
         return throwExpression.convertWithOffsets { startOffset, endOffset ->
-            IrThrowImpl(startOffset, endOffset, typeConverter.nothingType, convertToIrExpression(throwExpression.exception))
+            IrThrowImpl(startOffset, endOffset, irBuiltIns.nothingType, convertToIrExpression(throwExpression.exception))
         }
     }
 
@@ -638,7 +638,7 @@ class Fir2IrVisitor(
             return primitiveOp2(
                 startOffset, endOffset,
                 symbol!!,
-                typeConverter.booleanType,
+                irBuiltIns.booleanType,
                 origin,
                 visitFunctionCall(comparisonExpression.compareToCall, null),
                 IrConstImpl.int(startOffset, endOffset, irBuiltIns.intType, 0)
@@ -666,7 +666,7 @@ class Fir2IrVisitor(
         val (symbol, origin) = getSymbolAndOriginForComparison(operation, simpleType.classifierOrFail)
 
         return primitiveOp2(
-            startOffset, endOffset, symbol!!, typeConverter.booleanType, origin,
+            startOffset, endOffset, symbol!!, irBuiltIns.booleanType, origin,
             convertToIrExpression(comparisonExpression.left), convertToIrExpression(comparisonExpression.right)
         )
     }
@@ -688,11 +688,11 @@ class Fir2IrVisitor(
         startOffset: Int, endOffset: Int, operation: FirOperation, arguments: List<FirExpression>
     ): IrExpression {
         val (type, symbol, origin) = when (operation) {
-            FirOperation.EQ -> Triple(typeConverter.booleanType, irBuiltIns.eqeqSymbol, IrStatementOrigin.EQEQ)
-            FirOperation.NOT_EQ -> Triple(typeConverter.booleanType, irBuiltIns.eqeqSymbol, IrStatementOrigin.EXCLEQ)
-            FirOperation.IDENTITY -> Triple(typeConverter.booleanType, irBuiltIns.eqeqeqSymbol, IrStatementOrigin.EQEQEQ)
-            FirOperation.NOT_IDENTITY -> Triple(typeConverter.booleanType, irBuiltIns.eqeqeqSymbol, IrStatementOrigin.EXCLEQEQ)
-            FirOperation.EXCL -> Triple(typeConverter.booleanType, irBuiltIns.booleanNotSymbol, IrStatementOrigin.EXCL)
+            FirOperation.EQ -> Triple(irBuiltIns.booleanType, irBuiltIns.eqeqSymbol, IrStatementOrigin.EQEQ)
+            FirOperation.NOT_EQ -> Triple(irBuiltIns.booleanType, irBuiltIns.eqeqSymbol, IrStatementOrigin.EXCLEQ)
+            FirOperation.IDENTITY -> Triple(irBuiltIns.booleanType, irBuiltIns.eqeqeqSymbol, IrStatementOrigin.EQEQEQ)
+            FirOperation.NOT_IDENTITY -> Triple(irBuiltIns.booleanType, irBuiltIns.eqeqeqSymbol, IrStatementOrigin.EXCLEQEQ)
+            FirOperation.EXCL -> Triple(irBuiltIns.booleanType, irBuiltIns.booleanNotSymbol, IrStatementOrigin.EXCL)
             FirOperation.LT, FirOperation.GT,
             FirOperation.LT_EQ, FirOperation.GT_EQ,
             FirOperation.OTHER, FirOperation.ASSIGN, FirOperation.PLUS_ASSIGN,
@@ -713,7 +713,7 @@ class Fir2IrVisitor(
             )
         }
         if (operation !in NEGATED_OPERATIONS) return result
-        return primitiveOp1(startOffset, endOffset, irBuiltIns.booleanNotSymbol, typeConverter.booleanType, origin, result)
+        return primitiveOp1(startOffset, endOffset, irBuiltIns.booleanNotSymbol, irBuiltIns.booleanType, origin, result)
     }
 
     override fun visitOperatorCall(operatorCall: FirOperatorCall, data: Any?): IrElement {
@@ -725,7 +725,7 @@ class Fir2IrVisitor(
     override fun visitStringConcatenationCall(stringConcatenationCall: FirStringConcatenationCall, data: Any?): IrElement {
         return stringConcatenationCall.convertWithOffsets { startOffset, endOffset ->
             IrStringConcatenationImpl(
-                startOffset, endOffset, typeConverter.stringType,
+                startOffset, endOffset, irBuiltIns.stringType,
                 stringConcatenationCall.arguments.map { convertToIrExpression(it) }
             )
         }
@@ -735,8 +735,8 @@ class Fir2IrVisitor(
         return typeOperatorCall.convertWithOffsets { startOffset, endOffset ->
             val irTypeOperand = typeOperatorCall.conversionTypeRef.toIrType()
             val (irType, irTypeOperator) = when (typeOperatorCall.operation) {
-                FirOperation.IS -> typeConverter.booleanType to IrTypeOperator.INSTANCEOF
-                FirOperation.NOT_IS -> typeConverter.booleanType to IrTypeOperator.NOT_INSTANCEOF
+                FirOperation.IS -> irBuiltIns.booleanType to IrTypeOperator.INSTANCEOF
+                FirOperation.NOT_IS -> irBuiltIns.booleanType to IrTypeOperator.NOT_INSTANCEOF
                 FirOperation.AS -> irTypeOperand to IrTypeOperator.CAST
                 FirOperation.SAFE_AS -> irTypeOperand.makeNullable() to IrTypeOperator.SAFE_CAST
                 else -> TODO("Should not be here: ${typeOperatorCall.operation} in type operator call")
@@ -794,7 +794,7 @@ class Fir2IrVisitor(
     override fun visitAugmentedArraySetCall(augmentedArraySetCall: FirAugmentedArraySetCall, data: Any?): IrElement {
         return augmentedArraySetCall.convertWithOffsets { startOffset, endOffset ->
             IrErrorCallExpressionImpl(
-                startOffset, endOffset, typeConverter.unitType,
+                startOffset, endOffset, irBuiltIns.unitType,
                 "FirArraySetCall (resolve isn't supported yet)"
             )
         }
diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/CallGenerator.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/CallGenerator.kt
index 53cac546cb2..ff6dc55bc71 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/CallGenerator.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/CallGenerator.kt
@@ -87,7 +87,7 @@ internal class CallGenerator(
     }
 
     fun convertToIrSetCall(variableAssignment: FirVariableAssignment): IrExpression {
-        val type = typeConverter.unitType
+        val type = irBuiltIns.unitType
         val calleeReference = variableAssignment.calleeReference
         val symbol = calleeReference.toSymbol(session, classifierStorage, declarationStorage)
         val origin = IrStatementOrigin.EQ
diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/ClassMemberGenerator.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/ClassMemberGenerator.kt
index fd0849550c6..42b9a6ed35f 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/ClassMemberGenerator.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/generators/ClassMemberGenerator.kt
@@ -215,13 +215,13 @@ internal class ClassMemberGenerator(
                             startOffset, endOffset,
                             listOf(
                                 if (isSetter) {
-                                    IrSetFieldImpl(startOffset, endOffset, fieldSymbol, typeConverter.unitType).apply {
+                                    IrSetFieldImpl(startOffset, endOffset, fieldSymbol, irBuiltIns.unitType).apply {
                                         setReceiver(declaration)
                                         value = IrGetValueImpl(startOffset, endOffset, propertyType, valueParameters.first().symbol)
                                     }
                                 } else {
                                     IrReturnImpl(
-                                        startOffset, endOffset, typeConverter.nothingType, symbol,
+                                        startOffset, endOffset, irBuiltIns.nothingType, symbol,
                                         IrGetFieldImpl(startOffset, endOffset, fieldSymbol, propertyType).setReceiver(declaration)
                                     )
                                 }
diff --git a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/LowerUtils.kt b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/LowerUtils.kt
index 960c141469b..08ece5dbeee 100644
--- a/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/LowerUtils.kt
+++ b/compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/LowerUtils.kt
@@ -185,7 +185,7 @@ fun IrConstructor.callsSuper(irBuiltIns: IrBuiltIns): Boolean {
             else if (delegatingClass.descriptor != constructedClass.descriptor)
                 throw AssertionError(
                     "Expected either call to another constructor of the class being constructed or" +
-                            " call to super class constructor. But was: $delegatingClass"
+                            " call to super class constructor. But was: $delegatingClass with '${delegatingClass.name}' name"
                 )
         }
     })
diff --git a/compiler/testData/codegen/box/assert/alwaysDisable.kt b/compiler/testData/codegen/box/assert/alwaysDisable.kt
index 1c9c2e96078..b3039412e24 100644
--- a/compiler/testData/codegen/box/assert/alwaysDisable.kt
+++ b/compiler/testData/codegen/box/assert/alwaysDisable.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // IGNORE_BACKEND: NATIVE
 // IGNORE_BACKEND: JS_IR
 // IGNORE_BACKEND: JS
diff --git a/compiler/testData/codegen/box/assert/alwaysEnable.kt b/compiler/testData/codegen/box/assert/alwaysEnable.kt
index f328151fb13..68555d9a859 100644
--- a/compiler/testData/codegen/box/assert/alwaysEnable.kt
+++ b/compiler/testData/codegen/box/assert/alwaysEnable.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // IGNORE_BACKEND: JS_IR
 // IGNORE_BACKEND: JS
 // KOTLIN_CONFIGURATION_FLAGS: ASSERTIONS_MODE=always-enable
diff --git a/compiler/testData/codegen/box/callableReference/bound/captureVarInInitBlock.kt b/compiler/testData/codegen/box/callableReference/bound/captureVarInInitBlock.kt
index 1d5e72d770f..2f443a31dca 100644
--- a/compiler/testData/codegen/box/callableReference/bound/captureVarInInitBlock.kt
+++ b/compiler/testData/codegen/box/callableReference/bound/captureVarInInitBlock.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 
 fun bar(b: ()-> Unit) { b() }
 
diff --git a/compiler/testData/codegen/box/callableReference/bound/captureVarInPropertyInit.kt b/compiler/testData/codegen/box/callableReference/bound/captureVarInPropertyInit.kt
index 60a1ca79a5c..7a29b25c7e3 100644
--- a/compiler/testData/codegen/box/callableReference/bound/captureVarInPropertyInit.kt
+++ b/compiler/testData/codegen/box/callableReference/bound/captureVarInPropertyInit.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 
 fun bar(b: ()-> Unit) { b() }
 
diff --git a/compiler/testData/codegen/box/casts/as.kt b/compiler/testData/codegen/box/casts/as.kt
index 44f1e1f0954..d3bb682236b 100644
--- a/compiler/testData/codegen/box/casts/as.kt
+++ b/compiler/testData/codegen/box/casts/as.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
diff --git a/compiler/testData/codegen/box/casts/asSafe.kt b/compiler/testData/codegen/box/casts/asSafe.kt
index 5bf72a98bca..2622e460551 100644
--- a/compiler/testData/codegen/box/casts/asSafe.kt
+++ b/compiler/testData/codegen/box/casts/asSafe.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
diff --git a/compiler/testData/codegen/box/casts/is.kt b/compiler/testData/codegen/box/casts/is.kt
index 397bb001dba..54cda6f6af6 100644
--- a/compiler/testData/codegen/box/casts/is.kt
+++ b/compiler/testData/codegen/box/casts/is.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
diff --git a/compiler/testData/codegen/box/casts/notIs.kt b/compiler/testData/codegen/box/casts/notIs.kt
index f806aa1d435..a2c6110adcb 100644
--- a/compiler/testData/codegen/box/casts/notIs.kt
+++ b/compiler/testData/codegen/box/casts/notIs.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
diff --git a/compiler/testData/codegen/box/classes/kt1120.kt b/compiler/testData/codegen/box/classes/kt1120.kt
index c8d315ceffb..d5b5a8685a6 100644
--- a/compiler/testData/codegen/box/classes/kt1120.kt
+++ b/compiler/testData/codegen/box/classes/kt1120.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // IGNORE_BACKEND: JS_IR
 // Won't ever work with JS backend.
 // TODO: Consider rewriting this test without using threads, since the issue is not about threads at all.
diff --git a/compiler/testData/codegen/box/classes/kt1157.kt b/compiler/testData/codegen/box/classes/kt1157.kt
index cd78bd9209e..126889d5110 100644
--- a/compiler/testData/codegen/box/classes/kt1157.kt
+++ b/compiler/testData/codegen/box/classes/kt1157.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 public object SomeClass {
     private val work = object : Runnable {
         override fun run() {
diff --git a/compiler/testData/codegen/box/classes/kt1578.kt b/compiler/testData/codegen/box/classes/kt1578.kt
index 45115b8ddad..e485684b4da 100644
--- a/compiler/testData/codegen/box/classes/kt1578.kt
+++ b/compiler/testData/codegen/box/classes/kt1578.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box() : String {
     var i = 0
         {
diff --git a/compiler/testData/codegen/box/classes/kt2532.kt b/compiler/testData/codegen/box/classes/kt2532.kt
index d06b6d2e020..24d12e9f884 100644
--- a/compiler/testData/codegen/box/classes/kt2532.kt
+++ b/compiler/testData/codegen/box/classes/kt2532.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 package foo
 
 interface B {
diff --git a/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/localCapturedInAnonymousObjectInLocalClass.kt b/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/localCapturedInAnonymousObjectInLocalClass.kt
index 8e6ff6bdb34..b2670e3b1eb 100644
--- a/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/localCapturedInAnonymousObjectInLocalClass.kt
+++ b/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/localCapturedInAnonymousObjectInLocalClass.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 interface Callback {
     fun invoke(): String
 }
diff --git a/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/localCapturedInAnonymousObjectInLocalClass2.kt b/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/localCapturedInAnonymousObjectInLocalClass2.kt
index 57336b36a26..566809f3cb3 100644
--- a/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/localCapturedInAnonymousObjectInLocalClass2.kt
+++ b/compiler/testData/codegen/box/closures/captureInSuperConstructorCall/localCapturedInAnonymousObjectInLocalClass2.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 interface Callback {
     fun invoke(): String
 }
diff --git a/compiler/testData/codegen/box/closures/captureOuterProperty/kt4656.kt b/compiler/testData/codegen/box/closures/captureOuterProperty/kt4656.kt
index 17fc0572471..c3b93ff7efd 100644
--- a/compiler/testData/codegen/box/closures/captureOuterProperty/kt4656.kt
+++ b/compiler/testData/codegen/box/closures/captureOuterProperty/kt4656.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 //KT-4656 Wrong capturing a function literal variable
 
 fun box(): String {
diff --git a/compiler/testData/codegen/box/closures/capturedVarsOptimization/capturedInInlineOnlyIncrDecr.kt b/compiler/testData/codegen/box/closures/capturedVarsOptimization/capturedInInlineOnlyIncrDecr.kt
index fef68b2665d..c8d5c31083e 100644
--- a/compiler/testData/codegen/box/closures/capturedVarsOptimization/capturedInInlineOnlyIncrDecr.kt
+++ b/compiler/testData/codegen/box/closures/capturedVarsOptimization/capturedInInlineOnlyIncrDecr.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME
 
 fun box(): String {
diff --git a/compiler/testData/codegen/box/closures/capturedVarsOptimization/capturedVarsOfSize2.kt b/compiler/testData/codegen/box/closures/capturedVarsOptimization/capturedVarsOfSize2.kt
index 2044cc2c58a..10f31cbc43a 100644
--- a/compiler/testData/codegen/box/closures/capturedVarsOptimization/capturedVarsOfSize2.kt
+++ b/compiler/testData/codegen/box/closures/capturedVarsOptimization/capturedVarsOfSize2.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME
 
 fun box(): String {
diff --git a/compiler/testData/codegen/box/closures/capturedVarsOptimization/kt17200.kt b/compiler/testData/codegen/box/closures/capturedVarsOptimization/kt17200.kt
index c437cb2fbff..0d223fc9f97 100644
--- a/compiler/testData/codegen/box/closures/capturedVarsOptimization/kt17200.kt
+++ b/compiler/testData/codegen/box/closures/capturedVarsOptimization/kt17200.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 inline fun inlineCall(action: () -> Unit) {
     action()
 }
diff --git a/compiler/testData/codegen/box/closures/capturedVarsOptimization/sharedSlotsWithCapturedVars.kt b/compiler/testData/codegen/box/closures/capturedVarsOptimization/sharedSlotsWithCapturedVars.kt
index f5da4c81b7b..09ed429ede5 100644
--- a/compiler/testData/codegen/box/closures/capturedVarsOptimization/sharedSlotsWithCapturedVars.kt
+++ b/compiler/testData/codegen/box/closures/capturedVarsOptimization/sharedSlotsWithCapturedVars.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME
 
 fun box(): String {
diff --git a/compiler/testData/codegen/box/closures/closureOnTopLevel1.kt b/compiler/testData/codegen/box/closures/closureOnTopLevel1.kt
index c760579db0f..16013731c04 100644
--- a/compiler/testData/codegen/box/closures/closureOnTopLevel1.kt
+++ b/compiler/testData/codegen/box/closures/closureOnTopLevel1.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
diff --git a/compiler/testData/codegen/box/closures/closureOnTopLevel2.kt b/compiler/testData/codegen/box/closures/closureOnTopLevel2.kt
index 73b5b3f11b2..c8ec18dab8f 100644
--- a/compiler/testData/codegen/box/closures/closureOnTopLevel2.kt
+++ b/compiler/testData/codegen/box/closures/closureOnTopLevel2.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
diff --git a/compiler/testData/codegen/box/closures/refsAreSerializable.kt b/compiler/testData/codegen/box/closures/refsAreSerializable.kt
index f41ebd3d701..05c2060bada 100644
--- a/compiler/testData/codegen/box/closures/refsAreSerializable.kt
+++ b/compiler/testData/codegen/box/closures/refsAreSerializable.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 import java.io.*
diff --git a/compiler/testData/codegen/box/constructorCall/nonLocalReturnInConstructorArguments.kt b/compiler/testData/codegen/box/constructorCall/nonLocalReturnInConstructorArguments.kt
index 56bd5bf0edb..a2c8602af59 100644
--- a/compiler/testData/codegen/box/constructorCall/nonLocalReturnInConstructorArguments.kt
+++ b/compiler/testData/codegen/box/constructorCall/nonLocalReturnInConstructorArguments.kt
@@ -1,5 +1,4 @@
 // !LANGUAGE: -NormalizeConstructorCalls
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 // WITH_RUNTIME
 // FILE: test.kt
diff --git a/compiler/testData/codegen/box/contracts/exactlyOnceNotInline.kt b/compiler/testData/codegen/box/contracts/exactlyOnceNotInline.kt
index 2830156b1be..f7b19d6e890 100644
--- a/compiler/testData/codegen/box/contracts/exactlyOnceNotInline.kt
+++ b/compiler/testData/codegen/box/contracts/exactlyOnceNotInline.kt
@@ -1,5 +1,4 @@
 // !USE_EXPERIMENTAL: kotlin.contracts.ExperimentalContracts
-// IGNORE_BACKEND_FIR: JVM_IR
 // IGNORE_BACKEND: NATIVE
 
 import kotlin.contracts.*
diff --git a/compiler/testData/codegen/box/controlStructures/kt2597.kt b/compiler/testData/codegen/box/controlStructures/kt2597.kt
index 4c383b38fce..af5af144a86 100644
--- a/compiler/testData/codegen/box/controlStructures/kt2597.kt
+++ b/compiler/testData/codegen/box/controlStructures/kt2597.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box(): String {
     var i = 0
     {
diff --git a/compiler/testData/codegen/box/controlStructures/tryCatchInExpressions/expectException.kt b/compiler/testData/codegen/box/controlStructures/tryCatchInExpressions/expectException.kt
index ea3e1f51116..63bd4900c12 100644
--- a/compiler/testData/codegen/box/controlStructures/tryCatchInExpressions/expectException.kt
+++ b/compiler/testData/codegen/box/controlStructures/tryCatchInExpressions/expectException.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 public inline fun fails(block: () -> Unit): Throwable? {
     var thrown: Throwable? = null
     try {
diff --git a/compiler/testData/codegen/box/controlStructures/tryCatchInExpressions/kt8608.kt b/compiler/testData/codegen/box/controlStructures/tryCatchInExpressions/kt8608.kt
index 9da057f8400..1d0b92b2c09 100644
--- a/compiler/testData/codegen/box/controlStructures/tryCatchInExpressions/kt8608.kt
+++ b/compiler/testData/codegen/box/controlStructures/tryCatchInExpressions/kt8608.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 interface Callable {
     fun call(b: Boolean)
 }
diff --git a/compiler/testData/codegen/box/coroutines/kt31784.kt b/compiler/testData/codegen/box/coroutines/kt31784.kt
index 1f79ae151cb..cfd75d5adb0 100644
--- a/compiler/testData/codegen/box/coroutines/kt31784.kt
+++ b/compiler/testData/codegen/box/coroutines/kt31784.kt
@@ -1,5 +1,4 @@
 // !LANGUAGE: +NewInference
-// IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME
 
 @file:OptIn(ExperimentalTypeInference::class)
diff --git a/compiler/testData/codegen/box/coroutines/multiModule/inlineWithJava.kt b/compiler/testData/codegen/box/coroutines/multiModule/inlineWithJava.kt
index aa7c820ff98..733f95a6f2d 100644
--- a/compiler/testData/codegen/box/coroutines/multiModule/inlineWithJava.kt
+++ b/compiler/testData/codegen/box/coroutines/multiModule/inlineWithJava.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 // WITH_COROUTINES
 // WITH_RUNTIME
diff --git a/compiler/testData/codegen/box/delegatedProperty/local/capturedLocalVar.kt b/compiler/testData/codegen/box/delegatedProperty/local/capturedLocalVar.kt
index c721ed2c946..d655e965ab1 100644
--- a/compiler/testData/codegen/box/delegatedProperty/local/capturedLocalVar.kt
+++ b/compiler/testData/codegen/box/delegatedProperty/local/capturedLocalVar.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 package foo
 
 import kotlin.reflect.KProperty
diff --git a/compiler/testData/codegen/box/delegatedProperty/local/capturedLocalVarNoInline.kt b/compiler/testData/codegen/box/delegatedProperty/local/capturedLocalVarNoInline.kt
index 54b1ff1f3e1..8ac07a3f364 100644
--- a/compiler/testData/codegen/box/delegatedProperty/local/capturedLocalVarNoInline.kt
+++ b/compiler/testData/codegen/box/delegatedProperty/local/capturedLocalVarNoInline.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 package foo
 
 import kotlin.reflect.KProperty
diff --git a/compiler/testData/codegen/box/delegation/byMiddleInterface.kt b/compiler/testData/codegen/box/delegation/byMiddleInterface.kt
index 1c600f4ad02..5f6256df741 100644
--- a/compiler/testData/codegen/box/delegation/byMiddleInterface.kt
+++ b/compiler/testData/codegen/box/delegation/byMiddleInterface.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // SKIP_JDK6
 // TARGET_BACKEND: JVM
 
diff --git a/compiler/testData/codegen/box/delegation/diamond.kt b/compiler/testData/codegen/box/delegation/diamond.kt
index 7d41b8609d3..8a60bda7ef8 100644
--- a/compiler/testData/codegen/box/delegation/diamond.kt
+++ b/compiler/testData/codegen/box/delegation/diamond.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // SKIP_JDK6
 // TARGET_BACKEND: JVM
 // FILE: Base.java
diff --git a/compiler/testData/codegen/box/delegation/simple.kt b/compiler/testData/codegen/box/delegation/simple.kt
index 149d52b5424..418cea053e1 100644
--- a/compiler/testData/codegen/box/delegation/simple.kt
+++ b/compiler/testData/codegen/box/delegation/simple.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // SKIP_JDK6
 // TARGET_BACKEND: JVM
 // FILE: Base.java
diff --git a/compiler/testData/codegen/box/enum/kt20651b.kt b/compiler/testData/codegen/box/enum/kt20651b.kt
index 2ca5b461c1a..477e3036569 100644
--- a/compiler/testData/codegen/box/enum/kt20651b.kt
+++ b/compiler/testData/codegen/box/enum/kt20651b.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 interface Callback {
     fun invoke(): String
 }
diff --git a/compiler/testData/codegen/box/functions/kt873.kt b/compiler/testData/codegen/box/functions/kt873.kt
index 5382d4ea5ad..21c3dcd3338 100644
--- a/compiler/testData/codegen/box/functions/kt873.kt
+++ b/compiler/testData/codegen/box/functions/kt873.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box() : String {
   val fps  : Double = 1.toDouble()
   var mspf : Long
diff --git a/compiler/testData/codegen/box/functions/localFunction.kt b/compiler/testData/codegen/box/functions/localFunction.kt
index 62d577603a0..b43377b6ab1 100644
--- a/compiler/testData/codegen/box/functions/localFunction.kt
+++ b/compiler/testData/codegen/box/functions/localFunction.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun IntRange.forEach(body : (Int) -> Unit) {
     for(i in this) {
         body(i)
diff --git a/compiler/testData/codegen/box/inlineClasses/kt28585.kt b/compiler/testData/codegen/box/inlineClasses/kt28585.kt
index af35c3ef72c..feaab23ffa2 100644
--- a/compiler/testData/codegen/box/inlineClasses/kt28585.kt
+++ b/compiler/testData/codegen/box/inlineClasses/kt28585.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // KJS_WITH_FULL_RUNTIME
 // !LANGUAGE: +InlineClasses
 // WITH_RUNTIME
diff --git a/compiler/testData/codegen/box/instructions/swap/swapRefToSharedVarInt.kt b/compiler/testData/codegen/box/instructions/swap/swapRefToSharedVarInt.kt
index ca4415b28e0..619bfd3a800 100644
--- a/compiler/testData/codegen/box/instructions/swap/swapRefToSharedVarInt.kt
+++ b/compiler/testData/codegen/box/instructions/swap/swapRefToSharedVarInt.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box(): String {
     var a: Int
     a = 12
diff --git a/compiler/testData/codegen/box/instructions/swap/swapRefToSharedVarLong.kt b/compiler/testData/codegen/box/instructions/swap/swapRefToSharedVarLong.kt
index 13cee4d244e..7340eb15d14 100644
--- a/compiler/testData/codegen/box/instructions/swap/swapRefToSharedVarLong.kt
+++ b/compiler/testData/codegen/box/instructions/swap/swapRefToSharedVarLong.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 //KT-3042 Attempt to split long or double on the stack excepion
 
 fun box(): String {
diff --git a/compiler/testData/codegen/box/ir/closureConversion/mutablePrimitives.kt b/compiler/testData/codegen/box/ir/closureConversion/mutablePrimitives.kt
index f8bb97310a9..314ff34dd37 100644
--- a/compiler/testData/codegen/box/ir/closureConversion/mutablePrimitives.kt
+++ b/compiler/testData/codegen/box/ir/closureConversion/mutablePrimitives.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun testBoolean(v: Boolean): Boolean {
     var value = false
     fun setValue(v: Boolean) {
diff --git a/compiler/testData/codegen/box/multiDecl/VarCapturedInFunctionLiteral.kt b/compiler/testData/codegen/box/multiDecl/VarCapturedInFunctionLiteral.kt
index a33099640c0..e0eb2cb5edd 100644
--- a/compiler/testData/codegen/box/multiDecl/VarCapturedInFunctionLiteral.kt
+++ b/compiler/testData/codegen/box/multiDecl/VarCapturedInFunctionLiteral.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 class A {
     operator fun component1() = 1
     operator fun component2() = 2
diff --git a/compiler/testData/codegen/box/multiDecl/VarCapturedInLocalFunction.kt b/compiler/testData/codegen/box/multiDecl/VarCapturedInLocalFunction.kt
index b2715ff3099..5c2a87c9d65 100644
--- a/compiler/testData/codegen/box/multiDecl/VarCapturedInLocalFunction.kt
+++ b/compiler/testData/codegen/box/multiDecl/VarCapturedInLocalFunction.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 class A {
 }
 
diff --git a/compiler/testData/codegen/box/multiDecl/VarCapturedInObjectLiteral.kt b/compiler/testData/codegen/box/multiDecl/VarCapturedInObjectLiteral.kt
index 0e836751dd0..48534b362c6 100644
--- a/compiler/testData/codegen/box/multiDecl/VarCapturedInObjectLiteral.kt
+++ b/compiler/testData/codegen/box/multiDecl/VarCapturedInObjectLiteral.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 class A {
     operator fun component1() = 1
     operator fun component2() = 2
diff --git a/compiler/testData/codegen/box/nonLocalReturns/localReturnInsideProperty.kt b/compiler/testData/codegen/box/nonLocalReturns/localReturnInsideProperty.kt
index c8b74cf76fc..7808b367f3e 100644
--- a/compiler/testData/codegen/box/nonLocalReturns/localReturnInsideProperty.kt
+++ b/compiler/testData/codegen/box/nonLocalReturns/localReturnInsideProperty.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 interface ClassData
 
 fun f() = object : ClassData {
diff --git a/compiler/testData/codegen/box/objects/anonymousObjectReturnsFromTopLevelFun.kt b/compiler/testData/codegen/box/objects/anonymousObjectReturnsFromTopLevelFun.kt
index f746e709f95..c2f14068bfe 100644
--- a/compiler/testData/codegen/box/objects/anonymousObjectReturnsFromTopLevelFun.kt
+++ b/compiler/testData/codegen/box/objects/anonymousObjectReturnsFromTopLevelFun.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 interface IFoo {
     fun foo(): String
 }
diff --git a/compiler/testData/codegen/box/objects/kt2663.kt b/compiler/testData/codegen/box/objects/kt2663.kt
index ddea6734883..b7dad56133f 100644
--- a/compiler/testData/codegen/box/objects/kt2663.kt
+++ b/compiler/testData/codegen/box/objects/kt2663.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 fun box() : String {
     var a = 1
 
diff --git a/compiler/testData/codegen/box/objects/kt4086.kt b/compiler/testData/codegen/box/objects/kt4086.kt
index 368c7a707f3..2aa1ca343d8 100644
--- a/compiler/testData/codegen/box/objects/kt4086.kt
+++ b/compiler/testData/codegen/box/objects/kt4086.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 interface N
 
 open class Base(n: N)
diff --git a/compiler/testData/codegen/box/objects/kt560.kt b/compiler/testData/codegen/box/objects/kt560.kt
index 66b1ea17163..4ff549776e4 100644
--- a/compiler/testData/codegen/box/objects/kt560.kt
+++ b/compiler/testData/codegen/box/objects/kt560.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 package while_bug_1
diff --git a/compiler/testData/codegen/box/objects/selfReferenceToCompanionObjectInAnonymousObjectInSuperConstructorCall.kt b/compiler/testData/codegen/box/objects/selfReferenceToCompanionObjectInAnonymousObjectInSuperConstructorCall.kt
index 69a0d870fca..099a68bfe1f 100644
--- a/compiler/testData/codegen/box/objects/selfReferenceToCompanionObjectInAnonymousObjectInSuperConstructorCall.kt
+++ b/compiler/testData/codegen/box/objects/selfReferenceToCompanionObjectInAnonymousObjectInSuperConstructorCall.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 interface IFn {
     operator fun invoke(): String
 }
diff --git a/compiler/testData/codegen/box/objects/selfReferenceToInterfaceCompanionObjectInAnonymousObjectInSuperConstructorCall.kt b/compiler/testData/codegen/box/objects/selfReferenceToInterfaceCompanionObjectInAnonymousObjectInSuperConstructorCall.kt
index 07d99c40bea..f1b33e5ba20 100644
--- a/compiler/testData/codegen/box/objects/selfReferenceToInterfaceCompanionObjectInAnonymousObjectInSuperConstructorCall.kt
+++ b/compiler/testData/codegen/box/objects/selfReferenceToInterfaceCompanionObjectInAnonymousObjectInSuperConstructorCall.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 interface IFn {
     operator fun invoke(): String
 }
diff --git a/compiler/testData/codegen/box/objects/selfReferenceToObjectInAnonymousObjectInSuperConstructorCall.kt b/compiler/testData/codegen/box/objects/selfReferenceToObjectInAnonymousObjectInSuperConstructorCall.kt
index 30572928976..2239c1b09e9 100644
--- a/compiler/testData/codegen/box/objects/selfReferenceToObjectInAnonymousObjectInSuperConstructorCall.kt
+++ b/compiler/testData/codegen/box/objects/selfReferenceToObjectInAnonymousObjectInSuperConstructorCall.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 interface IFn {
     operator fun invoke(): String
 }
diff --git a/compiler/testData/codegen/box/primitiveTypes/kt2251.kt b/compiler/testData/codegen/box/primitiveTypes/kt2251.kt
index 68fc2494020..d75041090e5 100644
--- a/compiler/testData/codegen/box/primitiveTypes/kt2251.kt
+++ b/compiler/testData/codegen/box/primitiveTypes/kt2251.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 class A(var b: Byte) {
   fun c(d: Short)  = (b + d.toByte()).toChar()
 }
diff --git a/compiler/testData/codegen/box/properties/kt1159.kt b/compiler/testData/codegen/box/properties/kt1159.kt
index c0306657628..ff0d5301ccc 100644
--- a/compiler/testData/codegen/box/properties/kt1159.kt
+++ b/compiler/testData/codegen/box/properties/kt1159.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
diff --git a/compiler/testData/codegen/box/reflection/enclosing/anonymousObjectInInlinedLambda.kt b/compiler/testData/codegen/box/reflection/enclosing/anonymousObjectInInlinedLambda.kt
index 547f018e245..3d578531deb 100644
--- a/compiler/testData/codegen/box/reflection/enclosing/anonymousObjectInInlinedLambda.kt
+++ b/compiler/testData/codegen/box/reflection/enclosing/anonymousObjectInInlinedLambda.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 // WITH_REFLECT
diff --git a/compiler/testData/codegen/box/reflection/enclosing/kt6368.kt b/compiler/testData/codegen/box/reflection/enclosing/kt6368.kt
index 7a32f51440b..bfe7a75c733 100644
--- a/compiler/testData/codegen/box/reflection/enclosing/kt6368.kt
+++ b/compiler/testData/codegen/box/reflection/enclosing/kt6368.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 // WITH_REFLECT
diff --git a/compiler/testData/codegen/box/reflection/enclosing/lambdaInObjectExpression.kt b/compiler/testData/codegen/box/reflection/enclosing/lambdaInObjectExpression.kt
index ecd7d2f9183..2a05c7f56f3 100644
--- a/compiler/testData/codegen/box/reflection/enclosing/lambdaInObjectExpression.kt
+++ b/compiler/testData/codegen/box/reflection/enclosing/lambdaInObjectExpression.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 // WITH_REFLECT
 
diff --git a/compiler/testData/codegen/box/regressions/Kt1149.kt b/compiler/testData/codegen/box/regressions/Kt1149.kt
index c1a82e063c0..985e1628eab 100644
--- a/compiler/testData/codegen/box/regressions/Kt1149.kt
+++ b/compiler/testData/codegen/box/regressions/Kt1149.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
 
diff --git a/compiler/testData/codegen/box/regressions/kt344.kt b/compiler/testData/codegen/box/regressions/kt344.kt
index cafcaafd0ad..8c6d2a103bd 100644
--- a/compiler/testData/codegen/box/regressions/kt344.kt
+++ b/compiler/testData/codegen/box/regressions/kt344.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
diff --git a/compiler/testData/codegen/box/regressions/objectInsideDelegation.kt b/compiler/testData/codegen/box/regressions/objectInsideDelegation.kt
index 2fa010627f3..f2f9caf960d 100644
--- a/compiler/testData/codegen/box/regressions/objectInsideDelegation.kt
+++ b/compiler/testData/codegen/box/regressions/objectInsideDelegation.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME
 
 val b: First by lazy {
diff --git a/compiler/testData/codegen/box/reified/anonymousObjectNoPropagate.kt b/compiler/testData/codegen/box/reified/anonymousObjectNoPropagate.kt
index 57e666ffa0f..ae7d058fa46 100644
--- a/compiler/testData/codegen/box/reified/anonymousObjectNoPropagate.kt
+++ b/compiler/testData/codegen/box/reified/anonymousObjectNoPropagate.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 // WITH_RUNTIME
diff --git a/compiler/testData/codegen/box/reified/reifiedInlineFunOfObject.kt b/compiler/testData/codegen/box/reified/reifiedInlineFunOfObject.kt
index e1f41121214..f25e58cadc9 100644
--- a/compiler/testData/codegen/box/reified/reifiedInlineFunOfObject.kt
+++ b/compiler/testData/codegen/box/reified/reifiedInlineFunOfObject.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 // WITH_RUNTIME
diff --git a/compiler/testData/codegen/box/reified/reifiedInlineFunOfObjectWithinReified.kt b/compiler/testData/codegen/box/reified/reifiedInlineFunOfObjectWithinReified.kt
index a02d70779a6..6abdf91192c 100644
--- a/compiler/testData/codegen/box/reified/reifiedInlineFunOfObjectWithinReified.kt
+++ b/compiler/testData/codegen/box/reified/reifiedInlineFunOfObjectWithinReified.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 // WITH_RUNTIME
diff --git a/compiler/testData/codegen/box/reified/reifiedInlineIntoNonInlineableLambda.kt b/compiler/testData/codegen/box/reified/reifiedInlineIntoNonInlineableLambda.kt
index e96ecc77dce..b1641f1ed42 100644
--- a/compiler/testData/codegen/box/reified/reifiedInlineIntoNonInlineableLambda.kt
+++ b/compiler/testData/codegen/box/reified/reifiedInlineIntoNonInlineableLambda.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 // WITH_RUNTIME
diff --git a/compiler/testData/codegen/box/reified/spreads.kt b/compiler/testData/codegen/box/reified/spreads.kt
index ee2d7159538..3ef1765c97b 100644
--- a/compiler/testData/codegen/box/reified/spreads.kt
+++ b/compiler/testData/codegen/box/reified/spreads.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
 
diff --git a/compiler/testData/codegen/box/reified/varargs.kt b/compiler/testData/codegen/box/reified/varargs.kt
index 0248efa908c..a3cd0cbb9d4 100644
--- a/compiler/testData/codegen/box/reified/varargs.kt
+++ b/compiler/testData/codegen/box/reified/varargs.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
 
diff --git a/compiler/testData/codegen/box/safeCall/kt1572.kt b/compiler/testData/codegen/box/safeCall/kt1572.kt
index faf15a2e619..d3b3c52bde1 100644
--- a/compiler/testData/codegen/box/safeCall/kt1572.kt
+++ b/compiler/testData/codegen/box/safeCall/kt1572.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 //KT-1572 Frontend doesn't mark all vars included in closure as refs.
 
 class A(val t : Int) {}
diff --git a/compiler/testData/codegen/box/sam/constructors/syntheticVsReal.kt b/compiler/testData/codegen/box/sam/constructors/syntheticVsReal.kt
index 70688092389..70ad7f5b42b 100644
--- a/compiler/testData/codegen/box/sam/constructors/syntheticVsReal.kt
+++ b/compiler/testData/codegen/box/sam/constructors/syntheticVsReal.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 var global = ""
diff --git a/compiler/testData/codegen/box/toArray/toArrayShouldBePublic.kt b/compiler/testData/codegen/box/toArray/toArrayShouldBePublic.kt
index 5b55024d73e..78f1b92f895 100644
--- a/compiler/testData/codegen/box/toArray/toArrayShouldBePublic.kt
+++ b/compiler/testData/codegen/box/toArray/toArrayShouldBePublic.kt
@@ -1,5 +1,4 @@
 // TARGET_BACKEND: JVM
-// IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME
 
 // FILE: SingletonCollection.kt
diff --git a/compiler/testData/codegen/box/toArray/toArrayShouldBePublicWithJava.kt b/compiler/testData/codegen/box/toArray/toArrayShouldBePublicWithJava.kt
index a23b4876698..8e170ae174a 100644
--- a/compiler/testData/codegen/box/toArray/toArrayShouldBePublicWithJava.kt
+++ b/compiler/testData/codegen/box/toArray/toArrayShouldBePublicWithJava.kt
@@ -1,5 +1,4 @@
 // TARGET_BACKEND: JVM
-// IGNORE_BACKEND_FIR: JVM_IR
 // WITH_RUNTIME
 // IGNORE_LIGHT_ANALYSIS
 
diff --git a/compiler/testData/codegen/box/traits/interfaceDefaultImpls.kt b/compiler/testData/codegen/box/traits/interfaceDefaultImpls.kt
index b6ca02494dc..991f550c928 100644
--- a/compiler/testData/codegen/box/traits/interfaceDefaultImpls.kt
+++ b/compiler/testData/codegen/box/traits/interfaceDefaultImpls.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 // FILE: B.java
diff --git a/compiler/testData/codegen/box/unsignedTypes/forEachIndexedInListOfUInts.kt b/compiler/testData/codegen/box/unsignedTypes/forEachIndexedInListOfUInts.kt
index 83868bed072..c5b1fb680c4 100644
--- a/compiler/testData/codegen/box/unsignedTypes/forEachIndexedInListOfUInts.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/forEachIndexedInListOfUInts.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
 
diff --git a/compiler/testData/codegen/box/unsignedTypes/unsignedRangeIterator.kt b/compiler/testData/codegen/box/unsignedTypes/unsignedRangeIterator.kt
index 80d132691d4..a3f547cf1cb 100644
--- a/compiler/testData/codegen/box/unsignedTypes/unsignedRangeIterator.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/unsignedRangeIterator.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME