[FIR & FIR2IR] Prepare test and CLI infrastructure to support MPP

- Move out getAnalyzerServices from FirFrontendFacade to TestSetupUtils
- Simplify DependencyListForCliModule. Now it takes BinaryModuleData as input
- FirOutArtifact contains several FirOutputArtifactPart
- Simplify FirFrontendFacade

analysis/analysis-test-framework/tests/org/jetbrains/kotlin/analysis/test/framework/project/structure/KtSourceModuleByCompilerConfiguration.kt

@@ -21,7 +21,7 @@ import org.jetbrains.kotlin.config.LanguageVersionSettings
 import org.jetbrains.kotlin.platform.TargetPlatform
 import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.resolve.PlatformDependentAnalyzerServices
-import org.jetbrains.kotlin.test.frontend.fir.getAnalyzerServices
+import org.jetbrains.kotlin.test.getAnalyzerServices
 import org.jetbrains.kotlin.test.model.TestModule
 import org.jetbrains.kotlin.test.services.TestServices
 import org.jetbrains.kotlin.test.services.compilerConfigurationProvider

analysis/analysis-test-framework/tests/org/jetbrains/kotlin/analysis/test/framework/project/structure/KtSourceModuleImpl.kt

@@ -11,7 +11,7 @@ import org.jetbrains.kotlin.analysis.project.structure.*
 import org.jetbrains.kotlin.config.LanguageVersionSettings
 import org.jetbrains.kotlin.platform.TargetPlatform
 import org.jetbrains.kotlin.resolve.PlatformDependentAnalyzerServices
-import org.jetbrains.kotlin.test.frontend.fir.getAnalyzerServices
+import org.jetbrains.kotlin.test.getAnalyzerServices
 import java.nio.file.Path
 
 interface KtModuleWithModifiableDependencies {

analysis/analysis-test-framework/tests/org/jetbrains/kotlin/analysis/test/framework/services/AnalysisApiEnvironmentManager.kt

@@ -16,7 +16,7 @@ import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreApplicationEnvironment
 import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreProjectEnvironment
 import org.jetbrains.kotlin.config.JVMConfigurationKeys
 import org.jetbrains.kotlin.config.languageVersionSettings
-import org.jetbrains.kotlin.test.frontend.fir.getAnalyzerServices
+import org.jetbrains.kotlin.test.getAnalyzerServices
 import org.jetbrains.kotlin.test.services.*
 
 abstract class AnalysisApiEnvironmentManager : TestService {

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/compiler/based/AbstractCompilerBasedTestForFir.kt

@@ -9,11 +9,13 @@ package org.jetbrains.kotlin.analysis.low.level.api.fir.compiler.based
 import org.jetbrains.kotlin.analysis.low.level.api.fir.api.DiagnosticCheckerFilter
 import org.jetbrains.kotlin.analysis.low.level.api.fir.api.getOrBuildFirFile
 import org.jetbrains.kotlin.analysis.low.level.api.fir.createFirResolveSessionForNoCaching
+import org.jetbrains.kotlin.analysis.low.level.api.fir.test.base.FirLowLevelCompilerBasedTestConfigurator
 import org.jetbrains.kotlin.analysis.low.level.api.fir.transformers.LLFirLazyTransformer
 import org.jetbrains.kotlin.analysis.test.framework.AbstractCompilerBasedTest
 import org.jetbrains.kotlin.analysis.test.framework.base.registerAnalysisApiBaseTestServices
 import org.jetbrains.kotlin.analysis.test.framework.project.structure.KtSourceModuleByCompilerConfiguration
 import org.jetbrains.kotlin.analysis.test.framework.project.structure.ktModuleProvider
+import org.jetbrains.kotlin.config.LanguageFeature
 import org.jetbrains.kotlin.platform.jvm.JvmPlatforms
 import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.test.TestInfrastructureInternals
@@ -23,15 +25,13 @@ import org.jetbrains.kotlin.test.builders.testConfiguration
 import org.jetbrains.kotlin.test.directives.FirDiagnosticsDirectives
 import org.jetbrains.kotlin.test.directives.model.DirectivesContainer
 import org.jetbrains.kotlin.test.frontend.fir.FirOutputArtifact
+import org.jetbrains.kotlin.test.frontend.fir.FirOutputArtifactImpl
+import org.jetbrains.kotlin.test.frontend.fir.FirOutputPartForDependsOnModule
 import org.jetbrains.kotlin.test.model.DependencyKind
 import org.jetbrains.kotlin.test.model.FrontendFacade
 import org.jetbrains.kotlin.test.model.FrontendKinds
 import org.jetbrains.kotlin.test.model.TestModule
-import org.jetbrains.kotlin.test.services.TestServices
-import org.jetbrains.kotlin.test.services.compilerConfigurationProvider
-import org.jetbrains.kotlin.test.services.isKtFile
 import org.jetbrains.kotlin.test.services.*
-import org.jetbrains.kotlin.analysis.low.level.api.fir.test.base.FirLowLevelCompilerBasedTestConfigurator
 
 abstract class AbstractCompilerBasedTestForFir : AbstractCompilerBasedTest() {
     @OptIn(TestInfrastructureInternals::class)
@@ -58,11 +58,55 @@ abstract class AbstractCompilerBasedTestForFir : AbstractCompilerBasedTest() {
     inner class LowLevelFirFrontendFacade(
         testServices: TestServices
     ) : FrontendFacade<FirOutputArtifact>(testServices, FrontendKinds.FIR) {
+        private val testModulesByName by lazy { testServices.moduleStructure.modules.associateBy { it.name } }
 
         override val directiveContainers: List<DirectivesContainer>
             get() = listOf(FirDiagnosticsDirectives)
 
+        override fun shouldRunAnalysis(module: TestModule): Boolean {
+            if (!super.shouldRunAnalysis(module)) return false
+
+            return if (module.languageVersionSettings.supportsFeature(LanguageFeature.MultiPlatformProjects)) {
+                testServices.moduleStructure
+                    .modules.none { testModule -> testModule.dependsOnDependencies.any { testModulesByName[it.moduleName] == module } }
+            } else {
+                true
+            }
+        }
+
         override fun analyze(module: TestModule): FirOutputArtifact {
+            val isMppSupported = module.languageVersionSettings.supportsFeature(LanguageFeature.MultiPlatformProjects)
+
+            val sortedModules = if (isMppSupported) sortDependsOnTopologically(module) else listOf(module)
+
+            val firOutputPartForDependsOnModules = mutableListOf<FirOutputPartForDependsOnModule>()
+            for (testModule in sortedModules) {
+                firOutputPartForDependsOnModules.add(analyzeDependsOnModule(testModule))
+            }
+
+            return FirOutputArtifactImpl(firOutputPartForDependsOnModules)
+        }
+
+        private fun sortDependsOnTopologically(module: TestModule): List<TestModule> {
+            val sortedModules = mutableListOf<TestModule>()
+            val visitedModules = mutableSetOf<TestModule>()
+            val modulesQueue = ArrayDeque<TestModule>()
+            modulesQueue.add(module)
+
+            while (modulesQueue.isNotEmpty()) {
+                val currentModule = modulesQueue.removeFirst()
+                if (!visitedModules.add(currentModule)) continue
+                sortedModules.add(currentModule)
+
+                for (dependency in currentModule.dependsOnDependencies) {
+                    modulesQueue.add(testServices.dependencyProvider.getTestModule(dependency.moduleName))
+                }
+            }
+
+            return sortedModules.reversed()
+        }
+
+        private fun analyzeDependsOnModule(module: TestModule): FirOutputPartForDependsOnModule {
             val moduleInfoProvider = testServices.ktModuleProvider
             val ktModule = moduleInfoProvider.getModule(module.name) as KtSourceModuleByCompilerConfiguration
 
@@ -81,7 +125,12 @@ abstract class AbstractCompilerBasedTestForFir : AbstractCompilerBasedTest() {
             } else DiagnosticCheckerFilter.ONLY_COMMON_CHECKERS
 
             val analyzerFacade = LowLevelFirAnalyzerFacade(firResolveSession, allFirFiles.toMap(), diagnosticCheckerFilter)
-            return LowLevelFirOutputArtifact(firResolveSession.useSiteFirSession, analyzerFacade)
+            return FirOutputPartForDependsOnModule(
+                module,
+                firResolveSession.useSiteFirSession,
+                analyzerFacade,
+                analyzerFacade.allFirFiles
+            )
         }
     }
 

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/compiler/based/LLDiagnosticParameterChecker.kt

@@ -18,10 +18,12 @@ import org.jetbrains.kotlin.test.services.assertions
 
 internal class LLDiagnosticParameterChecker(testServices: TestServices) : FirAnalysisHandler(testServices) {
     override fun processModule(module: TestModule, info: FirOutputArtifact) {
-        val diagnostics = info.firAnalyzerFacade.runCheckers().values.flatten()
+        for (part in info.partsForDependsOnModules) {
+            val diagnostics = part.firAnalyzerFacade.runCheckers().values.flatten()
 
-        for (diagnostic in diagnostics) {
-            checkDiagnosticIsSuitableForFirIde(diagnostic as KtPsiDiagnostic)
+            for (diagnostic in diagnostics) {
+                checkDiagnosticIsSuitableForFirIde(diagnostic as KtPsiDiagnostic)
+            }
         }
     }
 

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/compiler/based/LowLevelFirAnalyzerFacade.kt

@@ -10,6 +10,7 @@ import org.jetbrains.kotlin.analysis.low.level.api.fir.api.LLFirResolveSession
 import org.jetbrains.kotlin.analysis.low.level.api.fir.api.collectDiagnosticsForFile
 import org.jetbrains.kotlin.diagnostics.KtDiagnostic
 import org.jetbrains.kotlin.fir.AbstractFirAnalyzerFacade
+import org.jetbrains.kotlin.fir.backend.Fir2IrComponents
 import org.jetbrains.kotlin.fir.backend.Fir2IrExtensions
 import org.jetbrains.kotlin.fir.backend.Fir2IrResult
 import org.jetbrains.kotlin.fir.declarations.FirFile
@@ -36,7 +37,7 @@ class LowLevelFirAnalyzerFacade(
     }
 
     override fun runResolution(): List<FirFile> = shouldNotBeCalled()
-    override fun convertToIr(fir2IrExtensions: Fir2IrExtensions): Fir2IrResult = shouldNotBeCalled()
+    override fun convertToIr(fir2IrExtensions: Fir2IrExtensions, dependentComponents: List<Fir2IrComponents>): Fir2IrResult = shouldNotBeCalled()
 }
 
 private fun shouldNotBeCalled(): Nothing = error("Should not be called for LL test")

analysis/low-level-api-fir/tests/org/jetbrains/kotlin/analysis/low/level/api/fir/compiler/based/LowLevelFirOutputArtifact.kt

@@ -1,19 +0,0 @@
-/*
- * Copyright 2010-2021 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.analysis.low.level.api.fir.compiler.based
-
-import org.jetbrains.kotlin.fir.FirSession
-import org.jetbrains.kotlin.fir.declarations.FirFile
-import org.jetbrains.kotlin.test.frontend.fir.FirOutputArtifact
-import org.jetbrains.kotlin.test.model.TestFile
-
-class LowLevelFirOutputArtifact(
-    override val session: FirSession,
-    override val firAnalyzerFacade: LowLevelFirAnalyzerFacade,
-) : FirOutputArtifact() {
-    override val allFirFiles: Map<TestFile, FirFile>
-        get() = firAnalyzerFacade.allFirFiles
-}

compiler/cli/cli-js/src/org/jetbrains/kotlin/cli/js/K2JsIrCompiler.kt

@@ -43,9 +43,7 @@ import org.jetbrains.kotlin.config.languageVersionSettings
 import org.jetbrains.kotlin.descriptors.DeclarationDescriptor
 import org.jetbrains.kotlin.descriptors.impl.ModuleDescriptorImpl
 import org.jetbrains.kotlin.diagnostics.DiagnosticReporterFactory
-import org.jetbrains.kotlin.fir.DependencyListForCliModule
-import org.jetbrains.kotlin.fir.FirModuleDataImpl
-import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.*
 import org.jetbrains.kotlin.fir.backend.Fir2IrConverter
 import org.jetbrains.kotlin.fir.backend.Fir2IrExtensions
 import org.jetbrains.kotlin.fir.backend.Fir2IrVisibilityConverter
@@ -55,7 +53,6 @@ import org.jetbrains.kotlin.fir.checkers.registerExtendedCommonCheckers
 import org.jetbrains.kotlin.fir.descriptors.FirModuleDescriptor
 import org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrar
 import org.jetbrains.kotlin.fir.java.FirProjectSessionProvider
-import org.jetbrains.kotlin.fir.moduleData
 import org.jetbrains.kotlin.fir.pipeline.buildFirFromKtFiles
 import org.jetbrains.kotlin.fir.pipeline.runCheckers
 import org.jetbrains.kotlin.fir.pipeline.runResolution
@@ -509,7 +506,8 @@ class K2JsIrCompiler : CLICompiler<K2JSCompilerArguments>() {
 
         val mainModule = MainModule.SourceFiles(environmentForJS.getSourceFiles())
 
-        val dependencyList = DependencyListForCliModule.build(mainModuleName, JsPlatforms.defaultJsPlatform, JsPlatformAnalyzerServices) {
+        val binaryModuleData = BinaryModuleData.initialize(mainModuleName, JsPlatforms.defaultJsPlatform, JsPlatformAnalyzerServices)
+        val dependencyList = DependencyListForCliModule.build(binaryModuleData) {
             dependencies(libraries.map { Paths.get(it).toAbsolutePath() })
             friendDependencies(friendLibraries.map { Paths.get(it).toAbsolutePath() })
             // TODO: !!! dependencies module data?
@@ -533,8 +531,8 @@ class K2JsIrCompiler : CLICompiler<K2JSCompilerArguments>() {
             dependencyList.regularDependencies,
             dependencyList.dependsOnDependencies,
             dependencyList.friendsDependencies,
-            dependencyList.platform,
-            dependencyList.analyzerServices
+            JsPlatforms.defaultJsPlatform,
+            JsPlatformAnalyzerServices
         )
 
         val session = FirJsSessionFactory.createJsModuleBasedSession(
@@ -598,7 +596,8 @@ class K2JsIrCompiler : CLICompiler<K2JSCompilerArguments>() {
             Fir2IrJvmSpecialAnnotationSymbolProvider(), // TODO: replace with appropriate (probably empty) implementation
             IrGenerationExtension.getInstances(environmentForJS.project),
             generateSignatures = false,
-            kotlinBuiltIns = builtInsModule ?: DefaultBuiltIns.Instance // TODO: consider passing externally
+            kotlinBuiltIns = builtInsModule ?: DefaultBuiltIns.Instance, // TODO: consider passing externally
+            dependentComponents = emptyList()
         ).also {
             (it.irModuleFragment.descriptor as? FirModuleDescriptor)?.let { it.allDependencyModules = librariesDescriptors }
         }

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/FirKotlinToJvmBytecodeCompiler.kt

@@ -7,7 +7,6 @@
 
 package org.jetbrains.kotlin.cli.jvm.compiler
 
-import org.jetbrains.kotlin.analyzer.common.CommonPlatformAnalyzerServices
 import org.jetbrains.kotlin.backend.common.extensions.IrGenerationExtension
 import org.jetbrains.kotlin.backend.jvm.JvmGeneratorExtensions
 import org.jetbrains.kotlin.backend.jvm.JvmIrCodegenFactory
@@ -26,24 +25,21 @@ import org.jetbrains.kotlin.cli.jvm.config.jvmModularRoots
 import org.jetbrains.kotlin.codegen.ClassBuilderFactories
 import org.jetbrains.kotlin.codegen.CodegenFactory
 import org.jetbrains.kotlin.codegen.state.GenerationState
-import org.jetbrains.kotlin.compiler.plugin.ComponentRegistrar
 import org.jetbrains.kotlin.compiler.plugin.CompilerPluginRegistrar
+import org.jetbrains.kotlin.compiler.plugin.ComponentRegistrar
 import org.jetbrains.kotlin.config.*
 import org.jetbrains.kotlin.diagnostics.DiagnosticReporterFactory
 import org.jetbrains.kotlin.diagnostics.impl.BaseDiagnosticsCollector
 import org.jetbrains.kotlin.fir.*
-import org.jetbrains.kotlin.fir.backend.Fir2IrResult
-import org.jetbrains.kotlin.fir.backend.jvm.FirJvmBackendClassResolver
-import org.jetbrains.kotlin.fir.backend.jvm.FirJvmBackendExtension
-import org.jetbrains.kotlin.fir.backend.jvm.JvmFir2IrExtensions
+import org.jetbrains.kotlin.fir.backend.*
+import org.jetbrains.kotlin.fir.backend.jvm.*
 import org.jetbrains.kotlin.fir.checkers.registerExtendedCommonCheckers
 import org.jetbrains.kotlin.fir.declarations.FirFile
 import org.jetbrains.kotlin.fir.declarations.FirSimpleFunction
 import org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrar
 import org.jetbrains.kotlin.fir.java.FirProjectSessionProvider
 import org.jetbrains.kotlin.fir.pipeline.*
-import org.jetbrains.kotlin.fir.session.FirSessionFactoryHelper
-import org.jetbrains.kotlin.fir.session.IncrementalCompilationContext
+import org.jetbrains.kotlin.fir.session.*
 import org.jetbrains.kotlin.fir.session.environment.AbstractProjectEnvironment
 import org.jetbrains.kotlin.fir.session.environment.AbstractProjectFileSearchScope
 import org.jetbrains.kotlin.fir.types.arrayElementType
@@ -52,18 +48,16 @@ import org.jetbrains.kotlin.fir.types.isArrayType
 import org.jetbrains.kotlin.fir.types.isString
 import org.jetbrains.kotlin.fir.visitors.FirVisitorVoid
 import org.jetbrains.kotlin.ir.backend.jvm.serialization.JvmIrMangler
+import org.jetbrains.kotlin.ir.symbols.*
 import org.jetbrains.kotlin.load.kotlin.incremental.IncrementalPackagePartProvider
 import org.jetbrains.kotlin.load.kotlin.incremental.components.IncrementalCompilationComponents
 import org.jetbrains.kotlin.modules.Module
 import org.jetbrains.kotlin.modules.TargetId
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.platform.CommonPlatforms
-import org.jetbrains.kotlin.platform.TargetPlatform
 import org.jetbrains.kotlin.platform.jvm.JvmPlatforms
 import org.jetbrains.kotlin.progress.ProgressIndicatorAndCompilationCanceledStatus
 import org.jetbrains.kotlin.psi.KtFile
-import org.jetbrains.kotlin.resolve.PlatformDependentAnalyzerServices
 import org.jetbrains.kotlin.resolve.jvm.platform.JvmPlatformAnalyzerServices
 import org.jetbrains.kotlin.resolve.multiplatform.isCommonSource
 import org.jetbrains.kotlin.utils.addToStdlib.runIf
@@ -102,15 +96,8 @@ object FirKotlinToJvmBytecodeCompiler {
             )
             return false
         }
-        if (projectConfiguration.languageVersionSettings.supportsFeature(LanguageFeature.MultiPlatformProjects)) {
-            messageCollector.report(
-                CompilerMessageSeverity.ERROR,
-                "K2 compiler does not support multi-platform projects yet, so please remove -Xuse-k2 flag"
-            )
-            return false
-        }
 
-        val outputs = ArrayList<Pair<ModuleCompilerAnalyzedOutput, GenerationState>>(chunk.size)
+        val outputs = ArrayList<Pair<FirResult, GenerationState>>(chunk.size)
         val targetIds = projectConfiguration.get(JVMConfigurationKeys.MODULES)?.map(::TargetId)
         val incrementalComponents = projectConfiguration.get(JVMConfigurationKeys.INCREMENTAL_COMPILATION_COMPONENTS)
         val isMultiModuleChunk = chunk.size > 1
@@ -140,14 +127,14 @@ object FirKotlinToJvmBytecodeCompiler {
         }
 
         val mainClassFqName: FqName? = runIf(chunk.size == 1 && projectConfiguration.get(JVMConfigurationKeys.OUTPUT_JAR) != null) {
-            findMainClass(outputs.single().first.fir)
+            findMainClass(outputs.single().first.platformOutput.fir)
         }
 
         return writeOutputsIfNeeded(
             project,
             projectConfiguration,
             chunk,
-            outputs.map(Pair<ModuleCompilerAnalyzedOutput, GenerationState>::second),
+            outputs.map(Pair<FirResult, GenerationState>::second),
             mainClassFqName
         )
     }
@@ -160,7 +147,7 @@ object FirKotlinToJvmBytecodeCompiler {
             ?.mapTo(destination) { it::class.qualifiedName }
     }
 
-    private fun CompilationContext.compileModule(): Pair<ModuleCompilerAnalyzedOutput, GenerationState>? {
+    private fun CompilationContext.compileModule(): Pair<FirResult, GenerationState>? {
         performanceManager?.notifyAnalysisStarted()
         ProgressIndicatorAndCompilationCanceledStatus.checkCanceled()
 
@@ -181,8 +168,11 @@ object FirKotlinToJvmBytecodeCompiler {
         performanceManager?.notifyIRTranslationStarted()
 
         val fir2IrExtensions = JvmFir2IrExtensions(moduleConfiguration, JvmIrDeserializerImpl(), JvmIrMangler)
-        val linkViaSignatures = moduleConfiguration.getBoolean(JVMConfigurationKeys.LINK_VIA_SIGNATURES)
-        val fir2IrResult = firResult.convertToIr(fir2IrExtensions, irGenerationExtensions, linkViaSignatures)
+        val fir2IrResult = firResult.convertToIrAndActualize(
+            fir2IrExtensions,
+            irGenerationExtensions,
+            linkViaSignatures = moduleConfiguration.getBoolean(JVMConfigurationKeys.LINK_VIA_SIGNATURES)
+        )
 
         performanceManager?.notifyIRTranslationFinished()
 
@@ -190,7 +180,7 @@ object FirKotlinToJvmBytecodeCompiler {
             allSources,
             fir2IrResult,
             fir2IrExtensions,
-            firResult.session,
+            firResult.platformOutput.session,
             diagnosticsReporter
         )
 
@@ -203,14 +193,12 @@ object FirKotlinToJvmBytecodeCompiler {
         return firResult to generationState
     }
 
-    private fun CompilationContext.runFrontend(ktFiles: List<KtFile>, diagnosticsReporter: BaseDiagnosticsCollector): ModuleCompilerAnalyzedOutput? {
-        @Suppress("NAME_SHADOWING")
-        var ktFiles = ktFiles
+    private fun CompilationContext.runFrontend(ktFiles: List<KtFile>, diagnosticsReporter: BaseDiagnosticsCollector): FirResult? {
         val syntaxErrors = ktFiles.fold(false) { errorsFound, ktFile ->
             AnalyzerWithCompilerReport.reportSyntaxErrors(ktFile, messageCollector).isHasErrors or errorsFound
         }
 
-        var sourceScope = (projectEnvironment as VfsBasedProjectEnvironment).getSearchScopeByPsiFiles(ktFiles) +
+        val sourceScope = (projectEnvironment as VfsBasedProjectEnvironment).getSearchScopeByPsiFiles(ktFiles) +
                 projectEnvironment.getSearchScopeForProjectJavaSources()
 
         var librariesScope = projectEnvironment.getSearchScopeForProjectLibraries()
@@ -223,85 +211,132 @@ object FirKotlinToJvmBytecodeCompiler {
 
         val languageVersionSettings = moduleConfiguration.languageVersionSettings
 
-        val commonKtFiles = ktFiles.filter { it.isCommonSource == true }
+        val isMppEnabled = languageVersionSettings.supportsFeature(LanguageFeature.MultiPlatformProjects)
 
         val sessionProvider = FirProjectSessionProvider()
 
-        fun createSession(
-            name: String,
-            platform: TargetPlatform,
-            analyzerServices: PlatformDependentAnalyzerServices,
-            sourceScope: AbstractProjectFileSearchScope,
-            needRegisterJavaElementFinder: Boolean,
-            dependenciesConfigurator: DependencyListForCliModule.Builder.() -> Unit = {}
-        ): FirSession {
-            return FirSessionFactoryHelper.createSessionWithDependencies(
-                Name.identifier(name),
-                platform,
-                analyzerServices,
-                externalSessionProvider = sessionProvider,
-                projectEnvironment,
-                languageVersionSettings,
-                sourceScope,
-                librariesScope,
-                lookupTracker = moduleConfiguration.get(CommonConfigurationKeys.LOOKUP_TRACKER),
-                enumWhenTracker = moduleConfiguration.get(CommonConfigurationKeys.ENUM_WHEN_TRACKER),
-                providerAndScopeForIncrementalCompilation,
-                firExtensionRegistrars,
-                needRegisterJavaElementFinder,
-                dependenciesConfigurator = {
-                    dependencies(moduleConfiguration.jvmClasspathRoots.map { it.toPath() })
-                    dependencies(moduleConfiguration.jvmModularRoots.map { it.toPath() })
-                    friendDependencies(moduleConfiguration[JVMConfigurationKeys.FRIEND_PATHS] ?: emptyList())
-                    dependenciesConfigurator()
-                }
-            ) {
-                if (extendedAnalysisMode) {
-                    registerExtendedCommonCheckers()
-                }
-            }
-        }
+        val moduleName = module.getModuleName()
+        val libraryList = createLibraryListAndSession(moduleName, sessionProvider, librariesScope, languageVersionSettings)
 
-        val commonSession = runIf(
-            languageVersionSettings.supportsFeature(LanguageFeature.MultiPlatformProjects) && commonKtFiles.isNotEmpty()
-        ) {
-            val commonSourcesScope = projectEnvironment.getSearchScopeByPsiFiles(commonKtFiles)
-            sourceScope -= commonSourcesScope
-            ktFiles = ktFiles.filterNot { it.isCommonSource == true }
-            createSession(
-                "${module.getModuleName()}-common",
-                CommonPlatforms.defaultCommonPlatform,
-                CommonPlatformAnalyzerServices,
-                commonSourcesScope,
-                needRegisterJavaElementFinder = false
+        val commonModuleData = runIf(isMppEnabled) {
+            FirModuleDataImpl(
+                Name.identifier("${module.getModuleName()}-common"),
+                libraryList.regularDependencies,
+                listOf(),
+                libraryList.friendsDependencies,
+                JvmPlatforms.unspecifiedJvmPlatform,
+                JvmPlatformAnalyzerServices
             )
         }
-
-        val session = createSession(
-            module.getModuleName(),
+        val platformModuleData = FirModuleDataImpl(
+            Name.identifier(module.getModuleName()),
+            libraryList.regularDependencies,
+            listOfNotNull(commonModuleData),
+            libraryList.friendsDependencies,
             JvmPlatforms.unspecifiedJvmPlatform,
-            JvmPlatformAnalyzerServices,
-            sourceScope,
-            needRegisterJavaElementFinder = true
-        ) {
-            if (commonSession != null) {
-                sourceDependsOnDependencies(listOf(commonSession.moduleData))
+            JvmPlatformAnalyzerServices
+        )
+
+        val lookupTracker = moduleConfiguration.get(CommonConfigurationKeys.LOOKUP_TRACKER)
+        val enumWhenTracker = moduleConfiguration.get(CommonConfigurationKeys.ENUM_WHEN_TRACKER)
+        val sessionConfigurator: FirSessionConfigurator.() -> Unit = {
+            if (extendedAnalysisMode) {
+                registerExtendedCommonCheckers()
             }
+        }
+
+        val commonKtFiles = mutableListOf<KtFile>()
+        val platformKtFiles = mutableListOf<KtFile>()
+        val commonSourcesScope: AbstractProjectFileSearchScope?
+        val platformSourcesScope: AbstractProjectFileSearchScope
+        if (isMppEnabled) {
+            for (ktFile in ktFiles) {
+                (if (ktFile.isCommonSource == true) commonKtFiles else platformKtFiles).add(ktFile)
+            }
+            commonSourcesScope = projectEnvironment.getSearchScopeByPsiFiles(commonKtFiles)
+            platformSourcesScope = sourceScope - commonSourcesScope
+        } else {
+            platformKtFiles.addAll(ktFiles)
+            commonSourcesScope = null
+            platformSourcesScope = sourceScope
+        }
+
+        val commonSession = runIf(isMppEnabled) {
+            FirJvmSessionFactory.createModuleBasedSession(
+                commonModuleData!!,
+                sessionProvider,
+                commonSourcesScope!!,
+                projectEnvironment,
+                providerAndScopeForIncrementalCompilation,
+                firExtensionRegistrars,
+                languageVersionSettings,
+                lookupTracker,
+                enumWhenTracker,
+                needRegisterJavaElementFinder = true,
+                registerExtraComponents = {},
+                sessionConfigurator
+            )
+        }
+        val platformSession = FirJvmSessionFactory.createModuleBasedSession(
+            platformModuleData,
+            sessionProvider,
+            platformSourcesScope,
+            projectEnvironment,
+            providerAndScopeForIncrementalCompilation,
+            firExtensionRegistrars,
+            languageVersionSettings,
+            lookupTracker,
+            enumWhenTracker,
+            needRegisterJavaElementFinder = true,
+            registerExtraComponents = {},
+            sessionConfigurator,
+        )
+
+        val commonOutput = commonSession?.let { buildResolveAndCheckFir(it, commonKtFiles, diagnosticsReporter) }
+        val platformOutput = buildResolveAndCheckFir(platformSession, platformKtFiles, diagnosticsReporter)
+
+        return if (syntaxErrors || diagnosticsReporter.hasErrors) null else FirResult(platformOutput, commonOutput)
+    }
+
+    private fun CompilationContext.createLibraryListAndSession(
+        moduleName: String,
+        sessionProvider: FirProjectSessionProvider,
+        librariesScope: AbstractProjectFileSearchScope,
+        languageVersionSettings: LanguageVersionSettings
+    ): DependencyListForCliModule {
+        val binaryModuleData = BinaryModuleData.initialize(
+            Name.identifier(moduleName),
+            JvmPlatforms.unspecifiedJvmPlatform,
+            JvmPlatformAnalyzerServices
+        )
+        val libraryList = DependencyListForCliModule.build(binaryModuleData) {
+            dependencies(moduleConfiguration.jvmClasspathRoots.map { it.toPath() })
+            dependencies(moduleConfiguration.jvmModularRoots.map { it.toPath() })
+            friendDependencies(moduleConfiguration[JVMConfigurationKeys.FRIEND_PATHS] ?: emptyList())
             friendDependencies(module.getFriendPaths())
         }
+        FirJvmSessionFactory.createLibrarySession(
+            Name.identifier(moduleName),
+            sessionProvider,
+            libraryList.moduleDataProvider,
+            projectEnvironment,
+            librariesScope,
+            projectEnvironment.getPackagePartProvider(librariesScope),
+            languageVersionSettings,
+            registerExtraComponents = {},
+        )
+        return libraryList
+    }
 
-        val commonRawFir = commonSession?.buildFirFromKtFiles(commonKtFiles)
+    private fun buildResolveAndCheckFir(
+        session: FirSession,
+        ktFiles: List<KtFile>,
+        diagnosticsReporter: BaseDiagnosticsCollector
+    ): ModuleCompilerAnalyzedOutput {
         val rawFir = session.buildFirFromKtFiles(ktFiles)
-
-        commonSession?.apply {
-            val (commonScopeSession, commonFir) = runResolution(commonRawFir!!)
-            runCheckers(commonScopeSession, commonFir, diagnosticsReporter)
-        }
-
         val (scopeSession, fir) = session.runResolution(rawFir)
         session.runCheckers(scopeSession, fir, diagnosticsReporter)
-
-        return if (syntaxErrors || diagnosticsReporter.hasErrors) null else ModuleCompilerAnalyzedOutput(session, scopeSession, fir)
+        return ModuleCompilerAnalyzedOutput(session, scopeSession, fir)
     }
 
     private fun CompilationContext.createComponentsForIncrementalCompilation(

compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/pipeline/compilerPipeline.kt

@@ -19,7 +19,6 @@ import com.intellij.psi.search.GlobalSearchScope
 import com.intellij.util.io.URLUtil
 import org.jetbrains.kotlin.KtSourceFile
 import org.jetbrains.kotlin.KtVirtualFileSourceFile
-import org.jetbrains.kotlin.analyzer.common.CommonPlatformAnalyzerServices
 import org.jetbrains.kotlin.backend.common.extensions.IrGenerationExtension
 import org.jetbrains.kotlin.backend.jvm.JvmIrCodegenFactory
 import org.jetbrains.kotlin.backend.jvm.JvmIrDeserializerImpl
@@ -44,7 +43,9 @@ import org.jetbrains.kotlin.codegen.state.GenerationState
 import org.jetbrains.kotlin.config.*
 import org.jetbrains.kotlin.diagnostics.DiagnosticReporter
 import org.jetbrains.kotlin.diagnostics.DiagnosticReporterFactory
+import org.jetbrains.kotlin.fir.BinaryModuleData
 import org.jetbrains.kotlin.fir.DependencyListForCliModule
+import org.jetbrains.kotlin.fir.FirModuleDataImpl
 import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.backend.jvm.FirJvmBackendClassResolver
 import org.jetbrains.kotlin.fir.backend.jvm.FirJvmBackendExtension
@@ -52,10 +53,10 @@ import org.jetbrains.kotlin.fir.backend.jvm.JvmFir2IrExtensions
 import org.jetbrains.kotlin.fir.checkers.registerExtendedCommonCheckers
 import org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrar
 import org.jetbrains.kotlin.fir.java.FirProjectSessionProvider
-import org.jetbrains.kotlin.fir.moduleData
 import org.jetbrains.kotlin.fir.pipeline.*
 import org.jetbrains.kotlin.fir.resolve.providers.FirSymbolProvider
-import org.jetbrains.kotlin.fir.session.FirSessionFactoryHelper
+import org.jetbrains.kotlin.fir.session.FirJvmSessionFactory
+import org.jetbrains.kotlin.fir.session.FirSessionConfigurator
 import org.jetbrains.kotlin.fir.session.IncrementalCompilationContext
 import org.jetbrains.kotlin.fir.session.environment.AbstractProjectEnvironment
 import org.jetbrains.kotlin.fir.session.environment.AbstractProjectFileSearchScope
@@ -71,16 +72,14 @@ import org.jetbrains.kotlin.modules.TargetId
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.platform.CommonPlatforms
-import org.jetbrains.kotlin.platform.TargetPlatform
 import org.jetbrains.kotlin.platform.jvm.JvmPlatforms
 import org.jetbrains.kotlin.progress.ProgressIndicatorAndCompilationCanceledStatus
 import org.jetbrains.kotlin.resolve.ModuleAnnotationsResolver
-import org.jetbrains.kotlin.resolve.PlatformDependentAnalyzerServices
 import org.jetbrains.kotlin.resolve.jvm.modules.JavaModuleResolver
 import org.jetbrains.kotlin.resolve.jvm.platform.JvmPlatformAnalyzerServices
 import org.jetbrains.kotlin.utils.addToStdlib.runIf
 import java.io.File
-import java.util.LinkedHashSet
+import kotlin.reflect.KFunction2
 
 private const val kotlinFileExtensionWithDot = ".${KotlinFileType.EXTENSION}"
 private const val javaFileExtensionWithDot = ".${JavaFileType.DEFAULT_EXTENSION}"
@@ -105,14 +104,6 @@ fun compileModulesUsingFrontendIrAndLightTree(
         "ATTENTION!\n This build uses experimental K2 compiler: \n  -Xuse-k2"
     )
 
-    if (compilerConfiguration.languageVersionSettings.supportsFeature(LanguageFeature.MultiPlatformProjects)) {
-        messageCollector.report(
-            CompilerMessageSeverity.ERROR,
-            "K2 compiler does not support multi-platform projects yet, so please remove -Xuse-k2 flag"
-        )
-        return false
-    }
-
     val outputs = mutableListOf<GenerationState>()
     var mainClassFqName: FqName? = null
 
@@ -148,7 +139,7 @@ fun compileModulesUsingFrontendIrAndLightTree(
 
         // TODO: consider what to do if many modules has main classes
         if (mainClassFqName == null && moduleConfiguration.get(JVMConfigurationKeys.OUTPUT_JAR) != null) {
-            mainClassFqName = findMainClass(analysisResults.fir)
+            mainClassFqName = findMainClass(analysisResults.platformOutput.fir)
         }
 
         if (diagnosticsReporter.hasErrors) {
@@ -225,7 +216,7 @@ fun collectSources(
 
 fun convertAnalyzedFirToIr(
     input: ModuleCompilerInput,
-    analysisResults: ModuleCompilerAnalyzedOutput,
+    analysisResults: FirResult,
     environment: ModuleCompilerEnvironment
 ): ModuleCompilerIrBackendInput {
     val extensions = JvmFir2IrExtensions(input.configuration, JvmIrDeserializerImpl(), JvmIrMangler)
@@ -237,7 +228,7 @@ fun convertAnalyzedFirToIr(
         } ?: emptyList()
     val linkViaSignatures = input.configuration.getBoolean(JVMConfigurationKeys.LINK_VIA_SIGNATURES)
     val (irModuleFragment, components, pluginContext) =
-        analysisResults.convertToIr(extensions, irGenerationExtensions, linkViaSignatures)
+        analysisResults.convertToIrAndActualize(extensions, irGenerationExtensions, linkViaSignatures)
 
     return ModuleCompilerIrBackendInput(
         input.targetId,
@@ -246,7 +237,7 @@ fun convertAnalyzedFirToIr(
         irModuleFragment,
         components.symbolTable,
         components,
-        analysisResults.session,
+        analysisResults.platformOutput.session,
         pluginContext
     )
 }
@@ -310,73 +301,158 @@ fun compileModuleToAnalyzedFir(
     incrementalExcludesScope: AbstractProjectFileSearchScope?,
     diagnosticsReporter: DiagnosticReporter,
     performanceManager: CommonCompilerPerformanceManager?
-): ModuleCompilerAnalyzedOutput {
-    var sourcesScope = environment.projectEnvironment.getSearchScopeBySourceFiles(input.platformSources)
-    val sessionProvider = FirProjectSessionProvider()
-    val extendedAnalysisMode = input.configuration.getBoolean(CommonConfigurationKeys.USE_FIR_EXTENDED_CHECKERS)
+): FirResult {
+    val languageVersionSettings = input.configuration.languageVersionSettings
+    val projectEnvironment = environment.projectEnvironment
+    val moduleConfiguration = input.configuration
+    val isMppEnabled = languageVersionSettings.supportsFeature(LanguageFeature.MultiPlatformProjects)
+    val sourcesScope = environment.projectEnvironment.getSearchScopeBySourceFiles(input.platformSources)
 
-    val commonSession = runIf(
-        input.commonSources.isNotEmpty() && input.configuration.languageVersionSettings.supportsFeature(LanguageFeature.MultiPlatformProjects)
-    ) {
-        val commonSourcesScope = environment.projectEnvironment.getSearchScopeBySourceFiles(input.commonSources)
-        sourcesScope -= commonSourcesScope
-        createSession(
-            "${input.targetId.name}-common",
-            input.commonPlatform,
-            input.configuration,
-            environment.projectEnvironment,
-            commonSourcesScope,
-            CommonPlatformAnalyzerServices,
-            sessionProvider,
+    val commonSourcesScope: AbstractProjectFileSearchScope?
+    val platformSourcesScope: AbstractProjectFileSearchScope
+    if (isMppEnabled) {
+        commonSourcesScope = projectEnvironment.getSearchScopeBySourceFiles(input.commonSources)
+        platformSourcesScope = sourcesScope - commonSourcesScope
+    } else {
+        commonSourcesScope = null
+        platformSourcesScope = sourcesScope
+    }
+
+    var librariesScope = projectEnvironment.getSearchScopeForProjectLibraries()
+    val commonProviderAndScopeForIncrementalCompilation = runIf(isMppEnabled) {
+        createContextForIncrementalCompilation(
+            moduleConfiguration,
+            projectEnvironment,
+            commonSourcesScope!!,
             previousStepsSymbolProviders,
-            incrementalExcludesScope,
-            extendedAnalysisMode,
-            needRegisterJavaElementFinder = false
+            incrementalExcludesScope
+        )?.also { (_, _, precompiledBinariesFileScope) ->
+            precompiledBinariesFileScope?.let { librariesScope -= it }
+        }
+    }
+    val platformProviderAndScopeForIncrementalCompilation = createContextForIncrementalCompilation(
+        moduleConfiguration,
+        projectEnvironment,
+        platformSourcesScope,
+        previousStepsSymbolProviders,
+        incrementalExcludesScope
+    )?.also { (_, _, precompiledBinariesFileScope) ->
+        precompiledBinariesFileScope?.let { librariesScope -= it }
+    }
+
+    val sessionProvider = FirProjectSessionProvider()
+    val moduleName = input.targetId.name
+
+    val libraryList = createLibraryListAndSession(moduleName, input.configuration, projectEnvironment, librariesScope, sessionProvider)
+
+    val commonModuleData = runIf(isMppEnabled) {
+        FirModuleDataImpl(
+            Name.identifier("${moduleName}-common"),
+            libraryList.regularDependencies,
+            listOf(),
+            libraryList.friendsDependencies,
+            JvmPlatforms.unspecifiedJvmPlatform,
+            JvmPlatformAnalyzerServices
         )
     }
+    val platformModuleData = FirModuleDataImpl(
+        Name.identifier(moduleName),
+        libraryList.regularDependencies,
+        listOfNotNull(commonModuleData),
+        libraryList.friendsDependencies,
+        JvmPlatforms.unspecifiedJvmPlatform,
+        JvmPlatformAnalyzerServices
+    )
 
-    val session = createSession(
-        input.targetId.name,
-        input.platform,
-        input.configuration,
-        environment.projectEnvironment,
-        sourcesScope,
-        JvmPlatformAnalyzerServices,
-        sessionProvider,
-        previousStepsSymbolProviders,
-        incrementalExcludesScope,
-        extendedAnalysisMode,
-        needRegisterJavaElementFinder = true
-    ) {
-        if (commonSession != null) {
-            sourceDependsOnDependencies(listOf(commonSession.moduleData))
+    val extensionRegistrars = (projectEnvironment as? VfsBasedProjectEnvironment)?.let { FirExtensionRegistrar.getInstances(it.project) }
+        ?: emptyList()
+    val lookupTracker = moduleConfiguration.get(CommonConfigurationKeys.LOOKUP_TRACKER)
+    val enumWhenTracker = moduleConfiguration.get(CommonConfigurationKeys.ENUM_WHEN_TRACKER)
+    val extendedAnalysisMode = input.configuration.getBoolean(CommonConfigurationKeys.USE_FIR_EXTENDED_CHECKERS)
+    val sessionConfigurator: FirSessionConfigurator.() -> Unit = {
+        if (extendedAnalysisMode) {
+            registerExtendedCommonCheckers()
         }
-        friendDependencies(input.configuration[JVMConfigurationKeys.FRIEND_PATHS] ?: emptyList())
-        sourceFriendsDependencies(input.friendFirModules)
     }
+    val javaSourcesScope = projectEnvironment.getSearchScopeForProjectJavaSources()
+
+    val commonSession = runIf(isMppEnabled) {
+        FirJvmSessionFactory.createModuleBasedSession(
+            commonModuleData!!,
+            sessionProvider,
+            javaSourcesScope,
+            projectEnvironment,
+            commonProviderAndScopeForIncrementalCompilation,
+            extensionRegistrars,
+            languageVersionSettings,
+            lookupTracker,
+            enumWhenTracker,
+            needRegisterJavaElementFinder = true,
+            registerExtraComponents = {},
+            sessionConfigurator,
+        )
+    }
+    val platformSession = FirJvmSessionFactory.createModuleBasedSession(
+        platformModuleData,
+        sessionProvider,
+        javaSourcesScope,
+        projectEnvironment,
+        platformProviderAndScopeForIncrementalCompilation,
+        extensionRegistrars,
+        languageVersionSettings,
+        lookupTracker,
+        enumWhenTracker,
+        needRegisterJavaElementFinder = true,
+        registerExtraComponents = {},
+        sessionConfigurator
+    )
 
     val countFilesAndLines = if (performanceManager == null) null else performanceManager::addSourcesStats
+    val commonOutput = commonSession?.let { buildResolveAndCheckFir(it, input.commonSources, diagnosticsReporter, countFilesAndLines) }
+    val platformOutput = buildResolveAndCheckFir(platformSession, input.platformSources, diagnosticsReporter, countFilesAndLines)
 
-    // raw fir
-    val commonRawFir = commonSession?.buildFirViaLightTree(
-        input.commonSources,
-        diagnosticsReporter,
-        countFilesAndLines
+    return FirResult(platformOutput, commonOutput)
+}
+
+fun createLibraryListAndSession(
+    moduleName: String,
+    configuration: CompilerConfiguration,
+    projectEnvironment: AbstractProjectEnvironment,
+    librariesScope: AbstractProjectFileSearchScope,
+    sessionProvider: FirProjectSessionProvider
+): DependencyListForCliModule {
+    val binaryModuleData = BinaryModuleData.initialize(
+        Name.identifier(moduleName),
+        JvmPlatforms.unspecifiedJvmPlatform,
+        JvmPlatformAnalyzerServices
     )
-    val rawFir =
-        session.buildFirViaLightTree(input.platformSources, diagnosticsReporter, countFilesAndLines)
-
-    // resolution
-    commonSession?.apply {
-        val (commonScopeSession, commonFir) = runResolution(commonRawFir!!)
-        // TODO: find out what to do with commonFir
-        runCheckers(commonScopeSession, commonFir, environment.diagnosticsReporter)
+    val libraryList = DependencyListForCliModule.build(binaryModuleData) {
+        dependencies(configuration.jvmClasspathRoots.map { it.toPath() })
+        dependencies(configuration.jvmModularRoots.map { it.toPath() })
+        friendDependencies(configuration[JVMConfigurationKeys.FRIEND_PATHS] ?: emptyList())
     }
+    FirJvmSessionFactory.createLibrarySession(
+        Name.identifier(moduleName),
+        sessionProvider,
+        libraryList.moduleDataProvider,
+        projectEnvironment,
+        projectEnvironment.getSearchScopeForProjectLibraries(),
+        projectEnvironment.getPackagePartProvider(librariesScope),
+        configuration.languageVersionSettings,
+        registerExtraComponents = {},
+    )
+    return libraryList
+}
 
-    val (scopeSession, fir) = session.runResolution(rawFir)
-    // checkers
-    session.runCheckers(scopeSession, fir, environment.diagnosticsReporter)
-
+private fun buildResolveAndCheckFir(
+    session: FirSession,
+    ktFiles: Collection<KtSourceFile>,
+    diagnosticsReporter: DiagnosticReporter,
+    countFilesAndLines: KFunction2<Int, Int, Unit>?
+): ModuleCompilerAnalyzedOutput {
+    val firFiles = session.buildFirViaLightTree(ktFiles, diagnosticsReporter, countFilesAndLines)
+    val (scopeSession, fir) = session.runResolution(firFiles)
+    session.runCheckers(scopeSession, fir, diagnosticsReporter)
     return ModuleCompilerAnalyzedOutput(session, scopeSession, fir)
 }
 
@@ -413,63 +489,7 @@ fun writeOutputs(
     return true
 }
 
-fun createSession(
-    name: String,
-    platform: TargetPlatform,
-    moduleConfiguration: CompilerConfiguration,
-    projectEnvironment: AbstractProjectEnvironment,
-    sourceScope: AbstractProjectFileSearchScope,
-    analyzerServices: PlatformDependentAnalyzerServices,
-    sessionProvider: FirProjectSessionProvider?,
-    previousStepsSymbolProviders: List<FirSymbolProvider>,
-    incrementalExcludesScope: AbstractProjectFileSearchScope?,
-    extendedAnalysisMode: Boolean,
-    needRegisterJavaElementFinder: Boolean,
-    dependenciesConfigurator: DependencyListForCliModule.Builder.() -> Unit = {},
-): FirSession {
-    var librariesScope = projectEnvironment.getSearchScopeForProjectLibraries()
-
-    val providerAndScopeForIncrementalCompilation =
-        createContextForIncrementalCompilation(
-            moduleConfiguration,
-            projectEnvironment,
-            sourceScope,
-            previousStepsSymbolProviders,
-            incrementalExcludesScope
-        )
-            ?.also { (_, _, precompiledBinariesFileScope) ->
-                precompiledBinariesFileScope?.let { librariesScope -= it }
-            }
-
-    return FirSessionFactoryHelper.createSessionWithDependencies(
-        Name.identifier(name),
-        platform,
-        analyzerServices,
-        externalSessionProvider = sessionProvider,
-        projectEnvironment,
-        moduleConfiguration.languageVersionSettings,
-        projectEnvironment.getSearchScopeForProjectJavaSources(),
-        librariesScope,
-        lookupTracker = moduleConfiguration.get(CommonConfigurationKeys.LOOKUP_TRACKER),
-        enumWhenTracker = moduleConfiguration.get(CommonConfigurationKeys.ENUM_WHEN_TRACKER),
-        providerAndScopeForIncrementalCompilation,
-        extensionRegistrars = (projectEnvironment as? VfsBasedProjectEnvironment)?.let { FirExtensionRegistrar.getInstances(it.project) }
-            ?: emptyList(),
-        needRegisterJavaElementFinder = needRegisterJavaElementFinder,
-        dependenciesConfigurator = {
-            dependencies(moduleConfiguration.jvmClasspathRoots.map { it.toPath() })
-            dependencies(moduleConfiguration.jvmModularRoots.map { it.toPath() })
-            friendDependencies(moduleConfiguration[JVMConfigurationKeys.FRIEND_PATHS] ?: emptyList())
-            dependenciesConfigurator()
-        }
-    ) {
-        if (extendedAnalysisMode) {
-            registerExtendedCommonCheckers()
-        }
-    }
-}
-
-private fun createContextForIncrementalCompilation(
+fun createContextForIncrementalCompilation(
     compilerConfiguration: CompilerConfiguration,
     projectEnvironment: AbstractProjectEnvironment,
     sourceScope: AbstractProjectFileSearchScope,

compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/DependencyListForCliModule.kt

@@ -9,117 +9,66 @@ import org.jetbrains.kotlin.fir.deserialization.LibraryPathFilter
 import org.jetbrains.kotlin.fir.deserialization.ModuleDataProvider
 import org.jetbrains.kotlin.fir.deserialization.MultipleModuleDataProvider
 import org.jetbrains.kotlin.fir.deserialization.SingleModuleDataProvider
-import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.platform.TargetPlatform
-import org.jetbrains.kotlin.resolve.PlatformDependentAnalyzerServices
 import java.nio.file.Path
 import java.nio.file.Paths
 
 class DependencyListForCliModule(
-    val platform: TargetPlatform,
-    val analyzerServices: PlatformDependentAnalyzerServices,
     val regularDependencies: List<FirModuleData>,
     val dependsOnDependencies: List<FirModuleData>,
     val friendsDependencies: List<FirModuleData>,
     val moduleDataProvider: ModuleDataProvider,
 ) {
     companion object {
-        fun createDependencyModuleData(
-            name: Name,
-            platform: TargetPlatform,
-            analyzerServices: PlatformDependentAnalyzerServices
-        ): FirModuleData {
-            return FirModuleDataImpl(
-                name,
-                dependencies = emptyList(),
-                dependsOnDependencies = emptyList(),
-                friendDependencies = emptyList(),
-                platform,
-                analyzerServices,
-            )
-        }
-
-        inline fun build(
-            mainModuleName: Name,
-            platform: TargetPlatform,
-            analyzerServices: PlatformDependentAnalyzerServices,
-            init: Builder.() -> Unit = {}
-        ): DependencyListForCliModule {
-            return Builder(mainModuleName, platform, analyzerServices).apply(init).build()
+        inline fun build(binaryModuleData: BinaryModuleData, init: Builder.() -> Unit = {}): DependencyListForCliModule {
+            return Builder(binaryModuleData).apply(init).build()
         }
     }
 
-    class Builder(val mainModuleName: Name, val platform: TargetPlatform, val analyzerServices: PlatformDependentAnalyzerServices) {
-        private fun createData(name: String): FirModuleData = createDependencyModuleData(Name.special(name), platform, analyzerServices)
-
-        private val binaryRegularDependenciesModuleData: FirModuleData = createData("<regular dependencies of $mainModuleName>")
-        private val binaryDependsOnModuleData: FirModuleData = createData("<dependsOn dependencies of $mainModuleName")
-        private val binaryFriendsModuleData: FirModuleData = createData("<friends dependencies of $mainModuleName")
-
+    class Builder(val binaryModuleData: BinaryModuleData) {
         private val allRegularDependencies = mutableListOf<FirModuleData>()
         private val allFriendsDependencies = mutableListOf<FirModuleData>()
         private val allDependsOnDependencies = mutableListOf<FirModuleData>()
 
         private val filtersMap: Map<FirModuleData, MutableSet<Path>> =
             listOf(
-                binaryDependsOnModuleData,
-                binaryFriendsModuleData,
-                binaryRegularDependenciesModuleData
-            ).map { it to mutableSetOf<Path>() }.toMap()
+                binaryModuleData.dependsOn,
+                binaryModuleData.friends,
+                binaryModuleData.regular
+            ).associateWith { mutableSetOf() }
 
         fun dependency(vararg path: Path) {
-            filtersMap.getValue(binaryRegularDependenciesModuleData) += path
-        }
-
-        fun friendDependency(vararg path: Path) {
-            filtersMap.getValue(binaryFriendsModuleData) += path
-        }
-
-        fun dependsOnDependency(vararg path: Path) {
-            filtersMap.getValue(binaryDependsOnModuleData) += path
+            filtersMap.getValue(binaryModuleData.regular) += path
         }
 
         fun dependency(vararg path: String) {
-            path.mapTo(filtersMap.getValue(binaryRegularDependenciesModuleData)) { Paths.get(it) }
-        }
-
-        fun friendDependency(vararg path: String) {
-            path.mapTo(filtersMap.getValue(binaryFriendsModuleData)) { Paths.get(it) }
-        }
-
-        fun dependsOnDependency(vararg path: String) {
-            path.mapTo(filtersMap.getValue(binaryDependsOnModuleData)) { Paths.get(it) }
+            path.mapTo(filtersMap.getValue(binaryModuleData.regular)) { Paths.get(it) }
         }
 
         @JvmName("dependenciesString")
         fun dependencies(paths: Collection<String>) {
-            paths.mapTo(filtersMap.getValue(binaryRegularDependenciesModuleData)) { Paths.get(it) }
+            paths.mapTo(filtersMap.getValue(binaryModuleData.regular)) { Paths.get(it) }
         }
 
         @JvmName("friendDependenciesString")
         fun friendDependencies(paths: Collection<String>) {
-            paths.mapTo(filtersMap.getValue(binaryFriendsModuleData)) { Paths.get(it) }
+            paths.mapTo(filtersMap.getValue(binaryModuleData.friends)) { Paths.get(it) }
         }
 
         @JvmName("dependsOnDependenciesString")
         fun dependsOnDependencies(paths: Collection<String>) {
-            paths.mapTo(filtersMap.getValue(binaryDependsOnModuleData)) { Paths.get(it) }
+            paths.mapTo(filtersMap.getValue(binaryModuleData.dependsOn)) { Paths.get(it) }
         }
 
         fun dependencies(paths: Collection<Path>) {
-            filtersMap.getValue(binaryRegularDependenciesModuleData) += paths
+            filtersMap.getValue(binaryModuleData.regular) += paths
         }
 
         fun friendDependencies(paths: Collection<Path>) {
-            filtersMap.getValue(binaryFriendsModuleData) += paths
+            filtersMap.getValue(binaryModuleData.friends) += paths
         }
 
         fun dependsOnDependencies(paths: Collection<Path>) {
-            filtersMap.getValue(binaryDependsOnModuleData) += paths
-        }
-
-        fun sourceDependencies(modules: Collection<FirModuleData>) {
-            allRegularDependencies += modules
+            filtersMap.getValue(binaryModuleData.dependsOn) += paths
         }
 
         fun sourceFriendsDependencies(modules: Collection<FirModuleData>) {
@@ -136,29 +85,25 @@ class DependencyListForCliModule(
                 .mapValues { LibraryPathFilter.LibraryList(it.value) }
                 .toMutableMap()
 
-            allRegularDependencies += binaryRegularDependenciesModuleData
+            allRegularDependencies += binaryModuleData.regular
             if (pathFiltersMap.isEmpty()) {
                 return DependencyListForCliModule(
-                    platform,
-                    analyzerServices,
                     allRegularDependencies,
                     dependsOnDependencies = allDependsOnDependencies,
                     friendsDependencies = allFriendsDependencies,
-                    SingleModuleDataProvider(binaryRegularDependenciesModuleData)
+                    SingleModuleDataProvider(binaryModuleData.regular)
                 )
             }
-            if (binaryFriendsModuleData in pathFiltersMap) {
-                allFriendsDependencies += binaryFriendsModuleData
+            if (binaryModuleData.friends in pathFiltersMap) {
+                allFriendsDependencies += binaryModuleData.friends
             }
-            if (binaryDependsOnModuleData in pathFiltersMap) {
-                allDependsOnDependencies += binaryDependsOnModuleData
+            if (binaryModuleData.dependsOn in pathFiltersMap) {
+                allDependsOnDependencies += binaryModuleData.dependsOn
             }
 
             val moduleDataProvider = MultipleModuleDataProvider(pathFiltersMap)
-            pathFiltersMap.putIfAbsent(binaryRegularDependenciesModuleData, LibraryPathFilter.TakeAll)
+            pathFiltersMap.putIfAbsent(binaryModuleData.regular, LibraryPathFilter.TakeAll)
             return DependencyListForCliModule(
-                platform,
-                analyzerServices,
                 allRegularDependencies,
                 allDependsOnDependencies,
                 allFriendsDependencies,

compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/pipeline/convertToIr.kt

@@ -9,6 +9,7 @@ import org.jetbrains.kotlin.backend.common.extensions.IrGenerationExtension
 import org.jetbrains.kotlin.backend.jvm.serialization.JvmIdSignatureDescriptor
 import org.jetbrains.kotlin.builtins.DefaultBuiltIns
 import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.backend.Fir2IrComponents
 import org.jetbrains.kotlin.fir.backend.Fir2IrConverter
 import org.jetbrains.kotlin.fir.backend.Fir2IrExtensions
 import org.jetbrains.kotlin.fir.backend.Fir2IrResult
@@ -17,34 +18,65 @@ import org.jetbrains.kotlin.fir.backend.jvm.FirJvmKotlinMangler
 import org.jetbrains.kotlin.fir.backend.jvm.FirJvmVisibilityConverter
 import org.jetbrains.kotlin.fir.declarations.FirFile
 import org.jetbrains.kotlin.fir.languageVersionSettings
-import org.jetbrains.kotlin.fir.moduleData
 import org.jetbrains.kotlin.fir.resolve.ScopeSession
-import org.jetbrains.kotlin.fir.resolve.providers.firProvider
-import org.jetbrains.kotlin.fir.resolve.providers.impl.FirProviderImpl
 import org.jetbrains.kotlin.ir.backend.jvm.serialization.JvmDescriptorMangler
 import org.jetbrains.kotlin.ir.backend.jvm.serialization.JvmIrMangler
 import org.jetbrains.kotlin.ir.declarations.impl.IrFactoryImpl
 
+data class FirResult(
+    val platformOutput: ModuleCompilerAnalyzedOutput,
+    val commonOutput: ModuleCompilerAnalyzedOutput?
+)
+
 data class ModuleCompilerAnalyzedOutput(
     val session: FirSession,
     val scopeSession: ScopeSession,
     val fir: List<FirFile>
 )
 
-fun ModuleCompilerAnalyzedOutput.convertToIr(
+fun FirResult.convertToIrAndActualize(
     fir2IrExtensions: Fir2IrExtensions,
     irGeneratorExtensions: Collection<IrGenerationExtension>,
-    linkViaSignatures: Boolean
+    linkViaSignatures: Boolean,
 ): Fir2IrResult {
-    val commonFirFiles = session.moduleData.dependsOnDependencies
-        .map { it.session }
-        .filter { it.kind == FirSession.Kind.Source }
-        .flatMap { (it.firProvider as FirProviderImpl).getAllFirFiles() }
+    val result: Fir2IrResult
 
+    if (commonOutput != null) {
+        val commonIrOutput = commonOutput.convertToIr(
+            fir2IrExtensions,
+            irGeneratorExtensions,
+            linkViaSignatures = true,
+            dependentComponents = emptyList()
+        )
+        result = platformOutput.convertToIr(
+            fir2IrExtensions,
+            irGeneratorExtensions,
+            linkViaSignatures = true,
+            dependentComponents = listOf(commonIrOutput.components)
+        )
+        // TODO: implement IR actualization
+    } else {
+        result = platformOutput.convertToIr(
+            fir2IrExtensions,
+            irGeneratorExtensions,
+            linkViaSignatures = linkViaSignatures,
+            dependentComponents = emptyList()
+        )
+    }
+
+    return result
+}
+
+private fun ModuleCompilerAnalyzedOutput.convertToIr(
+    fir2IrExtensions: Fir2IrExtensions,
+    irGeneratorExtensions: Collection<IrGenerationExtension>,
+    linkViaSignatures: Boolean,
+    dependentComponents: List<Fir2IrComponents>
+): Fir2IrResult {
     if (linkViaSignatures) {
         val signaturer = JvmIdSignatureDescriptor(mangler = JvmDescriptorMangler(mainDetector = null))
         return Fir2IrConverter.createModuleFragmentWithSignaturesIfNeeded(
-            session, scopeSession, fir + commonFirFiles,
+            session, scopeSession, fir,
             session.languageVersionSettings, signaturer, fir2IrExtensions,
             FirJvmKotlinMangler(session),
             JvmIrMangler, IrFactoryImpl, FirJvmVisibilityConverter,
@@ -55,7 +87,7 @@ fun ModuleCompilerAnalyzedOutput.convertToIr(
         )
     } else {
         return Fir2IrConverter.createModuleFragmentWithoutSignatures(
-            session, scopeSession, fir + commonFirFiles,
+            session, scopeSession, fir,
             session.languageVersionSettings, fir2IrExtensions,
             FirJvmKotlinMangler(session),
             JvmIrMangler, IrFactoryImpl, FirJvmVisibilityConverter,

compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/session/FirAbstractSessionFactory.kt

@@ -6,17 +6,13 @@
 package org.jetbrains.kotlin.fir.session
 
 import org.jetbrains.kotlin.config.LanguageVersionSettings
-import org.jetbrains.kotlin.config.LanguageVersionSettingsImpl
 import org.jetbrains.kotlin.fir.*
-import org.jetbrains.kotlin.fir.analysis.FirOverridesBackwardCompatibilityHelper
 import org.jetbrains.kotlin.fir.checkers.registerCommonCheckers
-import org.jetbrains.kotlin.fir.checkers.registerJsCheckers
 import org.jetbrains.kotlin.fir.deserialization.ModuleDataProvider
 import org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrar
 import org.jetbrains.kotlin.fir.extensions.FirSwitchableExtensionDeclarationsSymbolProvider
 import org.jetbrains.kotlin.fir.java.FirCliSession
 import org.jetbrains.kotlin.fir.java.FirProjectSessionProvider
-import org.jetbrains.kotlin.fir.resolve.calls.ConeCallConflictResolverFactory
 import org.jetbrains.kotlin.fir.resolve.providers.FirDependenciesSymbolProvider
 import org.jetbrains.kotlin.fir.resolve.providers.FirProvider
 import org.jetbrains.kotlin.fir.resolve.providers.FirSymbolProvider
@@ -25,7 +21,6 @@ import org.jetbrains.kotlin.fir.resolve.providers.impl.FirDependenciesSymbolProv
 import org.jetbrains.kotlin.fir.resolve.providers.impl.FirLibrarySessionProvider
 import org.jetbrains.kotlin.fir.resolve.providers.impl.FirProviderImpl
 import org.jetbrains.kotlin.fir.scopes.FirKotlinScopeProvider
-import org.jetbrains.kotlin.fir.scopes.FirPlatformClassMapper
 import org.jetbrains.kotlin.incremental.components.EnumWhenTracker
 import org.jetbrains.kotlin.incremental.components.LookupTracker
 import org.jetbrains.kotlin.name.Name
@@ -54,12 +49,12 @@ abstract class FirAbstractSessionFactory {
             val kotlinScopeProvider = createKotlinScopeProvider.invoke()
             register(FirKotlinScopeProvider::class, kotlinScopeProvider)
 
-            val builtinsModuleData = DependencyListForCliModule.createDependencyModuleData(
+            val builtinsModuleData = BinaryModuleData.createDependencyModuleData(
                 Name.special("<builtins of ${mainModuleName.asString()}"),
                 moduleDataProvider.platform,
                 moduleDataProvider.analyzerServices,
             )
-            builtinsModuleData.bindSession(this@session)
+            builtinsModuleData.bindSession(this)
 
             val providers = createProviders(this, builtinsModuleData, kotlinScopeProvider)
 

compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/session/FirJvmSessionFactory.kt

@@ -9,6 +9,7 @@ import org.jetbrains.kotlin.config.*
 import org.jetbrains.kotlin.fir.*
 import org.jetbrains.kotlin.fir.checkers.registerJvmCheckers
 import org.jetbrains.kotlin.fir.declarations.FirDeclarationOrigin
+import org.jetbrains.kotlin.fir.deserialization.ModuleDataProvider
 import org.jetbrains.kotlin.fir.deserialization.SingleModuleDataProvider
 import org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrar
 import org.jetbrains.kotlin.fir.java.FirProjectSessionProvider
@@ -29,7 +30,7 @@ object FirJvmSessionFactory : FirAbstractSessionFactory() {
     fun createLibrarySession(
         mainModuleName: Name,
         sessionProvider: FirProjectSessionProvider,
-        dependencyList: DependencyListForCliModule,
+        moduleDataProvider: ModuleDataProvider,
         projectEnvironment: AbstractProjectEnvironment,
         scope: AbstractProjectFileSearchScope,
         packagePartProvider: PackagePartProvider,
@@ -39,7 +40,7 @@ object FirJvmSessionFactory : FirAbstractSessionFactory() {
         return createLibrarySession(
             mainModuleName,
             sessionProvider,
-            dependencyList.moduleDataProvider,
+            moduleDataProvider,
             languageVersionSettings,
             registerExtraComponents = {
                 it.registerCommonJavaComponents(projectEnvironment.getJavaModuleResolver())
@@ -50,15 +51,20 @@ object FirJvmSessionFactory : FirAbstractSessionFactory() {
                 listOf(
                     JvmClassFileBasedSymbolProvider(
                         session,
-                        dependencyList.moduleDataProvider,
+                        moduleDataProvider,
                         kotlinScopeProvider,
                         packagePartProvider,
                         projectEnvironment.getKotlinClassFinder(scope),
-                        projectEnvironment.getFirJavaFacade(session, dependencyList.moduleDataProvider.allModuleData.last(), scope)
+                        projectEnvironment.getFirJavaFacade(session, moduleDataProvider.allModuleData.last(), scope)
                     ),
                     FirBuiltinSymbolProvider(session, builtinsModuleData, kotlinScopeProvider),
                     FirCloneableSymbolProvider(session, builtinsModuleData, kotlinScopeProvider),
-                    OptionalAnnotationClassesProvider(session, dependencyList.moduleDataProvider, kotlinScopeProvider, packagePartProvider)
+                    OptionalAnnotationClassesProvider(
+                        session,
+                        moduleDataProvider,
+                        kotlinScopeProvider,
+                        packagePartProvider
+                    )
                 )
             }
         )

compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/session/FirNativeSessionFactory.kt

@@ -9,6 +9,7 @@ import org.jetbrains.kotlin.config.LanguageVersionSettings
 import org.jetbrains.kotlin.fir.*
 import org.jetbrains.kotlin.fir.analysis.FirOverridesBackwardCompatibilityHelper
 import org.jetbrains.kotlin.fir.checkers.registerNativeCheckers
+import org.jetbrains.kotlin.fir.deserialization.ModuleDataProvider
 import org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrar
 import org.jetbrains.kotlin.fir.java.FirProjectSessionProvider
 import org.jetbrains.kotlin.fir.resolve.calls.ConeCallConflictResolverFactory
@@ -24,11 +25,10 @@ object FirNativeSessionFactory : FirAbstractSessionFactory() {
         mainModuleName: Name,
         resolvedLibraries: List<KotlinResolvedLibrary>,
         sessionProvider: FirProjectSessionProvider,
-        dependencyListForCliModule: DependencyListForCliModule,
+        moduleDataProvider: ModuleDataProvider,
         languageVersionSettings: LanguageVersionSettings,
         registerExtraComponents: ((FirSession) -> Unit) = {},
     ): FirSession {
-        val moduleDataProvider = dependencyListForCliModule.moduleDataProvider
         return createLibrarySession(
             mainModuleName,
             sessionProvider,

compiler/fir/entrypoint/src/org/jetbrains/kotlin/fir/session/FirSessionFactoryHelper.kt

@@ -38,13 +38,14 @@ object FirSessionFactoryHelper {
         dependenciesConfigurator: DependencyListForCliModule.Builder.() -> Unit = {},
         noinline sessionConfigurator: FirSessionConfigurator.() -> Unit = {},
     ): FirSession {
-        val dependencyList = DependencyListForCliModule.build(moduleName, platform, analyzerServices, dependenciesConfigurator)
+        val binaryModuleData = BinaryModuleData.initialize(moduleName, platform, analyzerServices)
+        val dependencyList = DependencyListForCliModule.build(binaryModuleData, init = dependenciesConfigurator)
         val sessionProvider = externalSessionProvider ?: FirProjectSessionProvider()
         val packagePartProvider = projectEnvironment.getPackagePartProvider(librariesScope)
         FirJvmSessionFactory.createLibrarySession(
             moduleName,
             sessionProvider,
-            dependencyList,
+            dependencyList.moduleDataProvider,
             projectEnvironment,
             librariesScope,
             packagePartProvider,
@@ -57,8 +58,8 @@ object FirSessionFactoryHelper {
             dependencyList.regularDependencies,
             dependencyList.dependsOnDependencies,
             dependencyList.friendsDependencies,
-            dependencyList.platform,
-            dependencyList.analyzerServices
+            platform,
+            analyzerServices
         )
         return FirJvmSessionFactory.createModuleBasedSession(
             mainModuleData,

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/IncrementalFirJvmCompilerRunner.kt

@@ -48,7 +48,9 @@ import org.jetbrains.kotlin.fir.backend.jvm.FirJvmVisibilityConverter
 import org.jetbrains.kotlin.fir.backend.jvm.JvmFir2IrExtensions
 import org.jetbrains.kotlin.fir.languageVersionSettings
 import org.jetbrains.kotlin.fir.moduleData
+import org.jetbrains.kotlin.fir.pipeline.FirResult
 import org.jetbrains.kotlin.fir.pipeline.ModuleCompilerAnalyzedOutput
+import org.jetbrains.kotlin.fir.pipeline.convertToIrAndActualize
 import org.jetbrains.kotlin.fir.resolve.providers.firProvider
 import org.jetbrains.kotlin.fir.resolve.providers.impl.FirProviderImpl
 import org.jetbrains.kotlin.fir.session.environment.AbstractProjectFileSearchScope
@@ -203,7 +205,7 @@ class IncrementalFirJvmCompilerRunner(
 
             var incrementalExcludesScope: AbstractProjectFileSearchScope? = null
 
-            fun firIncrementalCycle(): ModuleCompilerAnalyzedOutput? {
+            fun firIncrementalCycle(): FirResult? {
                 while (true) {
 
                     val compilerInput = ModuleCompilerInput(
@@ -229,7 +231,7 @@ class IncrementalFirJvmCompilerRunner(
 
                     // TODO: consider what to do if many compilations find a main class
                     if (mainClassFqName == null && configuration.get(JVMConfigurationKeys.OUTPUT_JAR) != null) {
-                        mainClassFqName = findMainClass(analysisResults.fir)
+                        mainClassFqName = findMainClass(analysisResults.platformOutput.fir)
                     }
 
                     // TODO: switch the whole IC to KtSourceFile instead of FIle
@@ -273,19 +275,7 @@ class IncrementalFirJvmCompilerRunner(
             val extensions = JvmFir2IrExtensions(configuration, JvmIrDeserializerImpl(), JvmIrMangler)
             val irGenerationExtensions =
                 (projectEnvironment as? VfsBasedProjectEnvironment)?.project?.let { IrGenerationExtension.getInstances(it) }.orEmpty()
-            val allCommonFirFiles = cycleResult.session.moduleData.dependsOnDependencies
-                .map { it.session }
-                .filter { it.kind == FirSession.Kind.Source }
-                .flatMap { (it.firProvider as FirProviderImpl).getAllFirFiles() }
-
-            val (irModuleFragment, components, pluginContext) = Fir2IrConverter.createModuleFragmentWithoutSignatures(
-                cycleResult.session, cycleResult.scopeSession, cycleResult.fir + allCommonFirFiles,
-                cycleResult.session.languageVersionSettings, extensions,
-                FirJvmKotlinMangler(cycleResult.session), JvmIrMangler, IrFactoryImpl, FirJvmVisibilityConverter,
-                Fir2IrJvmSpecialAnnotationSymbolProvider(),
-                irGenerationExtensions,
-                kotlinBuiltIns = DefaultBuiltIns.Instance // TODO: consider passing externally
-            )
+            val platformIrOutput = cycleResult.convertToIrAndActualize(extensions, irGenerationExtensions, linkViaSignatures = false)
 
             performanceManager?.notifyIRTranslationFinished()
 
@@ -293,11 +283,11 @@ class IncrementalFirJvmCompilerRunner(
                 targetId,
                 configuration,
                 extensions,
-                irModuleFragment,
-                components.symbolTable,
-                components,
-                cycleResult.session,
-                pluginContext
+                platformIrOutput.irModuleFragment,
+                platformIrOutput.components.symbolTable,
+                platformIrOutput.components,
+                cycleResult.platformOutput.session,
+                platformIrOutput.pluginContext
             )
 
             val codegenOutput = generateCodeFromIr(irInput, compilerEnvironment, performanceManager)

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/incrementalFirCacheUtils.kt

@@ -16,6 +16,7 @@ import org.jetbrains.kotlin.fir.backend.FirMetadataSource
 import org.jetbrains.kotlin.fir.backend.jvm.makeLocalFirMetadataSerializerForMetadataSource
 import org.jetbrains.kotlin.fir.declarations.*
 import org.jetbrains.kotlin.fir.declarations.utils.classId
+import org.jetbrains.kotlin.fir.pipeline.FirResult
 import org.jetbrains.kotlin.fir.pipeline.ModuleCompilerAnalyzedOutput
 import org.jetbrains.kotlin.fir.scopes.jvm.computeJvmDescriptor
 import org.jetbrains.kotlin.fir.visitors.FirVisitor
@@ -26,7 +27,7 @@ import org.jetbrains.org.objectweb.asm.commons.Method
 import java.io.File
 
 internal fun collectNewDirtySources(
-    analysisResults: ModuleCompilerAnalyzedOutput,
+    analysisResults: FirResult,
     targetId: TargetId,
     configuration: CompilerConfiguration,
     caches: IncrementalJvmCachesManager,
@@ -35,96 +36,101 @@ internal fun collectNewDirtySources(
 ): LinkedHashSet<File> {
     val changesCollector = ChangesCollector()
     val globalSerializationBindings = JvmSerializationBindings()
-    analysisResults.fir.forEach {
-        it.accept(object : FirVisitor<Unit, MutableList<MetadataSerializer>>() {
 
-            inline fun withMetadataSerializer(
-                metadata: FirMetadataSource,
-                data: MutableList<MetadataSerializer>,
-                body: (MetadataSerializer) -> Unit
-            ) {
-                val serializer = makeLocalFirMetadataSerializerForMetadataSource(
-                    metadata,
-                    analysisResults.session,
-                    analysisResults.scopeSession,
-                    globalSerializationBindings,
-                    data.lastOrNull(),
-                    targetId,
-                    configuration
-                )
-                data.push(serializer)
-                body(serializer)
-                data.pop()
-            }
-
-            override fun visitElement(element: FirElement, data: MutableList<MetadataSerializer>) {
-                element.acceptChildren(this, data)
-            }
-
-            override fun visitRegularClass(regularClass: FirRegularClass, data: MutableList<MetadataSerializer>) {
-                visitClass(regularClass, data)
-            }
-
-            override fun visitAnonymousObject(anonymousObject: FirAnonymousObject, data: MutableList<MetadataSerializer>) {
-                visitClass(anonymousObject, data)
-            }
-
-            override fun visitFile(file: FirFile, data: MutableList<MetadataSerializer>) {
-                val metadata = FirMetadataSource.File(listOf(file))
-                withMetadataSerializer(metadata, data) {
-                    file.acceptChildren(this, data)
-                    // TODO: compare package fragments?
-                }
-            }
-
-            override fun visitSimpleFunction(simpleFunction: FirSimpleFunction, data: MutableList<MetadataSerializer>) {
-                data.firstOrNull()?.let { serializer ->
-                    super.visitFunction(simpleFunction, data)
-                    serializer.bindMethodMetadata(
-                        FirMetadataSource.Function(simpleFunction),
-                        Method(simpleFunction.name.asString(), simpleFunction.computeJvmDescriptor())
+    fun visitFirFiles(analyzedOutput: ModuleCompilerAnalyzedOutput) {
+        analyzedOutput.fir.forEach {
+            it.accept(object : FirVisitor<Unit, MutableList<MetadataSerializer>>() {
+                inline fun withMetadataSerializer(
+                    metadata: FirMetadataSource,
+                    data: MutableList<MetadataSerializer>,
+                    body: (MetadataSerializer) -> Unit
+                ) {
+                    val serializer = makeLocalFirMetadataSerializerForMetadataSource(
+                        metadata,
+                        analyzedOutput.session,
+                        analyzedOutput.scopeSession,
+                        globalSerializationBindings,
+                        data.lastOrNull(),
+                        targetId,
+                        configuration
                     )
+                    data.push(serializer)
+                    body(serializer)
+                    data.pop()
                 }
-            }
 
-            override fun visitConstructor(constructor: FirConstructor, data: MutableList<MetadataSerializer>) {
-                super.visitConstructor(constructor, data)
-                data.first().bindMethodMetadata(
-                    FirMetadataSource.Function(constructor),
-                    Method(SpecialNames.INIT.asString(), constructor.computeJvmDescriptor(""))
-                )
-            }
+                override fun visitElement(element: FirElement, data: MutableList<MetadataSerializer>) {
+                    element.acceptChildren(this, data)
+                }
 
-            override fun visitProperty(property: FirProperty, data: MutableList<MetadataSerializer>) {
-                property.acceptChildren(this, data)
-//                    data.firstOrNull()?.let {
-//                        property.acceptChildren(this, data)
-//                        it.bindPropertyMetadata(
-//                            FirMetadataSource.Property(property),
-//                            Method(property.name.asString(), ""),//property.computeJvmDescriptor())
-//                            IrDeclarationOrigin.DEFINED
-//                        )
-//                    }
-            }
+                override fun visitRegularClass(regularClass: FirRegularClass, data: MutableList<MetadataSerializer>) {
+                    visitClass(regularClass, data)
+                }
 
-            override fun visitClass(klass: FirClass, data: MutableList<MetadataSerializer>) {
-                val metadata = FirMetadataSource.Class(klass)
-                withMetadataSerializer(metadata, data) { serializer ->
-                    klass.acceptChildren(this, data)
-                    serializer.serialize(metadata)?.let { (classProto, nameTable) ->
-                        caches.platformCache.saveFrontendClassToCache(
-                            klass.classId,
-                            classProto as ProtoBuf.Class,
-                            nameTable,
-                            null, // TODO: !!
-                            changesCollector
+                override fun visitAnonymousObject(anonymousObject: FirAnonymousObject, data: MutableList<MetadataSerializer>) {
+                    visitClass(anonymousObject, data)
+                }
+
+                override fun visitFile(file: FirFile, data: MutableList<MetadataSerializer>) {
+                    val metadata = FirMetadataSource.File(listOf(file))
+                    withMetadataSerializer(metadata, data) {
+                        file.acceptChildren(this, data)
+                        // TODO: compare package fragments?
+                    }
+                }
+
+                override fun visitSimpleFunction(simpleFunction: FirSimpleFunction, data: MutableList<MetadataSerializer>) {
+                    data.firstOrNull()?.let { serializer ->
+                        super.visitFunction(simpleFunction, data)
+                        serializer.bindMethodMetadata(
+                            FirMetadataSource.Function(simpleFunction),
+                            Method(simpleFunction.name.asString(), simpleFunction.computeJvmDescriptor())
                         )
                     }
                 }
-            }
-        }, mutableListOf())
+
+                override fun visitConstructor(constructor: FirConstructor, data: MutableList<MetadataSerializer>) {
+                    super.visitConstructor(constructor, data)
+                    data.first().bindMethodMetadata(
+                        FirMetadataSource.Function(constructor),
+                        Method(SpecialNames.INIT.asString(), constructor.computeJvmDescriptor(""))
+                    )
+                }
+
+                override fun visitProperty(property: FirProperty, data: MutableList<MetadataSerializer>) {
+                    property.acceptChildren(this, data)
+                    //                    data.firstOrNull()?.let {
+                    //                        property.acceptChildren(this, data)
+                    //                        it.bindPropertyMetadata(
+                    //                            FirMetadataSource.Property(property),
+                    //                            Method(property.name.asString(), ""),//property.computeJvmDescriptor())
+                    //                            IrDeclarationOrigin.DEFINED
+                    //                        )
+                    //                    }
+                }
+
+                override fun visitClass(klass: FirClass, data: MutableList<MetadataSerializer>) {
+                    val metadata = FirMetadataSource.Class(klass)
+                    withMetadataSerializer(metadata, data) { serializer ->
+                        klass.acceptChildren(this, data)
+                        serializer.serialize(metadata)?.let { (classProto, nameTable) ->
+                            caches.platformCache.saveFrontendClassToCache(
+                                klass.classId,
+                                classProto as ProtoBuf.Class,
+                                nameTable,
+                                null, // TODO: !!
+                                changesCollector
+                            )
+                        }
+                    }
+                }
+            }, mutableListOf())
+        }
     }
 
+    analysisResults.commonOutput?.let { visitFirFiles(it) }
+    visitFirFiles(analysisResults.platformOutput)
+
     val (dirtyLookupSymbols, dirtyClassFqNames, forceRecompile) = changesCollector.getDirtyData(listOf(caches.platformCache), reporter)
 
     val forceToRecompileFiles = mapClassesFqNamesToFiles(listOf(caches.platformCache), forceRecompile, reporter)

compiler/testData/diagnostics/tests/multiplatform/headerClass/nestedClasses.fir.kt

@@ -3,9 +3,9 @@
 // FILE: common.kt
 import kotlin.reflect.KProperty
 
-fun <T> lazy(initializer: () -> T): Lazy<T> = <!UNRESOLVED_REFERENCE!>TODO<!>()
+fun <T> lazy(initializer: () -> T): Lazy<T> = TODO()
 interface Lazy<out T> {
-    operator fun getValue(thisRef: Any?, property: KProperty<*>): T = <!UNRESOLVED_REFERENCE!>TODO<!>()
+    operator fun getValue(thisRef: Any?, property: KProperty<*>): T = TODO()
 }
 
 expect class OuterClass {

compiler/testData/diagnostics/tests/multiplatform/headerClass/superClass.fir.kt

@@ -7,7 +7,7 @@ interface J
 
 expect class Foo : I, C, J
 
-<!SUPERTYPE_INITIALIZED_WITHOUT_PRIMARY_CONSTRUCTOR!>expect class Bar : C()<!>
+<!SUPERTYPE_INITIALIZED_WITHOUT_PRIMARY_CONSTRUCTOR, SUPERTYPE_INITIALIZED_WITHOUT_PRIMARY_CONSTRUCTOR!>expect class Bar : C()<!>
 
 // MODULE: m2-jvm()()(m1-common)
 // FILE: jvm.kt

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/TestSetupUtils.kt

@@ -5,6 +5,16 @@
 
 package org.jetbrains.kotlin.test
 
+import org.jetbrains.kotlin.analyzer.common.CommonPlatformAnalyzerServices
+import org.jetbrains.kotlin.js.resolve.JsPlatformAnalyzerServices
+import org.jetbrains.kotlin.platform.TargetPlatform
+import org.jetbrains.kotlin.platform.isCommon
+import org.jetbrains.kotlin.platform.isJs
+import org.jetbrains.kotlin.platform.jvm.isJvm
+import org.jetbrains.kotlin.platform.konan.isNative
+import org.jetbrains.kotlin.resolve.PlatformDependentAnalyzerServices
+import org.jetbrains.kotlin.resolve.jvm.platform.JvmPlatformAnalyzerServices
+import org.jetbrains.kotlin.resolve.konan.platform.NativePlatformAnalyzerServices
 import java.io.File
 
 /**
@@ -22,3 +32,13 @@ private fun computeHomeDirectory(): String {
     val userDir = System.getProperty("user.dir")
     return File(userDir ?: ".").canonicalPath
 }
+
+fun TargetPlatform.getAnalyzerServices(): PlatformDependentAnalyzerServices {
+    return when {
+        isJvm() -> JvmPlatformAnalyzerServices
+        isJs() -> JsPlatformAnalyzerServices
+        isNative() -> NativePlatformAnalyzerServices
+        isCommon() -> CommonPlatformAnalyzerServices
+        else -> error("Unknown target platform: $this")
+    }
+}

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/backend/handlers/JvmBackendDiagnosticsHandler.kt

@@ -41,7 +41,7 @@ class JvmBackendDiagnosticsHandler(testServices: TestServices) : JvmBinaryArtifa
     private fun getKtFiles(module: TestModule): Map<TestFile, KtFile> {
         return when (module.frontendKind) {
             FrontendKinds.ClassicFrontend -> testServices.dependencyProvider.getArtifact(module, FrontendKinds.ClassicFrontend).ktFiles
-            FrontendKinds.FIR -> testServices.dependencyProvider.getArtifact(module, FrontendKinds.FIR).firFiles.entries
+            FrontendKinds.FIR -> testServices.dependencyProvider.getArtifact(module, FrontendKinds.FIR).mainFirFiles.entries
                 .associate { it.key to (it.value.psi as KtFile) }
             else -> testServices.assertions.fail { "Unknown frontend kind ${module.frontendKind}" }
         }

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/backend/handlers/NoFirCompilationErrorsHandler.kt

@@ -22,25 +22,29 @@ class NoFirCompilationErrorsHandler(testServices: TestServices) : FirAnalysisHan
         get() = listOf(CodegenTestDirectives)
 
     override fun processModule(module: TestModule, info: FirOutputArtifact) {
-        var hasError = false
-        val ignoreErrors = IGNORE_FIR_DIAGNOSTICS in module.directives
-        for ((firFile, diagnostics) in info.firAnalyzerFacade.runCheckers()) {
-            for (diagnostic in diagnostics) {
-                if (diagnostic.severity == Severity.ERROR) {
-                    hasError = true
-                    if (!ignoreErrors) {
-                        val diagnosticText = RootDiagnosticRendererFactory(diagnostic).render(diagnostic)
-                        val range = diagnostic.textRanges.first()
-                        val locationText = firFile.source?.psi?.containingFile?.let { psiFile ->
-                            PsiDiagnosticUtils.atLocation(psiFile, range)
-                        } ?: "${firFile.name}:$range"
-                        throw IllegalStateException("${diagnostic.factory.name}: $diagnosticText at $locationText")
+        for (part in info.partsForDependsOnModules) {
+            var hasError = false
+
+            val ignoreErrors = IGNORE_FIR_DIAGNOSTICS in part.module.directives
+            for ((firFile, diagnostics) in part.firAnalyzerFacade.runCheckers()) {
+                for (diagnostic in diagnostics) {
+                    if (diagnostic.severity == Severity.ERROR) {
+                        hasError = true
+                        if (!ignoreErrors) {
+                            val diagnosticText = RootDiagnosticRendererFactory(diagnostic).render(diagnostic)
+                            val range = diagnostic.textRanges.first()
+                            val locationText = firFile.source?.psi?.containingFile?.let { psiFile ->
+                                PsiDiagnosticUtils.atLocation(psiFile, range)
+                            } ?: "${firFile.name}:$range"
+                            throw IllegalStateException("${diagnostic.factory.name}: $diagnosticText at $locationText")
+                        }
                     }
                 }
             }
-        }
-        if (!hasError && ignoreErrors) {
-            assertions.fail { "Test contains $IGNORE_FIR_DIAGNOSTICS directive but no errors was reported. Please remove directive" }
+
+            if (!hasError && ignoreErrors) {
+                assertions.fail { "Test contains $IGNORE_FIR_DIAGNOSTICS directive but no errors was reported. Please remove directive" }
+            }
         }
     }
 

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/backend/ir/IrBackendInput.kt

@@ -14,7 +14,6 @@ import org.jetbrains.kotlin.ir.backend.js.KotlinFileSerializedData
 import org.jetbrains.kotlin.ir.declarations.IrModuleFragment
 import org.jetbrains.kotlin.ir.symbols.IrSymbol
 import org.jetbrains.kotlin.metadata.ProtoBuf
-import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.test.model.BackendKinds
 import org.jetbrains.kotlin.test.model.ResultingArtifact
 
@@ -43,6 +42,7 @@ sealed class IrBackendInput : ResultingArtifact.BackendInput<IrBackendInput>() {
     data class JvmIrBackendInput(
         val state: GenerationState,
         val codegenFactory: JvmIrCodegenFactory,
+        val dependentInputs: List<JvmIrCodegenFactory.JvmIrBackendInput>,
         val backendInput: JvmIrCodegenFactory.JvmIrBackendInput,
         val sourceFiles: List<KtSourceFile>
     ) : IrBackendInput() {

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/backend/ir/JvmIrBackendFacade.kt

@@ -37,7 +37,7 @@ class JvmIrBackendFacade(
         }
         val state = inputArtifact.state
         try {
-            inputArtifact.codegenFactory.generateModule(state, inputArtifact.backendInput)
+            inputArtifact.codegenFactory.generateModule(state, inputArtifact.backendInput.last())
         } catch (e: BackendException) {
             if (CodegenTestDirectives.IGNORE_ERRORS in module.directives) {
                 return null

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/classic/ClassicFrontend2IrConverter.kt

@@ -64,13 +64,14 @@ class ClassicFrontend2IrConverter(
             .diagnosticReporter(DiagnosticReporterFactory.createReporter())
             .build()
 
-        val convertionResult =
+        val conversionResult =
             codegenFactory.convertToIr(CodegenFactory.IrConversionInput.fromGenerationStateAndFiles(state, psiFiles.values))
         return IrBackendInput.JvmIrBackendInput(
             state,
             codegenFactory,
-            convertionResult,
-            emptyList()
+            dependentInputs = emptyList(),
+            conversionResult,
+            sourceFiles = emptyList()
         )
     }
 

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/Fir2IrJsResultsConverter.kt

@@ -69,7 +69,7 @@ class Fir2IrJsResultsConverter(
         val fir2IrExtensions = Fir2IrExtensions.Default
         val firFiles = inputArtifact.allFirFiles.values
         val (irModuleFragment, components, pluginContext) =
-            inputArtifact.firAnalyzerFacade.convertToJsIr(firFiles, fir2IrExtensions, module, configuration, testServices)
+            inputArtifact.partsForDependsOnModules.last().firAnalyzerFacade.convertToJsIr(firFiles, fir2IrExtensions, module, configuration, testServices)
 
         val sourceFiles = firFiles.mapNotNull { it.sourceFile }
         val firFilesBySourceFile = firFiles.associateBy { it.sourceFile }
@@ -81,7 +81,7 @@ class Fir2IrJsResultsConverter(
                 ?: GenerationState.LANGUAGE_TO_METADATA_VERSION.getValue(module.languageVersionSettings.languageVersion)
 
         // At this point, checkers will already have been run by a previous test step. `runCheckers` returns the cached diagnostics map.
-        val diagnosticsMap = inputArtifact.firAnalyzerFacade.runCheckers()
+        val diagnosticsMap = inputArtifact.partsForDependsOnModules.last().firAnalyzerFacade.runCheckers()
         val hasErrors = diagnosticsMap.any { entry -> entry.value.any { it.severity == Severity.ERROR } }
 
         return IrBackendInput.JsIrBackendInput(

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/Fir2IrResultsConverter.kt

@@ -12,7 +12,9 @@ import org.jetbrains.kotlin.cli.jvm.compiler.NoScopeRecordCliBindingTrace
 import org.jetbrains.kotlin.cli.jvm.compiler.TopDownAnalyzerFacadeForJVM
 import org.jetbrains.kotlin.codegen.ClassBuilderFactories
 import org.jetbrains.kotlin.codegen.state.GenerationState
+import org.jetbrains.kotlin.config.LanguageFeature
 import org.jetbrains.kotlin.container.get
+import org.jetbrains.kotlin.fir.backend.Fir2IrComponents
 import org.jetbrains.kotlin.fir.backend.jvm.FirJvmBackendClassResolver
 import org.jetbrains.kotlin.fir.backend.jvm.FirJvmBackendExtension
 import org.jetbrains.kotlin.fir.backend.jvm.JvmFir2IrExtensions
@@ -40,22 +42,18 @@ class Fir2IrResultsConverter(
         module: TestModule,
         inputArtifact: FirOutputArtifact
     ): IrBackendInput {
+        val isMppSupported = module.languageVersionSettings.supportsFeature(LanguageFeature.MultiPlatformProjects)
+
         val compilerConfigurationProvider = testServices.compilerConfigurationProvider
         val configuration = compilerConfigurationProvider.getCompilerConfiguration(module)
 
         val fir2IrExtensions = JvmFir2IrExtensions(configuration, JvmIrDeserializerImpl(), JvmIrMangler)
-        val (irModuleFragment, components, pluginContext) = inputArtifact.firAnalyzerFacade.convertToIr(fir2IrExtensions)
-        val dummyBindingContext = NoScopeRecordCliBindingTrace().bindingContext
-
-        val phaseConfig = configuration.get(CLIConfigurationKeys.PHASE_CONFIG)
-        val codegenFactory = JvmIrCodegenFactory(configuration, phaseConfig)
-
-        // TODO: handle fir from light tree
-        val ktFiles = inputArtifact.firFiles.values.mapNotNull { it.psi as KtFile? }
-        val sourceFiles = inputArtifact.firFiles.values.mapNotNull { it.sourceFile }
 
         // Create and initialize the module and its dependencies
         val project = compilerConfigurationProvider.getProject(module)
+        // TODO: handle fir from light tree
+        val ktFiles = inputArtifact.mainFirFiles.mapNotNull { it.value.psi as KtFile? }
+        val sourceFiles = inputArtifact.mainFirFiles.mapNotNull { it.value.sourceFile }
         val container = TopDownAnalyzerFacadeForJVM.createContainer(
             project, ktFiles, NoScopeRecordCliBindingTrace(), configuration,
             compilerConfigurationProvider.getPackagePartProviderFactory(module),
@@ -63,28 +61,49 @@ class Fir2IrResultsConverter(
             TopDownAnalyzerFacadeForJVM.newModuleSearchScope(project, ktFiles), emptyList()
         )
 
-        val generationState = GenerationState.Builder(
-            project, ClassBuilderFactories.TEST,
-            container.get(), dummyBindingContext, configuration
-        ).isIrBackend(
-            true
-        ).jvmBackendClassResolver(
-            FirJvmBackendClassResolver(components)
-        ).build()
+        val phaseConfig = configuration.get(CLIConfigurationKeys.PHASE_CONFIG)
 
-        return IrBackendInput.JvmIrBackendInput(
-            generationState,
-            codegenFactory,
-            JvmIrCodegenFactory.JvmIrBackendInput(
+        val componentsMap = mutableMapOf<String, Fir2IrComponents>()
+        val dependentIrParts = mutableListOf<JvmIrCodegenFactory.JvmIrBackendInput>()
+        lateinit var mainIrPart: JvmIrCodegenFactory.JvmIrBackendInput
+
+        for ((index, firOutputPart) in inputArtifact.partsForDependsOnModules.withIndex()) {
+            val (irModuleFragment, components, pluginContext) = firOutputPart.firAnalyzerFacade.convertToIr(fir2IrExtensions)
+            componentsMap[firOutputPart.module.name] = components
+
+            val irPart = JvmIrCodegenFactory.JvmIrBackendInput(
                 irModuleFragment,
                 components.symbolTable,
                 phaseConfig,
                 components.irProviders,
                 fir2IrExtensions,
-                FirJvmBackendExtension(inputArtifact.session, components),
+                FirJvmBackendExtension(firOutputPart.session, components),
                 pluginContext,
                 notifyCodegenStart = {},
-            ),
+            )
+
+            if (index < inputArtifact.partsForDependsOnModules.size - 1) {
+                dependentIrParts.add(irPart)
+            } else {
+                mainIrPart = irPart
+            }
+        }
+
+        val codegenFactory = JvmIrCodegenFactory(configuration, phaseConfig)
+        val generationState = GenerationState.Builder(
+            project, ClassBuilderFactories.TEST,
+            container.get(), NoScopeRecordCliBindingTrace().bindingContext, configuration
+        ).isIrBackend(
+            true
+        ).jvmBackendClassResolver(
+            FirJvmBackendClassResolver(componentsMap[module.name]!!)
+        ).build()
+
+        return IrBackendInput.JvmIrBackendInput(
+            generationState,
+            codegenFactory,
+            dependentIrParts,
+            mainIrPart,
             sourceFiles
         )
     }

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/FirFrontendFacade.kt

@@ -5,11 +5,11 @@
 
 package org.jetbrains.kotlin.test.frontend.fir
 
+import com.intellij.openapi.project.Project
 import com.intellij.openapi.vfs.StandardFileSystems
 import com.intellij.openapi.vfs.VirtualFileManager
 import com.intellij.psi.PsiElementFinder
 import com.intellij.psi.search.ProjectScope
-import org.jetbrains.kotlin.analyzer.common.CommonPlatformAnalyzerServices
 import org.jetbrains.kotlin.asJava.finder.JavaElementFinder
 import org.jetbrains.kotlin.backend.common.extensions.IrGenerationExtension
 import org.jetbrains.kotlin.cli.jvm.compiler.PsiBasedProjectFileSearchScope
@@ -19,17 +19,16 @@ import org.jetbrains.kotlin.cli.jvm.config.jvmClasspathRoots
 import org.jetbrains.kotlin.cli.jvm.config.jvmModularRoots
 import org.jetbrains.kotlin.config.CompilerConfiguration
 import org.jetbrains.kotlin.config.JVMConfigurationKeys
+import org.jetbrains.kotlin.config.LanguageFeature
 import org.jetbrains.kotlin.fir.*
 import org.jetbrains.kotlin.fir.checkers.registerExtendedCommonCheckers
+import org.jetbrains.kotlin.fir.deserialization.ModuleDataProvider
 import org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrar
+import org.jetbrains.kotlin.fir.java.FirProjectSessionProvider
 import org.jetbrains.kotlin.fir.session.FirJvmSessionFactory
 import org.jetbrains.kotlin.fir.session.FirNativeSessionFactory
 import org.jetbrains.kotlin.fir.session.FirSessionConfigurator
-import org.jetbrains.kotlin.ir.backend.js.jsResolveLibraries
-import org.jetbrains.kotlin.ir.backend.js.resolverLogger
-import org.jetbrains.kotlin.js.config.JSConfigurationKeys
-import org.jetbrains.kotlin.js.resolve.JsPlatformAnalyzerServices
-import org.jetbrains.kotlin.library.metadata.resolver.KotlinResolvedLibrary
+import org.jetbrains.kotlin.fir.session.environment.AbstractProjectEnvironment
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.platform.TargetPlatform
 import org.jetbrains.kotlin.platform.isCommon
@@ -37,25 +36,22 @@ import org.jetbrains.kotlin.platform.isJs
 import org.jetbrains.kotlin.platform.jvm.isJvm
 import org.jetbrains.kotlin.platform.konan.isNative
 import org.jetbrains.kotlin.psi.KtFile
-import org.jetbrains.kotlin.resolve.PlatformDependentAnalyzerServices
-import org.jetbrains.kotlin.resolve.jvm.platform.JvmPlatformAnalyzerServices
-import org.jetbrains.kotlin.resolve.konan.platform.NativePlatformAnalyzerServices
 import org.jetbrains.kotlin.test.TargetBackend
 import org.jetbrains.kotlin.test.directives.FirDiagnosticsDirectives
 import org.jetbrains.kotlin.test.directives.model.DirectivesContainer
-import org.jetbrains.kotlin.test.model.DependencyRelation
+import org.jetbrains.kotlin.test.getAnalyzerServices
 import org.jetbrains.kotlin.test.model.FrontendFacade
 import org.jetbrains.kotlin.test.model.FrontendKinds
 import org.jetbrains.kotlin.test.model.TestModule
 import org.jetbrains.kotlin.test.services.*
-import org.jetbrains.kotlin.test.services.configuration.JsEnvironmentConfigurator
-import java.io.File
 import java.nio.file.Paths
 
 open class FirFrontendFacade(
     testServices: TestServices,
     private val additionalSessionConfiguration: SessionConfiguration?
 ) : FrontendFacade<FirOutputArtifact>(testServices, FrontendKinds.FIR) {
+    private val testModulesByName by lazy { testServices.moduleStructure.modules.associateBy { it.name } }
+
     // Separate constructor is needed for creating callable references to it
     constructor(testServices: TestServices) : this(testServices, additionalSessionConfiguration = null)
 
@@ -67,53 +63,150 @@ open class FirFrontendFacade(
     override val directiveContainers: List<DirectivesContainer>
         get() = listOf(FirDiagnosticsDirectives)
 
+    override fun shouldRunAnalysis(module: TestModule): Boolean {
+        if (!super.shouldRunAnalysis(module)) return false
+
+        return if (module.languageVersionSettings.supportsFeature(LanguageFeature.MultiPlatformProjects)) {
+            testServices.moduleStructure
+                .modules.none { testModule -> testModule.dependsOnDependencies.any { testModulesByName[it.moduleName] == module } }
+        } else {
+            true
+        }
+    }
+
     open fun registerExtraComponents(session: FirSession) {}
 
     override fun analyze(module: TestModule): FirOutputArtifact {
-        val moduleInfoProvider = testServices.firModuleInfoProvider
-        val compilerConfigurationProvider = testServices.compilerConfigurationProvider
-        // TODO: add configurable parser
+        val isMppSupported = module.languageVersionSettings.supportsFeature(LanguageFeature.MultiPlatformProjects)
 
-        val project = compilerConfigurationProvider.getProject(module)
+        val sortedModules = if (isMppSupported) sortDependsOnTopologically(module) else listOf(module)
 
-        PsiElementFinder.EP.getPoint(project).unregisterExtension(JavaElementFinder::class.java)
+        val (moduleDataMap, moduleDataProvider) = initializeModuleData(sortedModules)
 
-        val lightTreeEnabled = FirDiagnosticsDirectives.USE_LIGHT_TREE in module.directives
-        val (ktFiles, lightTreeFiles) = if (lightTreeEnabled) {
-            emptyList<KtFile>() to testServices.sourceFileProvider.getLightTreeFilesForSourceFiles(module.files).values
-        } else {
-            testServices.sourceFileProvider.getKtFilesForSourceFiles(module.files, project).values to emptyList()
+        val projectEnvironment = createLibrarySession(
+            module,
+            testServices.compilerConfigurationProvider.getProject(module),
+            Name.special("<${module.name}>"),
+            testServices.firModuleInfoProvider.firSessionProvider,
+            moduleDataProvider,
+            testServices.compilerConfigurationProvider.getCompilerConfiguration(module)
+        )
+
+        val targetPlatform = module.targetPlatform
+        val firOutputPartForDependsOnModules = mutableListOf<FirOutputPartForDependsOnModule>()
+        for (testModule in sortedModules) {
+            firOutputPartForDependsOnModules.add(
+                analyze(
+                    testModule,
+                    moduleDataMap[testModule]!!,
+                    targetPlatform,
+                    projectEnvironment,
+                    isMppSupported = isMppSupported
+                )
+            )
         }
 
+        return FirOutputArtifactImpl(firOutputPartForDependsOnModules)
+    }
+
+    private fun sortDependsOnTopologically(module: TestModule): List<TestModule> {
+        val sortedModules = mutableListOf<TestModule>()
+        val visitedModules = mutableSetOf<TestModule>()
+        val modulesQueue = ArrayDeque<TestModule>()
+        modulesQueue.add(module)
+
+        while (modulesQueue.isNotEmpty()) {
+            val currentModule = modulesQueue.removeFirst()
+            if (!visitedModules.add(currentModule)) continue
+            sortedModules.add(currentModule)
+
+            for (dependency in currentModule.dependsOnDependencies) {
+                modulesQueue.add(testServices.dependencyProvider.getTestModule(dependency.moduleName))
+            }
+        }
+
+        return sortedModules.reversed()
+    }
+
+    private fun initializeModuleData(modules: List<TestModule>): Pair<Map<TestModule, FirModuleData>, ModuleDataProvider> {
+        val mainModule = modules.last()
+
+        val targetPlatform = mainModule.targetPlatform
+        val analyzerServices = targetPlatform.getAnalyzerServices()
+
         // the special name is required for `KlibMetadataModuleDescriptorFactoryImpl.createDescriptorOptionalBuiltIns`
         // it doesn't seem convincingly legitimate, probably should be refactored
-        val moduleName = Name.special("<${module.name}>")
+        val moduleName = Name.special("<${mainModule.name}>")
+        val binaryModuleData = BinaryModuleData.initialize(moduleName, targetPlatform, analyzerServices)
+
+        val compilerConfigurationProvider = testServices.compilerConfigurationProvider
+        val configuration = compilerConfigurationProvider.getCompilerConfiguration(mainModule)
+
+        val libraryList = initializeLibraryList(mainModule, binaryModuleData, targetPlatform, configuration)
+
+        val moduleInfoProvider = testServices.firModuleInfoProvider
+        val moduleDataMap = mutableMapOf<TestModule, FirModuleData>()
+
+        for (module in modules) {
+            val regularModules = libraryList.regularDependencies + moduleInfoProvider.getRegularDependentSourceModules(module)
+            val friendModules = libraryList.friendsDependencies + moduleInfoProvider.getDependentFriendSourceModules(module)
+            val dependsOnModules = libraryList.dependsOnDependencies + moduleInfoProvider.getDependentDependsOnSourceModules(module)
+
+            val moduleData = FirModuleDataImpl(
+                Name.special("<${module.name}>"),
+                regularModules,
+                dependsOnModules,
+                friendModules,
+                module.targetPlatform,
+                module.targetPlatform.getAnalyzerServices()
+            )
+
+            moduleInfoProvider.registerModuleData(module, moduleData)
+
+            moduleDataMap[module] = moduleData
+        }
+
+        return moduleDataMap to libraryList.moduleDataProvider
+    }
+
+    private fun initializeLibraryList(
+        mainModule: TestModule,
+        binaryModuleData: BinaryModuleData,
+        targetPlatform: TargetPlatform,
+        configuration: CompilerConfiguration,
+    ): DependencyListForCliModule {
+        return DependencyListForCliModule.build(binaryModuleData) {
+            when {
+                targetPlatform.isCommon() || targetPlatform.isJvm() || targetPlatform.isNative() -> {
+                    dependencies(configuration.jvmModularRoots.map { it.toPath() })
+                    dependencies(configuration.jvmClasspathRoots.map { it.toPath() })
+                    friendDependencies(configuration[JVMConfigurationKeys.FRIEND_PATHS] ?: emptyList())
+                }
+                targetPlatform.isJs() -> {
+                    val (runtimeKlibsPaths, transitiveLibraries, friendLibraries) = getJsDependencies(mainModule, testServices)
+                    dependencies(runtimeKlibsPaths.map { Paths.get(it).toAbsolutePath() })
+                    dependencies(transitiveLibraries.map { it.toPath().toAbsolutePath() })
+                    friendDependencies(friendLibraries.map { it.toPath().toAbsolutePath() })
+                }
+                else -> error("Unsupported")
+            }
+        }
+    }
+
+    private fun createLibrarySession(
+        module: TestModule,
+        project: Project,
+        moduleName: Name,
+        sessionProvider: FirProjectSessionProvider,
+        moduleDataProvider: ModuleDataProvider,
+        configuration: CompilerConfiguration
+    ): AbstractProjectEnvironment? {
+        val compilerConfigurationProvider = testServices.compilerConfigurationProvider
+        val projectEnvironment: AbstractProjectEnvironment?
         val languageVersionSettings = module.languageVersionSettings
-        val analyzerServices = module.targetPlatform.getAnalyzerServices()
-        val configuration = compilerConfigurationProvider.getCompilerConfiguration(module)
-        val extensionRegistrars = FirExtensionRegistrar.getInstances(project)
-
-        val sessionConfigurator: FirSessionConfigurator.() -> Unit = {
-            if (FirDiagnosticsDirectives.WITH_EXTENDED_CHECKERS in module.directives) {
-                registerExtendedCommonCheckers()
-            }
-            additionalSessionConfiguration?.invoke(this)
-        }
-
-        val isCommonOrJvm = module.targetPlatform.isJvm() || module.targetPlatform.isCommon()
-
-        val dependencyList = buildDependencyList(module, moduleName, moduleInfoProvider, analyzerServices) {
-            if (isCommonOrJvm || module.targetPlatform.isNative()) {
-                configureJvmDependencies(configuration)
-            } else {
-                configureJsDependencies(module, testServices)
-            }
-        }
-
-        val projectEnvironment: VfsBasedProjectEnvironment?
-
         when {
-            isCommonOrJvm -> {
+            // TODO: use common session for common target platform when it's implemented
+            module.targetPlatform.isCommon() || module.targetPlatform.isJvm() -> {
                 val packagePartProviderFactory = compilerConfigurationProvider.getPackagePartProviderFactory(module)
                 projectEnvironment = VfsBasedProjectEnvironment(
                     project, VirtualFileManager.getInstance().getFileSystem(StandardFileSystems.FILE_PROTOCOL),
@@ -123,8 +216,8 @@ open class FirFrontendFacade(
 
                 FirJvmSessionFactory.createLibrarySession(
                     moduleName,
-                    moduleInfoProvider.firSessionProvider,
-                    dependencyList,
+                    sessionProvider,
+                    moduleDataProvider,
                     projectEnvironment,
                     projectFileSearchScope,
                     packagePartProvider,
@@ -136,8 +229,8 @@ open class FirFrontendFacade(
                 projectEnvironment = null
                 TestFirJsSessionFactory.createLibrarySession(
                     moduleName,
-                    moduleInfoProvider.firSessionProvider,
-                    dependencyList,
+                    sessionProvider,
+                    moduleDataProvider,
                     module,
                     testServices,
                     configuration,
@@ -150,29 +243,97 @@ open class FirFrontendFacade(
                 FirNativeSessionFactory.createLibrarySession(
                     moduleName,
                     listOf(),
-                    moduleInfoProvider.firSessionProvider,
-                    dependencyList,
+                    sessionProvider,
+                    moduleDataProvider,
                     languageVersionSettings,
                     registerExtraComponents = ::registerExtraComponents,
                 )
             }
             else -> error("Unsupported")
         }
+        return projectEnvironment
+    }
 
-        val mainModuleData = FirModuleDataImpl(
-            moduleName,
-            dependencyList.regularDependencies,
-            dependencyList.dependsOnDependencies,
-            dependencyList.friendsDependencies,
-            dependencyList.platform,
-            dependencyList.analyzerServices
+    private fun analyze(
+        module: TestModule,
+        moduleData: FirModuleData,
+        targetPlatform: TargetPlatform,
+        projectEnvironment: AbstractProjectEnvironment?,
+        isMppSupported: Boolean,
+    ): FirOutputPartForDependsOnModule {
+        val compilerConfigurationProvider = testServices.compilerConfigurationProvider
+        val moduleInfoProvider = testServices.firModuleInfoProvider
+        val sessionProvider = moduleInfoProvider.firSessionProvider
+
+        val project = compilerConfigurationProvider.getProject(module)
+
+        PsiElementFinder.EP.getPoint(project).unregisterExtension(JavaElementFinder::class.java)
+
+        val lightTreeEnabled = FirDiagnosticsDirectives.USE_LIGHT_TREE in module.directives
+        val (ktFiles, lightTreeFiles) = if (lightTreeEnabled) {
+            emptyList<KtFile>() to testServices.sourceFileProvider.getLightTreeFilesForSourceFiles(module.files).values
+        } else {
+            testServices.sourceFileProvider.getKtFilesForSourceFiles(module.files, project).values to emptyList()
+        }
+
+        val extensionRegistrars = FirExtensionRegistrar.getInstances(project)
+        val sessionConfigurator: FirSessionConfigurator.() -> Unit = {
+            if (FirDiagnosticsDirectives.WITH_EXTENDED_CHECKERS in module.directives) {
+                registerExtendedCommonCheckers()
+            }
+            additionalSessionConfiguration?.invoke(this)
+        }
+
+        val moduleBasedSession = createModuleBasedSession(
+            module,
+            moduleData,
+            targetPlatform,
+            sessionProvider,
+            projectEnvironment,
+            extensionRegistrars,
+            sessionConfigurator,
+            project,
+            ktFiles
         )
 
-        val session = when {
-            isCommonOrJvm -> {
+        val enablePluginPhases = FirDiagnosticsDirectives.ENABLE_PLUGIN_PHASES in module.directives
+        val firAnalyzerFacade = FirAnalyzerFacade(
+            moduleBasedSession,
+            module.languageVersionSettings,
+            ktFiles,
+            lightTreeFiles,
+            IrGenerationExtension.getInstances(project),
+            lightTreeEnabled,
+            enablePluginPhases,
+            generateSignatures = module.targetBackend == TargetBackend.JVM_IR_SERIALIZE || isMppSupported,
+        )
+        val firFiles = firAnalyzerFacade.runResolution()
+        val filesMap = firFiles.mapNotNull { firFile ->
+            val testFile = module.files.firstOrNull { it.name == firFile.name } ?: return@mapNotNull null
+            testFile to firFile
+        }.toMap()
+
+        return FirOutputPartForDependsOnModule(module, moduleBasedSession, firAnalyzerFacade, filesMap)
+    }
+
+    private fun createModuleBasedSession(
+        module: TestModule,
+        moduleData: FirModuleData,
+        targetPlatform: TargetPlatform,
+        sessionProvider: FirProjectSessionProvider,
+        projectEnvironment: AbstractProjectEnvironment?,
+        extensionRegistrars: List<FirExtensionRegistrar>,
+        sessionConfigurator: FirSessionConfigurator.() -> Unit,
+        project: Project,
+        ktFiles: Collection<KtFile>
+    ): FirSession {
+        val languageVersionSettings = module.languageVersionSettings
+        return when {
+            // TODO: use common session for common target platform when it's implemented
+            targetPlatform.isCommon() || targetPlatform.isJvm() -> {
                 FirJvmSessionFactory.createModuleBasedSession(
-                    mainModuleData,
-                    moduleInfoProvider.firSessionProvider,
+                    moduleData,
+                    sessionProvider,
                     PsiBasedProjectFileSearchScope(TopDownAnalyzerFacadeForJVM.newModuleSearchScope(project, ktFiles)),
                     projectEnvironment!!,
                     incrementalCompilationContext = null,
@@ -185,10 +346,10 @@ open class FirFrontendFacade(
                     sessionConfigurator,
                 )
             }
-            module.targetPlatform.isJs() -> {
+            targetPlatform.isJs() -> {
                 TestFirJsSessionFactory.createModuleBasedSession(
-                    mainModuleData,
-                    moduleInfoProvider.firSessionProvider,
+                    moduleData,
+                    sessionProvider,
                     extensionRegistrars,
                     languageVersionSettings,
                     null,
@@ -196,10 +357,10 @@ open class FirFrontendFacade(
                     sessionConfigurator,
                 )
             }
-            module.targetPlatform.isNative() -> {
+            targetPlatform.isNative() -> {
                 FirNativeSessionFactory.createModuleBasedSession(
-                    mainModuleData,
-                    moduleInfoProvider.firSessionProvider,
+                    moduleData,
+                    sessionProvider,
                     extensionRegistrars,
                     languageVersionSettings,
                     registerExtraComponents = ::registerExtraComponents,
@@ -208,93 +369,5 @@ open class FirFrontendFacade(
             }
             else -> error("Unsupported")
         }
-
-        moduleInfoProvider.registerModuleData(module, session.moduleData)
-
-        val enablePluginPhases = FirDiagnosticsDirectives.ENABLE_PLUGIN_PHASES in module.directives
-        val firAnalyzerFacade = FirAnalyzerFacade(
-            session,
-            languageVersionSettings,
-            ktFiles,
-            lightTreeFiles,
-            IrGenerationExtension.getInstances(project),
-            lightTreeEnabled,
-            enablePluginPhases,
-            generateSignatures = module.targetBackend == TargetBackend.JVM_IR_SERIALIZE
-        )
-        val firFiles = firAnalyzerFacade.runResolution()
-        val filesMap = firFiles.mapNotNull { firFile ->
-            val testFile = module.files.firstOrNull { it.name == firFile.name } ?: return@mapNotNull null
-            testFile to firFile
-        }.toMap()
-
-        return FirOutputArtifactImpl(session, filesMap, firAnalyzerFacade)
-    }
-}
-
-private fun DependencyListForCliModule.Builder.configureJvmDependencies(
-    configuration: CompilerConfiguration,
-) {
-    dependencies(configuration.jvmModularRoots.map { it.toPath() })
-    dependencies(configuration.jvmClasspathRoots.map { it.toPath() })
-
-    friendDependencies(configuration[JVMConfigurationKeys.FRIEND_PATHS] ?: emptyList())
-}
-
-private fun DependencyListForCliModule.Builder.configureJsDependencies(
-    module: TestModule,
-    testServices: TestServices,
-) {
-    val (runtimeKlibsPaths, transitiveLibraries, friendLibraries) = getJsDependencies(module, testServices)
-
-    dependencies(runtimeKlibsPaths.map { Paths.get(it).toAbsolutePath() })
-    dependencies(transitiveLibraries.map { it.toPath().toAbsolutePath() })
-
-    friendDependencies(friendLibraries.map { it.toPath().toAbsolutePath() })
-}
-
-private fun getJsDependencies(module: TestModule, testServices: TestServices): Triple<List<String>, List<File>, List<File>> {
-    val runtimeKlibsPaths = JsEnvironmentConfigurator.getRuntimePathsForModule(module, testServices)
-    val transitiveLibraries = JsEnvironmentConfigurator.getKlibDependencies(module, testServices, DependencyRelation.RegularDependency)
-    val friendLibraries = JsEnvironmentConfigurator.getKlibDependencies(module, testServices, DependencyRelation.FriendDependency)
-    return Triple(runtimeKlibsPaths, transitiveLibraries, friendLibraries)
-}
-
-fun getAllJsDependenciesPaths(module: TestModule, testServices: TestServices): List<String> {
-    val (runtimeKlibsPaths, transitiveLibraries, friendLibraries) = getJsDependencies(module, testServices)
-    return runtimeKlibsPaths + transitiveLibraries.map { it.path } + friendLibraries.map { it.path }
-}
-
-fun resolveJsLibraries(
-    module: TestModule,
-    testServices: TestServices,
-    configuration: CompilerConfiguration
-): List<KotlinResolvedLibrary> {
-    val paths = getAllJsDependenciesPaths(module, testServices)
-    val repositories = configuration[JSConfigurationKeys.REPOSITORIES] ?: emptyList()
-    val logger = configuration.resolverLogger
-    return jsResolveLibraries(paths, repositories, logger).getFullResolvedList()
-}
-
-private fun buildDependencyList(
-    module: TestModule,
-    moduleName: Name,
-    moduleInfoProvider: FirModuleInfoProvider,
-    analyzerServices: PlatformDependentAnalyzerServices,
-    configureDependencies: DependencyListForCliModule.Builder.() -> Unit,
-) = DependencyListForCliModule.build(moduleName, module.targetPlatform, analyzerServices) {
-    configureDependencies()
-    sourceDependencies(moduleInfoProvider.getRegularDependentSourceModules(module))
-    sourceFriendsDependencies(moduleInfoProvider.getDependentFriendSourceModules(module))
-    sourceDependsOnDependencies(moduleInfoProvider.getDependentDependsOnSourceModules(module))
-}
-
-fun TargetPlatform.getAnalyzerServices(): PlatformDependentAnalyzerServices {
-    return when {
-        isJvm() -> JvmPlatformAnalyzerServices
-        isJs() -> JsPlatformAnalyzerServices
-        isNative() -> NativePlatformAnalyzerServices
-        isCommon() -> CommonPlatformAnalyzerServices
-        else -> error("Unknown target platform: $this")
     }
 }

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/FirModuleInfoProvider.kt

@@ -20,7 +20,9 @@ class FirModuleInfoProvider(private val testServices: TestServices) : TestServic
     private val firModuleDataByModule: MutableMap<TestModule, FirModuleData> = mutableMapOf()
 
     fun registerModuleData(module: TestModule, moduleData: FirModuleData) {
-        if (module in firModuleDataByModule) error("module data for module $module already registered")
+        // Allow reregistering since tests with several targets are possible (JVM, JS)
+        // FirFrontendFacade creates modules for every platform. But if several targets are presented, several common modules will be initialized.
+        // It's not possible to reuse moduleData for the same modules because moduleData depends on the platform.
         firModuleDataByModule[module] = moduleData
     }
 

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/FirOutputArtifact.kt

@@ -6,27 +6,28 @@
 package org.jetbrains.kotlin.test.frontend.fir
 
 import org.jetbrains.kotlin.fir.AbstractFirAnalyzerFacade
-import org.jetbrains.kotlin.fir.FirAnalyzerFacade
 import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.declarations.FirFile
 import org.jetbrains.kotlin.test.model.FrontendKinds
 import org.jetbrains.kotlin.test.model.ResultingArtifact
 import org.jetbrains.kotlin.test.model.TestFile
+import org.jetbrains.kotlin.test.model.TestModule
 
-abstract class FirOutputArtifact : ResultingArtifact.FrontendOutput<FirOutputArtifact>() {
-    abstract val session: FirSession
-    abstract val firAnalyzerFacade: AbstractFirAnalyzerFacade
-    abstract val allFirFiles: Map<TestFile, FirFile>
+// Only MPP contains several parts inside FirOutputArtifact, other projects only contain single part.
+data class FirOutputPartForDependsOnModule(
+    val module: TestModule,
+    val session: FirSession,
+    val firAnalyzerFacade: AbstractFirAnalyzerFacade,
+    val firFiles: Map<TestFile, FirFile>
+)
+
+abstract class FirOutputArtifact(val partsForDependsOnModules: List<FirOutputPartForDependsOnModule>) : ResultingArtifact.FrontendOutput<FirOutputArtifact>() {
+    val allFirFiles: Map<TestFile, FirFile> = partsForDependsOnModules.fold(emptyMap()) { acc, part -> acc + part.firFiles }
 
     override val kind: FrontendKinds.FIR
         get() = FrontendKinds.FIR
 
-
-    val firFiles: Map<TestFile, FirFile> by lazy { allFirFiles.filterKeys { !it.isAdditional } }
+    val mainFirFiles: Map<TestFile, FirFile> by lazy { allFirFiles.filterKeys { !it.isAdditional } }
 }
 
-data class FirOutputArtifactImpl(
-    override val session: FirSession,
-    override val allFirFiles: Map<TestFile, FirFile>,
-    override val firAnalyzerFacade: FirAnalyzerFacade
-) : FirOutputArtifact()
+class FirOutputArtifactImpl(parts: List<FirOutputPartForDependsOnModule>) : FirOutputArtifact(parts)

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/TestFirJsSessionFactory.kt

@@ -7,9 +7,9 @@ package org.jetbrains.kotlin.test.frontend.fir
 
 import org.jetbrains.kotlin.config.CompilerConfiguration
 import org.jetbrains.kotlin.config.LanguageVersionSettings
-import org.jetbrains.kotlin.fir.DependencyListForCliModule
-import org.jetbrains.kotlin.fir.FirModuleDataImpl
+import org.jetbrains.kotlin.fir.FirModuleData
 import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.deserialization.ModuleDataProvider
 import org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrar
 import org.jetbrains.kotlin.fir.java.FirProjectSessionProvider
 import org.jetbrains.kotlin.fir.session.FirJsSessionFactory
@@ -18,15 +18,19 @@ import org.jetbrains.kotlin.incremental.components.LookupTracker
 import org.jetbrains.kotlin.ir.backend.js.jsResolveLibraries
 import org.jetbrains.kotlin.ir.backend.js.resolverLogger
 import org.jetbrains.kotlin.js.config.JSConfigurationKeys
+import org.jetbrains.kotlin.library.metadata.resolver.KotlinResolvedLibrary
 import org.jetbrains.kotlin.name.Name
+import org.jetbrains.kotlin.test.model.DependencyRelation
 import org.jetbrains.kotlin.test.model.TestModule
 import org.jetbrains.kotlin.test.services.TestServices
+import org.jetbrains.kotlin.test.services.configuration.JsEnvironmentConfigurator
+import java.io.File
 
 object TestFirJsSessionFactory {
     fun createLibrarySession(
         mainModuleName: Name,
         sessionProvider: FirProjectSessionProvider,
-        dependencyListForCliModule: DependencyListForCliModule,
+        moduleDataProvider: ModuleDataProvider,
         module: TestModule,
         testServices: TestServices,
         configuration: CompilerConfiguration,
@@ -42,14 +46,14 @@ object TestFirJsSessionFactory {
             mainModuleName,
             resolvedLibraries,
             sessionProvider,
-            dependencyListForCliModule.moduleDataProvider,
+            moduleDataProvider,
             languageVersionSettings,
             registerExtraComponents,
         )
     }
 
     fun createModuleBasedSession(
-        mainModuleData: FirModuleDataImpl, sessionProvider: FirProjectSessionProvider, extensionRegistrars: List<FirExtensionRegistrar>,
+        mainModuleData: FirModuleData, sessionProvider: FirProjectSessionProvider, extensionRegistrars: List<FirExtensionRegistrar>,
         languageVersionSettings: LanguageVersionSettings, lookupTracker: LookupTracker?,
         registerExtraComponents: ((FirSession) -> Unit),
         sessionConfigurator: FirSessionConfigurator.() -> Unit,
@@ -63,4 +67,27 @@ object TestFirJsSessionFactory {
             registerExtraComponents,
             sessionConfigurator
         )
-}
+}
+
+fun resolveJsLibraries(
+    module: TestModule,
+    testServices: TestServices,
+    configuration: CompilerConfiguration
+): List<KotlinResolvedLibrary> {
+    val paths = getAllJsDependenciesPaths(module, testServices)
+    val repositories = configuration[JSConfigurationKeys.REPOSITORIES] ?: emptyList()
+    val logger = configuration.resolverLogger
+    return jsResolveLibraries(paths, repositories, logger).getFullResolvedList()
+}
+
+fun getAllJsDependenciesPaths(module: TestModule, testServices: TestServices): List<String> {
+    val (runtimeKlibsPaths, transitiveLibraries, friendLibraries) = getJsDependencies(module, testServices)
+    return runtimeKlibsPaths + transitiveLibraries.map { it.path } + friendLibraries.map { it.path }
+}
+
+fun getJsDependencies(module: TestModule, testServices: TestServices): Triple<List<String>, List<File>, List<File>> {
+    val runtimeKlibsPaths = JsEnvironmentConfigurator.getRuntimePathsForModule(module, testServices)
+    val transitiveLibraries = JsEnvironmentConfigurator.getKlibDependencies(module, testServices, DependencyRelation.RegularDependency)
+    val friendLibraries = JsEnvironmentConfigurator.getKlibDependencies(module, testServices, DependencyRelation.FriendDependency)
+    return Triple(runtimeKlibsPaths, transitiveLibraries, friendLibraries)
+}

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/handlers/FirCfgConsistencyHandler.kt

@@ -12,7 +12,7 @@ import org.jetbrains.kotlin.test.services.TestServices
 
 class FirCfgConsistencyHandler(testServices: TestServices) : FirAnalysisHandler(testServices) {
     override fun processModule(module: TestModule, info: FirOutputArtifact) {
-        info.firFiles.values.forEach { it.accept(FirCfgConsistencyChecker(assertions)) }
+        info.mainFirFiles.values.forEach { it.accept(FirCfgConsistencyChecker(assertions)) }
     }
 
     override fun processAfterAllModules(someAssertionWasFailed: Boolean) {}

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/handlers/FirCfgDumpHandler.kt

@@ -24,7 +24,7 @@ class FirCfgDumpHandler(testServices: TestServices) : FirAnalysisHandler(testSer
 
     override fun processModule(module: TestModule, info: FirOutputArtifact) {
         if (alreadyDumped || FirDiagnosticsDirectives.DUMP_CFG !in module.directives) return
-        val file = info.firFiles.values.first()
+        val file = info.mainFirFiles.values.first()
         val renderLevels = RENDERER_CFG_LEVELS in module.directives
         file.accept(FirControlFlowGraphRenderVisitor(builder, renderLevels))
         alreadyDumped = true

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/handlers/FirDiagnosticsHandler.kt

@@ -61,39 +61,43 @@ class FirDiagnosticsHandler(testServices: TestServices) : FirAnalysisHandler(tes
         listOf(service(::DiagnosticsService))
 
     override fun processModule(module: TestModule, info: FirOutputArtifact) {
-        val diagnosticsPerFile = info.firAnalyzerFacade.runCheckers()
-        val lightTreeComparingModeEnabled = FirDiagnosticsDirectives.COMPARE_WITH_LIGHT_TREE in module.directives
-        val lightTreeEnabled = FirDiagnosticsDirectives.USE_LIGHT_TREE in module.directives
+        for (part in info.partsForDependsOnModules) {
+            val diagnosticsPerFile = part.firAnalyzerFacade.runCheckers()
+            val currentModule = part.module
 
-        for (file in module.files) {
-            val firFile = info.firFiles[file] ?: continue
-            var diagnostics = diagnosticsPerFile[firFile] ?: continue
-            if (AdditionalFilesDirectives.CHECK_TYPE in module.directives) {
-                diagnostics = diagnostics.filter { it.factory.name != FirErrors.UNDERSCORE_USAGE_WITHOUT_BACKTICKS.name }
-            }
-            if (LanguageSettingsDirectives.API_VERSION in module.directives) {
-                diagnostics = diagnostics.filter { it.factory.name != FirErrors.NEWER_VERSION_IN_SINCE_KOTLIN.name }
-            }
-            val diagnosticsMetadataInfos = diagnostics.flatMap { diagnostic ->
-                if (!diagnosticsService.shouldRenderDiagnostic(
-                        module,
-                        diagnostic.factory.name,
-                        diagnostic.severity
+            val lightTreeComparingModeEnabled = FirDiagnosticsDirectives.COMPARE_WITH_LIGHT_TREE in currentModule.directives
+            val lightTreeEnabled = FirDiagnosticsDirectives.USE_LIGHT_TREE in currentModule.directives
+
+            for (file in currentModule.files) {
+                val firFile = info.mainFirFiles[file] ?: continue
+                var diagnostics = diagnosticsPerFile[firFile] ?: continue
+                if (AdditionalFilesDirectives.CHECK_TYPE in currentModule.directives) {
+                    diagnostics = diagnostics.filter { it.factory.name != FirErrors.UNDERSCORE_USAGE_WITHOUT_BACKTICKS.name }
+                }
+                if (LanguageSettingsDirectives.API_VERSION in currentModule.directives) {
+                    diagnostics = diagnostics.filter { it.factory.name != FirErrors.NEWER_VERSION_IN_SINCE_KOTLIN.name }
+                }
+                val diagnosticsMetadataInfos = diagnostics.flatMap { diagnostic ->
+                    if (!diagnosticsService.shouldRenderDiagnostic(
+                            currentModule,
+                            diagnostic.factory.name,
+                            diagnostic.severity
+                        )
+                    ) return@flatMap emptyList()
+                    // SYNTAX errors will be reported later
+                    if (diagnostic.factory == FirSyntaxErrors.SYNTAX) return@flatMap emptyList()
+                    if (!diagnostic.isValid) return@flatMap emptyList()
+                    diagnostic.toMetaInfos(
+                        file,
+                        globalMetadataInfoHandler,
+                        lightTreeEnabled,
+                        lightTreeComparingModeEnabled
                     )
-                ) return@flatMap emptyList()
-                // SYNTAX errors will be reported later
-                if (diagnostic.factory == FirSyntaxErrors.SYNTAX) return@flatMap emptyList()
-                if (!diagnostic.isValid) return@flatMap emptyList()
-                diagnostic.toMetaInfos(
-                    file,
-                    globalMetadataInfoHandler,
-                    lightTreeEnabled,
-                    lightTreeComparingModeEnabled
-                )
+                }
+                globalMetadataInfoHandler.addMetadataInfosForFile(file, diagnosticsMetadataInfos)
+                collectSyntaxDiagnostics(file, firFile, lightTreeEnabled, lightTreeComparingModeEnabled)
+                collectDebugInfoDiagnostics(currentModule, file, firFile, lightTreeEnabled, lightTreeComparingModeEnabled)
             }
-            globalMetadataInfoHandler.addMetadataInfosForFile(file, diagnosticsMetadataInfos)
-            collectSyntaxDiagnostics(file, firFile, lightTreeEnabled, lightTreeComparingModeEnabled)
-            collectDebugInfoDiagnostics(module, file, firFile, lightTreeEnabled, lightTreeComparingModeEnabled)
         }
     }
 

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/handlers/FirDumpHandler.kt

@@ -32,25 +32,28 @@ class FirDumpHandler(
         get() = listOf(FirDiagnosticsDirectives)
 
     override fun processModule(module: TestModule, info: FirOutputArtifact) {
-        if (FirDiagnosticsDirectives.FIR_DUMP !in module.directives) return
-        val builderForModule = dumper.builderForModule(module)
-        val firFiles = info.firFiles
+        for (part in info.partsForDependsOnModules) {
+            val currentModule = part.module
+            if (FirDiagnosticsDirectives.FIR_DUMP !in currentModule.directives) return
+            val builderForModule = dumper.builderForModule(currentModule)
+            val firFiles = info.mainFirFiles
 
-        val allFiles = buildList {
-            addAll(firFiles.values)
-            addAll(info.session.createFilesWithGeneratedDeclarations())
-        }
-        info.session.lazyDeclarationResolver.startResolvingPhase(FirResolvePhase.BODY_RESOLVE)
+            val allFiles = buildList {
+                addAll(firFiles.values)
+                addAll(part.session.createFilesWithGeneratedDeclarations())
+            }
+            part.session.lazyDeclarationResolver.startResolvingPhase(FirResolvePhase.BODY_RESOLVE)
 
-        val renderer = FirRenderer(
-            builder = builderForModule,
-            packageDirectiveRenderer = FirPackageDirectiveRenderer(),
-            classMemberRenderer = FirClassMemberRendererWithGeneratedDeclarations(info.session)
-        )
-        allFiles.forEach {
-            renderer.renderElementAsString(it)
+            val renderer = FirRenderer(
+                builder = builderForModule,
+                packageDirectiveRenderer = FirPackageDirectiveRenderer(),
+                classMemberRenderer = FirClassMemberRendererWithGeneratedDeclarations(part.session)
+            )
+            allFiles.forEach {
+                renderer.renderElementAsString(it)
+            }
+            part.session.lazyDeclarationResolver.finishResolvingPhase(FirResolvePhase.BODY_RESOLVE)
         }
-        info.session.lazyDeclarationResolver.finishResolvingPhase(FirResolvePhase.BODY_RESOLVE)
     }
 
     override fun processAfterAllModules(someAssertionWasFailed: Boolean) {

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/handlers/FirResolveContractViolationErrorHandler.kt

@@ -13,10 +13,12 @@ import org.jetbrains.kotlin.test.services.assertions
 
 class FirResolveContractViolationErrorHandler(testServices: TestServices) : FirAnalysisHandler(testServices) {
     override fun processModule(module: TestModule, info: FirOutputArtifact) {
-        val session = info.session
-        val lazyResolver = session.lazyDeclarationResolver as? FirCompilerLazyDeclarationResolverWithPhaseChecking ?: return
-        val exceptions = lazyResolver.getContractViolationExceptions().ifEmpty { return }
-        testServices.assertions.failAll(exceptions)
+        for (part in info.partsForDependsOnModules) {
+            val session = part.session
+            val lazyResolver = session.lazyDeclarationResolver as? FirCompilerLazyDeclarationResolverWithPhaseChecking ?: return
+            val exceptions = lazyResolver.getContractViolationExceptions().ifEmpty { return }
+            testServices.assertions.failAll(exceptions)
+        }
     }
 
     override fun processAfterAllModules(someAssertionWasFailed: Boolean) {}

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/handlers/FirResolvedTypesVerifier.kt

@@ -6,16 +6,13 @@
 package org.jetbrains.kotlin.test.frontend.fir.handlers
 
 import org.jetbrains.kotlin.fir.FirElement
-import org.jetbrains.kotlin.fir.FirSession
 import org.jetbrains.kotlin.fir.diagnostics.ConeAmbiguousSuper
 import org.jetbrains.kotlin.fir.diagnostics.ConeDiagnostic
 import org.jetbrains.kotlin.fir.diagnostics.FirDiagnosticHolder
 import org.jetbrains.kotlin.fir.expressions.FirErrorLoop
-import org.jetbrains.kotlin.fir.expressions.FirLoop
 import org.jetbrains.kotlin.fir.expressions.FirLoopJump
 import org.jetbrains.kotlin.fir.render
 import org.jetbrains.kotlin.fir.resolve.diagnostics.ConeFunctionExpectedError
-import org.jetbrains.kotlin.fir.resolve.substitution.AbstractConeSubstitutor
 import org.jetbrains.kotlin.fir.types.*
 import org.jetbrains.kotlin.fir.visitors.FirDefaultVisitor
 import org.jetbrains.kotlin.test.directives.FirDiagnosticsDirectives
@@ -31,7 +28,7 @@ class FirResolvedTypesVerifier(testServices: TestServices) : FirAnalysisHandler(
 
     override fun processModule(module: TestModule, info: FirOutputArtifact) {
         val visitor = Visitor()
-        for (firFile in info.firFiles.values) {
+        for (firFile in info.mainFirFiles.values) {
             firFile.acceptChildren(visitor, firFile)
         }
         val ignored = IGNORE_LEAKED_INTERNAL_TYPES in module.directives

compiler/tests-common-new/tests/org/jetbrains/kotlin/test/frontend/fir/handlers/FirScopeDumpHandler.kt

@@ -41,12 +41,15 @@ class FirScopeDumpHandler(testServices: TestServices) : FirAnalysisHandler(testS
         get() = listOf(FirDiagnosticsDirectives)
 
     override fun processModule(module: TestModule, info: FirOutputArtifact) {
-        val fqNamesWithNames = module.directives[FirDiagnosticsDirectives.SCOPE_DUMP]
-        if (fqNamesWithNames.isEmpty()) return
-        val printer = SmartPrinter(dumper.builderForModule(module), indent = "  ")
-        for (fqNameWithNames in fqNamesWithNames) {
-            val (fqName, names) = extractFqNameAndMemberNames(fqNameWithNames)
-            printer.processClass(fqName, names, info.session, info.firAnalyzerFacade.scopeSession, module)
+        for (part in info.partsForDependsOnModules) {
+            val currentModule = part.module
+            val fqNamesWithNames = currentModule.directives[FirDiagnosticsDirectives.SCOPE_DUMP]
+            if (fqNamesWithNames.isEmpty()) return
+            val printer = SmartPrinter(dumper.builderForModule(currentModule), indent = "  ")
+            for (fqNameWithNames in fqNamesWithNames) {
+                val (fqName, names) = extractFqNameAndMemberNames(fqNameWithNames)
+                printer.processClass(fqName, names, part.session, part.firAnalyzerFacade.scopeSession, currentModule)
+            }
         }
     }
 

compiler/tests-compiler-utils/tests/org/jetbrains/kotlin/fir/FirAnalyzerFacade.kt

@@ -48,7 +48,7 @@ class FirAnalyzerFacade(
     val irGeneratorExtensions: Collection<IrGenerationExtension>,
     val useLightTree: Boolean = false,
     val enablePluginPhases: Boolean = false,
-    val generateSignatures: Boolean = false,
+    val generateSignatures: Boolean = false
 ) : AbstractFirAnalyzerFacade() {
     private var firFiles: List<FirFile>? = null
     private var _scopeSession: ScopeSession? = null
@@ -108,13 +108,8 @@ class FirAnalyzerFacade(
         val mangler = JvmDescriptorMangler(null)
         val signaturer = JvmIdSignatureDescriptor(mangler)
 
-        val commonFirFiles = session.moduleData.dependsOnDependencies
-            .map { it.session }
-            .filter { it.kind == FirSession.Kind.Source }
-            .flatMap { (it.firProvider as FirProviderImpl).getAllFirFiles() }
-
         return Fir2IrConverter.createModuleFragmentWithSignaturesIfNeeded(
-            session, _scopeSession!!, firFiles!! + commonFirFiles,
+            session, _scopeSession!!, firFiles!!,
             languageVersionSettings, signaturer,
             fir2IrExtensions,
             FirJvmKotlinMangler(session), JvmIrMangler, IrFactoryImpl,

compiler/visualizer/tests/org/jetbrains/kotlin/visualizer/AbstractVisualizerBlackBoxTest.kt

@@ -80,7 +80,7 @@ abstract class AbstractVisualizerBlackBoxTest {
         TestRunner(firConfiguration).runTest(filePath) { testConfiguration ->
             testConfiguration.testServices.moduleStructure.modules.forEach { firModule ->
                 val firArtifact = testConfiguration.testServices.dependencyProvider.getArtifact(firModule, FrontendKinds.FIR)
-                val firRenderer = firArtifact.firFiles.values.firstOrNull()?.let { FirVisualizer(it) }
+                val firRenderer = firArtifact.mainFirFiles.values.firstOrNull()?.let { FirVisualizer(it) }
                 firRenderResult = firRenderer?.render()?.trim() ?: ""
             }
         }

compiler/visualizer/tests/org/jetbrains/kotlin/visualizer/fir/FirOutputHandler.kt

@@ -15,7 +15,7 @@ import java.io.File
 
 internal class FirOutputHandler(testServices: TestServices) : FirAnalysisHandler(testServices) {
     override fun processModule(module: TestModule, info: FirOutputArtifact) {
-        val renderer = info.firFiles.values.firstOrNull()?.let { FirVisualizer(it) } ?: return
+        val renderer = info.mainFirFiles.values.firstOrNull()?.let { FirVisualizer(it) } ?: return
         val firRenderResult = renderer.render().trim()
 
         val replaceFrom = module.directives[VisualizerDirectives.TEST_FILE_PATH].first()

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/FirFrontend.kt

@@ -9,6 +9,7 @@ import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
 import org.jetbrains.kotlin.config.AnalysisFlags
 import org.jetbrains.kotlin.config.languageVersionSettings
 import org.jetbrains.kotlin.diagnostics.DiagnosticReporterFactory
+import org.jetbrains.kotlin.fir.BinaryModuleData
 import org.jetbrains.kotlin.fir.DependencyListForCliModule
 import org.jetbrains.kotlin.fir.FirModuleDataImpl
 import org.jetbrains.kotlin.fir.checkers.registerExtendedCommonCheckers
@@ -45,7 +46,8 @@ internal fun PhaseContext.firFrontend(
     val syntaxErrors = ktFiles.fold(false) { errorsFound, ktFile ->
         AnalyzerWithCompilerReport.reportSyntaxErrors(ktFile, messageCollector).isHasErrors or errorsFound
     }
-    val dependencyList = DependencyListForCliModule.build(mainModuleName, CommonPlatforms.defaultCommonPlatform, NativePlatformAnalyzerServices) {
+    val binaryModuleData = BinaryModuleData.initialize(mainModuleName, CommonPlatforms.defaultCommonPlatform, NativePlatformAnalyzerServices)
+    val dependencyList = DependencyListForCliModule.build(binaryModuleData) {
         dependencies(config.resolvedLibraries.getFullList().map { it.libraryFile.absolutePath })
         friendDependencies(config.friendModuleFiles.map { it.absolutePath })
         // TODO: !!! dependencies module data?
@@ -55,7 +57,7 @@ internal fun PhaseContext.firFrontend(
             mainModuleName,
             resolvedLibraries,
             sessionProvider,
-            dependencyList,
+            dependencyList.moduleDataProvider,
             configuration.languageVersionSettings,
             registerExtraComponents = {},
     )
@@ -64,8 +66,8 @@ internal fun PhaseContext.firFrontend(
             dependencyList.regularDependencies,
             dependencyList.dependsOnDependencies,
             dependencyList.friendsDependencies,
-            dependencyList.platform,
-            dependencyList.analyzerServices
+            CommonPlatforms.defaultCommonPlatform,
+            NativePlatformAnalyzerServices
     )
     val session = FirNativeSessionFactory.createModuleBasedSession(
             mainModuleData,

plugins/scripting/scripting-compiler/src/org/jetbrains/kotlin/scripting/compiler/plugin/impl/ScriptJvmCompilerImpls.kt

@@ -13,11 +13,8 @@ import org.jetbrains.kotlin.cli.common.fir.FirDiagnosticsCompilerResultsReporter
 import org.jetbrains.kotlin.cli.common.fir.reportToMessageCollector
 import org.jetbrains.kotlin.cli.common.messages.AnalyzerWithCompilerReport
 import org.jetbrains.kotlin.cli.common.messages.MessageCollector
-import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
-import org.jetbrains.kotlin.cli.jvm.compiler.NoScopeRecordCliBindingTrace
-import org.jetbrains.kotlin.cli.jvm.compiler.TopDownAnalyzerFacadeForJVM
+import org.jetbrains.kotlin.cli.jvm.compiler.*
 import org.jetbrains.kotlin.cli.jvm.compiler.pipeline.*
-import org.jetbrains.kotlin.cli.jvm.compiler.toAbstractProjectEnvironment
 import org.jetbrains.kotlin.cli.jvm.config.JvmClasspathRoot
 import org.jetbrains.kotlin.cli.jvm.config.JvmModulePathRoot
 import org.jetbrains.kotlin.codegen.ClassBuilderFactories
@@ -29,10 +26,11 @@ import org.jetbrains.kotlin.config.CompilerConfiguration
 import org.jetbrains.kotlin.config.JVMConfigurationKeys
 import org.jetbrains.kotlin.config.languageVersionSettings
 import org.jetbrains.kotlin.diagnostics.DiagnosticReporterFactory
+import org.jetbrains.kotlin.fir.FirModuleDataImpl
+import org.jetbrains.kotlin.fir.checkers.registerExtendedCommonCheckers
+import org.jetbrains.kotlin.fir.extensions.FirExtensionRegistrar
 import org.jetbrains.kotlin.fir.java.FirProjectSessionProvider
-import org.jetbrains.kotlin.fir.pipeline.buildFirFromKtFiles
-import org.jetbrains.kotlin.fir.pipeline.runCheckers
-import org.jetbrains.kotlin.fir.pipeline.runResolution
+import org.jetbrains.kotlin.fir.pipeline.*
 import org.jetbrains.kotlin.metadata.jvm.deserialization.JvmProtoBufUtil
 import org.jetbrains.kotlin.modules.TargetId
 import org.jetbrains.kotlin.platform.CommonPlatforms
@@ -52,6 +50,8 @@ import kotlin.script.experimental.jvm.JvmDependencyFromClassLoader
 import kotlin.script.experimental.jvm.compilationCache
 import kotlin.script.experimental.jvm.impl.KJvmCompiledScript
 import kotlin.script.experimental.jvm.jvm
+import org.jetbrains.kotlin.fir.session.FirJvmSessionFactory
+import org.jetbrains.kotlin.name.Name
 
 class ScriptJvmCompilerIsolated(val hostConfiguration: ScriptingHostConfiguration) : ScriptCompilerProxy {
 
@@ -349,20 +349,42 @@ private fun doCompileWithK2(
     val sessionProvider = FirProjectSessionProvider()
     val extendedAnalysisMode = kotlinCompilerConfiguration.getBoolean(CommonConfigurationKeys.USE_FIR_EXTENDED_CHECKERS)
 
-    val session = createSession(
-        targetId.name,
-        JvmPlatforms.unspecifiedJvmPlatform,
-        kotlinCompilerConfiguration,
+    var librariesScope = projectEnvironment.getSearchScopeForProjectLibraries()
+    val providerAndScopeForIncrementalCompilation = createContextForIncrementalCompilation(
+        compilerInput.configuration,
         projectEnvironment,
         sourcesScope,
-        JvmPlatformAnalyzerServices,
+        emptyList(),
+        null
+    )?.also { (_, _, precompiledBinariesFileScope) ->
+        precompiledBinariesFileScope?.let { librariesScope -= it }
+    }
+    val libraryList = createLibraryListAndSession(targetId.name, kotlinCompilerConfiguration, projectEnvironment, librariesScope, sessionProvider)
+    val moduleData = FirModuleDataImpl(
+        Name.identifier(targetId.name),
+        libraryList.regularDependencies,
+        listOf(),
+        libraryList.friendsDependencies,
+        JvmPlatforms.unspecifiedJvmPlatform,
+        JvmPlatformAnalyzerServices
+    )
+    val session = FirJvmSessionFactory.createModuleBasedSession(
+        moduleData,
         sessionProvider,
-        previousStepsSymbolProviders = emptyList(),
-        incrementalExcludesScope = null,
-        extendedAnalysisMode = extendedAnalysisMode,
-        needRegisterJavaElementFinder = true
+        sourcesScope,
+        projectEnvironment,
+        providerAndScopeForIncrementalCompilation,
+        extensionRegistrars = (projectEnvironment as? VfsBasedProjectEnvironment)?.let { FirExtensionRegistrar.getInstances(it.project) }
+            ?: emptyList(),
+        kotlinCompilerConfiguration.languageVersionSettings,
+        lookupTracker = kotlinCompilerConfiguration.get(CommonConfigurationKeys.LOOKUP_TRACKER),
+        enumWhenTracker = kotlinCompilerConfiguration.get(CommonConfigurationKeys.ENUM_WHEN_TRACKER),
+        needRegisterJavaElementFinder = true,
+        registerExtraComponents = {},
     ) {
-        friendDependencies(kotlinCompilerConfiguration[JVMConfigurationKeys.FRIEND_PATHS] ?: emptyList())
+        if (extendedAnalysisMode) {
+            registerExtendedCommonCheckers()
+        }
     }
 
     session.scriptDefinitionProviderService?.run {
@@ -376,7 +398,7 @@ private fun doCompileWithK2(
     // checkers
     session.runCheckers(scopeSession, fir, diagnosticsReporter)
 
-    val analysisResults = ModuleCompilerAnalyzedOutput(session, scopeSession, fir)
+    val analysisResults = FirResult(ModuleCompilerAnalyzedOutput(session, scopeSession, fir), null)
 
     if (diagnosticsReporter.hasErrors) {
         diagnosticsReporter.reportToMessageCollector(messageCollector, renderDiagnosticName)