[K/N][IR][codegen] Build per-file dependencies for caches

compiler/util-klib-metadata/src/org/jetbrains/kotlin/library/metadata/KlibModuleOrigin.kt

@@ -35,3 +35,15 @@ val ModuleDescriptor.klibModuleOrigin get() = this.getCapability(KlibModuleOrigi
 val ModuleDescriptor.kotlinLibrary get() =
     (this.klibModuleOrigin as DeserializedKlibModuleOrigin)
         .library
+
+sealed class CompiledKlibFileOrigin {
+    object CurrentFile : CompiledKlibFileOrigin() // No dependency should be added.
+
+    object StdlibRuntime : CompiledKlibFileOrigin()
+
+    object StdlibKFunctionImpl : CompiledKlibFileOrigin()
+
+    class EntireModule(val library: KotlinLibrary) : CompiledKlibFileOrigin()
+
+    class CertainFile(val library: KotlinLibrary, val fqName: String, val filePath: String) : CompiledKlibFileOrigin()
+}

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

@@ -69,6 +69,7 @@ internal fun Context.getBoxFunction(inlinedClass: IrClass): IrSimpleFunction = m
         returnType = boxedType
     }.also { function ->
         function.parent = parent
+        function.attributeOwnerId = inlinedClass // To be able to get the file.
 
         function.addValueParameter {
             startOffset = inlinedClass.startOffset
@@ -103,6 +104,7 @@ internal fun Context.getUnboxFunction(inlinedClass: IrClass): IrSimpleFunction =
         returnType = unboxedType
     }.also { function ->
         function.parent = parent
+        function.attributeOwnerId = inlinedClass // To be able to get the file.
 
         function.addValueParameter {
             startOffset = inlinedClass.startOffset

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

@@ -125,7 +125,7 @@ class CacheSupport(
         val libraryToAddToCacheFile = File(it)
         val libraryToAddToCache = getLibrary(libraryToAddToCacheFile)
         val libraryCache = cachedLibraries.getLibraryCache(libraryToAddToCache)
-        if (libraryCache != null && libraryCache.granularity == CachedLibraries.Granularity.MODULE)
+        if (libraryCache is CachedLibraries.Cache.Monolithic)
             null
         else {
             val filesToCache = configuration.get(KonanConfigKeys.FILES_TO_CACHE)
@@ -183,7 +183,7 @@ class CacheSupport(
         // Ensure not making cache for libraries that are already cached:
         libraryToCache?.klib?.let {
             val cache = cachedLibraries.getLibraryCache(it)
-            if (cache != null && cache.granularity == CachedLibraries.Granularity.MODULE) {
+            if (cache is CachedLibraries.Cache.Monolithic) {
                 configuration.reportCompilationError("can't cache library '${it.libraryName}' " +
                         "that is already cached in '${cache.path}'")
             }

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

@@ -5,16 +5,18 @@
 
 package org.jetbrains.kotlin.backend.konan
 
+import org.jetbrains.kotlin.backend.konan.serialization.*
 import org.jetbrains.kotlin.backend.konan.serialization.ClassFieldsSerializer
 import org.jetbrains.kotlin.backend.konan.serialization.InlineFunctionBodyReferenceSerializer
-import org.jetbrains.kotlin.backend.konan.serialization.SerializedClassFields
-import org.jetbrains.kotlin.backend.konan.serialization.SerializedInlineFunctionReference
 import org.jetbrains.kotlin.konan.file.File
 import org.jetbrains.kotlin.konan.target.CompilerOutputKind
 import org.jetbrains.kotlin.konan.target.KonanTarget
 import org.jetbrains.kotlin.library.KotlinLibrary
 import org.jetbrains.kotlin.library.uniqueName
 
+private fun getArtifactName(target: KonanTarget, baseName: String, kind: CompilerOutputKind) =
+        "${kind.prefix(target)}$baseName${kind.suffix(target)}"
+
 class CachedLibraries(
         private val target: KonanTarget,
         allLibraries: List<KotlinLibrary>,
@@ -22,68 +24,117 @@ class CachedLibraries(
         implicitCacheDirectories: List<File>
 ) {
     enum class Kind { DYNAMIC, STATIC }
-    enum class Granularity { MODULE, FILE }
 
-    private fun Kind.toCompilerOutputKind(): CompilerOutputKind = when (this) {
-        Kind.DYNAMIC -> CompilerOutputKind.DYNAMIC_CACHE
-        Kind.STATIC -> CompilerOutputKind.STATIC_CACHE
+    sealed class BitcodeDependency(val libName: String) {
+        class WholeModule(libName: String) : BitcodeDependency(libName)
+
+        class CertainFiles(libName: String, val files: List<String>) : BitcodeDependency(libName)
     }
 
-    inner class Cache(val kind: Kind, val granularity: Granularity, val path: String) {
-        val fileDirs by lazy { File(path).listFiles.filter { it.isDirectory }.sortedBy { it.name } }
+    sealed class Cache(protected val target: KonanTarget, val kind: Kind, val path: String) {
+        val bitcodeDependencies by lazy { computeBitcodeDependencies() }
+        val binariesPaths by lazy { computeBinariesPaths() }
+        val serializedInlineFunctionBodies by lazy { computeSerializedInlineFunctionBodies() }
+        val serializedClassFields by lazy { computeSerializedClassFields() }
+        val serializedEagerInitializedFiles by lazy { computeSerializedEagerInitializedFiles() }
 
-        val bitcodeDependencies by lazy {
-            when (granularity) {
-                Granularity.MODULE -> File(path).parentFile.child(BITCODE_DEPENDENCIES_FILE_NAME).readStrings()
-                Granularity.FILE -> fileDirs.flatMap {
-                    it.child(PER_FILE_CACHE_BINARY_LEVEL_DIR_NAME).child(BITCODE_DEPENDENCIES_FILE_NAME).readStrings()
-                }.distinct()
+        protected abstract fun computeBitcodeDependencies(): List<BitcodeDependency>
+        protected abstract fun computeBinariesPaths(): List<String>
+        protected abstract fun computeSerializedInlineFunctionBodies(): List<SerializedInlineFunctionReference>
+        protected abstract fun computeSerializedClassFields(): List<SerializedClassFields>
+        protected abstract fun computeSerializedEagerInitializedFiles(): List<SerializedEagerInitializedFile>
+
+        protected fun Kind.toCompilerOutputKind(): CompilerOutputKind = when (this) {
+            Kind.DYNAMIC -> CompilerOutputKind.DYNAMIC_CACHE
+            Kind.STATIC -> CompilerOutputKind.STATIC_CACHE
+        }
+
+        protected fun parseDependencies(dependencies: List<String>): List<BitcodeDependency> {
+            val wholeModuleDependencies = mutableListOf<String>()
+            val fileDependencies = mutableMapOf<String, MutableList<String>>()
+            for (dependency in dependencies) {
+                val delimiterIndex = dependency.lastIndexOf(DEPENDENCIES_DELIMITER)
+                require(delimiterIndex >= 0) { "Invalid dependency $dependency of library $path" }
+                val libName = dependency.substring(0, delimiterIndex)
+                val file = dependency.substring(delimiterIndex + 1, dependency.length)
+                if (file.isEmpty())
+                    wholeModuleDependencies.add(libName)
+                else
+                    fileDependencies.getOrPut(libName) { mutableListOf() }.add(file)
+            }
+            return wholeModuleDependencies.map { BitcodeDependency.WholeModule(it) } +
+                    fileDependencies.map { (libName, files) -> BitcodeDependency.CertainFiles(libName, files) }
+        }
+
+        class Monolithic(target: KonanTarget, kind: Kind, path: String) : Cache(target, kind, path) {
+            override fun computeBitcodeDependencies() =
+                    parseDependencies(File(path).parentFile.child(BITCODE_DEPENDENCIES_FILE_NAME).readStrings())
+
+            override fun computeBinariesPaths() = listOf(path)
+
+            override fun computeSerializedInlineFunctionBodies() = mutableListOf<SerializedInlineFunctionReference>().also {
+                val directory = File(path).absoluteFile.parentFile.parentFile
+                val data = directory.child(PER_FILE_CACHE_IR_LEVEL_DIR_NAME).child(INLINE_FUNCTION_BODIES_FILE_NAME).readBytes()
+                InlineFunctionBodyReferenceSerializer.deserializeTo(data, it)
+            }
+
+            override fun computeSerializedClassFields() = mutableListOf<SerializedClassFields>().also {
+                val directory = File(path).absoluteFile.parentFile.parentFile
+                val data = directory.child(PER_FILE_CACHE_IR_LEVEL_DIR_NAME).child(CLASS_FIELDS_FILE_NAME).readBytes()
+                ClassFieldsSerializer.deserializeTo(data, it)
+            }
+
+            override fun computeSerializedEagerInitializedFiles() = mutableListOf<SerializedEagerInitializedFile>().also {
+                val directory = File(path).absoluteFile.parentFile.parentFile
+                val data = directory.child(PER_FILE_CACHE_IR_LEVEL_DIR_NAME).child(EAGER_INITIALIZED_PROPERTIES_FILE_NAME).readBytes()
+                EagerInitializedPropertySerializer.deserializeTo(data, it)
             }
         }
 
-        val binariesPaths by lazy {
-            when (granularity) {
-                Granularity.MODULE -> listOf(path)
-                Granularity.FILE -> fileDirs.map {
-                    it.child(PER_FILE_CACHE_BINARY_LEVEL_DIR_NAME).child(getArtifactName(it.name, kind.toCompilerOutputKind())).absolutePath
+        class PerFile(target: KonanTarget, kind: Kind, path: String) : Cache(target, kind, path) {
+            private val fileDirs by lazy { File(path).listFiles.filter { it.isDirectory }.sortedBy { it.name } }
+
+            private val perFileBitcodeDependencies by lazy {
+                fileDirs.associate {
+                    it.name to parseDependencies(it.child(PER_FILE_CACHE_BINARY_LEVEL_DIR_NAME).child(BITCODE_DEPENDENCIES_FILE_NAME).readStrings())
                 }
             }
-        }
 
-        val serializedInlineFunctionBodies by lazy {
-            val result = mutableListOf<SerializedInlineFunctionReference>()
-            when (granularity) {
-                Granularity.MODULE -> {
-                    val directory = File(path).absoluteFile.parentFile.parentFile
-                    val data = directory.child(PER_FILE_CACHE_IR_LEVEL_DIR_NAME).child(INLINE_FUNCTION_BODIES_FILE_NAME).readBytes()
-                    InlineFunctionBodyReferenceSerializer.deserializeTo(data, result)
-                }
-                Granularity.FILE -> {
-                    fileDirs.forEach { fileDir ->
-                        val data = fileDir.child(PER_FILE_CACHE_IR_LEVEL_DIR_NAME).child(INLINE_FUNCTION_BODIES_FILE_NAME).readBytes()
-                        InlineFunctionBodyReferenceSerializer.deserializeTo(data, result)
+            fun getFileDependencies(file: String) =
+                    perFileBitcodeDependencies[file] ?: error("File $file is not found in cache $path")
+
+            fun getFileBinaryPath(file: String) =
+                    File(path).child(file).child(PER_FILE_CACHE_BINARY_LEVEL_DIR_NAME).child(getArtifactName(target, file, kind.toCompilerOutputKind())).let {
+                        require(it.exists) { "File $file is not found in cache $path" }
+                        it.absolutePath
                     }
-                }
-            }
-            result
-        }
 
-        val serializedClassFields by lazy {
-            val result = mutableListOf<SerializedClassFields>()
-            when (granularity) {
-                Granularity.MODULE -> {
-                    val directory = File(path).absoluteFile.parentFile.parentFile
-                    val data = directory.child(PER_FILE_CACHE_IR_LEVEL_DIR_NAME).child(CLASS_FIELDS_FILE_NAME).readBytes()
-                    ClassFieldsSerializer.deserializeTo(data, result)
-                }
-                Granularity.FILE -> {
-                    fileDirs.forEach { fileDir ->
-                        val data = fileDir.child(PER_FILE_CACHE_IR_LEVEL_DIR_NAME).child(CLASS_FIELDS_FILE_NAME).readBytes()
-                        ClassFieldsSerializer.deserializeTo(data, result)
-                    }
+            override fun computeBitcodeDependencies() = perFileBitcodeDependencies.values.flatten()
+
+            override fun computeBinariesPaths() = fileDirs.map {
+                it.child(PER_FILE_CACHE_BINARY_LEVEL_DIR_NAME).child(getArtifactName(target, it.name, kind.toCompilerOutputKind())).absolutePath
+            }
+
+            override fun computeSerializedInlineFunctionBodies() = mutableListOf<SerializedInlineFunctionReference>().also {
+                fileDirs.forEach { fileDir ->
+                    val data = fileDir.child(PER_FILE_CACHE_IR_LEVEL_DIR_NAME).child(INLINE_FUNCTION_BODIES_FILE_NAME).readBytes()
+                    InlineFunctionBodyReferenceSerializer.deserializeTo(data, it)
+                }
+            }
+
+            override fun computeSerializedClassFields() = mutableListOf<SerializedClassFields>().also {
+                fileDirs.forEach { fileDir ->
+                    val data = fileDir.child(PER_FILE_CACHE_IR_LEVEL_DIR_NAME).child(CLASS_FIELDS_FILE_NAME).readBytes()
+                    ClassFieldsSerializer.deserializeTo(data, it)
+                }
+            }
+
+            override fun computeSerializedEagerInitializedFiles() = mutableListOf<SerializedEagerInitializedFile>().also {
+                fileDirs.forEach { fileDir ->
+                    val data = fileDir.child(PER_FILE_CACHE_IR_LEVEL_DIR_NAME).child(EAGER_INITIALIZED_PROPERTIES_FILE_NAME).readBytes()
+                    EagerInitializedPropertySerializer.deserializeTo(data, it)
                 }
             }
-            result
         }
     }
 
@@ -100,16 +151,16 @@ class CachedLibraries(
             cacheBinaryPartDir.listFilesOrEmpty.map { it.absolutePath }.toSet()
         }
         val baseName = getCachedLibraryName(library)
-        val dynamicFile = cacheBinaryPartDir.child(getArtifactName(baseName, CompilerOutputKind.DYNAMIC_CACHE))
-        val staticFile = cacheBinaryPartDir.child(getArtifactName(baseName, CompilerOutputKind.STATIC_CACHE))
+        val dynamicFile = cacheBinaryPartDir.child(getArtifactName(target, baseName, CompilerOutputKind.DYNAMIC_CACHE))
+        val staticFile = cacheBinaryPartDir.child(getArtifactName(target, baseName, CompilerOutputKind.STATIC_CACHE))
 
         if (dynamicFile.absolutePath in cacheBinaryPartDirContents && staticFile.absolutePath in cacheBinaryPartDirContents)
             error("Both dynamic and static caches files cannot be in the same directory." +
                     " Library: ${library.libraryName}, path to cache: ${cacheDir.absolutePath}")
         return when {
-            dynamicFile.absolutePath in cacheBinaryPartDirContents -> Cache(Kind.DYNAMIC, Granularity.MODULE, dynamicFile.absolutePath)
-            staticFile.absolutePath in cacheBinaryPartDirContents -> Cache(Kind.STATIC, Granularity.MODULE, staticFile.absolutePath)
-            else -> Cache(Kind.STATIC, Granularity.FILE, cacheDir.absolutePath)
+            dynamicFile.absolutePath in cacheBinaryPartDirContents -> Cache.Monolithic(target, Kind.DYNAMIC, dynamicFile.absolutePath)
+            staticFile.absolutePath in cacheBinaryPartDirContents -> Cache.Monolithic(target, Kind.STATIC, staticFile.absolutePath)
+            else -> Cache.PerFile(target, Kind.STATIC, cacheDir.absolutePath)
         }
     }
 
@@ -129,9 +180,6 @@ class CachedLibraries(
         cache?.let { library to it }
     }.toMap()
 
-    private fun getArtifactName(baseName: String, kind: CompilerOutputKind) =
-            "${kind.prefix(target)}$baseName${kind.suffix(target)}"
-
     fun isLibraryCached(library: KotlinLibrary): Boolean =
             getLibraryCache(library) != null
 
@@ -163,5 +211,8 @@ class CachedLibraries(
         const val BITCODE_DEPENDENCIES_FILE_NAME = "bitcode_deps"
         const val INLINE_FUNCTION_BODIES_FILE_NAME = "inline_bodies"
         const val CLASS_FIELDS_FILE_NAME = "class_fields"
+        const val EAGER_INITIALIZED_PROPERTIES_FILE_NAME = "eager_init"
+
+        const val DEPENDENCIES_DELIMITER = '|'
     }
 }

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

@@ -37,25 +37,22 @@ private class CallsChecker(generationState: NativeGenerationState, goodFunctions
     private fun moduleFunction(name: String) =
             LLVMGetNamedFunction(llvm.module, name) ?: throw IllegalStateException("$name function is not available")
 
-    val getMethodImpl = llvm.externalFunction(LlvmFunctionProto(
+    val getMethodImpl = llvm.externalNativeRuntimeFunction(
             "class_getMethodImplementation",
             LlvmRetType(pointerType(functionType(llvm.voidType, false))),
-            listOf(LlvmParamType(llvm.int8PtrType), LlvmParamType(llvm.int8PtrType)),
-            origin = context.stdlibModule.llvmSymbolOrigin)
+            listOf(LlvmParamType(llvm.int8PtrType), LlvmParamType(llvm.int8PtrType))
     )
 
-    val getClass = llvm.externalFunction(LlvmFunctionProto(
+    val getClass = llvm.externalNativeRuntimeFunction(
             "object_getClass",
             LlvmRetType(llvm.int8PtrType),
-            listOf(LlvmParamType(llvm.int8PtrType)),
-            origin = context.stdlibModule.llvmSymbolOrigin)
+            listOf(LlvmParamType(llvm.int8PtrType))
     )
 
-    val getSuperClass = llvm.externalFunction(LlvmFunctionProto(
+    val getSuperClass = llvm.externalNativeRuntimeFunction(
             "class_getSuperclass",
             LlvmRetType(llvm.int8PtrType),
-            listOf(LlvmParamType(llvm.int8PtrType)),
-            origin = context.stdlibModule.llvmSymbolOrigin)
+            listOf(LlvmParamType(llvm.int8PtrType))
     )
 
     val checkerFunction = moduleFunction("Kotlin_mm_checkStateAtExternalFunctionCall")

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

@@ -60,7 +60,7 @@ internal val NativeGenerationState.shouldDefineCachedBoxes: Boolean
 
 internal val NativeGenerationState.shouldLinkRuntimeNativeLibraries: Boolean
     get() = producedLlvmModuleContainsStdlib &&
-            cacheDeserializationStrategy?.contains(KonanFqNames.packageName, "Runtime.kt") != false
+            cacheDeserializationStrategy?.contains(KonanFqNames.internalPackageName, "Runtime.kt") != false
 
 val KonanConfig.involvesLinkStage: Boolean
     get() = when (this.produce) {

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

@@ -1,7 +1,9 @@
 package org.jetbrains.kotlin.backend.konan
 
 import org.jetbrains.kotlin.backend.konan.driver.PhaseContext
+import org.jetbrains.kotlin.backend.konan.llvm.Llvm
 import org.jetbrains.kotlin.backend.konan.serialization.ClassFieldsSerializer
+import org.jetbrains.kotlin.backend.konan.serialization.EagerInitializedPropertySerializer
 import org.jetbrains.kotlin.backend.konan.serialization.InlineFunctionBodyReferenceSerializer
 import org.jetbrains.kotlin.konan.KonanExternalToolFailure
 import org.jetbrains.kotlin.konan.exec.Command
@@ -55,17 +57,33 @@ internal class CacheStorage(val generationState: NativeGenerationState) {
         saveCacheBitcodeDependencies()
         saveInlineFunctionBodies()
         saveClassFields()
+        saveEagerInitializedProperties()
     }
 
     private fun saveCacheBitcodeDependencies() {
-        val bitcodeDependencies = config.resolvedLibraries
+        val libraryToCache = config.cacheSupport.libraryToCache!!
+        val usedBitcode = generationState.llvmImports.usedBitcode().groupBy { it.library }
+        val bitcodeModuleDependencies = mutableListOf<String>()
+        val bitcodeFileDependencies = mutableListOf<String>()
+        val strategy = libraryToCache.strategy as? CacheDeserializationStrategy.SingleFile
+        config.resolvedLibraries
                 .getFullList(TopologicalLibraryOrder)
-                .map { it as KonanLibrary }
-                .filter {
-                    generationState.llvmImports.bitcodeIsUsed(it)
-                            && it != config.cacheSupport.libraryToCache?.klib // Skip loops.
+                .forEach { library ->
+                    require(library is KonanLibrary)
+                    val filesUsed = usedBitcode[library]
+                    if (filesUsed == null && generationState.llvmImports.bitcodeIsUsed(library)
+                            && library != libraryToCache.klib /* Skip loops */) {
+                        // Dependency on the entire library.
+                        bitcodeModuleDependencies.add("${library.uniqueName}${CachedLibraries.DEPENDENCIES_DELIMITER}")
+                    }
+                    filesUsed?.forEach { libraryFile ->
+                        if (library != libraryToCache.klib || strategy?.filePath != libraryFile.filePath /* Skip loops */) {
+                            val fileId = CacheSupport.cacheFileId(libraryFile.fqName, libraryFile.filePath)
+                            bitcodeFileDependencies.add("${library.uniqueName}${CachedLibraries.DEPENDENCIES_DELIMITER}$fileId")
+                        }
+                    }
                 }
-        outputFiles.bitcodeDependenciesFile!!.writeLines(bitcodeDependencies.map { it.uniqueName })
+        outputFiles.bitcodeDependenciesFile!!.writeLines(bitcodeModuleDependencies + bitcodeFileDependencies)
     }
 
     private fun saveInlineFunctionBodies() {
@@ -77,6 +95,11 @@ internal class CacheStorage(val generationState: NativeGenerationState) {
         outputFiles.classFieldsFile!!.writeBytes(
                 ClassFieldsSerializer.serialize(generationState.classFields))
     }
+
+    private fun saveEagerInitializedProperties() {
+        outputFiles.eagerInitializedPropertiesFile!!.writeBytes(
+                EagerInitializedPropertySerializer.serialize(generationState.eagerInitializedFiles))
+    }
 }
 
 // TODO: We have a Linker.kt file in the shared module.
@@ -239,7 +262,8 @@ private fun determineCachesToLink(generationState: NativeGenerationState): Cache
     val staticCaches = mutableListOf<String>()
     val dynamicCaches = mutableListOf<String>()
 
-    generationState.llvm.allCachedBitcodeDependencies.forEach { library ->
+    generationState.llvm.allCachedBitcodeDependencies.forEach { dependency ->
+        val library = dependency.library
         val currentBinaryContainsLibrary = generationState.llvmModuleSpecification.containsLibrary(library)
         val cache = generationState.config.cachedLibraries.getLibraryCache(library)
                 ?: error("Library $library is expected to be cached")
@@ -253,7 +277,9 @@ private fun determineCachesToLink(generationState: NativeGenerationState): Cache
             CachedLibraries.Kind.STATIC -> staticCaches
         }
 
-        list += cache.binariesPaths
+        list += if (dependency is Llvm.CachedBitcodeDependency.CertainFiles && cache is CachedLibraries.Cache.PerFile)
+            dependency.files.map { cache.getFileBinaryPath(it) }
+        else cache.binariesPaths
     }
     return CachesToLink(static = staticCaches, dynamic = dynamicCaches)
 }

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

@@ -6,18 +6,22 @@
 package org.jetbrains.kotlin.backend.konan
 
 import llvm.*
+import org.jetbrains.kotlin.backend.konan.descriptors.isFromInteropLibrary
 import org.jetbrains.kotlin.backend.konan.driver.BasicPhaseContext
+import org.jetbrains.kotlin.backend.konan.ir.llvmSymbolOrigin
 import org.jetbrains.kotlin.backend.konan.llvm.*
 import org.jetbrains.kotlin.backend.konan.llvm.coverage.CoverageManager
 import org.jetbrains.kotlin.backend.konan.objcexport.ObjCExport
 import org.jetbrains.kotlin.backend.konan.serialization.SerializedClassFields
+import org.jetbrains.kotlin.backend.konan.serialization.SerializedEagerInitializedFile
 import org.jetbrains.kotlin.backend.konan.serialization.SerializedInlineFunctionReference
-import org.jetbrains.kotlin.ir.declarations.IrAttributeContainer
-import org.jetbrains.kotlin.ir.declarations.IrClass
-import org.jetbrains.kotlin.ir.declarations.IrFile
-import org.jetbrains.kotlin.ir.declarations.IrFunction
+import org.jetbrains.kotlin.ir.declarations.*
+import org.jetbrains.kotlin.ir.util.getPackageFragment
 import org.jetbrains.kotlin.konan.TempFiles
 import org.jetbrains.kotlin.konan.file.File
+import org.jetbrains.kotlin.library.metadata.CompiledKlibFileOrigin
+import org.jetbrains.kotlin.library.metadata.CurrentKlibModuleOrigin
+import org.jetbrains.kotlin.library.metadata.DeserializedKlibModuleOrigin
 
 internal class InlineFunctionOriginInfo(val irFunction: IrFunction, val irFile: IrFile, val startOffset: Int, val endOffset: Int)
 
@@ -61,6 +65,7 @@ internal class NativeGenerationState(
 
     val inlineFunctionBodies = mutableListOf<SerializedInlineFunctionReference>()
     val classFields = mutableListOf<SerializedClassFields>()
+    val eagerInitializedFiles = mutableListOf<SerializedEagerInitializedFile>()
     val calledFromExportedInlineFunctions = mutableSetOf<IrFunction>()
     val constructedFromExportedInlineFunctions = mutableSetOf<IrClass>()
     val loweredInlineFunctions = mutableMapOf<IrFunction, InlineFunctionOriginInfo>()
@@ -105,6 +110,25 @@ internal class NativeGenerationState(
 
     lateinit var objCExport: ObjCExport
 
+    fun computeOrigin(declaration: IrDeclaration): CompiledKlibFileOrigin {
+        val packageFragment = declaration.getPackageFragment()
+        return if (packageFragment.isFunctionInterfaceFile)
+            CompiledKlibFileOrigin.StdlibKFunctionImpl
+        else {
+            val library = when (val origin = declaration.llvmSymbolOrigin) {
+                CurrentKlibModuleOrigin -> config.libraryToCache?.klib?.takeIf { config.producePerFileCache }
+                else -> (origin as DeserializedKlibModuleOrigin).library
+            }
+            when {
+                library == null -> CompiledKlibFileOrigin.CurrentFile
+                packageFragment.packageFragmentDescriptor.containingDeclaration.isFromInteropLibrary() ->
+                    CompiledKlibFileOrigin.EntireModule(library)
+                else -> CompiledKlibFileOrigin.CertainFile(library, packageFragment.fqName.asString(),
+                        context.irLinker.getExternalDeclarationFileName(declaration))
+            }
+        }
+    }
+
     fun hasDebugInfo() = debugInfoDelegate.isInitialized()
 
     fun verifyBitCode() {

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

@@ -73,6 +73,8 @@ class OutputFiles(val outputName: String, target: KonanTarget, val produce: Comp
 
     val classFieldsFile = tempCacheDirectory?.cacheIrPart()?.child(CachedLibraries.CLASS_FIELDS_FILE_NAME)
 
+    val eagerInitializedPropertiesFile = tempCacheDirectory?.cacheIrPart()?.child(CachedLibraries.EAGER_INITIALIZED_PROPERTIES_FILE_NAME)
+
     private fun String.fullOutputName() = prefixBaseNameIfNeeded(prefix).suffixIfNeeded(suffix)
 
     private fun String.prefixBaseNameIfNeeded(prefix: String) =

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

@@ -17,6 +17,7 @@ import org.jetbrains.kotlin.ir.declarations.IrFile
 import org.jetbrains.kotlin.ir.declarations.IrModuleFragment
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.konan.target.CompilerOutputKind
+import org.jetbrains.kotlin.library.metadata.DeserializedKlibModuleOrigin
 import org.jetbrains.kotlin.name.FqName
 
 internal fun moduleValidationCallback(state: ActionState, module: IrModuleFragment, context: Context) {

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/driver/phases/TopLevelPhases.kt

@@ -11,11 +11,17 @@ import org.jetbrains.kotlin.backend.konan.driver.PhaseEngine
 import org.jetbrains.kotlin.backend.konan.driver.runPhaseInParentContext
 import org.jetbrains.kotlin.backend.konan.llvm.linkBitcodeDependenciesPhase
 import org.jetbrains.kotlin.backend.konan.llvm.printBitcodePhase
+import org.jetbrains.kotlin.backend.konan.llvm.standardLlvmSymbolsOrigin
 import org.jetbrains.kotlin.backend.konan.llvm.verifyBitcodePhase
 import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
+import org.jetbrains.kotlin.ir.declarations.IrClass
+import org.jetbrains.kotlin.ir.declarations.IrDeclaration
 import org.jetbrains.kotlin.ir.declarations.IrModuleFragment
 import org.jetbrains.kotlin.ir.declarations.path
+import org.jetbrains.kotlin.ir.util.hasAnnotation
 import org.jetbrains.kotlin.konan.target.CompilerOutputKind
+import org.jetbrains.kotlin.library.metadata.CompiledKlibFileOrigin
+import org.jetbrains.kotlin.library.metadata.DeserializedKlibModuleOrigin
 
 internal fun PhaseEngine<PhaseContext>.runFrontend(config: KonanConfig, environment: KotlinCoreEnvironment): FrontendPhaseOutput.Full? {
     val frontendOutput = useContext(FrontendContextImpl(config)) { it.runFrontend(environment) }
@@ -57,6 +63,14 @@ internal fun <C : PhaseContext> PhaseEngine<C>.runBackend(backendContext: Contex
     }
 }
 
+private fun isReferencedByNativeRuntime(declarations: List<IrDeclaration>): Boolean =
+        declarations.any {
+            it.hasAnnotation(RuntimeNames.exportTypeInfoAnnotation)
+                    || it.hasAnnotation(RuntimeNames.exportForCppRuntime)
+        } || declarations.any {
+            it is IrClass && isReferencedByNativeRuntime(it.declarations)
+        }
+
 internal fun PhaseEngine<out Context>.processModuleFragments(
         input: IrModuleFragment,
         action: (NativeGenerationState, IrModuleFragment) -> Unit
@@ -66,21 +80,35 @@ internal fun PhaseEngine<out Context>.processModuleFragments(
 
     val files = module.files.toList()
     module.files.clear()
-    val functionInterfaceFiles = files.filter { it.isFunctionInterfaceFile }
+
+    val stdlibIsBeingCached = module.descriptor == context.stdlibModule
+    val functionInterfaceFiles = files.takeIf { stdlibIsBeingCached }
+            ?.filter { it.isFunctionInterfaceFile }.orEmpty()
+    val filesReferencedByNativeRuntime = files.takeIf { stdlibIsBeingCached }
+            ?.filter { isReferencedByNativeRuntime(it.declarations) }.orEmpty()
 
     for (file in files) {
         if (file.isFunctionInterfaceFile) continue
 
-        context.generationState = NativeGenerationState(
+        val generationState = NativeGenerationState(
                 context.config,
                 context,
                 CacheDeserializationStrategy.SingleFile(file.path, file.fqName.asString())
         )
+        context.generationState = generationState
 
         module.files += file
-        if (context.generationState.shouldDefineFunctionClasses)
+        if (generationState.shouldDefineFunctionClasses)
             module.files += functionInterfaceFiles
 
+        if (generationState.shouldLinkRuntimeNativeLibraries) {
+            val stdlib = (context.standardLlvmSymbolsOrigin as DeserializedKlibModuleOrigin).library
+            filesReferencedByNativeRuntime.forEach {
+                generationState.llvmImports.add(
+                        CompiledKlibFileOrigin.CertainFile(stdlib, it.fqName.asString(), it.path))
+            }
+        }
+
         action(context.generationState, input)
 
         module.files.clear()

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

@@ -17,11 +17,11 @@ import org.jetbrains.kotlin.backend.konan.llvm.ThreadState.Runnable
 import org.jetbrains.kotlin.backend.konan.llvm.objc.*
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.ir.declarations.*
+import org.jetbrains.kotlin.library.metadata.CompiledKlibFileOrigin
 import org.jetbrains.kotlin.ir.expressions.*
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.konan.ForeignExceptionMode
 import org.jetbrains.kotlin.konan.target.CompilerOutputKind
-import org.jetbrains.kotlin.library.metadata.CompiledKlibModuleOrigin
 
 
 internal class CodeGenerator(override val generationState: NativeGenerationState) : ContextUtils {
@@ -1265,21 +1265,20 @@ internal abstract class FunctionGenerationContext(
         assert(!irClass.isInterface)
 
         return if (irClass.isExternalObjCClass()) {
-            val llvmSymbolOrigin = irClass.llvmSymbolOrigin
+            val origin = generationState.computeOrigin(irClass)
 
             if (irClass.isObjCMetaClass()) {
                 val name = irClass.descriptor.getExternalObjCMetaClassBinaryName()
-                val objCClass = getObjCClass(name, llvmSymbolOrigin)
+                val objCClass = getObjCClass(name, origin)
 
-                val getClass = llvm.externalFunction(LlvmFunctionProto(
+                val getClass = llvm.externalNativeRuntimeFunction(
                         "object_getClass",
                         LlvmRetType(llvm.int8PtrType),
-                        listOf(LlvmParamType(llvm.int8PtrType)),
-                        origin = context.standardLlvmSymbolsOrigin
-                ))
+                        listOf(LlvmParamType(llvm.int8PtrType))
+                )
                 call(getClass, listOf(objCClass), exceptionHandler = exceptionHandler)
             } else {
-                getObjCClass(irClass.descriptor.getExternalObjCClassBinaryName(), llvmSymbolOrigin)
+                getObjCClass(irClass.descriptor.getExternalObjCClassBinaryName(), origin)
             }
         } else {
             if (irClass.isObjCMetaClass()) {
@@ -1303,8 +1302,8 @@ internal abstract class FunctionGenerationContext(
         }
     }
 
-    fun getObjCClass(binaryName: String, llvmSymbolOrigin: CompiledKlibModuleOrigin): LLVMValueRef {
-        llvm.imports.add(llvmSymbolOrigin)
+    fun getObjCClass(binaryName: String, origin: CompiledKlibFileOrigin): LLVMValueRef {
+        llvm.imports.add(origin)
         return load(codegen.objCDataGenerator!!.genClassRef(binaryName).llvm)
     }
 
@@ -1467,17 +1466,15 @@ internal abstract class FunctionGenerationContext(
     }
 
     private val kotlinExceptionRtti: ConstPointer
-        get() = constPointer(importGlobal(
+        get() = constPointer(importNativeRuntimeGlobal(
                 "_ZTI18ExceptionObjHolder", // typeinfo for ObjHolder
-                llvm.int8PtrType,
-                origin = context.stdlibModule.llvmSymbolOrigin
+                llvm.int8PtrType
         )).bitcast(llvm.int8PtrType)
 
     private val objcNSExceptionRtti: ConstPointer by lazy {
-        constPointer(importGlobal(
+        constPointer(importNativeRuntimeGlobal(
                 "OBJC_EHTYPE_\$_NSException", // typeinfo for NSException*
-                llvm.int8PtrType,
-                origin = context.stdlibModule.llvmSymbolOrigin
+                llvm.int8PtrType
         )).bitcast(llvm.int8PtrType)
     }
 

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

@@ -8,18 +8,24 @@ package org.jetbrains.kotlin.backend.konan.llvm
 import kotlinx.cinterop.toCValues
 import kotlinx.cinterop.toKString
 import llvm.*
+import org.jetbrains.kotlin.backend.common.atMostOne
 import org.jetbrains.kotlin.backend.konan.*
+import org.jetbrains.kotlin.backend.konan.Context
+import org.jetbrains.kotlin.backend.konan.descriptors.isInteropLibrary
+import org.jetbrains.kotlin.library.metadata.resolver.TopologicalLibraryOrder
 import org.jetbrains.kotlin.backend.konan.ir.llvmSymbolOrigin
+import org.jetbrains.kotlin.descriptors.konan.*
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.konan.library.KonanLibrary
 import org.jetbrains.kotlin.konan.target.KonanTarget
 import org.jetbrains.kotlin.library.KotlinLibrary
 import org.jetbrains.kotlin.library.metadata.CompiledKlibModuleOrigin
+import org.jetbrains.kotlin.library.metadata.CompiledKlibFileOrigin
 import org.jetbrains.kotlin.library.metadata.CurrentKlibModuleOrigin
 import org.jetbrains.kotlin.library.metadata.DeserializedKlibModuleOrigin
-import org.jetbrains.kotlin.library.metadata.resolver.TopologicalLibraryOrder
 import org.jetbrains.kotlin.library.uniqueName
+import org.jetbrains.kotlin.name.FqName
 import kotlin.properties.ReadOnlyProperty
 import kotlin.reflect.KProperty
 
@@ -215,8 +221,7 @@ internal interface ContextUtils : RuntimeAware {
                     this.computePrivateTypeInfoSymbolName(context.irLinker.getExternalDeclarationFileName(this))
                 }
 
-                constPointer(importGlobal(typeInfoSymbolName, runtime.typeInfoType,
-                        origin = this.llvmSymbolOrigin))
+                constPointer(importGlobal(typeInfoSymbolName, runtime.typeInfoType, generationState.computeOrigin(this)))
             } else {
                 generationState.llvmDeclarations.forClass(this).typeInfo
             }
@@ -359,6 +364,21 @@ internal class Llvm(private val generationState: NativeGenerationState, val modu
         }
     }
 
+    internal fun externalNativeRuntimeFunction(
+            name: String,
+            returnType: LlvmRetType,
+            parameterTypes: List<LlvmParamType> = emptyList(),
+            functionAttributes: List<LlvmFunctionAttribute> = emptyList(),
+            isVararg: Boolean = false
+    ) = externalFunction(
+            LlvmFunctionProto(name, returnType, parameterTypes, functionAttributes,
+                    origin = CompiledKlibFileOrigin.StdlibRuntime,
+                    isVararg, independent = false)
+    )
+
+    internal fun externalNativeRuntimeFunction(name: String, signature: LlvmFunctionSignature) =
+            externalNativeRuntimeFunction(name, signature.returnType, signature.parameterTypes, signature.functionAttributes, signature.isVararg)
+
     val imports get() = generationState.llvmImports
 
     class ImportsImpl(private val context: Context) : LlvmImports {
@@ -366,27 +386,48 @@ internal class Llvm(private val generationState: NativeGenerationState, val modu
         private val usedBitcode = mutableSetOf<KotlinLibrary>()
         private val usedNativeDependencies = mutableSetOf<KotlinLibrary>()
 
+        private val usedBitcodeOfFile = mutableSetOf<LlvmImports.LibraryFile>()
+
         private val allLibraries by lazy { context.librariesWithDependencies.toSet() }
 
-        override fun add(origin: CompiledKlibModuleOrigin, onlyBitcode: Boolean) {
-            val library = when (origin) {
-                CurrentKlibModuleOrigin -> return
-                is DeserializedKlibModuleOrigin -> origin.library
-            }
+        private fun findStdlibFile(fqName: FqName, fileName: String): LlvmImports.LibraryFile {
+            val stdlib = (context.standardLlvmSymbolsOrigin as? DeserializedKlibModuleOrigin)?.library
+                    ?: error("Can't find stdlib")
+            val stdlibDeserializer = context.irLinker.moduleDeserializers[context.stdlibModule]
+                    ?: error("No deserializer for stdlib")
+            val file = stdlibDeserializer.files.atMostOne { it.fqName == fqName && it.name == fileName }
+                    ?: error("Can't find $fqName:$fileName in stdlib")
+            return LlvmImports.LibraryFile(stdlib, file.fqName.asString(), file.path)
+        }
 
-            if (library !in allLibraries) {
-                error("Library (${library.libraryName}) is used but not requested.\nRequested libraries: ${allLibraries.joinToString { it.libraryName }}")
+        private val stdlibRuntime by lazy { findStdlibFile(KonanFqNames.internalPackageName, "Runtime.kt") }
+        private val stdlibKFunctionImpl by lazy { findStdlibFile(KonanFqNames.internalPackageName, "KFunctionImpl.kt") }
+
+        override fun add(origin: CompiledKlibFileOrigin, onlyBitcode: Boolean) {
+            val libraryFile = when (origin) {
+                CompiledKlibFileOrigin.CurrentFile -> return
+                is CompiledKlibFileOrigin.EntireModule -> null
+                is CompiledKlibFileOrigin.CertainFile -> LlvmImports.LibraryFile(origin.library, origin.fqName, origin.filePath)
+                CompiledKlibFileOrigin.StdlibRuntime -> stdlibRuntime
+                CompiledKlibFileOrigin.StdlibKFunctionImpl -> stdlibKFunctionImpl
             }
+            val library = libraryFile?.library ?: (origin as CompiledKlibFileOrigin.EntireModule).library
+            if (library !in allLibraries)
+                error("Library (${library.libraryName}) is used but not requested.\nRequested libraries: ${allLibraries.joinToString { it.libraryName }}")
 
             usedBitcode.add(library)
             if (!onlyBitcode) {
                 usedNativeDependencies.add(library)
             }
+
+            libraryFile?.let { usedBitcodeOfFile.add(it) }
         }
 
         override fun bitcodeIsUsed(library: KonanLibrary) = library in usedBitcode
 
         override fun nativeDependenciesAreUsed(library: KonanLibrary) = library in usedNativeDependencies
+
+        override fun usedBitcode(): List<LlvmImports.LibraryFile> = usedBitcodeOfFile.toList()
     }
 
     val nativeDependenciesToLink: List<KonanLibrary> by lazy {
@@ -403,47 +444,117 @@ internal class Llvm(private val generationState: NativeGenerationState, val modu
                 .filter { (!it.isDefault && !context.config.purgeUserLibs) || imports.bitcodeIsUsed(it) }
     }
 
-    val allCachedBitcodeDependencies: List<KonanLibrary> by lazy {
-        val allLibraries = context.config.resolvedLibraries.getFullList().associateBy { it.uniqueName }
-        val result = mutableSetOf<KonanLibrary>()
+    sealed class CachedBitcodeDependency(val library: KonanLibrary) {
+        class WholeModule(library: KonanLibrary) : CachedBitcodeDependency(library)
 
-        fun addDependencies(cachedLibrary: CachedLibraries.Cache) {
-            cachedLibrary.bitcodeDependencies.forEach {
-                val library = allLibraries[it] ?: error("Bitcode dependency to an unknown library: $it")
-                result.add(library as KonanLibrary)
-                addDependencies(context.config.cachedLibraries.getLibraryCache(library)
-                        ?: error("Library $it is expected to be cached"))
+        class CertainFiles(library: KonanLibrary, val files: List<String>) : CachedBitcodeDependency(library)
+    }
+
+    private inner class CachedBitcodeDependenciesComputer {
+        private val allLibraries = context.config.resolvedLibraries.getFullList().associateBy { it.uniqueName }
+        private val usedBitcode = imports.usedBitcode().groupBy { it.library }
+
+        private val moduleDependencies = mutableSetOf<KonanLibrary>()
+        private val fileDependencies = mutableMapOf<KonanLibrary, MutableSet<String>>()
+
+        val allDependencies: List<CachedBitcodeDependency>
+
+        init {
+            val moduleDeserializers = context.irLinker.moduleDeserializers.values.associateBy { it.klib }
+            for (library in immediateBitcodeDependencies) {
+                if (library == context.config.libraryToCache?.klib) continue
+                val cache = context.config.cachedLibraries.getLibraryCache(library)
+
+                if (cache != null) {
+                    val filesUsed = buildList {
+                        usedBitcode[library]?.forEach {
+                            add(CacheSupport.cacheFileId(it.fqName, it.filePath))
+                        }
+                        val moduleDeserializer = moduleDeserializers[library]
+                        if (moduleDeserializer == null) {
+                            require(library.isInteropLibrary()) { "No module deserializer for cached library ${library.uniqueName}" }
+                        } else {
+                            moduleDeserializer.eagerInitializedFiles.forEach {
+                                add(CacheSupport.cacheFileId(it.fqName.asString(), it.path))
+                            }
+                        }
+                    }
+
+                    if (filesUsed.isEmpty()) {
+                        // This is the case when we depend on the whole module rather than on a number of files.
+                        moduleDependencies.add(library)
+                        addAllDependencies(cache)
+                    } else {
+                        fileDependencies.getOrPut(library) { mutableSetOf() }.addAll(filesUsed)
+                        addDependencies(cache, filesUsed)
+                    }
+                }
             }
+
+            allDependencies = moduleDependencies.map { CachedBitcodeDependency.WholeModule(it) } +
+                    fileDependencies.filterNot { it.key in moduleDependencies }
+                            .map { (library, files) -> CachedBitcodeDependency.CertainFiles(library, files.toList()) }
         }
 
-        for (library in immediateBitcodeDependencies) {
-            if (library == context.config.libraryToCache?.klib) continue
-            val cache = context.config.cachedLibraries.getLibraryCache(library)
-            if (cache != null) {
-                result += library
-                addDependencies(cache)
-            }
+        private fun addAllDependencies(cachedLibrary: CachedLibraries.Cache) {
+            cachedLibrary.bitcodeDependencies.forEach { addDependency(it) }
         }
 
-        result.toList()
+        private fun addDependencies(cachedLibrary: CachedLibraries.Cache, files: List<String>) = when (cachedLibrary) {
+            is CachedLibraries.Cache.Monolithic -> addAllDependencies(cachedLibrary)
+
+            is CachedLibraries.Cache.PerFile ->
+                files.forEach { file ->
+                    cachedLibrary.getFileDependencies(file).forEach { addDependency(it) }
+                }
+        }
+
+        private fun addDependency(dependency: CachedLibraries.BitcodeDependency) {
+            val dependencyLib = (allLibraries[dependency.libName]
+                    ?: error("Bitcode dependency to an unknown library: ${dependency.libName}")) as KonanLibrary
+            if (dependencyLib in moduleDependencies) return
+            val cachedDependency = context.config.cachedLibraries.getLibraryCache(dependencyLib)
+                    ?: error("Library ${dependency.libName} is expected to be cached")
+
+            when (dependency) {
+                is CachedLibraries.BitcodeDependency.WholeModule -> {
+                    moduleDependencies.add(dependencyLib)
+                    addAllDependencies(cachedDependency)
+                }
+                is CachedLibraries.BitcodeDependency.CertainFiles -> {
+                    val handledFiles = fileDependencies.getOrPut(dependencyLib) { mutableSetOf() }
+                    val notHandledFiles = dependency.files.toMutableSet()
+                    notHandledFiles.removeAll(handledFiles)
+                    handledFiles.addAll(notHandledFiles)
+                    if (notHandledFiles.isNotEmpty())
+                        addDependencies(cachedDependency, notHandledFiles.toList())
+                }
+            }
+        }
+    }
+
+    val allCachedBitcodeDependencies: List<CachedBitcodeDependency> by lazy {
+        CachedBitcodeDependenciesComputer().allDependencies
     }
 
     val allNativeDependencies: List<KonanLibrary> by lazy {
-        (nativeDependenciesToLink + allCachedBitcodeDependencies).distinct()
+        (nativeDependenciesToLink + allCachedBitcodeDependencies.map { it.library } /* Native dependencies are per library */).distinct()
     }
 
-    val allBitcodeDependencies: List<KonanLibrary> by lazy {
-        val allNonCachedDependencies = context.librariesWithDependencies.filter {
-            context.config.cachedLibraries.getLibraryCache(it) == null || it == context.config.libraryToCache?.klib
+    val allBitcodeDependencies: List<CachedBitcodeDependency> by lazy {
+        val allBitcodeDependencies = mutableMapOf<KonanLibrary, CachedBitcodeDependency>()
+        for (library in context.librariesWithDependencies) {
+            if (context.config.cachedLibraries.getLibraryCache(library) == null || library == context.config.libraryToCache?.klib)
+                allBitcodeDependencies[library] = CachedBitcodeDependency.WholeModule(library)
         }
-        val set = (allNonCachedDependencies + allCachedBitcodeDependencies).toSet()
+        for (dependency in allCachedBitcodeDependencies)
+            allBitcodeDependencies[dependency.library] = dependency
         // This list is used in particular to build the libraries' initializers chain.
         // The initializers must be called in the topological order, so make sure that the
         // libraries list being returned is also toposorted.
         context.config.resolvedLibraries
                 .getFullList(TopologicalLibraryOrder)
-                .map { it as KonanLibrary }
-                .filter { it in set }
+                .mapNotNull { allBitcodeDependencies[it as KonanLibrary] }
     }
 
     val bitcodeToLink: List<KonanLibrary> by lazy {
@@ -663,35 +774,31 @@ internal class Llvm(private val generationState: NativeGenerationState, val modu
         else -> "__gxx_personality_v0"
     }
 
-    val cxxStdTerminate = externalFunction(LlvmFunctionProto(
+    val cxxStdTerminate = externalNativeRuntimeFunction(
             "_ZSt9terminatev", // mangled C++ 'std::terminate'
             returnType = LlvmRetType(voidType),
-            functionAttributes = listOf(LlvmFunctionAttribute.NoUnwind),
-            origin = context.standardLlvmSymbolsOrigin
-    ))
+            functionAttributes = listOf(LlvmFunctionAttribute.NoUnwind)
+    )
 
-    val gxxPersonalityFunction = externalFunction(LlvmFunctionProto(
+    val gxxPersonalityFunction = externalNativeRuntimeFunction(
             personalityFunctionName,
             returnType = LlvmRetType(int32Type),
             functionAttributes = listOf(LlvmFunctionAttribute.NoUnwind),
-            isVararg = true,
-            origin = context.standardLlvmSymbolsOrigin
-    ))
+            isVararg = true
+    )
 
-    val cxaBeginCatchFunction = externalFunction(LlvmFunctionProto(
+    val cxaBeginCatchFunction = externalNativeRuntimeFunction(
             "__cxa_begin_catch",
             returnType = LlvmRetType(int8PtrType),
             functionAttributes = listOf(LlvmFunctionAttribute.NoUnwind),
-            parameterTypes = listOf(LlvmParamType(int8PtrType)),
-            origin = context.standardLlvmSymbolsOrigin
-    ))
+            parameterTypes = listOf(LlvmParamType(int8PtrType))
+    )
 
-    val cxaEndCatchFunction = externalFunction(LlvmFunctionProto(
+    val cxaEndCatchFunction = externalNativeRuntimeFunction(
             "__cxa_end_catch",
             returnType = LlvmRetType(voidType),
-            functionAttributes = listOf(LlvmFunctionAttribute.NoUnwind),
-            origin = context.standardLlvmSymbolsOrigin
-    ))
+            functionAttributes = listOf(LlvmFunctionAttribute.NoUnwind)
+    )
 
     private fun getSizeOfReturnTypeInBits(functionPointer: LLVMValueRef): Long {
         // LLVMGetElementType is called because we need to dereference a pointer to function.

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

@@ -12,12 +12,17 @@ import org.jetbrains.kotlin.konan.library.KonanLibrary
 import org.jetbrains.kotlin.library.metadata.CompiledKlibModuleOrigin
 import org.jetbrains.kotlin.library.metadata.SyntheticModulesOrigin
 import org.jetbrains.kotlin.library.metadata.klibModuleOrigin
+import org.jetbrains.kotlin.library.metadata.CompiledKlibFileOrigin
+import org.jetbrains.kotlin.library.KotlinLibrary
 import org.jetbrains.kotlin.resolve.descriptorUtil.module
 
 internal interface LlvmImports {
-    fun add(origin: CompiledKlibModuleOrigin, onlyBitcode: Boolean = false)
+    data class LibraryFile(val library: KotlinLibrary, val fqName: String, val filePath: String)
+
+    fun add(origin: CompiledKlibFileOrigin, onlyBitcode: Boolean = false)
     fun bitcodeIsUsed(library: KonanLibrary): Boolean
     fun nativeDependenciesAreUsed(library: KonanLibrary): Boolean
+    fun usedBitcode(): List<LibraryFile>
 }
 
 internal val DeclarationDescriptor.llvmSymbolOrigin: CompiledKlibModuleOrigin

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

@@ -16,7 +16,6 @@ import org.jetbrains.kotlin.ir.declarations.IrFunction
 import org.jetbrains.kotlin.ir.expressions.*
 import org.jetbrains.kotlin.ir.symbols.IrConstructorSymbol
 import org.jetbrains.kotlin.ir.types.getClass
-import org.jetbrains.kotlin.ir.util.dump
 import org.jetbrains.kotlin.ir.util.findAnnotation
 
 internal enum class IntrinsicType {
@@ -440,21 +439,18 @@ internal class IntrinsicGenerator(private val environment: IntrinsicGeneratorEnv
         val functionReturnType = LlvmRetType(llvm.int8PtrType)
         val functionParameterTypes = listOf(LlvmParamType(llvm.int8PtrType), LlvmParamType(llvm.int8PtrType))
 
-        val libobjc = context.standardLlvmSymbolsOrigin
-        val normalMessenger = codegen.llvm.externalFunction(LlvmFunctionProto(
+        val normalMessenger = codegen.llvm.externalNativeRuntimeFunction(
                 "objc_msgSend$messengerNameSuffix",
                 functionReturnType,
                 functionParameterTypes,
-                isVararg = true,
-                origin = libobjc
-        ))
-        val superMessenger = codegen.llvm.externalFunction(LlvmFunctionProto(
+                isVararg = true
+        )
+        val superMessenger = codegen.llvm.externalNativeRuntimeFunction(
                 "objc_msgSendSuper$messengerNameSuffix",
                 functionReturnType,
                 functionParameterTypes,
-                isVararg = true,
-                origin = libobjc
-        ))
+                isVararg = true
+        )
 
         val superClass = args.single()
         val messenger = LLVMBuildSelect(builder,

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

@@ -22,6 +22,7 @@ import org.jetbrains.kotlin.backend.konan.lower.DECLARATION_ORIGIN_STATIC_STANDA
 import org.jetbrains.kotlin.backend.konan.lower.DECLARATION_ORIGIN_STATIC_THREAD_LOCAL_INITIALIZER
 import org.jetbrains.kotlin.builtins.UnsignedType
 import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.library.metadata.CompiledKlibFileOrigin
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.IrStatement
 import org.jetbrains.kotlin.ir.UNDEFINED_OFFSET
@@ -1627,21 +1628,18 @@ internal class CodeGeneratorVisitor(val generationState: NativeGenerationState,
         } else {
             // e.g. ObjCObject, ObjCObjectBase etc.
             if (dstClass.isObjCMetaClass()) {
-                val isClassProto = LlvmFunctionProto(
+                val isClass = llvm.externalNativeRuntimeFunction(
                         "object_isClass",
                         LlvmRetType(llvm.int8Type),
-                        listOf(LlvmParamType(llvm.int8PtrType)),
-                        origin = context.standardLlvmSymbolsOrigin
+                        listOf(LlvmParamType(llvm.int8PtrType))
                 )
-                val isClass = llvm.externalFunction(isClassProto)
                 call(isClass, listOf(objCObject)).let {
                     functionGenerationContext.icmpNe(it, llvm.int8(0))
                 }
             } else if (dstClass.isObjCProtocolClass()) {
                 // Note: it is not clear whether this class should be looked up this way.
                 // clang does the same, however swiftc uses dynamic lookup.
-                val protocolClass =
-                        functionGenerationContext.getObjCClass("Protocol", context.standardLlvmSymbolsOrigin)
+                val protocolClass = functionGenerationContext.getObjCClass("Protocol", CompiledKlibFileOrigin.StdlibRuntime)
                 call(
                         llvm.Kotlin_Interop_IsObjectKindOfClass,
                         listOf(objCObject, protocolClass)
@@ -2496,7 +2494,7 @@ internal class CodeGeneratorVisitor(val generationState: NativeGenerationState,
         val protocolGetterProto = LlvmFunctionProto(
                 protocolGetterName,
                 LlvmRetType(llvm.int8PtrType),
-                origin = irClass.llvmSymbolOrigin,
+                origin = generationState.computeOrigin(irClass),
                 independent = true // Protocol is header-only declaration.
         )
         val protocolGetter = llvm.externalFunction(protocolGetterProto)
@@ -2679,7 +2677,7 @@ internal class CodeGeneratorVisitor(val generationState: NativeGenerationState,
         if (generationState.llvmModuleSpecification.importsKotlinDeclarationsFromOtherSharedLibraries()) {
             // When some dynamic caches are used, we consider that stdlib is in the dynamic cache as well.
             // Runtime is linked into stdlib module only, so import runtime global from it.
-            val global = codegen.importGlobal(name, value.llvmType, context.standardLlvmSymbolsOrigin)
+            val global = codegen.importNativeRuntimeGlobal(name, value.llvmType)
             val initializer = generateFunctionNoRuntime(codegen, functionType(llvm.voidType, false), "") {
                 store(value.llvm, global)
                 ret(null)
@@ -2689,7 +2687,7 @@ internal class CodeGeneratorVisitor(val generationState: NativeGenerationState,
 
             llvm.otherStaticInitializers += initializer
         } else {
-            generationState.llvmImports.add(context.standardLlvmSymbolsOrigin)
+            generationState.llvmImports.add(CompiledKlibFileOrigin.StdlibRuntime)
             // Define a strong runtime global. It'll overrule a weak global defined in a statically linked runtime.
             val global = llvm.staticData.placeGlobal(name, value, true)
 
@@ -2759,11 +2757,9 @@ internal class CodeGeneratorVisitor(val generationState: NativeGenerationState,
     //-------------------------------------------------------------------------//
     fun appendStaticInitializers() {
         // Note: the list of libraries is topologically sorted (in order for initializers to be called correctly).
-        val libraries = (llvm.allBitcodeDependencies + listOf(null)/* Null for "current" non-library module */)
+        val dependencies = (llvm.allBitcodeDependencies + listOf(null)/* Null for "current" non-library module */)
 
-        val libraryToInitializers = libraries.associateWith {
-            mutableListOf<LLVMValueRef>()
-        }
+        val libraryToInitializers = dependencies.associate { it?.library to mutableListOf<LLVMValueRef>() }
 
         llvm.irStaticInitializers.forEach {
             val library = it.konanLibrary
@@ -2783,7 +2779,8 @@ internal class CodeGeneratorVisitor(val generationState: NativeGenerationState,
                         kVoidFuncType
                 ).also { LLVMSetLinkage(it, LLVMLinkage.LLVMExternalLinkage) }
 
-        val ctorFunctions = libraries.flatMap { library ->
+        val ctorFunctions = dependencies.flatMap { dependency ->
+            val library = dependency?.library
             val initializers = libraryToInitializers.getValue(library)
 
             val ctorName = when {
@@ -2811,12 +2808,16 @@ internal class CodeGeneratorVisitor(val generationState: NativeGenerationState,
                 val cache = context.config.cachedLibraries.getLibraryCache(library)
                         ?: error("Library $library is expected to be cached")
 
-                when (cache.granularity) {
-                    CachedLibraries.Granularity.MODULE -> listOf(addCtorFunction(ctorName))
-                    CachedLibraries.Granularity.FILE -> {
-                        context.irLinker.klibToModuleDeserializerMap[library]!!.sortedFileIds.map {
-                            addCtorFunction(fileCtorName(library.uniqueName, it))
+                when (cache) {
+                    is CachedLibraries.Cache.Monolithic -> listOf(addCtorFunction(ctorName))
+                    is CachedLibraries.Cache.PerFile -> {
+                        val files = when (dependency) {
+                            is Llvm.CachedBitcodeDependency.WholeModule ->
+                                context.irLinker.klibToModuleDeserializerMap[library]!!.sortedFileIds
+                            is Llvm.CachedBitcodeDependency.CertainFiles ->
+                                dependency.files
                         }
+                        files.map { addCtorFunction(fileCtorName(library.uniqueName, it)) }
                     }
                 }
             }

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

@@ -28,11 +28,11 @@ internal class KotlinObjCClassInfoGenerator(override val generationState: Native
         val classMethods = companionObject?.generateMethodDescs().orEmpty()
 
         val superclassName = irClass.getSuperClassNotAny()!!.let {
-            llvm.imports.add(it.llvmSymbolOrigin)
+            llvm.imports.add(generationState.computeOrigin(it))
             it.descriptor.getExternalObjCClassBinaryName()
         }
         val protocolNames = irClass.getSuperInterfaces().map {
-            llvm.imports.add(it.llvmSymbolOrigin)
+            llvm.imports.add(generationState.computeOrigin(it))
             it.name.asString().removeSuffix("Protocol")
         }
 
@@ -161,7 +161,7 @@ internal fun CodeGenerator.kotlinObjCClassInfo(irClass: IrClass): LLVMValueRef {
         importGlobal(
                 irClass.kotlinObjCClassInfoSymbolName,
                 runtime.kotlinObjCClassInfo,
-                origin = irClass.llvmSymbolOrigin
+                generationState.computeOrigin(irClass)
         )
     } else {
         llvmDeclarations.forClass(irClass).objCDeclarations!!.classInfoGlobal.llvmGlobal

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

@@ -104,9 +104,8 @@ internal class KotlinStaticData(override val generationState: NativeGenerationSt
             UniqueKind.EMPTY_ARRAY -> context.ir.symbols.array.owner
         }
         return if (isExternal(descriptor)) {
-            constPointer(importGlobal(
-                    kind.llvmName, runtime.objHeaderType, origin = descriptor.llvmSymbolOrigin
-            ))
+            constPointer(
+                    importGlobal(kind.llvmName, runtime.objHeaderType, generationState.computeOrigin(descriptor)))
         } else {
             generationState.llvmDeclarations.forUnique(kind).pointer
         }

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

@@ -12,13 +12,14 @@ import llvm.*
 import org.jetbrains.kotlin.backend.konan.Context
 import org.jetbrains.kotlin.backend.konan.RuntimeNames
 import org.jetbrains.kotlin.backend.konan.ir.llvmSymbolOrigin
+import org.jetbrains.kotlin.library.metadata.CompiledKlibFileOrigin
+import org.jetbrains.kotlin.library.metadata.CompiledKlibModuleOrigin
 import org.jetbrains.kotlin.ir.declarations.IrConstructor
 import org.jetbrains.kotlin.ir.declarations.IrFunction
 import org.jetbrains.kotlin.ir.types.isNothing
 import org.jetbrains.kotlin.ir.util.hasAnnotation
 import org.jetbrains.kotlin.ir.util.isSuspend
 import org.jetbrains.kotlin.ir.util.isThrowable
-import org.jetbrains.kotlin.library.metadata.CompiledKlibModuleOrigin
 
 /**
  * Add attributes to LLVM function declaration and its invocation.
@@ -156,14 +157,14 @@ internal class LlvmFunctionProto(
         returnType: LlvmRetType,
         parameterTypes: List<LlvmParamType> = emptyList(),
         functionAttributes: List<LlvmFunctionAttribute> = emptyList(),
-        val origin: CompiledKlibModuleOrigin,
+        val origin: CompiledKlibFileOrigin,
         isVararg: Boolean = false,
         val independent: Boolean = false,
 ) : LlvmFunctionSignature(returnType, parameterTypes, isVararg, functionAttributes) {
     constructor(
             name: String,
             signature: LlvmFunctionSignature,
-            origin: CompiledKlibModuleOrigin,
+            origin: CompiledKlibFileOrigin,
             independent: Boolean = false,
     ) : this(name, signature.returnType, signature.parameterTypes, signature.functionAttributes, origin, signature.isVararg, independent)
 
@@ -172,7 +173,7 @@ internal class LlvmFunctionProto(
             returnType = contextUtils.getLlvmFunctionReturnType(irFunction),
             parameterTypes = contextUtils.getLlvmFunctionParameterTypes(irFunction),
             functionAttributes = inferFunctionAttributes(contextUtils, irFunction),
-            origin = irFunction.llvmSymbolOrigin,
+            origin = contextUtils.generationState.computeOrigin(irFunction),
             independent = irFunction.hasAnnotation(RuntimeNames.independent)
     )
 }

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

@@ -7,7 +7,7 @@ package org.jetbrains.kotlin.backend.konan.llvm
 
 import kotlinx.cinterop.*
 import llvm.*
-import org.jetbrains.kotlin.library.metadata.CompiledKlibModuleOrigin
+import org.jetbrains.kotlin.library.metadata.CompiledKlibFileOrigin
 
 internal val LLVMValueRef.type: LLVMTypeRef
     get() = LLVMTypeOf(this)!!
@@ -170,19 +170,25 @@ internal fun ContextUtils.addGlobal(name: String, type: LLVMTypeRef, isExported:
     return LLVMAddGlobal(llvm.module, type, name)!!
 }
 
-internal fun ContextUtils.importGlobal(name: String, type: LLVMTypeRef, origin: CompiledKlibModuleOrigin): LLVMValueRef {
-    llvm.imports.add(origin)
-
+private fun ContextUtils.importGlobal(name: String, type: LLVMTypeRef): LLVMValueRef {
     val found = LLVMGetNamedGlobal(llvm.module, name)
-    return if (found != null) {
-        assert (getGlobalType(found) == type)
-        assert (LLVMGetInitializer(found) == null) { "$name is already declared in the current module" }
-        found
-    } else {
+    return if (found == null)
         addGlobal(name, type, isExported = false)
+    else {
+        require(getGlobalType(found) == type)
+        require(LLVMGetInitializer(found) == null) { "$name is already declared in the current module" }
+        found
     }
 }
 
+internal fun ContextUtils.importGlobal(name: String, type: LLVMTypeRef, origin: CompiledKlibFileOrigin) =
+        importGlobal(name, type).also { llvm.imports.add(origin) }
+
+internal fun ContextUtils.importObjCGlobal(name: String, type: LLVMTypeRef) = importGlobal(name, type)
+
+internal fun ContextUtils.importNativeRuntimeGlobal(name: String, type: LLVMTypeRef) =
+        importGlobal(name, type, CompiledKlibFileOrigin.StdlibRuntime)
+
 internal abstract class AddressAccess {
     abstract fun getAddress(generationContext: FunctionGenerationContext?): LLVMValueRef
 }

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

@@ -16,7 +16,6 @@ import org.jetbrains.kotlin.builtins.PrimitiveType
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.types.*
 import org.jetbrains.kotlin.ir.util.*
-import org.jetbrains.kotlin.name.FqName
 
 internal class RTTIGenerator(override val generationState: NativeGenerationState) : ContextUtils {
 
@@ -147,10 +146,8 @@ internal class RTTIGenerator(override val generationState: NativeGenerationState
         staticData.kotlinStringLiteral(string)
     }
 
-    private val EXPORT_TYPE_INFO_FQ_NAME = FqName.fromSegments(listOf("kotlin", "native", "internal", "ExportTypeInfo"))
-
     private fun exportTypeInfoIfRequired(irClass: IrClass, typeInfoGlobal: LLVMValueRef?) {
-        val annotation = irClass.annotations.findAnnotation(EXPORT_TYPE_INFO_FQ_NAME)
+        val annotation = irClass.annotations.findAnnotation(RuntimeNames.exportTypeInfoAnnotation)
         if (annotation != null) {
             val name = annotation.getAnnotationStringValue()!!
             // TODO: use LLVMAddAlias.

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/objc/ObjCCodeGenerator.kt

@@ -28,48 +28,40 @@ internal open class ObjCCodeGenerator(val codegen: CodeGenerator) {
     }
 
     private val objcMsgSend = constPointer(
-            llvm.externalFunction(LlvmFunctionProto(
+            llvm.externalNativeRuntimeFunction(
                     "objc_msgSend",
                     LlvmRetType(llvm.int8PtrType),
                     listOf(LlvmParamType(llvm.int8PtrType), LlvmParamType(llvm.int8PtrType)),
-                    isVararg = true,
-                    origin = context.stdlibModule.llvmSymbolOrigin
-            )).llvmValue
+                    isVararg = true
+            ).llvmValue
     )
 
-    val objcRelease = run {
-        val proto = LlvmFunctionProto(
-                "llvm.objc.release",
-                LlvmRetType(llvm.voidType),
-                listOf(LlvmParamType(llvm.int8PtrType)),
-                listOf(LlvmFunctionAttribute.NoUnwind),
-                origin = context.stdlibModule.llvmSymbolOrigin
-        )
-        llvm.externalFunction(proto)
-    }
+    val objcRelease = llvm.externalNativeRuntimeFunction(
+            "llvm.objc.release",
+            LlvmRetType(llvm.voidType),
+            listOf(LlvmParamType(llvm.int8PtrType)),
+            listOf(LlvmFunctionAttribute.NoUnwind)
+    )
 
-    val objcAlloc = llvm.externalFunction(LlvmFunctionProto(
+    val objcAlloc = llvm.externalNativeRuntimeFunction(
             "objc_alloc",
             LlvmRetType(llvm.int8PtrType),
-            listOf(LlvmParamType(llvm.int8PtrType)),
-            origin = context.stdlibModule.llvmSymbolOrigin
-    ))
+            listOf(LlvmParamType(llvm.int8PtrType))
+    )
 
-    val objcAutoreleaseReturnValue = llvm.externalFunction(LlvmFunctionProto(
+    val objcAutoreleaseReturnValue = llvm.externalNativeRuntimeFunction(
             "llvm.objc.autoreleaseReturnValue",
             LlvmRetType(llvm.int8PtrType),
             listOf(LlvmParamType(llvm.int8PtrType)),
-            listOf(LlvmFunctionAttribute.NoUnwind),
-            origin = context.stdlibModule.llvmSymbolOrigin
-    ))
+            listOf(LlvmFunctionAttribute.NoUnwind)
+    )
 
-    val objcRetainAutoreleasedReturnValue = llvm.externalFunction(LlvmFunctionProto(
+    val objcRetainAutoreleasedReturnValue = llvm.externalNativeRuntimeFunction(
             "llvm.objc.retainAutoreleasedReturnValue",
             LlvmRetType(llvm.int8PtrType),
             listOf(LlvmParamType(llvm.int8PtrType)),
-            listOf(LlvmFunctionAttribute.NoUnwind),
-            origin = context.stdlibModule.llvmSymbolOrigin
-    ))
+            listOf(LlvmFunctionAttribute.NoUnwind)
+    )
 
     val objcRetainAutoreleasedReturnValueMarker: LLVMValueRef? by lazy {
         // See emitAutoreleasedReturnValueMarker in Clang.

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/objc/ObjCDataGenerator.kt

@@ -7,7 +7,6 @@ package org.jetbrains.kotlin.backend.konan.llvm.objc
 
 import llvm.*
 import org.jetbrains.kotlin.backend.konan.llvm.*
-import org.jetbrains.kotlin.library.metadata.CurrentKlibModuleOrigin
 
 /**
  * This class provides methods to generate Objective-C RTTI and other data.
@@ -75,18 +74,14 @@ internal class ObjCDataGenerator(val codegen: CodeGenerator) {
         val globalName = prefix + name
 
         // TODO: refactor usages and use [Global] class.
-        val llvmGlobal = LLVMGetNamedGlobal(llvm.module, globalName) ?:
-                codegen.importGlobal(globalName, classObjectType, CurrentKlibModuleOrigin)
+        val llvmGlobal = LLVMGetNamedGlobal(llvm.module, globalName)
+                ?: codegen.importObjCGlobal(globalName, classObjectType)
 
         return constPointer(llvmGlobal)
     }
 
     private val emptyCache = constPointer(
-            codegen.importGlobal(
-                    "_objc_empty_cache",
-                    codegen.runtime.objCCache,
-                    CurrentKlibModuleOrigin
-            )
+            codegen.importObjCGlobal("_objc_empty_cache", codegen.runtime.objCCache)
     )
 
     fun emitEmptyClass(name: String, superName: String) {

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/objcexport/BlockPointerSupport.kt

@@ -13,7 +13,6 @@ import org.jetbrains.kotlin.backend.konan.llvm.*
 import org.jetbrains.kotlin.backend.konan.objcexport.BlockPointerBridge
 import org.jetbrains.kotlin.ir.declarations.IrSimpleFunction
 import org.jetbrains.kotlin.ir.util.simpleFunctions
-import org.jetbrains.kotlin.library.metadata.CurrentKlibModuleOrigin
 import org.jetbrains.kotlin.util.OperatorNameConventions
 
 internal fun ObjCExportCodeGeneratorBase.generateBlockToKotlinFunctionConverter(
@@ -315,11 +314,7 @@ internal class BlockGenerator(private val codegen: CodeGenerator) {
                 ret(llvm.kNullInt8Ptr)
             }
 
-            val isa = codegen.importGlobal(
-                    "_NSConcreteStackBlock",
-                    llvm.int8PtrType,
-                    CurrentKlibModuleOrigin
-            )
+            val isa = codegen.importObjCGlobal("_NSConcreteStackBlock", llvm.int8PtrType)
 
             val flags = llvm.int32((1 shl 25) or (1 shl 30) or (1 shl 31))
             val reserved = llvm.int32(0)
@@ -350,12 +345,8 @@ internal class BlockGenerator(private val codegen: CodeGenerator) {
 }
 
 private val ObjCExportCodeGeneratorBase.retainBlock: LlvmCallable
-    get() {
-        val functionProto = LlvmFunctionProto(
-                "objc_retainBlock",
-                LlvmRetType(llvm.int8PtrType),
-                listOf(LlvmParamType(llvm.int8PtrType)),
-                origin = CurrentKlibModuleOrigin
-        )
-        return llvm.externalFunction(functionProto)
-    }
+    get() = llvm.externalNativeRuntimeFunction(
+            "objc_retainBlock",
+            LlvmRetType(llvm.int8PtrType),
+            listOf(LlvmParamType(llvm.int8PtrType))
+    )

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/objcexport/ObjCExportCodeGenerator.kt

@@ -16,7 +16,6 @@ import org.jetbrains.kotlin.backend.konan.descriptors.allOverriddenFunctions
 import org.jetbrains.kotlin.backend.konan.descriptors.isAbstract
 import org.jetbrains.kotlin.backend.konan.ir.KonanSymbols
 import org.jetbrains.kotlin.backend.konan.ir.isUnit
-import org.jetbrains.kotlin.backend.konan.ir.llvmSymbolOrigin
 import org.jetbrains.kotlin.backend.konan.ir.superClasses
 import org.jetbrains.kotlin.backend.konan.llvm.*
 import org.jetbrains.kotlin.backend.konan.llvm.objc.ObjCCodeGenerator
@@ -26,6 +25,7 @@ import org.jetbrains.kotlin.backend.konan.objcexport.*
 import org.jetbrains.kotlin.backend.konan.serialization.resolveFakeOverrideMaybeAbstract
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.library.metadata.CompiledKlibFileOrigin
 import org.jetbrains.kotlin.incremental.components.NoLookupLocation
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.expressions.IrClassReference
@@ -40,8 +40,6 @@ import org.jetbrains.kotlin.ir.types.isUnit
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.konan.target.AppleConfigurables
 import org.jetbrains.kotlin.konan.target.LinkerOutputKind
-import org.jetbrains.kotlin.library.metadata.CompiledKlibModuleOrigin
-import org.jetbrains.kotlin.library.metadata.CurrentKlibModuleOrigin
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.psi2ir.descriptors.IrBuiltInsOverDescriptors
 import org.jetbrains.kotlin.utils.DFS
@@ -223,15 +221,6 @@ internal open class ObjCExportCodeGeneratorBase(codegen: CodeGenerator) : ObjCCo
 
     val rttiGenerator = RTTIGenerator(generationState)
 
-    private val objcTerminate: LlvmCallable by lazy {
-        llvm.externalFunction(LlvmFunctionProto(
-                "objc_terminate",
-                LlvmRetType(llvm.voidType),
-                functionAttributes = listOf(LlvmFunctionAttribute.NoUnwind),
-                origin = CurrentKlibModuleOrigin
-        ))
-    }
-
     fun dispose() {
         rttiGenerator.dispose()
     }
@@ -478,7 +467,7 @@ internal class ObjCExportCodeGenerator(
         replaceExternalWeakOrCommonGlobal(
                 "Kotlin_ObjCInterop_uniquePrefix",
                 codegen.staticData.cStringLiteral(namer.topLevelNamePrefix),
-                context.standardLlvmSymbolsOrigin
+                CompiledKlibFileOrigin.StdlibRuntime
         )
 
         emitSelectorsHolder()
@@ -524,7 +513,7 @@ internal class ObjCExportCodeGenerator(
                 val sortedAdaptersPointer = staticData.placeGlobalConstArray("", type, sortedAdapters)
 
                 // Note: this globals replace runtime globals with weak linkage:
-                val origin = context.standardLlvmSymbolsOrigin
+                val origin = CompiledKlibFileOrigin.StdlibRuntime
                 replaceExternalWeakOrCommonGlobal(prefix, sortedAdaptersPointer, origin)
                 replaceExternalWeakOrCommonGlobal("${prefix}Num", llvm.constInt32(sortedAdapters.size), origin)
             }
@@ -535,9 +524,9 @@ internal class ObjCExportCodeGenerator(
 
         if (generationState.llvmModuleSpecification.importsKotlinDeclarationsFromOtherSharedLibraries()) {
             replaceExternalWeakOrCommonGlobal(
-                "Kotlin_ObjCExport_initTypeAdapters",
-                llvm.constInt1(true),
-                context.standardLlvmSymbolsOrigin
+                    "Kotlin_ObjCExport_initTypeAdapters",
+                    llvm.constInt1(true),
+                    CompiledKlibFileOrigin.StdlibRuntime
             )
         }
     }
@@ -704,7 +693,7 @@ internal class ObjCExportCodeGenerator(
 private fun ObjCExportCodeGenerator.replaceExternalWeakOrCommonGlobal(
         name: String,
         value: ConstValue,
-        origin: CompiledKlibModuleOrigin
+        origin: CompiledKlibFileOrigin
 ) {
     // TODO: A similar mechanism is used in `IrToBitcode.overrideRuntimeGlobal`. Consider merging them.
     if (generationState.llvmModuleSpecification.importsKotlinDeclarationsFromOtherSharedLibraries()) {
@@ -742,7 +731,7 @@ private fun ObjCExportCodeGenerator.setObjCExportTypeInfo(
         replaceExternalWeakOrCommonGlobal(
                 irClass.writableTypeInfoSymbolName,
                 writableTypeInfoValue,
-                irClass.llvmSymbolOrigin
+                generationState.computeOrigin(irClass)
         )
     } else {
         setOwnWritableTypeInfo(irClass, writableTypeInfoValue)
@@ -924,11 +913,8 @@ private fun ObjCExportCodeGenerator.emitSpecialClassesConvertions() {
 
 private fun ObjCExportCodeGenerator.emitCollectionConverters() {
 
-    fun importConverter(name: String): ConstPointer = constPointer(llvm.externalFunction(LlvmFunctionProto(
-            name,
-            kotlinToObjCFunctionType,
-            origin = CurrentKlibModuleOrigin
-    )).llvmValue)
+    fun importConverter(name: String): ConstPointer =
+            constPointer(llvm.externalNativeRuntimeFunction(name, kotlinToObjCFunctionType).llvmValue)
 
     setObjCExportTypeInfo(
             symbols.list.owner,

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

@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.backend.konan.lower
 
 import org.jetbrains.kotlin.backend.konan.DECLARATION_ORIGIN_FUNCTION_CLASS
 import org.jetbrains.kotlin.backend.konan.NativeGenerationState
+import org.jetbrains.kotlin.backend.konan.KonanFqNames
 import org.jetbrains.kotlin.backend.konan.serialization.KonanIrLinker
 import org.jetbrains.kotlin.backend.konan.serialization.KonanManglerIr
 import org.jetbrains.kotlin.ir.IrElement
@@ -21,32 +22,49 @@ internal class CacheInfoBuilder(
         private val moduleDeserializer: KonanIrLinker.KonanPartialModuleDeserializer,
         private val irModule: IrModuleFragment
 ) {
-    fun build() = irModule.acceptChildrenVoid(object : IrElementVisitorVoid {
-        override fun visitElement(element: IrElement) {
-            element.acceptChildrenVoid(this)
-        }
+    fun build() = irModule.files.forEach { irFile ->
+        var hasEagerlyInitializedProperties = false
 
-        override fun visitClass(declaration: IrClass) {
-            declaration.acceptChildrenVoid(this)
-
-            if (!declaration.isInterface && !declaration.isLocal
-                    && declaration.isExported && declaration.origin != DECLARATION_ORIGIN_FUNCTION_CLASS
-            ) {
-                val declaredFields = generationState.context.getLayoutBuilder(declaration).getDeclaredFields()
-                generationState.classFields.add(moduleDeserializer.buildClassFields(declaration, declaredFields))
+        irFile.acceptChildrenVoid(object : IrElementVisitorVoid {
+            override fun visitElement(element: IrElement) {
+                element.acceptChildrenVoid(this)
             }
-        }
 
-        override fun visitFunction(declaration: IrFunction) {
-            // Don't need to visit the children here: classes would be all local and wouldn't be handled anyway,
-            // as for functions - both their callees will be handled and inline bodies will be built for the top function.
+            override fun visitClass(declaration: IrClass) {
+                declaration.acceptChildrenVoid(this)
 
-            if (!declaration.isFakeOverride && declaration.isInline && declaration.isExported) {
-                generationState.inlineFunctionBodies.add(moduleDeserializer.buildInlineFunctionReference(declaration))
-                trackCallees(declaration)
+                if (!declaration.isInterface && !declaration.isLocal
+                        && declaration.isExported && declaration.origin != DECLARATION_ORIGIN_FUNCTION_CLASS
+                ) {
+                    val declaredFields = generationState.context.getLayoutBuilder(declaration).getDeclaredFields()
+                    generationState.classFields.add(moduleDeserializer.buildClassFields(declaration, declaredFields))
+                }
             }
-        }
-    })
+
+            override fun visitFunction(declaration: IrFunction) {
+                // Don't need to visit the children here: classes would be all local and wouldn't be handled anyway,
+                // as for functions - both their callees will be handled and inline bodies will be built for the top function.
+
+                if (!declaration.isFakeOverride && declaration.isInline && declaration.isExported) {
+                    generationState.inlineFunctionBodies.add(moduleDeserializer.buildInlineFunctionReference(declaration))
+                    trackCallees(declaration)
+                }
+            }
+
+            override fun visitProperty(declaration: IrProperty) {
+                declaration.acceptChildrenVoid(this)
+
+                if (declaration.parent == irFile
+                        && declaration.hasAnnotation(KonanFqNames.eagerInitialization)
+                ) {
+                    hasEagerlyInitializedProperties = true
+                }
+            }
+        })
+
+        if (hasEagerlyInitializedProperties)
+            generationState.eagerInitializedFiles.add(moduleDeserializer.buildEagerInitializedFile(irFile))
+    }
 
     private val IrDeclaration.isExported
         get() = with(KonanManglerIr) { isExported(compatibleMode = moduleDeserializer.compatibilityMode.oldSignatures) }

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

@@ -51,6 +51,7 @@ internal class CachesAbiSupport(mapping: NativeMapping, private val irFactory: I
                 returnType = irClass.parentAsClass.defaultType
             }.apply {
                 parent = irClass.getPackageFragment()
+                attributeOwnerId = irClass // To be able to get the file.
 
                 addValueParameter {
                     name = Name.identifier("innerClass")
@@ -73,6 +74,7 @@ internal class CachesAbiSupport(mapping: NativeMapping, private val irFactory: I
                 returnType = actualField.type
             }.apply {
                 parent = irProperty.getPackageFragment()
+                attributeOwnerId = irProperty // To be able to get the file.
 
                 (owner as? IrClass)?.let {
                     addValueParameter {
@@ -150,6 +152,7 @@ internal class ImportCachesAbiTransformer(val generationState: NativeGenerationS
     private val cachesAbiSupport = generationState.context.cachesAbiSupport
     private val innerClassesSupport = generationState.context.innerClassesSupport
     private val llvmImports = generationState.llvmImports
+    private val irLinker = generationState.context.irLinker
 
     override fun lower(irFile: IrFile) {
         irFile.transformChildrenVoid(this)
@@ -168,7 +171,7 @@ internal class ImportCachesAbiTransformer(val generationState: NativeGenerationS
 
             irClass?.isInner == true && innerClassesSupport.getOuterThisField(irClass) == field -> {
                 val accessor = cachesAbiSupport.getOuterThisAccessor(irClass)
-                llvmImports.add(irClass.llvmSymbolOrigin)
+                llvmImports.add(generationState.computeOrigin(irClass))
                 return irCall(expression.startOffset, expression.endOffset, accessor, emptyList()).apply {
                     putValueArgument(0, expression.receiver)
                 }
@@ -176,7 +179,7 @@ internal class ImportCachesAbiTransformer(val generationState: NativeGenerationS
 
             property?.isLateinit == true -> {
                 val accessor = cachesAbiSupport.getLateinitPropertyAccessor(property)
-                llvmImports.add(property.llvmSymbolOrigin)
+                llvmImports.add(generationState.computeOrigin(property))
                 return irCall(expression.startOffset, expression.endOffset, accessor, emptyList()).apply {
                     if (irClass != null)
                         putValueArgument(0, expression.receiver)

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

@@ -543,7 +543,7 @@ private class InteropLoweringPart1(val generationState: NativeGenerationState) :
     ): IrExpression = generateWithStubs(call) {
         if (method.parent !is IrClass) {
             // Category-provided.
-            generationState.llvmImports.add(method.llvmSymbolOrigin)
+            generationState.llvmImports.add(generationState.computeOrigin(method))
         }
 
         this.generateObjCCall(
@@ -617,7 +617,7 @@ private class InteropLoweringPart1(val generationState: NativeGenerationState) :
             // handled in CodeGeneratorVisitor.callVirtual.
             val useKotlinDispatch = isInteropStubsFile &&
                     (builder.scope.scopeOwnerSymbol.owner as? IrAnnotationContainer)
-                            ?.hasAnnotation(FqName("kotlin.native.internal.ExportForCppRuntime")) == true
+                            ?.hasAnnotation(RuntimeNames.exportForCppRuntime) == true
 
             if (!useKotlinDispatch) {
                 val arguments = callee.valueParameters.map { expression.getValueArgument(it.index) }
@@ -1011,7 +1011,7 @@ private class InteropTransformer(
     private fun generateCCall(expression: IrCall): IrExpression {
         val function = expression.symbol.owner
 
-        generationState.llvmImports.add(function.llvmSymbolOrigin)
+        generationState.llvmImports.add(generationState.computeOrigin(function))
         val exceptionMode = ForeignExceptionMode.byValue(
                 function.konanLibrary?.manifestProperties?.getProperty(ForeignExceptionMode.manifestKey)
         )

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

@@ -23,14 +23,17 @@ import org.jetbrains.kotlin.backend.common.serialization.*
 import org.jetbrains.kotlin.backend.common.serialization.encodings.BinaryNameAndType
 import org.jetbrains.kotlin.backend.common.serialization.encodings.BinarySymbolData
 import org.jetbrains.kotlin.backend.common.serialization.encodings.FunctionFlags
+import org.jetbrains.kotlin.backend.common.serialization.isForwardDeclarationModule
 import org.jetbrains.kotlin.backend.common.serialization.linkerissues.UserVisibleIrModulesSupport
 import org.jetbrains.kotlin.backend.konan.*
+import org.jetbrains.kotlin.backend.konan.descriptors.*
 import org.jetbrains.kotlin.backend.konan.descriptors.ClassLayoutBuilder
 import org.jetbrains.kotlin.backend.konan.descriptors.findPackage
-import org.jetbrains.kotlin.backend.konan.descriptors.isInteropLibrary
 import org.jetbrains.kotlin.backend.konan.descriptors.toFieldInfo
 import org.jetbrains.kotlin.backend.konan.ir.interop.IrProviderForCEnumAndCStructStubs
 import org.jetbrains.kotlin.descriptors.*
+import org.jetbrains.kotlin.library.metadata.DeserializedKlibModuleOrigin
+import org.jetbrains.kotlin.library.metadata.klibModuleOrigin
 import org.jetbrains.kotlin.descriptors.konan.isNativeStdlib
 import org.jetbrains.kotlin.ir.IrBuiltIns
 import org.jetbrains.kotlin.ir.builders.TranslationPluginContext
@@ -47,8 +50,6 @@ import org.jetbrains.kotlin.ir.visitors.IrElementTransformer
 import org.jetbrains.kotlin.ir.visitors.IrElementVisitor
 import org.jetbrains.kotlin.library.KotlinAbiVersion
 import org.jetbrains.kotlin.library.KotlinLibrary
-import org.jetbrains.kotlin.library.metadata.DeserializedKlibModuleOrigin
-import org.jetbrains.kotlin.library.metadata.klibModuleOrigin
 import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
@@ -196,6 +197,27 @@ internal object ClassFieldsSerializer {
     }
 }
 
+class SerializedEagerInitializedFile(val file: Int)
+
+internal object EagerInitializedPropertySerializer {
+    fun serialize(properties: List<SerializedEagerInitializedFile>): ByteArray {
+        val size = properties.sumOf { Int.SIZE_BYTES }
+        val stream = ByteArrayStream(ByteArray(size))
+        properties.forEach {
+            stream.writeInt(it.file)
+        }
+        return stream.buf
+    }
+
+    fun deserializeTo(data: ByteArray, result: MutableList<SerializedEagerInitializedFile>) {
+        val stream = ByteArrayStream(data)
+        while (stream.hasData()) {
+            val file = stream.readInt()
+            result.add(SerializedEagerInitializedFile(file))
+        }
+    }
+}
+
 internal fun ProtoClass.findClass(irClass: IrClass, fileReader: IrLibraryFile, symbolDeserializer: IrSymbolDeserializer): ProtoClass {
     val signature = irClass.symbol.signature ?: error("No signature for ${irClass.render()}")
     var result: ProtoClass? = null
@@ -400,9 +422,7 @@ internal class KonanIrLinker(
         is IrExternalPackageFragment -> {
             val moduleDescriptor = packageFragment.packageFragmentDescriptor.containingDeclaration
             val moduleDeserializer = moduleDeserializers[moduleDescriptor] ?: error("No module deserializer for $moduleDescriptor")
-            val descriptor = declaration.descriptor
-            val idSig = moduleDeserializer.descriptorSignatures[descriptor] ?: error("No signature for $descriptor")
-            idSig.topLevelSignature().fileSignature()?.fileName ?: error("No file for $idSig")
+            moduleDeserializer.getFileNameOf(declaration)
         }
 
         else -> error("Unknown package fragment kind ${packageFragment::class.java}")
@@ -443,6 +463,33 @@ internal class KonanIrLinker(
     ) {
         override val moduleFragment: IrModuleFragment = KonanIrModuleFragmentImpl(moduleDescriptor, builtIns)
 
+        val files by lazy { fileDeserializationStates.map { it.file } }
+
+        private val fileToFileDeserializationState by lazy { fileDeserializationStates.associateBy { it.file } }
+
+        private val idSignatureToFile by lazy {
+            buildMap {
+                fileDeserializationStates.forEach { fileDeserializationState ->
+                    fileDeserializationState.fileDeserializer.reversedSignatureIndex.keys.forEach { idSig ->
+                        put(idSig, fileDeserializationState.file)
+                    }
+                }
+            }
+        }
+
+        fun getFileNameOf(declaration: IrDeclaration): String {
+            fun IrDeclaration.getSignature() = symbol.signature ?: descriptorSignatures[descriptor]
+
+            val idSig = declaration.getSignature()
+                    ?: (declaration.parent as? IrDeclaration)?.getSignature()
+                    ?: ((declaration as? IrAttributeContainer)?.attributeOwnerId as? IrDeclaration)?.getSignature()
+                    ?: error("Can't find signature of ${declaration.render()}")
+            val topLevelIdSig = idSig.topLevelSignature()
+            return topLevelIdSig.fileSignature()?.fileName
+                    ?: idSignatureToFile[topLevelIdSig]?.path
+                    ?: error("No file for $idSig")
+        }
+
         fun buildInlineFunctionReference(irFunction: IrFunction): SerializedInlineFunctionReference {
             val signature = irFunction.symbol.signature
                     ?: error("No signature for ${irFunction.render()}")
@@ -598,6 +645,12 @@ internal class KonanIrLinker(
                     })
         }
 
+        fun buildEagerInitializedFile(irFile: IrFile): SerializedEagerInitializedFile {
+            val fileDeserializationState = fileToFileDeserializationState[irFile]
+                    ?: error("No file deserializer for ${irFile.render()}")
+            return SerializedEagerInitializedFile(fileDeserializationState.fileIndex)
+        }
+
         private val descriptorByIdSignatureFinder = DescriptorByIdSignatureFinderImpl(
                 moduleDescriptor, KonanManglerDesc,
                 DescriptorByIdSignatureFinderImpl.LookupMode.MODULE_ONLY
@@ -807,6 +860,13 @@ internal class KonanIrLinker(
             }
         }
 
+        val eagerInitializedFiles by lazy {
+            val cache = cachedLibraries.getLibraryCache(klib)!! // ?: error("No cache for ${klib.libraryName}") // KT-54668
+            cache.serializedEagerInitializedFiles
+                    .map { fileDeserializationStates[it.file].file }
+                    .distinct()
+        }
+
         val sortedFileIds by lazy {
             fileDeserializationStates
                     .sortedBy { it.file.fileEntry.name }

kotlin-native/runtime/src/main/kotlin/kotlin/native/internal/Runtime.kt

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2010-2022 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 kotlin.native.internal
+
+//
+// NOTE: THIS FILE IS AUTO-GENERATED, DO NOT EDIT
+//
+// This is a special fictitious file, mirroring native runtime.
+// During cache building for stdlib, the compiler will link native runtime to the bitcode this file
+// will be compiled to. The bitcode dependencies of this file will be generated by the compiler,
+// containing all the files with either ExportTypeInfo or ExportForCppRuntime annotations.
+//