[K/N][IR] Refactored inline function bodies resolving

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

@@ -14,6 +14,7 @@ import org.jetbrains.kotlin.backend.konan.ir.KonanIr
 import org.jetbrains.kotlin.backend.konan.llvm.*
 import org.jetbrains.kotlin.backend.konan.llvm.coverage.CoverageManager
 import org.jetbrains.kotlin.backend.konan.lower.BridgesSupport
+import org.jetbrains.kotlin.backend.konan.lower.InlineFunctionsSupport
 import org.jetbrains.kotlin.backend.konan.lower.InnerClassesSupport
 import org.jetbrains.kotlin.backend.konan.objcexport.ObjCExport
 import org.jetbrains.kotlin.backend.konan.optimizations.DevirtualizationAnalysis
@@ -51,15 +52,17 @@ import java.lang.System.out
 import kotlin.LazyThreadSafetyMode.PUBLICATION
 import kotlin.reflect.KProperty
 
+internal class InlineFunctionOriginInfo(val irFunction: IrFunction, val irFile: IrFile, val startOffset: Int, val endOffset: Int)
+
 internal class NativeMapping : DefaultMapping() {
     data class BridgeKey(val target: IrSimpleFunction, val bridgeDirections: BridgeDirections)
 
     val outerThisFields = DefaultDelegateFactory.newDeclarationToDeclarationMapping<IrClass, IrField>()
     val bridges = mutableMapOf<BridgeKey, IrSimpleFunction>()
+    val notLoweredInlineFunctions = mutableMapOf<IrFunctionSymbol, IrFunction>()
+    val loweredInlineFunctions = mutableMapOf<IrFunction, InlineFunctionOriginInfo>()
 }
 
-internal class InlineFunctionOriginInfo(val irFunction: IrFunction, val irFile: IrFile, val startOffset: Int, val endOffset: Int)
-
 /**
  * Offset for synthetic elements created by lowerings and not attributable to other places in the source code.
  */
@@ -69,14 +72,6 @@ internal class SpecialDeclarationsFactory(val context: Context) {
     private val internalLoweredEnums = mutableMapOf<IrClass, InternalLoweredEnum>()
     private val externalLoweredEnums = mutableMapOf<IrClass, ExternalLoweredEnum>()
 
-    private val notLoweredInlineFunctions = mutableMapOf<IrFunctionSymbol, IrFunction>()
-    val loweredInlineFunctions = mutableMapOf<IrFunction, InlineFunctionOriginInfo>()
-    fun getNonLoweredInlineFunction(function: IrFunction): IrFunction {
-        return notLoweredInlineFunctions.getOrPut(function.symbol) {
-            function.deepCopyWithVariables().also { it.patchDeclarationParents(function.parent) }
-        }
-    }
-
     fun getLoweredEnumOrNull(enumClass: IrClass): LoweredEnumAccess? {
         assert(enumClass.kind == ClassKind.ENUM_CLASS) { "Expected enum class but was: ${enumClass.descriptor}" }
         return if (!context.llvmModuleSpecification.containsDeclaration(enumClass)) {
@@ -148,6 +143,7 @@ internal class Context(config: KonanConfig) : KonanBackendContext(config) {
     val specialDeclarationsFactory = SpecialDeclarationsFactory(this)
     val innerClassesSupport by lazy { InnerClassesSupport(mapping, irFactory) }
     val bridgesSupport by lazy { BridgesSupport(mapping, irBuiltIns, irFactory) }
+    val inlineFunctionsSupport by lazy { InlineFunctionsSupport(mapping) }
 
     open class LazyMember<T>(val initializer: Context.() -> T) {
         operator fun getValue(thisRef: Context, property: KProperty<*>): T = thisRef.getValue(this)

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

@@ -167,7 +167,7 @@ internal val inlinePhase = makeKonanFileOpPhase(
 
                 override fun visitFunction(declaration: IrFunction) {
                     if (declaration.isInline)
-                        context.specialDeclarationsFactory.getNonLoweredInlineFunction(declaration)
+                        context.inlineFunctionsSupport.getNonLoweredInlineFunction(declaration)
                     declaration.acceptChildrenVoid(this)
                 }
             })

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

@@ -1947,7 +1947,7 @@ internal class CodeGeneratorVisitor(val context: Context, val lifetimes: Map<IrE
     //-------------------------------------------------------------------------//
     private inner class ReturnableBlockScope(val returnableBlock: IrReturnableBlock, val resultSlot: LLVMValueRef?) :
             FileScope(returnableBlock.inlineFunctionSymbol?.owner?.let {
-                context.specialDeclarationsFactory.loweredInlineFunctions[it]?.irFile ?: it.fileOrNull
+                context.mapping.loweredInlineFunctions[it]?.irFile ?: it.fileOrNull
             }
                     ?: (currentCodeContext.fileScope() as? FileScope)?.file
                     ?: error("returnable block should belong to current file at least")) {
@@ -1956,13 +1956,13 @@ internal class CodeGeneratorVisitor(val context: Context, val lifetimes: Map<IrE
         var resultPhi : LLVMValueRef? = null
         private val functionScope by lazy {
             returnableBlock.inlineFunctionSymbol?.owner?.let {
-                it.scope(file().fileEntry.line(context.specialDeclarationsFactory.loweredInlineFunctions[it]?.startOffset ?: it.startOffset))
+                it.scope(file().fileEntry.line(context.mapping.loweredInlineFunctions[it]?.startOffset ?: it.startOffset))
             }
         }
 
         private fun getExit(): LLVMBasicBlockRef {
             val location = returnableBlock.inlineFunctionSymbol?.owner?.let {
-                location(context.specialDeclarationsFactory.loweredInlineFunctions[it]?.endOffset ?: it.endOffset)
+                location(context.mapping.loweredInlineFunctions[it]?.endOffset ?: it.endOffset)
             } ?: returnableBlock.statements.lastOrNull()?.let {
                 location(it.endOffset)
             }

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

@@ -10,25 +10,34 @@ import org.jetbrains.kotlin.backend.common.lower.*
 import org.jetbrains.kotlin.backend.common.lower.inline.*
 import org.jetbrains.kotlin.backend.konan.Context
 import org.jetbrains.kotlin.backend.konan.InlineFunctionOriginInfo
+import org.jetbrains.kotlin.backend.konan.NativeMapping
 import org.jetbrains.kotlin.ir.declarations.IrExternalPackageFragment
 import org.jetbrains.kotlin.ir.declarations.IrFile
 import org.jetbrains.kotlin.ir.declarations.IrFunction
+import org.jetbrains.kotlin.ir.deepCopyWithVariables
 import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
 import org.jetbrains.kotlin.ir.symbols.IrFunctionSymbol
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.name.Name
 
+internal class InlineFunctionsSupport(mapping: NativeMapping) {
+    private val notLoweredInlineFunctions = mapping.notLoweredInlineFunctions
+    fun getNonLoweredInlineFunction(function: IrFunction) = notLoweredInlineFunctions.getOrPut(function.symbol) {
+        function.deepCopyWithVariables().also { it.patchDeclarationParents(function.parent) }
+    }
+}
+
 // TODO: This is a bit hacky. Think about adopting persistent IR ideas.
 internal class NativeInlineFunctionResolver(override val context: Context) : DefaultInlineFunctionResolver(context) {
     override fun getFunctionDeclaration(symbol: IrFunctionSymbol): IrFunction {
         val function = super.getFunctionDeclaration(symbol)
 
-        context.specialDeclarationsFactory.loweredInlineFunctions[function]?.let { return it.irFunction }
+        context.mapping.loweredInlineFunctions[function]?.let { return it.irFunction }
 
         val packageFragment = function.getPackageFragment()
         val notLoweredFunction = if (packageFragment !is IrExternalPackageFragment) {
-            context.specialDeclarationsFactory.getNonLoweredInlineFunction(function).also {
-                context.specialDeclarationsFactory.loweredInlineFunctions[function] =
+            context.inlineFunctionsSupport.getNonLoweredInlineFunction(function).also {
+                context.mapping.loweredInlineFunctions[function] =
                         InlineFunctionOriginInfo(it, packageFragment as IrFile, function.startOffset, function.endOffset)
             }
         } else {
@@ -39,13 +48,13 @@ internal class NativeInlineFunctionResolver(override val context: Context) : Def
             require(context.config.cachedLibraries.isLibraryCached(moduleDeserializer.klib)) {
                 "No IR and no cache for ${function.render()}"
             }
-            context.specialDeclarationsFactory.loweredInlineFunctions[function] = moduleDeserializer.deserializeInlineFunction(function)
+            context.mapping.loweredInlineFunctions[function] = moduleDeserializer.deserializeInlineFunction(function)
             function
         }
 
         val body = notLoweredFunction.body ?: return notLoweredFunction
 
-        PreInlineLowering(context).lower(body, notLoweredFunction, context.specialDeclarationsFactory.loweredInlineFunctions[function]!!.irFile)
+        PreInlineLowering(context).lower(body, notLoweredFunction, context.mapping.loweredInlineFunctions[function]!!.irFile)
 
         ArrayConstructorLowering(context).lower(body, notLoweredFunction)