[K/N] Make AbstractSuspendFunctionsLowering independent of files order

When coroutine class is created, it's made child of SuspendFunction
class. Normally, SuspendFunction class can't be already lowered,
but if we are compiling stdlib it can happen. And if it is
bad fake overrides would be created before this commit.

Unfortunately, as problem can happen only during stdlib compilation,
no specific test can be added.

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/AbstractSuspendFunctionsLowering.kt

@@ -16,6 +16,7 @@ import org.jetbrains.kotlin.ir.expressions.*
 import org.jetbrains.kotlin.ir.expressions.impl.IrInstanceInitializerCallImpl
 import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
 import org.jetbrains.kotlin.ir.symbols.IrSimpleFunctionSymbol
+import org.jetbrains.kotlin.ir.symbols.IrSymbol
 import org.jetbrains.kotlin.ir.types.*
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.ir.visitors.*
@@ -311,7 +312,7 @@ abstract class AbstractSuspendFunctionsLowering<C : CommonBackendContext>(val co
             val invokeSuspendMethod = buildInvokeSuspendMethod(superInvokeSuspendFunction, coroutineClass)
 
             var coroutineFactoryConstructor: IrConstructor? = null
-            val createMethod: IrSimpleFunction?
+            val ignoredParentSymbols = mutableListOf<IrSymbol>()
             if (functionReference != null) {
                 // Suspend lambda - create factory methods.
                 coroutineFactoryConstructor = buildFactoryConstructor(boundFunctionParameters!!)
@@ -320,26 +321,29 @@ abstract class AbstractSuspendFunctionsLowering<C : CommonBackendContext>(val co
                     .atMostOne { it.name == CREATE_IDENTIFIER && it.valueParameters.size == unboundFunctionParameters!!.size + 1 }
                     ?.symbol
 
-                createMethod = buildCreateMethod(
+                val createMethod = buildCreateMethod(
                     unboundArgs = unboundFunctionParameters!!,
                     superFunctionSymbol = createFunctionSymbol,
                     coroutineConstructor = coroutineConstructor
                 )
 
-                val suspendInvokeFunction =
+                val transformedSuspendInvokeFunction = suspendFunctionClass!!.simpleFunctions().single { it.name == OperatorNameConventions.INVOKE }
-                    suspendFunctionClass!!.simpleFunctions().single { it.name == OperatorNameConventions.INVOKE }.let {
+                val originalSuspendInvokeFunction = context.mapping.functionWithContinuationsToSuspendFunctions[transformedSuspendInvokeFunction] ?: transformedSuspendInvokeFunction
-                        context.mapping.functionWithContinuationsToSuspendFunctions[it] ?: it
+
-                    }
+                ignoredParentSymbols.add(transformedSuspendInvokeFunction.symbol)
 
                 buildInvokeMethod(
-                    functionInvokeFunction = suspendInvokeFunction,
+                    functionInvokeFunction = originalSuspendInvokeFunction,
                     createFunction = createMethod,
                     stateMachineFunction = invokeSuspendMethod,
                 )
             }
 
             coroutineClass.superTypes += superTypes
-            coroutineClass.addFakeOverrides(context.typeSystem)
+            coroutineClass.addFakeOverrides(
+                context.typeSystem,
+                ignoredParentSymbols = ignoredParentSymbols
+            )
 
             initializeStateMachine(coroutineConstructors, coroutineClassThis)