[Interop] Support cache generation for CEnums

Force IR generation for all CEnums in case of cache generation

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

@@ -7,6 +7,7 @@ import org.jetbrains.kotlin.backend.common.phaser.*
 import org.jetbrains.kotlin.backend.common.serialization.DescriptorTable
 import org.jetbrains.kotlin.backend.common.serialization.metadata.KlibMetadataMonolithicSerializer
 import org.jetbrains.kotlin.backend.konan.descriptors.isForwardDeclarationModule
+import org.jetbrains.kotlin.backend.konan.descriptors.isFromInteropLibrary
 import org.jetbrains.kotlin.backend.konan.descriptors.konanLibrary
 import org.jetbrains.kotlin.backend.konan.ir.interop.IrProviderForInteropStubs
 import org.jetbrains.kotlin.backend.konan.ir.KonanSymbols
@@ -231,6 +232,9 @@ internal val psiToIrPhase = konanUnitPhase(
             if (this.stdlibModule in modulesWithoutDCE) {
                 functionIrClassFactory.buildAllClasses()
             }
+            modulesWithoutDCE
+                    .filter(ModuleDescriptor::isFromInteropLibrary)
+                    .forEach(irProviderForCEnums::buildAllEnumsFrom)
 
             irModule = module
             irModules = deserializer.modules.filterValues { llvmModuleSpecification.containsModule(it) }

backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ir/interop/IrProviderForCEnumStubs.kt

@@ -6,6 +6,7 @@ package org.jetbrains.kotlin.backend.konan.ir.interop
 
 import org.jetbrains.kotlin.backend.konan.InteropBuiltIns
 import org.jetbrains.kotlin.backend.konan.descriptors.findPackage
+import org.jetbrains.kotlin.backend.konan.descriptors.getPackageFragments
 import org.jetbrains.kotlin.backend.konan.descriptors.isFromInteropLibrary
 import org.jetbrains.kotlin.backend.konan.ir.KonanSymbols
 import org.jetbrains.kotlin.backend.konan.ir.interop.cenum.CEnumByValueFunctionGenerator
@@ -13,6 +14,7 @@ import org.jetbrains.kotlin.backend.konan.ir.interop.cenum.CEnumClassGenerator
 import org.jetbrains.kotlin.backend.konan.ir.interop.cenum.CEnumCompanionGenerator
 import org.jetbrains.kotlin.backend.konan.ir.interop.cenum.CEnumVarClassGenerator
 import org.jetbrains.kotlin.descriptors.ClassDescriptor
+import org.jetbrains.kotlin.descriptors.ModuleDescriptor
 import org.jetbrains.kotlin.descriptors.PackageFragmentDescriptor
 import org.jetbrains.kotlin.ir.declarations.IrDeclaration
 import org.jetbrains.kotlin.ir.declarations.IrDeclarationContainer
@@ -23,6 +25,7 @@ import org.jetbrains.kotlin.ir.symbols.*
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.psi2ir.generators.GeneratorContext
 import org.jetbrains.kotlin.resolve.descriptorUtil.module
+import org.jetbrains.kotlin.resolve.scopes.DescriptorKindFilter
 
 /**
  * For the most of descriptors that come from metadata-based interop libraries
@@ -70,6 +73,14 @@ internal class IrProviderForCEnumStubs(
         return symbol.findCEnumDescriptor(interopBuiltIns) != null
     }
 
+    fun buildAllEnumsFrom(interopModule: ModuleDescriptor) {
+        interopModule.getPackageFragments()
+                .flatMap { it.getMemberScope().getContributedDescriptors(DescriptorKindFilter.CLASSIFIERS) }
+                .filterIsInstance<ClassDescriptor>()
+                .filter { it.implementsCEnum(interopBuiltIns) }
+                .forEach { cEnumClassGenerator.findOrGenerateCEnum(it, irParentFor(it)) }
+    }
+
     override fun getDeclaration(symbol: IrSymbol): IrDeclaration? {
         if (symbol.isBound) return symbol.owner as IrDeclaration
         if (!canHandleSymbol(symbol)) return null