[IR][JS] Partial linkage: Enable PL for IR IC compiler

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/ic/JsIrLinkerLoader.kt

@@ -22,6 +22,7 @@ import org.jetbrains.kotlin.ir.declarations.IrModuleFragment
 import org.jetbrains.kotlin.ir.util.ExternalDependenciesGenerator
 import org.jetbrains.kotlin.ir.util.SymbolTable
 import org.jetbrains.kotlin.ir.util.irMessageLogger
+import org.jetbrains.kotlin.js.config.JSConfigurationKeys
 import org.jetbrains.kotlin.library.KotlinLibrary
 import org.jetbrains.kotlin.library.unresolvedDependencies
 import org.jetbrains.kotlin.psi2ir.descriptors.IrBuiltInsOverDescriptors
@@ -49,7 +50,8 @@ internal class JsIrLinkerLoader(
         val moduleDescriptor = loadedModules.keys.last()
         val typeTranslator = TypeTranslatorImpl(symbolTable, compilerConfiguration.languageVersionSettings, moduleDescriptor)
         val irBuiltIns = IrBuiltInsOverDescriptors(moduleDescriptor.builtIns, typeTranslator, symbolTable)
-        return JsIrLinker(null, compilerConfiguration.irMessageLogger, irBuiltIns, symbolTable, partialLinkageEnabled = false, null)
+        val partialLinkageEnabled = compilerConfiguration[JSConfigurationKeys.PARTIAL_LINKAGE] ?: false
+        return JsIrLinker(null, compilerConfiguration.irMessageLogger, irBuiltIns, symbolTable, partialLinkageEnabled, null)
     }
 
     private fun loadModules(): Map<ModuleDescriptor, KotlinLibrary> {

compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/klib.kt

@@ -171,7 +171,7 @@ fun generateIrForKlibSerialization(
         messageLogger,
         psi2IrContext.irBuiltIns,
         psi2IrContext.symbolTable,
-        partialLinkageEnabled = false,
+        partialLinkageEnabled = partialLinkageEnabled,
         feContext,
         ICData(serializedIrFiles, errorPolicy.allowErrors),
         stubGenerator = stubGenerator