[K/N] Split 1-stage K1 compilations to two stages

^KT-59245 Fixed

kotlin-native/backend.native/cli.bc/src/org/jetbrains/kotlin/cli/bc/K2Native.kt

@@ -67,7 +67,6 @@ class K2Native : CLICompiler<K2NativeCompilerArguments>() {
             messageCollector.report(ERROR, "You have not specified any compilation arguments. No output has been produced.")
         }
         if (configuration.get(KonanConfigKeys.PRODUCE) != CompilerOutputKind.LIBRARY &&
-                configuration.getBoolean(CommonConfigurationKeys.USE_FIR) &&
                 configuration.kotlinSourceRoots.isNotEmpty()) {
             // K2/Native backend cannot produce binary directly from FIR frontend output, since descriptors, deserialized from KLib, are needed
             // So, such compilation is split to two stages:

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

@@ -10,13 +10,12 @@ import org.jetbrains.kotlin.backend.konan.*
 import org.jetbrains.kotlin.backend.konan.TopDownAnalyzerFacadeForKonan
 import org.jetbrains.kotlin.backend.konan.driver.BasicPhaseContext
 import org.jetbrains.kotlin.backend.konan.driver.PhaseContext
-import org.jetbrains.kotlin.backend.konan.driver.PhaseEngine
 import org.jetbrains.kotlin.cli.common.CLIConfigurationKeys
 import org.jetbrains.kotlin.cli.common.messages.AnalyzerWithCompilerReport
 import org.jetbrains.kotlin.cli.jvm.compiler.KotlinCoreEnvironment
-import org.jetbrains.kotlin.config.CommonConfigurationKeys
 import org.jetbrains.kotlin.config.languageVersionSettings
 import org.jetbrains.kotlin.descriptors.ModuleDescriptor
+import org.jetbrains.kotlin.konan.target.CompilerOutputKind
 import org.jetbrains.kotlin.resolve.BindingContext
 import org.jetbrains.kotlin.util.capitalizeDecapitalize.toLowerCaseAsciiOnly
 
@@ -56,13 +55,10 @@ internal val FrontendPhase = createSimpleNamedCompilerPhase(
 
         val sourceFiles = input.getSourceFiles()
 
-        if (sourceFiles.isNotEmpty()) {
-            require (!input.configuration.getBoolean(CommonConfigurationKeys.USE_FIR)) {
-                "Internal error: For K2 compiler, no source files should have been passed here. " +
-                "K2Native.doExecute() must transform such compilation into two-stage compilation.\n"
-            }
-        } else {
-            // TODO: we shouldn't be here in this case.
+        require(context.config.produce == CompilerOutputKind.LIBRARY || sourceFiles.isEmpty()) {
+            "Internal error: no source files should have been passed here (${sourceFiles.first().virtualFilePath} in particular)\n" +
+            "to produce binary (e.g. a ${context.config.produce.name.toLowerCaseAsciiOnly()})\n" +
+            "K2Native.doExecute() must transform such compilation into two-stage compilation. Please report this here: https://kotl.in/issue"
         }
 
         // Build AST and binding info.

native/native.tests/tests/org/jetbrains/kotlin/konan/blackboxtest/support/group/ExtTestCaseGroupProvider.kt

@@ -146,7 +146,6 @@ private class ExtTestDataFile(
                 && structure.directives[API_VERSION_DIRECTIVE] !in INCOMPATIBLE_API_VERSIONS
                 && structure.directives[LANGUAGE_VERSION_DIRECTIVE] !in INCOMPATIBLE_LANGUAGE_VERSIONS
                 && !(testDataFileSettings.languageSettings.contains("+${LanguageFeature.MultiPlatformProjects.name}")
-                     && pipelineType == PipelineType.K2
                      && testMode == TestMode.ONE_STAGE_MULTI_MODULE)
 
     private fun isIgnoredTarget(pipelineType: PipelineType, testDataFile: File, backend: TargetBackend): Boolean {