[K/N] Add LlvmIrHolder adapter interface for debugging purposes

Similar to KotlinBackendIrHolder and BackendContextHolder interfaces.

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

@@ -8,6 +8,7 @@ package org.jetbrains.kotlin.backend.konan
 import llvm.*
 import org.jetbrains.kotlin.backend.konan.driver.BasicPhaseContext
 import org.jetbrains.kotlin.backend.konan.driver.utilities.BackendContextHolder
+import org.jetbrains.kotlin.backend.konan.driver.utilities.LlvmIrHolder
 import org.jetbrains.kotlin.backend.konan.llvm.*
 import org.jetbrains.kotlin.backend.konan.llvm.coverage.CoverageManager
 import org.jetbrains.kotlin.backend.konan.objcexport.ObjCExport
@@ -44,7 +45,7 @@ internal class NativeGenerationState(
         //  It will reduce code coupling and make it easier to create NativeGenerationState instances.
         val context: Context,
         val cacheDeserializationStrategy: CacheDeserializationStrategy?
-) : BasicPhaseContext(config), BackendContextHolder<Context> {
+) : BasicPhaseContext(config), BackendContextHolder<Context>, LlvmIrHolder {
     private val outputPath = config.cacheSupport.tryGetImplicitOutput(cacheDeserializationStrategy) ?: config.outputPath
     val outputFiles = OutputFiles(outputPath, config.target, config.produce)
     val tempFiles = run {
@@ -127,4 +128,7 @@ internal class NativeGenerationState(
 
     override val backendContext: Context
         get() = context
+
+    override val llvmModule: LLVMModuleRef
+        get() = llvm.module
 }

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

@@ -16,6 +16,7 @@ import org.jetbrains.kotlin.backend.konan.checkLlvmModuleExternalCalls
 import org.jetbrains.kotlin.backend.konan.createLTOFinalPipelineConfig
 import org.jetbrains.kotlin.backend.konan.driver.PhaseContext
 import org.jetbrains.kotlin.backend.konan.driver.PhaseEngine
+import org.jetbrains.kotlin.backend.konan.driver.utilities.LlvmIrHolder
 import org.jetbrains.kotlin.backend.konan.insertAliasToEntryPoint
 import org.jetbrains.kotlin.backend.konan.llvm.coverage.runCoveragePass
 import org.jetbrains.kotlin.backend.konan.llvm.verifyModule
@@ -31,9 +32,9 @@ private val nativeLLVMDumper =
 private val llvmPhaseActions: Set<Action<Unit, NativeGenerationState>> = setOf(nativeLLVMDumper)
 
 internal data class WriteBitcodeFileInput(
-        val llvmModule: LLVMModuleRef,
+        override val llvmModule: LLVMModuleRef,
         val outputFile: File,
-)
+) : LlvmIrHolder
 
 /**
  * Write in-memory LLVM module to filesystem as a bitcode.

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/driver/utilities/LlvmPassesUtilities.kt

@@ -0,0 +1,17 @@
+/*
+ * Copyright 2010-2023 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.backend.konan.driver.utilities
+
+import llvm.LLVMModuleRef
+import org.jetbrains.kotlin.backend.konan.driver.PhaseContext
+
+/**
+ * Implementation of this interface in phase context, input or output
+ * enables LLVM IR validation and dumping
+ */
+interface LlvmIrHolder {
+    val llvmModule: LLVMModuleRef
+}