[K/N] Add trivial test for llvm.objc.clang.arc.use lowering

kotlin-native/build-tools/src/main/kotlin/org/jetbrains/kotlin/ExecLlvm.kt

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2010-2021 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
+
+import groovy.lang.Closure
+import org.gradle.api.Action
+import org.gradle.api.Project
+import org.gradle.process.ExecResult
+import org.gradle.process.ExecSpec
+import org.gradle.util.ConfigureUtil
+import org.jetbrains.kotlin.konan.util.DependencyProcessor
+
+fun execLlvmUtility(project: Project, utility: String, action: Action<in ExecSpec>): ExecResult {
+    val llvmBinDirectory = "${project.platformManager.hostPlatform.absoluteLlvmHome}/bin"
+    return project.exec(Action<ExecSpec> {
+        action.execute(this)
+        executable = "$llvmBinDirectory/$utility"
+    })
+}
+
+fun execLlvmUtility(project: Project, utility: String, closure: Closure<in ExecSpec>): ExecResult {
+    return execLlvmUtility(project, utility, ConfigureUtil.configureUsing(closure))
+}