test 2

Otherwise, the function will return Unit instead of correct value.
 #KT-46007 Fixed

.bunch

@@ -1,7 +1,4 @@
-201
 202
-203_202
-193
-as40_193
-as41
-as42_as41
+201
+as41_201
+as42

.gitignore

@@ -59,3 +59,6 @@ node_modules/
 .rpt2_cache/
 libraries/tools/kotlin-test-js-runner/lib/
 local.properties
+buildSrcTmp/
+distTmp/
+outTmp/

.idea/codeStyles/Project.xml

@@ -101,4 +101,4 @@
       <option name="ALIGN_MULTILINE_PARAMETERS_IN_CALLS" value="true" />
     </codeStyleSettings>
   </code_scheme>
-</component>
+</component>

.idea/dictionaries/dmitriy_dolovov.xml

@@ -10,6 +10,7 @@
       <w>commonizers</w>
       <w>commonizes</w>
       <w>commonizing</w>
+      <w>interop</w>
       <w>jetbrains</w>
       <w>konan</w>
       <w>kotlinx</w>

.idea/dictionaries/svyatoslav_kuzmich.xml

@@ -0,0 +1,27 @@
+<component name="ProjectDictionaryState">
+  <dictionary name="svyatoslav.kuzmich">
+    <words>
+      <w>anyfunc</w>
+      <w>copysign</w>
+      <w>eqref</w>
+      <w>exnref</w>
+      <w>externref</w>
+      <w>funcref</w>
+      <w>jetbrains</w>
+      <w>kotlinx</w>
+      <w>ktor</w>
+      <w>optref</w>
+      <w>popcnt</w>
+      <w>rotl</w>
+      <w>rotr</w>
+      <w>simd</w>
+      <w>sqrt</w>
+      <w>testsuite</w>
+      <w>uninstantiable</w>
+      <w>unlinkable</w>
+      <w>vtable</w>
+      <w>wabt</w>
+      <w>xopt</w>
+    </words>
+  </dictionary>
+</component>

.idea/dictionaries/yan.xml

@@ -10,7 +10,10 @@
       <w>kapt</w>
       <w>kotlinc</w>
       <w>mutators</w>
+      <w>parcelable</w>
       <w>parceler</w>
+      <w>parcelers</w>
+      <w>parcelize</w>
       <w>repl</w>
       <w>testdata</w>
       <w>uast</w>

.idea/inspectionProfiles/idea_default.xml

@@ -453,4 +453,4 @@
       <option name="ignoreNonEmtpyLoops" value="false" />
     </inspection_tool>
   </profile>
-</component>
+</component>

.idea/runConfigurations/Generate_Compiler_Tests.xml

@@ -10,7 +10,7 @@
       </option>
       <option name="taskNames">
         <list>
-          <option value=":compiler:generateTests" />
+          <option value=":compiler:tests-for-compiler-generator:generateTests" />
           <option value=":compiler:tests-java8:generateTests" />
           <option value=":compiler:tests-against-klib:generateTests" />
           <option value=":js:js.tests:generateTests" />
@@ -22,4 +22,4 @@
     <extension name="coverage" enabled="false" merge="false" sample_coverage="true" runner="idea" />
     <method />
   </configuration>
-</component>
+</component>

ReadMe.md

@@ -2,10 +2,14 @@
 [![TeamCity (simple build status)](https://img.shields.io/teamcity/http/teamcity.jetbrains.com/s/Kotlin_KotlinPublic_Compiler.svg)](https://teamcity.jetbrains.com/buildConfiguration/Kotlin_KotlinPublic_Compiler?branch=%3Cdefault%3E&buildTypeTab=overview&mode=builds)
 [![Maven Central](https://img.shields.io/maven-central/v/org.jetbrains.kotlin/kotlin-maven-plugin.svg)](https://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.jetbrains.kotlin%22)
 [![GitHub license](https://img.shields.io/badge/license-Apache%20License%202.0-blue.svg?style=flat)](https://www.apache.org/licenses/LICENSE-2.0)
+[![Revved up by Gradle Enterprise](https://img.shields.io/badge/Revved%20up%20by-Gradle%20Enterprise-06A0CE?logo=Gradle&labelColor=02303A)](https://ge.jetbrains.com/scans?search.rootProjectNames=Kotlin)
 
-# Kotlin Programming Language
+# Kotlin Programming Language!!!
 
-Welcome to [Kotlin](https://kotlinlang.org/)! Some handy links:
+Welcome to [Kotlin](https://kotlinlang.org/)!   
+It is an open-source, statically typed programming language supported and developed by [JetBrains](https://www.jetbrains.com/) and open-source contributors.
+
+Some handy links:
 
  * [Kotlin Site](https://kotlinlang.org/)
  * [Getting Started Guide](https://kotlinlang.org/docs/tutorials/getting-started.html)
@@ -14,10 +18,21 @@ Welcome to [Kotlin](https://kotlinlang.org/)! Some handy links:
  * [Issue Tracker](https://youtrack.jetbrains.com/issues/KT)
  * [Forum](https://discuss.kotlinlang.org/)
  * [Kotlin Blog](https://blog.jetbrains.com/kotlin/)
+ * [Subscribe to Kotlin YouTube channel](https://www.youtube.com/channel/UCP7uiEZIqci43m22KDl0sNw)
  * [Follow Kotlin on Twitter](https://twitter.com/kotlin)
  * [Public Slack channel](https://slack.kotlinlang.org/)
  * [TeamCity CI build](https://teamcity.jetbrains.com/project.html?tab=projectOverview&projectId=Kotlin)
 
+## Kotlin Multiplatform capabilities
+
+Support for multiplatform programming is one of Kotlin’s key benefits. It reduces time spent writing and maintaining the same code for [different platforms](https://kotlinlang.org/docs/reference/mpp-supported-platforms.html) while retaining the flexibility and benefits of native programming.
+
+ * [Kotlin Multiplatform Mobile](https://kotlinlang.org/lp/mobile/) for sharing code between Android and iOS
+ * [Getting Started with Kotlin Multiplatform Mobile Guide](https://kotlinlang.org/docs/mobile/create-first-app.html)
+ * [Kotlin Multiplatform Benefits](https://kotlinlang.org/docs/reference/multiplatform.html)
+ * [Share code on all platforms](https://kotlinlang.org/docs/reference/mpp-share-on-platforms.html#share-code-on-all-platforms)
+ * [Share code on similar platforms](https://kotlinlang.org/docs/reference/mpp-share-on-platforms.html#share-code-on-similar-platforms)
+
 ## Editing Kotlin
 
  * [Kotlin IntelliJ IDEA Plugin](https://kotlinlang.org/docs/tutorials/getting-started.html)
@@ -153,6 +168,28 @@ includeBuild('/path/to/kotlin') {
 }
 ```
 
+### Dependency verification
+
+We have a [dependencies verification](https://docs.gradle.org/current/userguide/dependency_verification.html) feature enabled in the
+repository for all Gradle builds. Gradle will check hashes (md5 and sha256) of used dependencies and will fail builds with
+`Dependency verification failed` errors when local artifacts are absent or have different hashes listed in the
+[verification-metadata.xml](https://github.com/JetBrains/kotlin/blob/master/gradle/verification-metadata.xml) file.
+
+It's expected that `verification-metadata.xml` should only be updated with the commits that modify the build. There are some tips how
+to perform such updates:
+
+- Use auto-generation for getting an initial list of new hashes (verify updates relate to you changes).
+
+`./gradlew -M sha256,md5 help`
+
+*(any other task may be used instead of `help`)*
+
+- Consider removing old versions from the file if you are updating dependencies.
+- Leave meaningful `origin` attribute (instead of `Generated by Gradle`) if you did some manual verification of the artifact.
+- Always do manual verification if several hashes are needed and a new `also-trust` tag has to be added.
+- If you’re adding a dependency with OS mentioning in an artifact name (`darwin`, `mac`, `osx`, `linux`, `windows`), remember to add 
+  counterparts for other platforms.
+
 # License
 Kotlin is distributed under the terms of the Apache License (Version 2.0). See [license folder](license/README.md) for details.
 

ant/src/org/jetbrains/kotlin/ant/Kotlin2JvmTask.kt

@@ -16,18 +16,24 @@
 
 package org.jetbrains.kotlin.ant
 
-import org.apache.tools.ant.types.Path
-import org.apache.tools.ant.types.Reference
+import org.apache.tools.ant.BuildException
+import org.apache.tools.ant.taskdefs.Execute
+import org.apache.tools.ant.taskdefs.Redirector
+import org.apache.tools.ant.types.*
 import java.io.File.pathSeparator
+import java.io.File.separator
 
 class Kotlin2JvmTask : KotlinCompilerBaseTask() {
     override val compilerFqName = "org.jetbrains.kotlin.cli.jvm.K2JVMCompiler"
 
-    var includeRuntime: Boolean = true
+    var includeRuntime: Boolean = false
     var moduleName: String? = null
 
     var noReflect: Boolean = false
 
+    private val cmdl = CommandlineJava()
+    var fork: Boolean = false
+
     private var compileClasspath: Path? = null
 
     fun setClasspath(classpath: Path) {
@@ -73,4 +79,47 @@ class Kotlin2JvmTask : KotlinCompilerBaseTask() {
         if (noReflect) args.add("-no-reflect")
         if (includeRuntime) args.add("-include-runtime")
     }
+
+    override fun execute() {
+        if (!fork)
+            super.execute()
+        else {
+            exec()
+        }
+    }
+
+    private fun exec() {
+        val javaHome = System.getProperty("java.home")
+        val javaBin = javaHome + separator + "bin" + separator + "java"
+        val redirector = Redirector(this)
+
+        fillArguments()
+
+        val command = ArrayList<String>()
+        command.add(javaBin)
+        command.addAll(cmdl.vmCommand.arguments) // jvm args
+        command.add("-Dorg.jetbrains.kotlin.cliMessageRenderer=FullPath") // same MessageRenderer as non-forking mode
+        command.add("-cp")
+        command.add(KotlinAntTaskUtil.compilerJar.canonicalPath)
+        command.add(compilerFqName)
+        command.addAll(args) // compiler args
+
+        // streamHandler: used to handle the input and output streams of the subprocess.
+        // watchdog: a watchdog for the subprocess or <code>null</code> to disable a timeout for the subprocess.
+        // TODO: support timeout for the subprocess
+        val exe = Execute(redirector.createHandler(), null)
+        exe.setAntRun(getProject())
+        exe.commandline = command.toTypedArray()
+        log("Executing command: ${command.joinToString(" ")}", LogLevel.DEBUG.level)
+        log("Compiling ${src!!.list().toList()} => [${output!!.canonicalPath}]")
+        val exitCode = exe.execute()
+        redirector.complete()
+        if (failOnError && exitCode != 0) {
+            throw BuildException("Compile failed; see the compiler error output for details.")
+        }
+    }
+
+    fun createJvmarg(): Commandline.Argument {
+        return cmdl.createVmArgument()
+    }
 }

ant/src/org/jetbrains/kotlin/ant/KotlinCompilerBaseTask.kt

@@ -80,7 +80,7 @@ abstract class KotlinCompilerBaseTask : Task() {
         fillSpecificArguments()
     }
 
-    final override fun execute() {
+    override fun execute() {
         fillArguments()
 
         val compilerClass = KotlinAntTaskUtil.getOrCreateClassLoader().loadClass(compilerFqName)

benchmarks/build.gradle.kts

@@ -1,36 +1,11 @@
 import kotlinx.benchmark.gradle.benchmark
 
-val benchmarks_version = "0.2.0-dev-7"
-buildscript {
-    val benchmarks_version = "0.2.0-dev-7"
-
-    repositories {
-        val cacheRedirectorEnabled = findProperty("cacheRedirectorEnabled")?.toString()?.toBoolean() == true
-        if (cacheRedirectorEnabled) {
-            maven("https://cache-redirector.jetbrains.com/dl.bintray.com/kotlin/kotlinx")
-        } else {
-            maven("https://dl.bintray.com/kotlin/kotlinx")
-        }
-    }
-    dependencies {
-        classpath("org.jetbrains.kotlinx:kotlinx.benchmark.gradle:$benchmarks_version")
-    }
-}
-
-apply(plugin = "kotlinx.benchmark")
+val benchmarks_version = "0.3.0"
 
 plugins {
     java
     kotlin("jvm")
-}
-
-repositories {
-    val cacheRedirectorEnabled = findProperty("cacheRedirectorEnabled")?.toString()?.toBoolean() == true
-    if (cacheRedirectorEnabled) {
-        maven("https://cache-redirector.jetbrains.com/dl.bintray.com/kotlin/kotlinx")
-   } else {
-        maven("https://dl.bintray.com/kotlin/kotlinx")
-    }
+    id("org.jetbrains.kotlinx.benchmark") version "0.3.0"
 }
 
 dependencies {
@@ -40,11 +15,9 @@ dependencies {
     compile(project(":compiler:cli"))
     compile(intellijCoreDep()) { includeJars("intellij-core") }
     compile(jpsStandalone()) { includeJars("jps-model") }
-    Platform[192].orHigher {
-        compile(intellijPluginDep("java"))
-    }
+    compile(intellijPluginDep("java"))
     compile(intellijDep()) { includeIntellijCoreJarDependencies(project) }
-    compile("org.jetbrains.kotlinx:kotlinx.benchmark.runtime-jvm:$benchmarks_version")
+    compile("org.jetbrains.kotlinx:kotlinx-benchmark-runtime:$benchmarks_version")
 }
 
 sourceSets {

benchmarks/src/org/jetbrains/kotlin/benchmarks/AbstractSimpleFileBenchmark.kt

@@ -152,7 +152,7 @@ abstract class AbstractSimpleFileBenchmark {
             .uniteWith(TopDownAnalyzerFacadeForJVM.AllJavaSourcesInProjectScope(env.project))
         val session = createSession(env, scope)
         val firProvider = session.firProvider as FirProviderImpl
-        val builder = RawFirBuilder(session, firProvider.kotlinScopeProvider, stubMode = false)
+        val builder = RawFirBuilder(session, firProvider.kotlinScopeProvider)
 
         val totalTransformer = FirTotalResolveProcessor(session)
         val firFile = builder.buildFirFile(file).also(firProvider::recordFile)

build-common/build.gradle.kts

@@ -7,6 +7,7 @@ plugins {
 
 dependencies {
     compileOnly(project(":core:util.runtime"))
+    compileOnly(project(":compiler:backend.common.jvm"))
     compileOnly(project(":compiler:util"))
     compileOnly(project(":compiler:cli-common"))
     compileOnly(project(":compiler:frontend.java"))

build-common/src/org/jetbrains/kotlin/build/BuildMetaInfo.kt

@@ -17,9 +17,6 @@ interface BuildMetaInfo {
     val compilerBuildVersion: String
     val languageVersionString: String
     val apiVersionString: String
-    val coroutinesEnable: Boolean
-    val coroutinesWarn: Boolean
-    val coroutinesError: Boolean
     val multiplatformEnable: Boolean
     val metadataVersionMajor: Int
     val metadataVersionMinor: Int
@@ -35,9 +32,6 @@ abstract class BuildMetaInfoFactory<T : BuildMetaInfo>(private val metaInfoClass
         compilerBuildVersion: String,
         languageVersionString: String,
         apiVersionString: String,
-        coroutinesEnable: Boolean,
-        coroutinesWarn: Boolean,
-        coroutinesError: Boolean,
         multiplatformEnable: Boolean,
         ownVersion: Int,
         coroutinesVersion: Int,
@@ -53,9 +47,6 @@ abstract class BuildMetaInfoFactory<T : BuildMetaInfo>(private val metaInfoClass
             compilerBuildVersion = KotlinCompilerVersion.VERSION,
             languageVersionString = languageVersion.versionString,
             apiVersionString = args.apiVersion ?: languageVersion.versionString,
-            coroutinesEnable = args.coroutinesState == CommonCompilerArguments.ENABLE,
-            coroutinesWarn = args.coroutinesState == CommonCompilerArguments.WARN,
-            coroutinesError = args.coroutinesState == CommonCompilerArguments.ERROR,
             multiplatformEnable = args.multiPlatform,
             ownVersion = OWN_VERSION,
             coroutinesVersion = COROUTINES_VERSION,

build-common/src/org/jetbrains/kotlin/build/CommonBuildMetaInfo.kt

@@ -15,9 +15,6 @@ data class CommonBuildMetaInfo(
     override val compilerBuildVersion: String,
     override val languageVersionString: String,
     override val apiVersionString: String,
-    override val coroutinesEnable: Boolean,
-    override val coroutinesWarn: Boolean,
-    override val coroutinesError: Boolean,
     override val multiplatformEnable: Boolean,
     override val metadataVersionMajor: Int,
     override val metadataVersionMinor: Int,
@@ -32,9 +29,6 @@ data class CommonBuildMetaInfo(
             compilerBuildVersion: String,
             languageVersionString: String,
             apiVersionString: String,
-            coroutinesEnable: Boolean,
-            coroutinesWarn: Boolean,
-            coroutinesError: Boolean,
             multiplatformEnable: Boolean,
             ownVersion: Int,
             coroutinesVersion: Int,
@@ -47,9 +41,6 @@ data class CommonBuildMetaInfo(
                 compilerBuildVersion = compilerBuildVersion,
                 languageVersionString = languageVersionString,
                 apiVersionString = apiVersionString,
-                coroutinesEnable = coroutinesEnable,
-                coroutinesWarn = coroutinesWarn,
-                coroutinesError = coroutinesError,
                 multiplatformEnable = multiplatformEnable,
                 metadataVersionMajor = metadataVersion.major,
                 metadataVersionMinor = metadataVersion.minor,

build-common/src/org/jetbrains/kotlin/build/ExecutionStrategy.kt

@@ -0,0 +1,12 @@
+/*
+ * Copyright 2010-2020 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.build
+
+import java.io.Serializable
+
+enum class ExecutionStrategy : Serializable {
+    DAEMON, IN_PROCESS, OUT_OF_PROCESS
+}

build-common/src/org/jetbrains/kotlin/build/JsBuildMetaInfo.kt

@@ -15,9 +15,6 @@ data class JsBuildMetaInfo(
     override val compilerBuildVersion: String,
     override val languageVersionString: String,
     override val apiVersionString: String,
-    override val coroutinesEnable: Boolean,
-    override val coroutinesWarn: Boolean,
-    override val coroutinesError: Boolean,
     override val multiplatformEnable: Boolean,
     override val metadataVersionMajor: Int,
     override val metadataVersionMinor: Int,
@@ -32,9 +29,6 @@ data class JsBuildMetaInfo(
             compilerBuildVersion: String,
             languageVersionString: String,
             apiVersionString: String,
-            coroutinesEnable: Boolean,
-            coroutinesWarn: Boolean,
-            coroutinesError: Boolean,
             multiplatformEnable: Boolean,
             ownVersion: Int,
             coroutinesVersion: Int,
@@ -47,9 +41,6 @@ data class JsBuildMetaInfo(
                 compilerBuildVersion = compilerBuildVersion,
                 languageVersionString = languageVersionString,
                 apiVersionString = apiVersionString,
-                coroutinesEnable = coroutinesEnable,
-                coroutinesWarn = coroutinesWarn,
-                coroutinesError = coroutinesError,
                 multiplatformEnable = multiplatformEnable,
                 metadataVersionMajor = metadataVersion.major,
                 metadataVersionMinor = metadataVersion.minor,

build-common/src/org/jetbrains/kotlin/build/JvmBuildMetaInfo.kt

@@ -16,7 +16,7 @@
 
 package org.jetbrains.kotlin.build
 
-import org.jetbrains.kotlin.metadata.jvm.deserialization.JvmBytecodeBinaryVersion
+import org.jetbrains.kotlin.load.kotlin.JvmBytecodeBinaryVersion
 import org.jetbrains.kotlin.metadata.jvm.deserialization.JvmMetadataVersion
 
 /**
@@ -27,9 +27,6 @@ data class JvmBuildMetaInfo(
     override val compilerBuildVersion: String,
     override val languageVersionString: String,
     override val apiVersionString: String,
-    override val coroutinesEnable: Boolean,
-    override val coroutinesWarn: Boolean,
-    override val coroutinesError: Boolean,
     override val multiplatformEnable: Boolean,
     override val metadataVersionMajor: Int,
     override val metadataVersionMinor: Int,
@@ -47,9 +44,6 @@ data class JvmBuildMetaInfo(
             compilerBuildVersion: String,
             languageVersionString: String,
             apiVersionString: String,
-            coroutinesEnable: Boolean,
-            coroutinesWarn: Boolean,
-            coroutinesError: Boolean,
             multiplatformEnable: Boolean,
             ownVersion: Int,
             coroutinesVersion: Int,
@@ -62,9 +56,6 @@ data class JvmBuildMetaInfo(
                 compilerBuildVersion = compilerBuildVersion,
                 languageVersionString = languageVersionString,
                 apiVersionString = apiVersionString,
-                coroutinesEnable = coroutinesEnable,
-                coroutinesWarn = coroutinesWarn,
-                coroutinesError = coroutinesError,
                 multiplatformEnable = multiplatformEnable,
                 metadataVersionMajor = metadataVersion.major,
                 metadataVersionMinor = metadataVersion.minor,

build-common/src/org/jetbrains/kotlin/build/report/BuildReporter.kt

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2010-2020 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.build.report
+
+import org.jetbrains.kotlin.build.report.metrics.BuildMetricsReporter
+import org.jetbrains.kotlin.build.report.metrics.RemoteBuildMetricsReporter
+
+open class BuildReporter(
+    protected open val icReporter: ICReporter,
+    protected open val buildMetricsReporter: BuildMetricsReporter
+) : ICReporter by icReporter, BuildMetricsReporter by buildMetricsReporter
+
+class RemoteBuildReporter(
+    override val icReporter: RemoteICReporter,
+    override val buildMetricsReporter: RemoteBuildMetricsReporter
+) : BuildReporter(icReporter, buildMetricsReporter), RemoteReporter {
+    override fun flush() {
+        icReporter.flush()
+        buildMetricsReporter.flush()
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/ICReporter.kt

@@ -3,7 +3,7 @@
  * 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.incremental
+package org.jetbrains.kotlin.build.report
 
 import org.jetbrains.kotlin.cli.common.ExitCode
 import java.io.File
@@ -17,3 +17,5 @@ interface ICReporter {
     fun reportMarkDirtyMember(affectedFiles: Iterable<File>, scope: String, name: String)
     fun reportMarkDirty(affectedFiles: Iterable<File>, reason: String)
 }
+
+

build-common/src/org/jetbrains/kotlin/build/report/ICReporterBase.kt

@@ -1,9 +1,9 @@
 /*
- * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2020 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.incremental
+package org.jetbrains.kotlin.build.report
 
 import java.io.File
 

build-common/src/org/jetbrains/kotlin/build/report/RemoteICReporter.kt

@@ -0,0 +1,9 @@
+/*
+ * Copyright 2010-2020 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.build.report
+
+interface RemoteICReporter : ICReporter,
+    RemoteReporter

build-common/src/org/jetbrains/kotlin/build/report/RemoteReporter.kt

@@ -0,0 +1,11 @@
+/*
+ * Copyright 2010-2020 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.build.report
+
+interface RemoteReporter {
+    fun flush()
+}
+

build-common/src/org/jetbrains/kotlin/build/report/metrics/BuildAttribute.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2010-2020 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.build.report.metrics
+
+import java.io.Serializable
+
+enum class BuildAttributeKind : Serializable {
+    REBUILD_REASON;
+
+    companion object {
+        const val serialVersionUID = 0L
+    }
+}
+
+enum class BuildAttribute(val kind: BuildAttributeKind) : Serializable {
+    NO_BUILD_HISTORY(BuildAttributeKind.REBUILD_REASON),
+    CACHE_CORRUPTION(BuildAttributeKind.REBUILD_REASON),
+    UNKNOWN_CHANGES_IN_GRADLE_INPUTS(BuildAttributeKind.REBUILD_REASON),
+    JAVA_CHANGE_UNTRACKED_FILE_IS_REMOVED(BuildAttributeKind.REBUILD_REASON),
+    JAVA_CHANGE_UNEXPECTED_PSI(BuildAttributeKind.REBUILD_REASON),
+    JAVA_CHANGE_UNKNOWN_QUALIFIER(BuildAttributeKind.REBUILD_REASON),
+    DEP_CHANGE_REMOVED_ENTRY(BuildAttributeKind.REBUILD_REASON),
+    DEP_CHANGE_HISTORY_IS_NOT_FOUND(BuildAttributeKind.REBUILD_REASON),
+    DEP_CHANGE_HISTORY_CANNOT_BE_READ(BuildAttributeKind.REBUILD_REASON),
+    DEP_CHANGE_HISTORY_NO_KNOWN_BUILDS(BuildAttributeKind.REBUILD_REASON),
+    DEP_CHANGE_NON_INCREMENTAL_BUILD_IN_DEP(BuildAttributeKind.REBUILD_REASON),
+    IN_PROCESS_EXECUTION(BuildAttributeKind.REBUILD_REASON),
+    OUT_OF_PROCESS_EXECUTION(BuildAttributeKind.REBUILD_REASON),
+    IC_IS_NOT_ENABLED(BuildAttributeKind.REBUILD_REASON);
+
+    companion object {
+        const val serialVersionUID = 0L
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/BuildAttributes.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2010-2020 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.build.report.metrics
+
+import java.io.Serializable
+import java.util.*
+
+class BuildAttributes : Serializable {
+    private val myAttributes =
+        EnumMap<BuildAttribute, Int>(
+            BuildAttribute::class.java
+        )
+
+    fun add(attr: BuildAttribute, count: Int = 1) {
+        myAttributes[attr] = myAttributes.getOrDefault(attr, 0) + count
+    }
+
+    fun addAll(other: BuildAttributes) {
+        other.myAttributes.forEach { (attr, n) -> add(attr, n) }
+    }
+
+    fun asMap(): Map<BuildAttribute, Int> = myAttributes
+
+    companion object {
+        const val serialVersionUID = 0L
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/BuildMetrics.kt

@@ -0,0 +1,22 @@
+/*
+ * Copyright 2010-2020 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.build.report.metrics
+
+import java.io.Serializable
+
+data class BuildMetrics(
+    val buildTimes: BuildTimes = BuildTimes(),
+    val buildAttributes: BuildAttributes = BuildAttributes()
+) : Serializable {
+    fun addAll(other: BuildMetrics) {
+        buildTimes.addAll(other.buildTimes)
+        buildAttributes.addAll(other.buildAttributes)
+    }
+
+    companion object {
+        const val serialVersionUID = 0L
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/BuildMetricsReporter.kt

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2010-2020 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.build.report.metrics
+
+interface BuildMetricsReporter {
+    fun startMeasure(metric: BuildTime, startNs: Long)
+    fun endMeasure(metric: BuildTime, endNs: Long)
+
+    fun addAttribute(attribute: BuildAttribute)
+
+    fun getMetrics(): BuildMetrics
+    fun addMetrics(metrics: BuildMetrics?)
+}
+
+inline fun <T> BuildMetricsReporter.measure(metric: BuildTime, fn: () -> T): T {
+    val start = System.nanoTime()
+    startMeasure(metric, start)
+
+    try {
+        return fn()
+    } finally {
+        val end = System.nanoTime()
+        endMeasure(metric, end)
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/BuildMetricsReporterImpl.kt

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2010-2020 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.build.report.metrics
+
+import java.util.*
+
+class BuildMetricsReporterImpl : BuildMetricsReporter {
+    private val myBuildTimeStartNs: EnumMap<BuildTime, Long> =
+        EnumMap(
+            BuildTime::class.java
+        )
+    private val myBuildTimes = BuildTimes()
+    private val myBuildAttributes = BuildAttributes()
+
+    override fun startMeasure(metric: BuildTime, startNs: Long) {
+        if (metric in myBuildTimeStartNs) {
+            error("$metric was restarted before it finished")
+        }
+        myBuildTimeStartNs[metric] = startNs
+    }
+
+    override fun endMeasure(metric: BuildTime, endNs: Long) {
+        val startNs = myBuildTimeStartNs.remove(metric) ?: error("$metric finished before it started")
+        val durationNs = endNs - startNs
+        myBuildTimes.add(metric, durationNs)
+    }
+
+    override fun addAttribute(attribute: BuildAttribute) {
+        myBuildAttributes.add(attribute)
+    }
+
+    override fun getMetrics(): BuildMetrics =
+        BuildMetrics(
+            buildTimes = myBuildTimes,
+            buildAttributes = myBuildAttributes
+        )
+
+    override fun addMetrics(metrics: BuildMetrics?) {
+        if (metrics == null) return
+
+        myBuildAttributes.addAll(metrics.buildAttributes)
+        myBuildTimes.addAll(metrics.buildTimes)
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/BuildTime.kt

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2010-2020 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.build.report.metrics
+
+import java.io.Serializable
+
+@Suppress("Reformat")
+enum class BuildTime(val parent: BuildTime? = null) : Serializable {
+    GRADLE_TASK,
+        CLEAR_OUTPUT(GRADLE_TASK),
+        BACKUP_OUTPUT(GRADLE_TASK),
+        RESTORE_OUTPUT_FROM_BACKUP(GRADLE_TASK),
+        CONNECT_TO_DAEMON(GRADLE_TASK),
+        CLEAR_JAR_CACHE(GRADLE_TASK),
+        RUN_COMPILER(GRADLE_TASK),
+            NON_INCREMENTAL_COMPILATION_IN_PROCESS(RUN_COMPILER),
+            NON_INCREMENTAL_COMPILATION_OUT_OF_PROCESS(RUN_COMPILER),
+            NON_INCREMENTAL_COMPILATION_DAEMON(RUN_COMPILER),
+            INCREMENTAL_COMPILATION(RUN_COMPILER),
+                IC_CALCULATE_INITIAL_DIRTY_SET(INCREMENTAL_COMPILATION),
+                    IC_ANALYZE_CHANGES_IN_DEPENDENCIES(IC_CALCULATE_INITIAL_DIRTY_SET),
+                        IC_FIND_HISTORY_FILES(IC_ANALYZE_CHANGES_IN_DEPENDENCIES),
+                        IC_ANALYZE_HISTORY_FILES(IC_ANALYZE_CHANGES_IN_DEPENDENCIES),
+                    IC_ANALYZE_CHANGES_IN_JAVA_SOURCES(IC_CALCULATE_INITIAL_DIRTY_SET),
+                    IC_ANALYZE_CHANGES_IN_ANDROID_LAYOUTS(IC_CALCULATE_INITIAL_DIRTY_SET),
+                    IC_DETECT_REMOVED_CLASSES(IC_CALCULATE_INITIAL_DIRTY_SET),
+                CLEAR_OUTPUT_ON_REBUILD(INCREMENTAL_COMPILATION),
+                IC_UPDATE_CACHES(INCREMENTAL_COMPILATION),
+                INCREMENTAL_ITERATION(INCREMENTAL_COMPILATION),
+                NON_INCREMENTAL_ITERATION(INCREMENTAL_COMPILATION),
+                IC_WRITE_HISTORY_FILE(INCREMENTAL_COMPILATION);
+
+    companion object {
+        const val serialVersionUID = 0L
+
+        val children by lazy {
+            values().filter { it.parent != null }.groupBy { it.parent }
+        }
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/BuildTimes.kt

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2010-2020 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.build.report.metrics
+
+import java.io.Serializable
+import java.util.*
+
+class BuildTimes : Serializable {
+    private val myBuildTimes = EnumMap<BuildTime, Long>(BuildTime::class.java)
+
+    fun addAll(other: BuildTimes) {
+        for ((bt, timeNs) in other.myBuildTimes) {
+            add(bt, timeNs)
+        }
+    }
+
+    fun add(buildTime: BuildTime, timeNs: Long) {
+        myBuildTimes[buildTime] = myBuildTimes.getOrDefault(buildTime, 0) + timeNs
+    }
+
+    fun asMap(): Map<BuildTime, Long> = myBuildTimes
+
+    companion object {
+        const val serialVersionUID = 0L
+    }
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/DoNothingBuildMetricsReporter.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2010-2020 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.build.report.metrics
+
+object DoNothingBuildMetricsReporter : BuildMetricsReporter {
+    override fun startMeasure(metric: BuildTime, startNs: Long) {
+    }
+
+    override fun endMeasure(metric: BuildTime, endNs: Long) {
+    }
+
+    override fun addAttribute(attribute: BuildAttribute) {
+    }
+
+    override fun getMetrics(): BuildMetrics =
+        BuildMetrics(
+            BuildTimes(),
+            BuildAttributes()
+        )
+
+    override fun addMetrics(metrics: BuildMetrics?) {}
+}

build-common/src/org/jetbrains/kotlin/build/report/metrics/RemoteBuildMetricsReporter.kt

@@ -0,0 +1,11 @@
+/*
+ * Copyright 2010-2020 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.build.report.metrics
+
+import org.jetbrains.kotlin.build.report.RemoteReporter
+
+interface RemoteBuildMetricsReporter : BuildMetricsReporter,
+    RemoteReporter

build-common/src/org/jetbrains/kotlin/compilerRunner/ArgumentUtils.java

@@ -29,21 +29,43 @@ import org.jetbrains.kotlin.cli.common.arguments.Argument;
 import org.jetbrains.kotlin.cli.common.arguments.CommonToolArguments;
 import org.jetbrains.kotlin.cli.common.arguments.InternalArgument;
 import org.jetbrains.kotlin.cli.common.arguments.ParseCommandLineArgumentsKt;
+import org.jetbrains.kotlin.idea.ExplicitDefaultSubstitutor;
+import org.jetbrains.kotlin.idea.ExplicitDefaultSubstitutorsKt;
 import org.jetbrains.kotlin.utils.StringsKt;
 
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Type;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-import java.util.Objects;
+import java.util.*;
 
 public class ArgumentUtils {
-    private ArgumentUtils() {}
+    private ArgumentUtils() {
+    }
 
     @NotNull
     public static List<String> convertArgumentsToStringList(@NotNull CommonToolArguments arguments)
             throws InstantiationException, IllegalAccessException, InvocationTargetException {
+        List<String> convertedArguments = convertArgumentsToStringListInternal(arguments);
+
+        Map<KClass<? extends CommonToolArguments>, Collection<ExplicitDefaultSubstitutor>> defaultSubstitutorsMap =
+                ExplicitDefaultSubstitutorsKt.getDefaultSubstitutors();
+        KClass<? extends CommonToolArguments> argumentsKClass = JvmClassMappingKt.getKotlinClass(arguments.getClass());
+        Collection<ExplicitDefaultSubstitutor> defaultSubstitutors = defaultSubstitutorsMap.get(argumentsKClass);
+        if (defaultSubstitutors != null) {
+            for (ExplicitDefaultSubstitutor substitutor : defaultSubstitutors) {
+                if (substitutor.isSubstitutable(convertedArguments)) convertedArguments.addAll(substitutor.getNewSubstitution());
+            }
+        }
+        return convertedArguments;
+    }
+
+    @NotNull
+    public static List<String> convertArgumentsToStringListNoDefaults(@NotNull CommonToolArguments arguments)
+            throws InstantiationException, IllegalAccessException, InvocationTargetException {
+        return convertArgumentsToStringListInternal(arguments);
+    }
+
+    private static List<String> convertArgumentsToStringListInternal(@NotNull CommonToolArguments arguments)
+            throws InstantiationException, IllegalAccessException, InvocationTargetException {
         List<String> result = new ArrayList<>();
         Class<? extends CommonToolArguments> argumentsClass = arguments.getClass();
         convertArgumentsToStringList(arguments, argumentsClass.newInstance(), JvmClassMappingKt.getKotlinClass(argumentsClass), result);

build-common/src/org/jetbrains/kotlin/idea/explicitDefaultSubstitutors.kt

@@ -0,0 +1,46 @@
+/*
+ * 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.idea
+
+import org.jetbrains.kotlin.cli.common.arguments.Argument
+import org.jetbrains.kotlin.cli.common.arguments.CommonToolArguments
+import org.jetbrains.kotlin.cli.common.arguments.K2JVMCompilerArguments
+import org.jetbrains.kotlin.config.JvmTarget
+import kotlin.reflect.KClass
+import kotlin.reflect.KProperty1
+import kotlin.reflect.full.findAnnotation
+
+val defaultSubstitutors: Map<KClass<out CommonToolArguments>, Collection<ExplicitDefaultSubstitutor>> =
+    mapOf(K2JVMCompilerArguments::class to listOf(JvmTargetDefaultSubstitutor))
+
+sealed class ExplicitDefaultSubstitutor {
+    abstract val substitutedProperty: KProperty1<out CommonToolArguments, String?>
+    abstract val oldSubstitution: List<String>
+    abstract val newSubstitution: List<String>
+    abstract fun isSubstitutable(args: List<String>): Boolean
+
+    protected val argument: Argument by lazy {
+        substitutedProperty.findAnnotation() ?: error("Property \"${substitutedProperty.name}\" has no Argument annotation")
+    }
+}
+
+object JvmTargetDefaultSubstitutor : ExplicitDefaultSubstitutor() {
+    override val substitutedProperty
+        get() = K2JVMCompilerArguments::jvmTarget
+    private val oldDefault: String
+        get() = JvmTarget.JVM_1_6.description
+    private val newDefault: String
+        get() = JvmTarget.JVM_1_8.description
+
+    private fun prepareSubstitution(default: String): List<String> = listOf(argument.value, default)
+
+    override val oldSubstitution: List<String>
+        get() = prepareSubstitution(oldDefault)
+    override val newSubstitution: List<String>
+        get() = prepareSubstitution(newDefault)
+
+    override fun isSubstitutable(args: List<String>): Boolean = argument.value !in args
+}

build-common/src/org/jetbrains/kotlin/incremental/AbstractIncrementalCache.kt

@@ -19,6 +19,7 @@ package org.jetbrains.kotlin.incremental
 import com.intellij.util.io.EnumeratorStringDescriptor
 import org.jetbrains.kotlin.incremental.storage.*
 import org.jetbrains.kotlin.metadata.ProtoBuf
+import org.jetbrains.kotlin.metadata.deserialization.Flags
 import org.jetbrains.kotlin.metadata.deserialization.NameResolver
 import org.jetbrains.kotlin.metadata.deserialization.TypeTable
 import org.jetbrains.kotlin.metadata.deserialization.supertypes
@@ -34,12 +35,15 @@ interface IncrementalCacheCommon {
     val thisWithDependentCaches: Iterable<AbstractIncrementalCache<*>>
     fun classesFqNamesBySources(files: Iterable<File>): Collection<FqName>
     fun getSubtypesOf(className: FqName): Sequence<FqName>
+    fun getSupertypesOf(className: FqName): Sequence<FqName>
     fun getSourceFileIfClass(fqName: FqName): File?
     fun markDirty(removedAndCompiledSources: Collection<File>)
     fun clearCacheForRemovedClasses(changesCollector: ChangesCollector)
     fun getComplementaryFilesRecursive(dirtyFiles: Collection<File>): Collection<File>
     fun updateComplementaryFiles(dirtyFiles: Collection<File>, expectActualTracker: ExpectActualTrackerImpl)
     fun dump(): String
+
+    fun isSealed(className: FqName): Boolean?
 }
 
 /**
@@ -50,6 +54,7 @@ abstract class AbstractIncrementalCache<ClassName>(
     protected val pathConverter: FileToPathConverter
 ) : BasicMapsOwner(workingDir), IncrementalCacheCommon {
     companion object {
+        private val CLASS_ATTRIBUTES = "class-attributes"
         private val SUBTYPES = "subtypes"
         private val SUPERTYPES = "supertypes"
         private val CLASS_FQ_NAME_TO_SOURCE = "class-fq-name-to-source"
@@ -71,6 +76,7 @@ abstract class AbstractIncrementalCache<ClassName>(
         result
     }
 
+    internal val classAttributesMap = registerMap(ClassAttributesMap(CLASS_ATTRIBUTES.storageFile))
     private val subtypesMap = registerMap(SubtypesMap(SUBTYPES.storageFile))
     private val supertypesMap = registerMap(SupertypesMap(SUPERTYPES.storageFile))
     protected val classFqNameToSourceMap = registerMap(ClassFqNameToSourceMap(CLASS_FQ_NAME_TO_SOURCE.storageFile, pathConverter))
@@ -90,6 +96,14 @@ abstract class AbstractIncrementalCache<ClassName>(
     override fun getSubtypesOf(className: FqName): Sequence<FqName> =
         subtypesMap[className].asSequence()
 
+    override fun getSupertypesOf(className: FqName): Sequence<FqName> {
+        return supertypesMap[className].asSequence()
+    }
+
+    override fun isSealed(className: FqName): Boolean? {
+        return classAttributesMap[className]?.isSealed
+    }
+
     override fun getSourceFileIfClass(fqName: FqName): File? =
         classFqNameToSourceMap[fqName]
 
@@ -118,6 +132,7 @@ abstract class AbstractIncrementalCache<ClassName>(
 
         supertypesMap[child] = parents
         classFqNameToSourceMap[child] = srcFile
+        classAttributesMap[child] = ICClassesAttributes(ProtoBuf.Modality.SEALED == Flags.MODALITY.get(proto.flags))
     }
 
     protected fun removeAllFromClassStorage(removedClasses: Collection<FqName>, changesCollector: ChangesCollector) {
@@ -152,14 +167,17 @@ abstract class AbstractIncrementalCache<ClassName>(
             }
         }
 
-        removedFqNames.forEach { classFqNameToSourceMap.remove(it) }
+        removedFqNames.forEach {
+            classFqNameToSourceMap.remove(it)
+            classAttributesMap.remove(it)
+        }
     }
 
     protected class ClassFqNameToSourceMap(
         storageFile: File,
         private val pathConverter: FileToPathConverter
-    ) :
-        BasicStringMap<String>(storageFile, EnumeratorStringDescriptor(), PathStringDescriptor) {
+    ) : BasicStringMap<String>(storageFile, EnumeratorStringDescriptor(), PathStringDescriptor) {
+
         operator fun set(fqName: FqName, sourceFile: File) {
             storage[fqName.asString()] = pathConverter.toPath(sourceFile)
         }

build-common/src/org/jetbrains/kotlin/incremental/ChangesCollector.kt

@@ -19,12 +19,14 @@ package org.jetbrains.kotlin.incremental
 import org.jetbrains.kotlin.metadata.ProtoBuf
 import org.jetbrains.kotlin.metadata.deserialization.Flags
 import org.jetbrains.kotlin.metadata.deserialization.NameResolver
+import org.jetbrains.kotlin.metadata.deserialization.supertypes
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.protobuf.MessageLite
 import org.jetbrains.kotlin.serialization.deserialization.getClassId
 
 class ChangesCollector {
     private val removedMembers = hashMapOf<FqName, MutableSet<String>>()
+    private val changedParents = hashMapOf<FqName, MutableSet<FqName>>()
     private val changedMembers = hashMapOf<FqName, MutableSet<String>>()
     private val areSubclassesAffected = hashMapOf<FqName, Boolean>()
 
@@ -47,6 +49,10 @@ class ChangesCollector {
             changes.add(ChangeInfo.SignatureChanged(fqName, areSubclassesAffected))
         }
 
+        for ((fqName, changedParents) in changedParents) {
+            changes.add(ChangeInfo.ParentsChanged(fqName, changedParents))
+        }
+
         return changes
     }
 
@@ -79,12 +85,12 @@ class ChangesCollector {
         }
 
         if (oldData == null) {
-            newData!!.collectAll(isRemoved = false, collectAllMembersForNewClass = collectAllMembersForNewClass)
+            newData!!.collectAll(isRemoved = false, isAdded = true, collectAllMembersForNewClass = collectAllMembersForNewClass)
             return
         }
 
         if (newData == null) {
-            oldData.collectAll(isRemoved = true)
+            oldData.collectAll(isRemoved = true, isAdded = false)
             return
         }
 
@@ -98,6 +104,7 @@ class ChangesCollector {
                             collectSignature(oldData, diff.areSubclassesAffected)
                         }
                         collectChangedMembers(fqName, diff.changedMembersNames)
+                        addChangedParents(fqName, diff.changedSupertypes)
                     }
                     is PackagePartProtoData -> {
                         collectSignature(oldData, areSubclassesAffected = true)
@@ -121,10 +128,11 @@ class ChangesCollector {
     private fun <T> T.getNonPrivateNames(nameResolver: NameResolver, vararg members: T.() -> List<MessageLite>): Set<String> =
             members.flatMap { this.it().filterNot { it.isPrivate }.names(nameResolver) }.toSet()
 
-    private fun ProtoData.collectAll(isRemoved: Boolean, collectAllMembersForNewClass: Boolean = false) =
+    //TODO remember all sealed parent classes
+    private fun ProtoData.collectAll(isRemoved: Boolean, isAdded: Boolean, collectAllMembersForNewClass: Boolean = false) =
         when (this) {
             is PackagePartProtoData -> collectAllFromPackage(isRemoved)
-            is ClassProtoData -> collectAllFromClass(isRemoved, collectAllMembersForNewClass)
+            is ClassProtoData -> collectAllFromClass(isRemoved, isAdded, collectAllMembersForNewClass)
         }
 
     private fun PackagePartProtoData.collectAllFromPackage(isRemoved: Boolean) {
@@ -143,7 +151,7 @@ class ChangesCollector {
         }
     }
 
-    private fun ClassProtoData.collectAllFromClass(isRemoved: Boolean, collectAllMembersForNewClass: Boolean = false) {
+    private fun ClassProtoData.collectAllFromClass(isRemoved: Boolean, isAdded: Boolean, collectAllMembersForNewClass: Boolean = false) {
         val classFqName = nameResolver.getClassId(proto.fqName).asSingleFqName()
         val kind = Flags.CLASS_KIND.get(proto.flags)
 
@@ -162,6 +170,23 @@ class ChangesCollector {
 
             collectSignature(classFqName, areSubclassesAffected = true)
         }
+
+        if (isRemoved || isAdded) {
+            collectChangedParents(classFqName, proto.supertypeList)
+        }
+    }
+
+    private fun addChangedParents(fqName: FqName, parents: Collection<FqName>) {
+        if (parents.isNotEmpty()) {
+            changedParents.getOrPut(fqName) { HashSet() }.addAll(parents)
+        }
+    }
+
+    private fun ClassProtoData.collectChangedParents(fqName: FqName, parents: Collection<ProtoBuf.Type>) {
+        val changedParentsFqNames = parents.map { type ->
+            nameResolver.getClassId(type.className).asSingleFqName()
+        }
+        addChangedParents(fqName, changedParentsFqNames)
     }
 
     private fun ClassProtoData.getNonPrivateMemberNames(): Set<String> {

build-common/src/org/jetbrains/kotlin/incremental/IncrementalJsCache.kt

@@ -32,6 +32,7 @@ import org.jetbrains.kotlin.name.parentOrNull
 import org.jetbrains.kotlin.serialization.SerializerExtensionProtocol
 import org.jetbrains.kotlin.serialization.deserialization.getClassId
 import org.jetbrains.kotlin.serialization.js.JsSerializerProtocol
+import org.jetbrains.kotlin.util.capitalizeDecapitalize.capitalizeAsciiOnly
 import java.io.DataInput
 import java.io.DataOutput
 import java.io.File
@@ -326,7 +327,7 @@ private class ProtoDataProvider(private val serializerProtocol: SerializerExtens
         proto.`package`.apply {
             val packageNameId = getExtensionOrNull(serializerProtocol.packageFqName)
             val packageFqName = packageNameId?.let { FqName(nameResolver.getPackageFqName(it)) } ?: FqName.ROOT
-            val packagePartClassId = ClassId(packageFqName, Name.identifier(sourceFile.nameWithoutExtension.capitalize() + "Kt"))
+            val packagePartClassId = ClassId(packageFqName, Name.identifier(sourceFile.nameWithoutExtension.capitalizeAsciiOnly() + "Kt"))
             classes[packagePartClassId] = PackagePartProtoData(this, nameResolver, packageFqName)
         }
 
@@ -347,7 +348,7 @@ fun getProtoData(sourceFile: File, metadata: ByteArray): Map<ClassId, ProtoData>
 
     proto.`package`.apply {
         val packageFqName = getExtensionOrNull(JsProtoBuf.packageFqName)?.let(nameResolver::getPackageFqName)?.let(::FqName) ?: FqName.ROOT
-        val packagePartClassId = ClassId(packageFqName, Name.identifier(sourceFile.nameWithoutExtension.capitalize() + "Kt"))
+        val packagePartClassId = ClassId(packageFqName, Name.identifier(sourceFile.nameWithoutExtension.capitalizeAsciiOnly() + "Kt"))
         classes[packagePartClassId] = PackagePartProtoData(this, nameResolver, packageFqName)
     }
 
@@ -412,4 +413,4 @@ private class PackageMetadataMap(storageFile: File) : BasicStringMap<ByteArray>(
     operator fun get(packageName: String) = storage[packageName]
 
     override fun dumpValue(value: ByteArray): String = "Package metadata: ${value.md5()}"
-}
+}

build-common/src/org/jetbrains/kotlin/incremental/IncrementalJvmCache.kt

@@ -94,6 +94,10 @@ open class IncrementalJvmCache(
     fun sourcesByInternalName(internalName: String): Collection<File> =
         internalNameToSource[internalName]
 
+    fun getAllPartsOfMultifileFacade(facade: JvmClassName): Collection<String>? {
+        return multifileFacadeToParts[facade]
+    }
+
     fun isMultifileFacade(className: JvmClassName): Boolean =
         className in multifileFacadeToParts
 
@@ -145,6 +149,7 @@ open class IncrementalJvmCache(
                 }
                 protoMap.remove(className, changesCollector)
                 classFqNameToSourceMap.remove(className.fqNameForClassNameWithoutDollars)
+                classAttributesMap.remove(className.fqNameForClassNameWithoutDollars)
                 internalNameToSource.remove(className.internalName)
 
                 // TODO NO_CHANGES? (delegates only)
@@ -271,6 +276,7 @@ open class IncrementalJvmCache(
 
     private inner class ProtoMap(storageFile: File) : BasicStringMap<ProtoMapValue>(storageFile, ProtoMapValueExternalizer) {
 
+        @Synchronized
         fun process(kotlinClass: LocalFileKotlinClass, changesCollector: ChangesCollector) {
             return put(kotlinClass, changesCollector)
         }
@@ -282,10 +288,12 @@ open class IncrementalJvmCache(
         // from files compiled during last round.
         // However there is no need to compare old and new data in this case
         // (also that would fail with exception).
+        @Synchronized
         fun storeModuleMapping(className: JvmClassName, bytes: ByteArray) {
             storage[className.internalName] = ProtoMapValue(isPackageFacade = false, bytes = bytes, strings = emptyArray())
         }
 
+        @Synchronized
         private fun put(kotlinClass: LocalFileKotlinClass, changesCollector: ChangesCollector) {
             val header = kotlinClass.classHeader
 
@@ -308,6 +316,7 @@ open class IncrementalJvmCache(
         operator fun get(className: JvmClassName): ProtoMapValue? =
             storage[className.internalName]
 
+        @Synchronized
         fun remove(className: JvmClassName, changesCollector: ChangesCollector) {
             val key = className.internalName
             val oldValue = storage[key] ?: return
@@ -324,6 +333,8 @@ open class IncrementalJvmCache(
 
     private inner class JavaSourcesProtoMap(storageFile: File) :
         BasicStringMap<SerializedJavaClass>(storageFile, JavaClassProtoMapValueExternalizer) {
+
+        @Synchronized
         fun process(jvmClassName: JvmClassName, newData: SerializedJavaClass, changesCollector: ChangesCollector) {
             val key = jvmClassName.internalName
             val oldData = storage[key]
@@ -335,6 +346,7 @@ open class IncrementalJvmCache(
             )
         }
 
+        @Synchronized
         fun remove(className: JvmClassName, changesCollector: ChangesCollector) {
             val key = className.internalName
             val oldValue = storage[key] ?: return
@@ -374,6 +386,7 @@ open class IncrementalJvmCache(
         operator fun contains(className: JvmClassName): Boolean =
             className.internalName in storage
 
+        @Synchronized
         fun process(kotlinClass: LocalFileKotlinClass, changesCollector: ChangesCollector) {
             val key = kotlinClass.className.internalName
             val oldMap = storage[key] ?: emptyMap()
@@ -390,6 +403,7 @@ open class IncrementalJvmCache(
             }
         }
 
+        @Synchronized
         fun remove(className: JvmClassName) {
             storage.remove(className.internalName)
         }
@@ -415,6 +429,8 @@ open class IncrementalJvmCache(
 
     private inner class MultifileClassFacadeMap(storageFile: File) :
         BasicStringMap<Collection<String>>(storageFile, StringCollectionExternalizer) {
+
+        @Synchronized
         operator fun set(className: JvmClassName, partNames: Collection<String>) {
             storage[className.internalName] = partNames
         }
@@ -425,6 +441,7 @@ open class IncrementalJvmCache(
         operator fun contains(className: JvmClassName): Boolean =
             className.internalName in storage
 
+        @Synchronized
         fun remove(className: JvmClassName) {
             storage.remove(className.internalName)
         }
@@ -434,6 +451,8 @@ open class IncrementalJvmCache(
 
     private inner class MultifileClassPartMap(storageFile: File) :
         BasicStringMap<String>(storageFile, EnumeratorStringDescriptor.INSTANCE) {
+
+        @Synchronized
         fun set(partName: String, facadeName: String) {
             storage[partName] = facadeName
         }
@@ -441,6 +460,7 @@ open class IncrementalJvmCache(
         fun get(partName: JvmClassName): String? =
             storage[partName.internalName]
 
+        @Synchronized
         fun remove(className: JvmClassName) {
             storage.remove(className.internalName)
         }
@@ -522,6 +542,7 @@ open class IncrementalJvmCache(
             return result
         }
 
+        @Synchronized
         fun process(kotlinClass: LocalFileKotlinClass, changesCollector: ChangesCollector) {
             val key = kotlinClass.className.internalName
             val oldMap = storage[key] ?: emptyMap()
@@ -547,6 +568,7 @@ open class IncrementalJvmCache(
         private fun functionNameBySignature(signature: String): String =
             signature.substringBefore("(")
 
+        @Synchronized
         fun remove(className: JvmClassName) {
             storage.remove(className.internalName)
         }
@@ -568,6 +590,7 @@ sealed class ChangeInfo(val fqName: FqName) {
 
     class SignatureChanged(fqName: FqName, val areSubclassesAffected: Boolean) : ChangeInfo(fqName)
 
+    class ParentsChanged(fqName: FqName, val parentsChanged: Collection<FqName>) : ChangeInfo(fqName)
 
     protected open fun toStringProperties(): String = "fqName = $fqName"
 

build-common/src/org/jetbrains/kotlin/incremental/IncrementalModuleInfo.kt

@@ -21,6 +21,7 @@ data class IncrementalModuleEntry(
 
 class IncrementalModuleInfo(
     val projectRoot: File,
+    val rootProjectBuildDir: File,
     val dirToModule: Map<File, IncrementalModuleEntry>,
     val nameToModules: Map<String, Set<IncrementalModuleEntry>>,
     val jarToClassListFile: Map<File, File>,
@@ -28,6 +29,6 @@ class IncrementalModuleInfo(
     val jarToModule: Map<File, IncrementalModuleEntry>
 ) : Serializable {
     companion object {
-        private const val serialVersionUID = 0L
+        private const val serialVersionUID = 1L
     }
 }

build-common/src/org/jetbrains/kotlin/incremental/LookupStorage.kt

@@ -17,19 +17,18 @@
 package org.jetbrains.kotlin.incremental
 
 import com.intellij.util.containers.MultiMap
-import com.intellij.util.containers.StringInterner
 import org.jetbrains.annotations.TestOnly
 import org.jetbrains.kotlin.incremental.components.LookupTracker
 import org.jetbrains.kotlin.incremental.components.Position
 import org.jetbrains.kotlin.incremental.components.ScopeKind
 import org.jetbrains.kotlin.incremental.storage.*
 import org.jetbrains.kotlin.utils.Printer
+import org.jetbrains.kotlin.utils.createStringInterner
 import org.jetbrains.kotlin.utils.keysToMap
 import java.io.File
 import java.io.IOException
 import java.util.*
 
-
 open class LookupStorage(
     targetDataDir: File,
     pathConverter: FileToPathConverter
@@ -212,8 +211,8 @@ open class LookupStorage(
 
 class LookupTrackerImpl(private val delegate: LookupTracker) : LookupTracker {
     val lookups = MultiMap.createSet<LookupSymbol, String>()
-    val pathInterner = StringInterner()
-    private val interner = StringInterner()
+    val pathInterner = createStringInterner()
+    private val interner = createStringInterner()
 
     override val requiresPosition: Boolean
         get() = delegate.requiresPosition

build-common/src/org/jetbrains/kotlin/incremental/ProtoCompareGenerated.kt

@@ -182,6 +182,21 @@ open class ProtoCompareGenerated(
 
         if (!checkEqualsClassSealedSubclassFqName(old, new)) return false
 
+        if (old.hasInlineClassUnderlyingPropertyName() != new.hasInlineClassUnderlyingPropertyName()) return false
+        if (old.hasInlineClassUnderlyingPropertyName()) {
+            if (!checkStringEquals(old.inlineClassUnderlyingPropertyName, new.inlineClassUnderlyingPropertyName)) return false
+        }
+
+        if (old.hasInlineClassUnderlyingType() != new.hasInlineClassUnderlyingType()) return false
+        if (old.hasInlineClassUnderlyingType()) {
+            if (!checkEquals(old.inlineClassUnderlyingType, new.inlineClassUnderlyingType)) return false
+        }
+
+        if (old.hasInlineClassUnderlyingTypeId() != new.hasInlineClassUnderlyingTypeId()) return false
+        if (old.hasInlineClassUnderlyingTypeId()) {
+            if (!checkEquals(oldTypeTable.getType(old.inlineClassUnderlyingTypeId), newTypeTable.getType(new.inlineClassUnderlyingTypeId))) return false
+        }
+
         if (!checkEqualsClassVersionRequirement(old, new)) return false
 
         if (old.hasVersionRequirementTable() != new.hasVersionRequirementTable()) return false
@@ -266,6 +281,9 @@ open class ProtoCompareGenerated(
         TYPE_ALIAS_LIST,
         ENUM_ENTRY_LIST,
         SEALED_SUBCLASS_FQ_NAME_LIST,
+        INLINE_CLASS_UNDERLYING_PROPERTY_NAME,
+        INLINE_CLASS_UNDERLYING_TYPE,
+        INLINE_CLASS_UNDERLYING_TYPE_ID,
         VERSION_REQUIREMENT_LIST,
         VERSION_REQUIREMENT_TABLE,
         JVM_EXT_CLASS_MODULE_NAME,
@@ -314,6 +332,21 @@ open class ProtoCompareGenerated(
 
         if (!checkEqualsClassSealedSubclassFqName(old, new)) result.add(ProtoBufClassKind.SEALED_SUBCLASS_FQ_NAME_LIST)
 
+        if (old.hasInlineClassUnderlyingPropertyName() != new.hasInlineClassUnderlyingPropertyName()) result.add(ProtoBufClassKind.INLINE_CLASS_UNDERLYING_PROPERTY_NAME)
+        if (old.hasInlineClassUnderlyingPropertyName()) {
+            if (!checkStringEquals(old.inlineClassUnderlyingPropertyName, new.inlineClassUnderlyingPropertyName)) result.add(ProtoBufClassKind.INLINE_CLASS_UNDERLYING_PROPERTY_NAME)
+        }
+
+        if (old.hasInlineClassUnderlyingType() != new.hasInlineClassUnderlyingType()) result.add(ProtoBufClassKind.INLINE_CLASS_UNDERLYING_TYPE)
+        if (old.hasInlineClassUnderlyingType()) {
+            if (!checkEquals(old.inlineClassUnderlyingType, new.inlineClassUnderlyingType)) result.add(ProtoBufClassKind.INLINE_CLASS_UNDERLYING_TYPE)
+        }
+
+        if (old.hasInlineClassUnderlyingTypeId() != new.hasInlineClassUnderlyingTypeId()) result.add(ProtoBufClassKind.INLINE_CLASS_UNDERLYING_TYPE_ID)
+        if (old.hasInlineClassUnderlyingTypeId()) {
+            if (!checkEquals(oldTypeTable.getType(old.inlineClassUnderlyingTypeId), newTypeTable.getType(new.inlineClassUnderlyingTypeId))) result.add(ProtoBufClassKind.INLINE_CLASS_UNDERLYING_TYPE_ID)
+        }
+
         if (!checkEqualsClassVersionRequirement(old, new)) result.add(ProtoBufClassKind.VERSION_REQUIREMENT_LIST)
 
         if (old.hasVersionRequirementTable() != new.hasVersionRequirementTable()) result.add(ProtoBufClassKind.VERSION_REQUIREMENT_TABLE)
@@ -1728,6 +1761,18 @@ fun ProtoBuf.Class.hashCode(stringIndexes: (Int) -> Int, fqNameIndexes: (Int) ->
         hashCode = 31 * hashCode + fqNameIndexes(getSealedSubclassFqName(i))
     }
 
+    if (hasInlineClassUnderlyingPropertyName()) {
+        hashCode = 31 * hashCode + stringIndexes(inlineClassUnderlyingPropertyName)
+    }
+
+    if (hasInlineClassUnderlyingType()) {
+        hashCode = 31 * hashCode + inlineClassUnderlyingType.hashCode(stringIndexes, fqNameIndexes, typeById)
+    }
+
+    if (hasInlineClassUnderlyingTypeId()) {
+        hashCode = 31 * hashCode + typeById(inlineClassUnderlyingTypeId).hashCode(stringIndexes, fqNameIndexes, typeById)
+    }
+
     for(i in 0..versionRequirementCount - 1) {
         hashCode = 31 * hashCode + getVersionRequirement(i)
     }

build-common/src/org/jetbrains/kotlin/incremental/buildUtil.kt

@@ -20,6 +20,7 @@ import org.jetbrains.kotlin.build.GeneratedFile
 import org.jetbrains.kotlin.build.GeneratedJvmClass
 import org.jetbrains.kotlin.build.JvmSourceRoot
 import org.jetbrains.kotlin.build.isModuleMappingFile
+import org.jetbrains.kotlin.build.report.ICReporter
 import org.jetbrains.kotlin.config.Services
 import org.jetbrains.kotlin.incremental.components.LookupTracker
 import org.jetbrains.kotlin.load.kotlin.incremental.components.IncrementalCache
@@ -31,6 +32,7 @@ import org.jetbrains.kotlin.progress.CompilationCanceledStatus
 import org.jetbrains.kotlin.resolve.sam.SAM_LOOKUP_NAME
 import org.jetbrains.kotlin.utils.addToStdlib.flattenTo
 import java.io.File
+import java.nio.file.Files
 import java.util.*
 import kotlin.collections.HashSet
 import kotlin.collections.LinkedHashSet
@@ -66,7 +68,7 @@ fun makeModuleFile(
         friendDirs
     )
 
-    val scriptFile = File.createTempFile("kjps", sanitizeJavaIdentifier(name) + ".script.xml")
+    val scriptFile = Files.createTempFile("kjps", sanitizeJavaIdentifier(name) + ".script.xml").toFile()
     scriptFile.writeText(builder.asText().toString())
     return scriptFile
 }
@@ -134,7 +136,8 @@ fun LookupStorage.update(
 
 data class DirtyData(
     val dirtyLookupSymbols: Collection<LookupSymbol> = emptyList(),
-    val dirtyClassesFqNames: Collection<FqName> = emptyList()
+    val dirtyClassesFqNames: Collection<FqName> = emptyList(),
+    val dirtyClassesFqNamesForceRecompile: Collection<FqName> = emptyList()
 )
 
 fun ChangesCollector.getDirtyData(
@@ -144,6 +147,9 @@ fun ChangesCollector.getDirtyData(
     val dirtyLookupSymbols = HashSet<LookupSymbol>()
     val dirtyClassesFqNames = HashSet<FqName>()
 
+    val sealedParents = HashMap<FqName, MutableSet<FqName>>()
+    val notSealedParents = HashSet<FqName>()
+
     for (change in changes()) {
         reporter.reportVerbose { "Process $change" }
 
@@ -168,10 +174,35 @@ fun ChangesCollector.getDirtyData(
             }
 
             fqNames.mapTo(dirtyLookupSymbols) { LookupSymbol(SAM_LOOKUP_NAME.asString(), it.asString()) }
+        } else if (change is ChangeInfo.ParentsChanged) {
+            fun FqName.isSealed(): Boolean {
+                if (notSealedParents.contains(this)) return false
+                if (sealedParents.containsKey(this)) return true
+                return isSealed(this, caches).also { sealed ->
+                    if (sealed) {
+                        sealedParents[this] = HashSet()
+                    } else {
+                        notSealedParents.add(this)
+                    }
+                }
+            }
+            change.parentsChanged.forEach { parent ->
+                if (parent.isSealed()) {
+                    sealedParents.getOrPut(parent) { HashSet() }.add(change.fqName)
+                }
+            }
         }
     }
 
-    return DirtyData(dirtyLookupSymbols, dirtyClassesFqNames)
+    val forceRecompile = HashSet<FqName>().apply {
+        addAll(sealedParents.keys)
+        //we should recompile all inheritors with parent sealed class: add known subtypes
+        addAll(sealedParents.keys.flatMap { withSubtypes(it, caches) })
+        //we should recompile all inheritors with parent sealed class: add new subtypes
+        addAll(sealedParents.values.flatten())
+    }
+
+    return DirtyData(dirtyLookupSymbols, dirtyClassesFqNames, forceRecompile)
 }
 
 fun mapLookupSymbolsToFiles(
@@ -215,6 +246,11 @@ fun mapClassesFqNamesToFiles(
     return fqNameToAffectedFiles.values.flattenTo(HashSet())
 }
 
+fun isSealed(
+    fqName: FqName,
+    caches: Iterable<IncrementalCacheCommon>
+): Boolean = caches.any { it.isSealed(fqName) ?: false }
+
 fun withSubtypes(
     typeFqName: FqName,
     caches: Iterable<IncrementalCacheCommon>

build-common/src/org/jetbrains/kotlin/incremental/protoDifferenceUtils.kt

@@ -27,12 +27,15 @@ import org.jetbrains.kotlin.metadata.jvm.deserialization.JvmProtoBufUtil
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.protobuf.MessageLite
 import org.jetbrains.kotlin.serialization.deserialization.ProtoEnumFlags
+import org.jetbrains.kotlin.serialization.deserialization.descriptorVisibility
+import org.jetbrains.kotlin.serialization.deserialization.getClassId
 import java.util.*
 
 data class Difference(
     val isClassAffected: Boolean = false,
     val areSubclassesAffected: Boolean = false,
-    val changedMembersNames: Set<String> = emptySet()
+    val changedMembersNames: Set<String> = emptySet(),
+    val changedSupertypes: Set<FqName> = emptySet()
 )
 
 sealed class ProtoData
@@ -50,7 +53,7 @@ fun ProtoMapValue.toProtoData(packageFqName: FqName): ProtoData =
 
 internal val MessageLite.isPrivate: Boolean
     get() = DescriptorVisibilities.isPrivate(
-        ProtoEnumFlags.visibility(
+        ProtoEnumFlags.descriptorVisibility(
             when (this) {
                 is ProtoBuf.Constructor -> Flags.VISIBILITY.get(flags)
                 is ProtoBuf.Function -> Flags.VISIBILITY.get(flags)
@@ -186,6 +189,7 @@ class DifferenceCalculatorForClass(
 
         var isClassAffected = false
         var areSubclassesAffected = false
+        val changedSupertypes = HashSet<FqName>()
         val names = hashSetOf<String>()
         val classIsSealed = newProto.isSealed && oldProto.isSealed
 
@@ -246,12 +250,21 @@ class DifferenceCalculatorForClass(
                 ProtoBufClassKind.FLAGS,
                 ProtoBufClassKind.FQ_NAME,
                 ProtoBufClassKind.TYPE_PARAMETER_LIST,
-                ProtoBufClassKind.SUPERTYPE_LIST,
-                ProtoBufClassKind.SUPERTYPE_ID_LIST,
                 ProtoBufClassKind.JS_EXT_CLASS_ANNOTATION_LIST -> {
                     isClassAffected = true
                     areSubclassesAffected = true
                 }
+
+                ProtoBufClassKind.SUPERTYPE_LIST,
+                ProtoBufClassKind.SUPERTYPE_ID_LIST -> {
+                    isClassAffected = true
+                    areSubclassesAffected = true
+
+                    val oldSupertypes = oldProto.supertypeList.map { oldNameResolver.getClassId(it.className).asSingleFqName() }
+                    val newSupertypes = newProto.supertypeList.map { newNameResolver.getClassId(it.className).asSingleFqName() }
+                    val changed = (oldSupertypes union newSupertypes) subtract (oldSupertypes intersect newSupertypes)
+                    changedSupertypes.addAll(changed)
+                }
                 ProtoBufClassKind.JVM_EXT_CLASS_MODULE_NAME,
                 ProtoBufClassKind.JS_EXT_CLASS_CONTAINING_FILE_ID -> {
                     // TODO
@@ -277,10 +290,15 @@ class DifferenceCalculatorForClass(
                     isClassAffected = true
                     areSubclassesAffected = true
                 }
+                ProtoBufClassKind.INLINE_CLASS_UNDERLYING_PROPERTY_NAME,
+                ProtoBufClassKind.INLINE_CLASS_UNDERLYING_TYPE,
+                ProtoBufClassKind.INLINE_CLASS_UNDERLYING_TYPE_ID -> {
+                    isClassAffected = true
+                }
             }
         }
 
-        return Difference(isClassAffected, areSubclassesAffected, names)
+        return Difference(isClassAffected, areSubclassesAffected, names, changedSupertypes)
     }
 }
 

build-common/src/org/jetbrains/kotlin/incremental/storage/BasicMapsOwner.kt

@@ -30,6 +30,7 @@ open class BasicMapsOwner(val cachesDir: File) {
     protected val String.storageFile: File
         get() = File(cachesDir, this + "." + CACHE_EXTENSION)
 
+    @Synchronized
     protected fun <K, V, M : BasicMap<K, V>> registerMap(map: M): M {
         maps.add(map)
         return map
@@ -47,6 +48,7 @@ open class BasicMapsOwner(val cachesDir: File) {
         forEachMapSafe("flush") { it.flush(memoryCachesOnly) }
     }
 
+    @Synchronized
     private fun forEachMapSafe(actionName: String, action: (BasicMap<*, *>) -> Unit) {
         val actionExceptions = LinkedHashMap<String, Exception>()
         maps.forEach {
@@ -66,5 +68,6 @@ open class BasicMapsOwner(val cachesDir: File) {
     }
 
     @TestOnly
+    @Synchronized
     fun dump(): String = maps.joinToString("\n\n") { it.dump() }
 }

build-common/src/org/jetbrains/kotlin/incremental/storage/CachingLazyStorage.kt

@@ -17,9 +17,11 @@
 package org.jetbrains.kotlin.incremental.storage
 
 import com.intellij.util.io.DataExternalizer
+import com.intellij.util.io.IOUtil
 import com.intellij.util.io.KeyDescriptor
 import com.intellij.util.io.PersistentHashMap
 import java.io.File
+import java.io.IOException
 
 
 /**
@@ -30,7 +32,6 @@ class CachingLazyStorage<K, V>(
     private val keyDescriptor: KeyDescriptor<K>,
     private val valueExternalizer: DataExternalizer<V>
 ) : LazyStorage<K, V> {
-    @Volatile
     private var storage: PersistentHashMap<K, V>? = null
 
     @Synchronized
@@ -80,8 +81,10 @@ class CachingLazyStorage<K, V>(
         try {
             storage?.close()
         } finally {
-            PersistentHashMap.deleteFilesStartingWith(storageFile)
             storage = null
+            if (!IOUtil.deleteAllFilesStartingWith(storageFile)) {
+                throw IOException("Could not delete internal storage: ${storageFile.absolutePath}")
+            }
         }
     }
 

build-common/src/org/jetbrains/kotlin/incremental/storage/ClassAttributesMap.kt

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2010-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.jetbrains.kotlin.incremental.storage
+
+import com.intellij.util.io.DataExternalizer
+import org.jetbrains.kotlin.name.FqName
+import java.io.DataInput
+import java.io.DataOutput
+import java.io.File
+
+internal data class ICClassesAttributes(val isSealed: Boolean)
+
+internal object ICClassesAttributesExternalizer : DataExternalizer<ICClassesAttributes> {
+    override fun read(input: DataInput): ICClassesAttributes {
+        return ICClassesAttributes(input.readBoolean())
+    }
+
+    override fun save(output: DataOutput, value: ICClassesAttributes) {
+        output.writeBoolean(value.isSealed)
+    }
+}
+
+internal open class ClassAttributesMap(
+    storageFile: File
+) : BasicStringMap<ICClassesAttributes>(storageFile, ICClassesAttributesExternalizer) {
+    override fun dumpValue(value: ICClassesAttributes): String = value.toString()
+
+    operator fun set(key: FqName, value: ICClassesAttributes) {
+        storage[key.asString()] = value
+    }
+
+    operator fun get(key: FqName): ICClassesAttributes? = storage[key.asString()]
+
+    fun remove(key: FqName) {
+        storage.remove(key.asString())
+    }
+}

build-common/src/org/jetbrains/kotlin/incremental/storage/ClassOneToManyMap.kt

@@ -20,18 +20,18 @@ import org.jetbrains.kotlin.incremental.dumpCollection
 import org.jetbrains.kotlin.name.FqName
 import java.io.File
 
-internal open class ClassOneToManyMap(
-        storageFile: File
-) : BasicStringMap<Collection<String>>(storageFile, StringCollectionExternalizer) {
+internal open class ClassOneToManyMap(storageFile: File) : BasicStringMap<Collection<String>>(storageFile, StringCollectionExternalizer) {
     override fun dumpValue(value: Collection<String>): String = value.dumpCollection()
 
+    @Synchronized
     fun add(key: FqName, value: FqName) {
         storage.append(key.asString(), listOf(value.asString()))
     }
 
     operator fun get(key: FqName): Collection<FqName> =
-            storage[key.asString()]?.map(::FqName) ?: setOf()
+        storage[key.asString()]?.map(::FqName) ?: setOf()
 
+    @Synchronized
     operator fun set(key: FqName, values: Collection<FqName>) {
         if (values.isEmpty()) {
             remove(key)
@@ -41,10 +41,14 @@ internal open class ClassOneToManyMap(
         storage[key.asString()] = values.map(FqName::asString)
     }
 
+    @Synchronized
     fun remove(key: FqName) {
         storage.remove(key.asString())
     }
 
+    // Access to caches could be done from multiple threads (e.g. JPS worker and RMI). The underlying collection is already synchronized,
+    // thus we need synchronization of this method and all modification methods.
+    @Synchronized
     fun removeValues(key: FqName, removed: Set<FqName>) {
         val notRemoved = this[key].filter { it !in removed }
         this[key] = notRemoved

build-common/src/org/jetbrains/kotlin/incremental/storage/DirtyClassesMaps.kt

@@ -25,8 +25,7 @@ internal class DirtyClassesJvmNameMap(storageFile: File) : AbstractDirtyClassesM
 internal class DirtyClassesFqNameMap(storageFile: File) : AbstractDirtyClassesMap<FqName>(FqNameTransformer, storageFile)
 
 internal abstract class AbstractDirtyClassesMap<Name>(
-        private val nameTransformer: NameTransformer<Name>,
-        storageFile: File
+    private val nameTransformer: NameTransformer<Name>, storageFile: File
 ) : BasicStringMap<Boolean>(storageFile, BooleanDataDescriptor.INSTANCE) {
     fun markDirty(className: Name) {
         storage[nameTransformer.asString(className)] = true
@@ -37,10 +36,10 @@ internal abstract class AbstractDirtyClassesMap<Name>(
     }
 
     fun getDirtyOutputClasses(): Collection<Name> =
-            storage.keys.map { nameTransformer.asName(it) }
+        storage.keys.map { nameTransformer.asName(it) }
 
     fun isDirty(className: Name): Boolean =
-            storage.contains(nameTransformer.asString(className))
+        storage.contains(nameTransformer.asString(className))
 
     override fun dumpValue(value: Boolean) = ""
 }

build-common/src/org/jetbrains/kotlin/incremental/storage/IncrementalFileToPathConverter.kt

@@ -0,0 +1,34 @@
+/*
+ * Copyright 2010-2020 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.incremental.storage
+
+import java.io.File
+
+open class IncrementalFileToPathConverter(val rootProjectDir: File?) : FileToPathConverter {
+    //project root dir
+    private val projectDirPath = rootProjectDir?.normalize()?.absolutePath
+
+    override fun toPath(file: File): String {
+        val path = file.normalize().absolutePath
+        return when {
+            projectDirPath == null || !path.startsWith(projectDirPath) -> path
+            else -> PROJECT_DIR_PLACEHOLDER + path.substring(projectDirPath.length)
+        }
+    }
+
+    override fun toFile(path: String): File =
+        when {
+            rootProjectDir != null && path.startsWith(PROJECT_DIR_PLACEHOLDER) -> rootProjectDir.resolve(path.substring(PATH_PREFIX.length))
+            else -> File(path)
+        }
+
+    private companion object {
+        private const val PROJECT_DIR_PLACEHOLDER = "${'$'}PROJECT_DIR$"
+        //use only for prefix length because it OS dependent
+        private const val PATH_PREFIX = "$PROJECT_DIR_PLACEHOLDER/"
+
+    }
+}

build-common/src/org/jetbrains/kotlin/incremental/storage/NonCachingLazyStorage.kt

@@ -17,9 +17,11 @@
 package org.jetbrains.kotlin.incremental.storage
 
 import com.intellij.util.io.DataExternalizer
+import com.intellij.util.io.IOUtil
 import com.intellij.util.io.KeyDescriptor
 import com.intellij.util.io.PersistentHashMap
 import java.io.File
+import java.io.IOException
 
 
 class NonCachingLazyStorage<K, V>(
@@ -27,7 +29,6 @@ class NonCachingLazyStorage<K, V>(
     private val keyDescriptor: KeyDescriptor<K>,
     private val valueExternalizer: DataExternalizer<V>
 ) : LazyStorage<K, V> {
-    @Volatile
     private var storage: PersistentHashMap<K, V>? = null
 
     @Synchronized
@@ -76,11 +77,12 @@ class NonCachingLazyStorage<K, V>(
     override fun clean() {
         try {
             storage?.close()
-        } catch (ignored: Throwable) {
+        } finally {
+            storage = null
+            if (!IOUtil.deleteAllFilesStartingWith(storageFile)) {
+                throw IOException("Could not delete internal storage: ${storageFile.absolutePath}")
+            }
         }
-
-        PersistentHashMap.deleteFilesStartingWith(storageFile)
-        storage = null
     }
 
     @Synchronized

build-common/src/org/jetbrains/kotlin/incremental/storage/NonCachingLazyStorage.kt.193

@@ -1,106 +0,0 @@
-/*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.kotlin.incremental.storage
-
-import com.intellij.util.io.DataExternalizer
-import com.intellij.util.io.KeyDescriptor
-import com.intellij.util.io.JpsPersistentHashMap
-import java.io.File
-
-
-class NonCachingLazyStorage<K, V>(
-    private val storageFile: File,
-    private val keyDescriptor: KeyDescriptor<K>,
-    private val valueExternalizer: DataExternalizer<V>
-) : LazyStorage<K, V> {
-    @Volatile
-    private var storage: JpsPersistentHashMap<K, V>? = null
-
-    @Synchronized
-    private fun getStorageIfExists(): JpsPersistentHashMap<K, V>? {
-        if (storage != null) return storage
-
-        if (storageFile.exists()) {
-            storage = createMap()
-            return storage
-        }
-
-        return null
-    }
-
-    @Synchronized
-    private fun getStorageOrCreateNew(): JpsPersistentHashMap<K, V> {
-        if (storage == null) {
-            storage = createMap()
-        }
-
-        return storage!!
-    }
-
-    override val keys: Collection<K>
-        get() = getStorageIfExists()?.allKeysWithExistingMapping ?: listOf()
-
-    override operator fun contains(key: K): Boolean =
-        getStorageIfExists()?.containsMapping(key) ?: false
-
-    override operator fun get(key: K): V? =
-        getStorageIfExists()?.get(key)
-
-    override operator fun set(key: K, value: V) {
-        getStorageOrCreateNew().put(key, value)
-    }
-
-    override fun remove(key: K) {
-        getStorageIfExists()?.remove(key)
-    }
-
-    override fun append(key: K, value: V) {
-        getStorageOrCreateNew().appendDataWithoutCache(key, value)
-    }
-
-    @Synchronized
-    override fun clean() {
-        try {
-            storage?.close()
-        } catch (ignored: Throwable) {
-        }
-
-        JpsPersistentHashMap.deleteFilesStartingWith(storageFile)
-        storage = null
-    }
-
-    @Synchronized
-    override fun flush(memoryCachesOnly: Boolean) {
-        val existingStorage = storage ?: return
-
-        if (memoryCachesOnly) {
-            if (existingStorage.isDirty) {
-                existingStorage.dropMemoryCaches()
-            }
-        } else {
-            existingStorage.force()
-        }
-    }
-
-    @Synchronized
-    override fun close() {
-        storage?.close()
-    }
-
-    private fun createMap(): JpsPersistentHashMap<K, V> =
-        JpsPersistentHashMap(storageFile, keyDescriptor, valueExternalizer)
-}

build-common/test/org/jetbrains/kotlin/build/BuildMetaInfoTest.kt

@@ -17,7 +17,6 @@
 package org.jetbrains.kotlin.build
 
 import junit.framework.TestCase
-import org.jetbrains.kotlin.cli.common.arguments.CommonCompilerArguments
 import org.jetbrains.kotlin.cli.common.arguments.K2JVMCompilerArguments
 import org.junit.Assert.assertNotEquals
 import org.junit.Test
@@ -34,10 +33,7 @@ class BuildMetaInfoTest : TestCase() {
             "bytecodeVersionMinor",
             "bytecodeVersionPatch",
             "compilerBuildVersion",
-            "coroutinesEnable",
-            "coroutinesError",
             "coroutinesVersion",
-            "coroutinesWarn",
             "isEAP",
             "languageVersionString",
             "metadataVersionMajor",
@@ -71,14 +67,12 @@ class BuildMetaInfoTest : TestCase() {
     @Test
     fun testJvmEquals() {
         val args1 = K2JVMCompilerArguments()
-        args1.coroutinesState = CommonCompilerArguments.ENABLE
         val info1 = JvmBuildMetaInfo.create(args1)
 
         val args2 = K2JVMCompilerArguments()
-        args2.coroutinesState = CommonCompilerArguments.WARN
         val info2 = JvmBuildMetaInfo.create(args2)
 
-        assertNotEquals(info1, info2)
-        assertEquals(info1, info2.copy(coroutinesEnable = true, coroutinesWarn = false))
+        assertEquals(info1, info2)
+        assertEquals(info1, info2.copy())
     }
 }

build-common/test/org/jetbrains/kotlin/incremental/storage/IncrementalFileToPathConverterTest.kt

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2010-2020 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.incremental.storage
+
+import org.jetbrains.kotlin.TestWithWorkingDir
+import org.junit.Test
+import java.io.File
+
+internal class IncrementalFileToPathConverterTest : TestWithWorkingDir() {
+    val separator: String = File.separator
+
+    @Test
+    fun testPathTransform() {
+        val relativeFilePath = "testFile.txt"
+        val transformedPath = testPathTransformation(workingDir.resolve("testDir"), relativeFilePath)
+
+        assertEquals("${'$'}PROJECT_DIR${'$'}$separator$relativeFilePath", transformedPath)
+    }
+
+    @Test
+    fun testComplicatedProjectRootPath() {
+        val relativeFilePath = "testFile.txt"
+        val transformedPath = testPathTransformation(workingDir.resolve("first$separator..${separator}testDir"), relativeFilePath)
+
+        assertEquals("${'$'}PROJECT_DIR${'$'}$separator$relativeFilePath", transformedPath)
+    }
+
+    @Test
+    fun testInccorectProjectRootPath() {
+        val relativeFilePath = "testFile.txt"
+        val transformedPath = testPathTransformation(workingDir.resolve("testDir$separator"), relativeFilePath)
+
+        assertEquals("${'$'}PROJECT_DIR${'$'}$separator$relativeFilePath", transformedPath)
+    }
+
+    @Test
+    fun testFileOutOfProject() {
+        val relativeFilePath = "..${separator}testFile.txt"
+        val transformedPath = testPathTransformation(workingDir.resolve("testDir"), relativeFilePath)
+
+        assertEquals("${workingDir.absolutePath}${separator}testFile.txt", transformedPath)
+    }
+
+    @Test
+    fun testFileWithExtraSlash() {
+        val relativeFilePath = "testFile.txt$separator"
+        val transformedPath = testPathTransformation(workingDir.resolve("testDir"), relativeFilePath)
+
+        assertEquals("${'$'}PROJECT_DIR${'$'}${separator}testFile.txt", transformedPath)
+    }
+
+    private fun testPathTransformation(projectRoot: File, relativeFilePath: String): String {
+        val pathConverter = IncrementalFileToPathConverter(projectRoot)
+        val testFile = projectRoot.resolve(relativeFilePath)
+        val transformedPath = pathConverter.toPath(testFile)
+        assertEquals(testFile.normalize().absolutePath, pathConverter.toFile(transformedPath).normalize().absolutePath)
+        return transformedPath
+    }
+}

build-common/test/org/jetbrains/kotlin/incremental/testingUtils/BuildLogFinder.kt

@@ -22,12 +22,12 @@ data class BuildLogFinder(
     private val isDataContainerBuildLogEnabled: Boolean = false,
     private val isGradleEnabled: Boolean = false,
     private val isJsEnabled: Boolean = false,
-    private val isJsIrEnabled: Boolean = false, // TODO rename as it is used for metadata-only test
-    private val isScopeExpansionEnabled: Boolean = false
+    private val isScopeExpansionEnabled: Boolean = false,
+    private val isKlibEnabled: Boolean = false
 ) {
     companion object {
         private const val JS_LOG = "js-build.log"
-        private const val JS_IR_LOG = "js-ir-build.log"
+        private const val KLIB_LOG = "klib-build.log"
         private const val SCOPE_EXPANDING_LOG = "build-with-scope-expansion.log"
         private const val GRADLE_LOG = "gradle-build.log"
         private const val DATA_CONTAINER_LOG = "data-container-version-build.log"
@@ -43,7 +43,7 @@ data class BuildLogFinder(
         val files = names.filter { File(dir, it).isFile }.toSet()
         val matchedName = when {
             isScopeExpansionEnabled && SCOPE_EXPANDING_LOG in files -> SCOPE_EXPANDING_LOG
-            isJsIrEnabled && JS_IR_LOG in files -> JS_IR_LOG
+            isKlibEnabled && KLIB_LOG in files -> KLIB_LOG
             isJsEnabled && JS_LOG in files -> JS_LOG
             isGradleEnabled && GRADLE_LOG in files -> GRADLE_LOG
             isJsEnabled && JS_JPS_LOG in files -> JS_JPS_LOG

build-common/test/org/jetbrains/kotlin/incremental/testingUtils/classFilesComparison.kt

@@ -151,29 +151,35 @@ private fun classFileToString(classFile: File): String {
     val traceVisitor = TraceClassVisitor(PrintWriter(out))
     ClassReader(classFile.readBytes()).accept(traceVisitor, 0)
 
-    val classHeader = LocalFileKotlinClass.create(classFile)?.classHeader
+    val classHeader = LocalFileKotlinClass.create(classFile)?.classHeader ?: return ""
+    if (!classHeader.metadataVersion.isCompatible()) {
+        error("Incompatible class ($classHeader): $classFile")
+    }
 
-    val annotationDataEncoded = classHeader?.data
-    if (annotationDataEncoded != null) {
-        ByteArrayInputStream(BitEncoding.decodeBytes(annotationDataEncoded)).use {
-            input ->
+    when (classHeader.kind) {
+        KotlinClassHeader.Kind.FILE_FACADE, KotlinClassHeader.Kind.CLASS, KotlinClassHeader.Kind.MULTIFILE_CLASS_PART -> {
+            ByteArrayInputStream(BitEncoding.decodeBytes(classHeader.data!!)).use { input ->
+                out.write("\n------ string table types proto -----\n${DebugJvmProtoBuf.StringTableTypes.parseDelimitedFrom(input)}")
 
-            out.write("\n------ string table types proto -----\n${DebugJvmProtoBuf.StringTableTypes.parseDelimitedFrom(input)}")
-
-            if (!classHeader.metadataVersion.isCompatible()) {
-                error("Incompatible class ($classHeader): $classFile")
-            }
-
-            when (classHeader.kind) {
-                KotlinClassHeader.Kind.FILE_FACADE ->
-                    out.write("\n------ file facade proto -----\n${DebugProtoBuf.Package.parseFrom(input, getExtensionRegistry())}")
-                KotlinClassHeader.Kind.CLASS ->
-                    out.write("\n------ class proto -----\n${DebugProtoBuf.Class.parseFrom(input, getExtensionRegistry())}")
-                KotlinClassHeader.Kind.MULTIFILE_CLASS_PART ->
-                    out.write("\n------ multi-file part proto -----\n${DebugProtoBuf.Package.parseFrom(input, getExtensionRegistry())}")
-                else -> throw IllegalStateException()
+                when (classHeader.kind) {
+                    KotlinClassHeader.Kind.FILE_FACADE ->
+                        out.write("\n------ file facade proto -----\n${DebugProtoBuf.Package.parseFrom(input, getExtensionRegistry())}")
+                    KotlinClassHeader.Kind.CLASS ->
+                        out.write("\n------ class proto -----\n${DebugProtoBuf.Class.parseFrom(input, getExtensionRegistry())}")
+                    KotlinClassHeader.Kind.MULTIFILE_CLASS_PART ->
+                        out.write("\n------ multi-file part proto -----\n${DebugProtoBuf.Package.parseFrom(input, getExtensionRegistry())}")
+                    else -> error(classHeader.kind)
+                }
             }
         }
+        KotlinClassHeader.Kind.MULTIFILE_CLASS -> {
+            out.write("\n------ multi-file facade data -----\n")
+            out.write(classHeader.data!!.joinToString("\n"))
+        }
+        KotlinClassHeader.Kind.SYNTHETIC_CLASS -> {
+            // Synthetic class has no metadata, thus there can be no differences in it.
+        }
+        KotlinClassHeader.Kind.UNKNOWN -> error("Should not meet unknown classes here: $classFile")
     }
 
     return out.toString()

build-common/test/org/jetbrains/kotlin/metadata/jvm/DebugJvmProtoBuf.java

@@ -4656,7 +4656,8 @@ public final class DebugJvmProtoBuf {
    * <code>extend .org.jetbrains.kotlin.metadata.Class { ... }</code>
    *
    * <pre>
-   * isFunctionBodyInInterface: 0 if actual body generated in DefaultImpl, 1 - otherwise (in interface default method)
+   * first bit: isFunctionBodyInInterface: 0 if actual body generated in DefaultImpl, 1 - otherwise (in interface default method)
+   * second bit: is all-compatibility mode or not, 1 - yes, 0 - no
    * </pre>
    */
   public static final

build.gradle.kts

@@ -7,7 +7,7 @@ import proguard.gradle.ProGuardTask
 buildscript {
     val cacheRedirectorEnabled = findProperty("cacheRedirectorEnabled")?.toString()?.toBoolean() == true
 
-    kotlinBootstrapFrom(BootstrapOption.BintrayBootstrap(kotlinBuildProperties.kotlinBootstrapVersion!!, cacheRedirectorEnabled))
+    kotlinBootstrapFrom(BootstrapOption.SpaceBootstrap(kotlinBuildProperties.kotlinBootstrapVersion!!, cacheRedirectorEnabled))
 
     repositories {
         bootstrapKotlinRepo?.let(::maven)
@@ -27,9 +27,11 @@ buildscript {
     dependencies {
         bootstrapCompilerClasspath(kotlin("compiler-embeddable", bootstrapKotlinVersion))
 
-        classpath("org.jetbrains.kotlin:kotlin-build-gradle-plugin:0.0.19")
+        classpath("org.jetbrains.kotlin:kotlin-build-gradle-plugin:0.0.21")
         classpath(kotlin("gradle-plugin", bootstrapKotlinVersion))
+        classpath(kotlin("serialization", bootstrapKotlinVersion))
         classpath("org.jetbrains.dokka:dokka-gradle-plugin:0.9.17")
+        classpath("org.jfrog.buildinfo:build-info-extractor-gradle:4.17.2")
     }
 }
 
@@ -72,7 +74,7 @@ val kotlinVersion by extra(
         } ?: buildNumber
 )
 
-val kotlinLanguageVersion by extra("1.4")
+val kotlinLanguageVersion by extra("1.5")
 
 allprojects {
     group = "org.jetbrains.kotlin"
@@ -164,21 +166,19 @@ extra["versions.jansi"] = "1.16"
 extra["versions.jline"] = "3.3.1"
 extra["versions.junit"] = "4.12"
 extra["versions.javaslang"] = "2.0.6"
-extra["versions.ant"] = "1.8.2"
+extra["versions.ant"] = "1.10.7"
 extra["versions.android"] = "2.3.1"
-val coroutinesVersion = if (Platform[192].orHigher()) "1.3.7" else "1.1.1"
-extra["versions.kotlinx-coroutines-core"] = coroutinesVersion
-extra["versions.kotlinx-coroutines-jdk8"] = coroutinesVersion
+extra["versions.kotlinx-coroutines-core"] = "1.3.8"
+extra["versions.kotlinx-coroutines-jdk8"] = "1.3.8"
 extra["versions.json"] = "20160807"
 extra["versions.native-platform"] = "0.14"
-extra["versions.ant-launcher"] = "1.8.0"
 extra["versions.robolectric"] = "4.0"
 extra["versions.org.springframework"] = "4.2.0.RELEASE"
 extra["versions.jflex"] = "1.7.0"
 extra["versions.markdown"] = "0.1.25"
 extra["versions.trove4j"] = "1.0.20181211"
-extra["versions.completion-ranking-kotlin"] = "0.1.2"
-extra["versions.r8"] = "2.0.88"
+extra["versions.completion-ranking-kotlin"] = "0.1.3"
+extra["versions.r8"] = "2.1.75"
 val immutablesVersion = "0.3.1"
 extra["versions.kotlinx-collections-immutable"] = immutablesVersion
 extra["versions.kotlinx-collections-immutable-jvm"] = immutablesVersion
@@ -187,13 +187,14 @@ extra["versions.kotlinx-collections-immutable-jvm"] = immutablesVersion
 extra["versions.ktor-network"] = "1.0.1"
 
 if (!project.hasProperty("versions.kotlin-native")) {
-    extra["versions.kotlin-native"] = "1.4.20-dev-16314"
+    extra["versions.kotlin-native"] = "1.5-rc1-41"
 }
 
 val intellijUltimateEnabled by extra(project.kotlinBuildProperties.intellijUltimateEnabled)
 val effectSystemEnabled by extra(project.getBooleanProperty("kotlin.compiler.effectSystemEnabled") ?: false)
 val newInferenceEnabled by extra(project.getBooleanProperty("kotlin.compiler.newInferenceEnabled") ?: false)
-val useJvmIrBackend by extra(project.getBooleanProperty("kotlin.build.useIR") ?: false)
+val useJvmIrBackend by extra(project.kotlinBuildProperties.useIR)
+val useJvmFir by extra(project.kotlinBuildProperties.useFir)
 
 val intellijSeparateSdks = project.getBooleanProperty("intellijSeparateSdks") ?: false
 
@@ -267,8 +268,11 @@ extra["compilerModules"] = arrayOf(
     ":kotlin-build-common",
     ":core:metadata",
     ":core:metadata.jvm",
+    ":core:deserialization.common",
+    ":core:deserialization.common.jvm",
     ":core:compiler.common",
     ":core:compiler.common.jvm",
+    ":compiler:backend.common.jvm",
     ":core:descriptors",
     ":core:descriptors.jvm",
     ":core:descriptors.runtime",
@@ -288,7 +292,9 @@ extra["compilerModules"] = arrayOf(
     ":compiler:fir:jvm",
     ":compiler:fir:checkers",
     ":compiler:fir:entrypoint",
-    ":compiler:fir:analysis-tests"
+    ":compiler:fir:analysis-tests",
+    ":compiler:fir:analysis-tests:legacy-fir-tests",
+    ":wasm:wasm.ir"
 )
 
 extra["compilerModulesForJps"] = listOf(
@@ -314,12 +320,32 @@ extra["compilerModulesForJps"] = listOf(
     ":compiler:compiler.version"
 )
 
+// TODO: fix remaining warnings and remove this property.
+extra["tasksWithWarnings"] = listOf(
+    ":kotlin-stdlib:compileTestKotlin",
+    ":kotlin-stdlib-jdk7:compileTestKotlin",
+    ":kotlin-stdlib-jdk8:compileTestKotlin",
+    ":compiler:cli:compileKotlin",
+    ":compiler:frontend:compileKotlin",
+    ":compiler:fir:tree:compileKotlin",
+    ":compiler:fir:resolve:compileKotlin",
+    ":compiler:fir:checkers:compileKotlin",
+    ":compiler:fir:java:compileKotlin",
+    ":kotlin-scripting-compiler:compileKotlin",
+    ":plugins:uast-kotlin:compileKotlin",
+    ":plugins:uast-kotlin:compileTestKotlin",
+    ":plugins:uast-kotlin-idea:compileKotlin"
+)
+
+val tasksWithWarnings: List<String> by extra
+
 val coreLibProjects = listOfNotNull(
     ":kotlin-stdlib",
     ":kotlin-stdlib-common",
     ":kotlin-stdlib-js",
     ":kotlin-stdlib-jdk7",
     ":kotlin-stdlib-jdk8",
+    ":kotlin-test",
     ":kotlin-test:kotlin-test-annotations-common",
     ":kotlin-test:kotlin-test-common",
     ":kotlin-test:kotlin-test-jvm",
@@ -327,8 +353,7 @@ val coreLibProjects = listOfNotNull(
     ":kotlin-test:kotlin-test-junit5",
     ":kotlin-test:kotlin-test-testng",
     ":kotlin-test:kotlin-test-js".takeIf { !kotlinBuildProperties.isInJpsBuildIdeaSync },
-    ":kotlin-reflect",
-    ":kotlin-coroutines-experimental-compat"
+    ":kotlin-reflect"
 )
 
 val gradlePluginProjects = listOf(
@@ -337,7 +362,8 @@ val gradlePluginProjects = listOf(
     ":kotlin-allopen",
     ":kotlin-annotation-processing-gradle",
     ":kotlin-noarg",
-    ":kotlin-sam-with-receiver"
+    ":kotlin-sam-with-receiver",
+    ":kotlin-parcelize-compiler"
 )
 
 apply {
@@ -398,15 +424,19 @@ allprojects {
     repositories {
         kotlinBuildLocalRepo(project)
         mirrorRepo?.let(::maven)
-        jcenter()
-        maven(protobufRepo)
-        maven(intellijRepo)
-        maven("https://dl.bintray.com/kotlin/ktor")
-        maven("https://kotlin.bintray.com/kotlin-dependencies")
-        maven("https://jetbrains.bintray.com/intellij-third-party-dependencies")
-        maven("https://dl.google.com/dl/android/maven2")
-        bootstrapKotlinRepo?.let(::maven)
+
         internalBootstrapRepo?.let(::maven)
+        bootstrapKotlinRepo?.let(::maven)
+        maven(protobufRepo)
+
+        maven(intellijRepo)
+
+        mavenCentral()
+        maven("https://maven.pkg.jetbrains.space/kotlin/p/kotlin/kotlin-dependencies")
+        maven("https://dl.google.com/dl/android/maven2")
+        maven("https://packages.jetbrains.team/maven/p/ij/intellij-dependencies")
+
+        jcenter()
     }
 
     configureJvmProject(javaHome!!, jvmTarget!!)
@@ -439,6 +469,26 @@ allprojects {
             if (useJvmIrBackend) {
                 useIR = true
             }
+
+            if (useJvmFir) {
+                freeCompilerArgs += "-Xuse-fir"
+                freeCompilerArgs += "-Xabi-stability=stable"
+            }
+        }
+    }
+
+    if (!kotlinBuildProperties.isInJpsBuildIdeaSync && !kotlinBuildProperties.useFir && !kotlinBuildProperties.disableWerror) {
+        // For compiler and stdlib, allWarningsAsErrors is configured in the corresponding "root" projects
+        // (compiler/build.gradle.kts and libraries/commonConfiguration.gradle).
+        val projectsWithWarningsAsErrors = listOf("core", "plugins").map { File(it).absoluteFile }
+        if (projectsWithWarningsAsErrors.any(projectDir::startsWith)) {
+            tasks.withType<org.jetbrains.kotlin.gradle.dsl.KotlinJvmCompile> {
+                if (path !in tasksWithWarnings) {
+                    kotlinOptions {
+                        allWarningsAsErrors = true
+                    }
+                }
+            }
         }
     }
 
@@ -460,17 +510,7 @@ allprojects {
     }
 
     tasks.withType<Test> {
-        outputs.doNotCacheIf("https://youtrack.jetbrains.com/issue/KT-37089") { true }
-    }
-
-    tasks.withType<SourceTask>().configureEach {
-        doFirst {
-            source.visit {
-                if (file.isDirectory && file.listFiles()?.isEmpty() == true) {
-                    logger.warn("Empty source directories may cause build cache misses: " + file.absolutePath)
-                }
-            }
-        }
+        outputs.doNotCacheIf("https://youtrack.jetbrains.com/issue/KTI-112") { true }
     }
 
     normalization {
@@ -532,16 +572,33 @@ allprojects {
     }
 }
 
+gradle.buildFinished {
+    val taskGraph = gradle?.taskGraph
+    if (taskGraph != null) {
+        taskGraph.allTasks
+                .filterIsInstance<SourceTask>()
+                .filter { it.didWork }
+                .forEach {
+                    it.source.visit {
+                        if (file.isDirectory && file.listFiles()?.isEmpty() == true) {
+                            logger.warn("Empty source directories may cause build cache misses: " + file.absolutePath)
+                        }
+                    }
+                }
+    }
+}
+
 gradle.taskGraph.whenReady {
     fun Boolean.toOnOff(): String = if (this) "on" else "off"
     val profile = if (isTeamcityBuild) "CI" else "Local"
 
     val proguardMessage = "proguard is ${kotlinBuildProperties.proguard.toOnOff()}"
     val jarCompressionMessage = "jar compression is ${kotlinBuildProperties.jarCompression.toOnOff()}"
-                val profileMessage = "$profile build profile is active ($proguardMessage, $jarCompressionMessage). " +
-            "Use -Pteamcity=<true|false> to reproduce CI/local build"
 
-    logger.warn("\n\n$profileMessage")
+    logger.warn(
+        "$profile build profile is active ($proguardMessage, $jarCompressionMessage). " +
+                "Use -Pteamcity=<true|false> to reproduce CI/local build"
+    )
 
     allTasks.filterIsInstance<org.gradle.jvm.tasks.Jar>().forEach { task ->
         task.entryCompression = if (kotlinBuildProperties.jarCompression)
@@ -556,7 +613,7 @@ val dist = tasks.register("dist") {
 }
 
 val syncMutedTests = tasks.register("syncMutedTests") {
-    dependsOn(":compiler:tests-mutes:run")
+    dependsOn(":compiler:tests-mutes:tc-integration:run")
 }
 
 val copyCompilerToIdeaPlugin by task<Copy> {
@@ -586,7 +643,10 @@ tasks {
 
     listOf("clean", "assemble", "install").forEach { taskName ->
         register("coreLibs${taskName.capitalize()}") {
-            coreLibProjects.forEach { projectName -> dependsOn("$projectName:$taskName") }
+            for (projectName in coreLibProjects) {
+                if (projectName.startsWith(":kotlin-test:") && taskName == "install") continue
+                dependsOn("$projectName:$taskName")
+            }
         }
     }
 
@@ -617,6 +677,7 @@ tasks {
         dependsOn("dist")
         dependsOn(
             ":compiler:test",
+            ":compiler:tests-common-new:test",
             ":compiler:container:test",
             ":compiler:tests-java8:test",
             ":compiler:tests-spec:test",
@@ -638,8 +699,11 @@ tasks {
     }
 
     register("wasmCompilerTest") {
-//  TODO: fix once
-//        dependsOn(":js:js.tests:wasmTest")
+        dependsOn(":js:js.tests:wasmTest")
+        // Windows WABT release requires Visual C++ Redistributable
+        if (!kotlinBuildProperties.isTeamcityBuild || !org.gradle.internal.os.OperatingSystem.current().isWindows) {
+            dependsOn(":wasm:wasm.ir:test")
+        }
     }
 
     register("nativeCompilerTest") {
@@ -650,6 +714,7 @@ tasks {
         dependsOn(":compiler:fir:raw-fir:psi2fir:test")
         dependsOn(":compiler:fir:raw-fir:light-tree2fir:test")
         dependsOn(":compiler:fir:analysis-tests:test")
+        dependsOn(":compiler:fir:analysis-tests:legacy-fir-tests:test")
         dependsOn(":compiler:fir:fir2ir:test")
     }
 
@@ -659,6 +724,7 @@ tasks {
             ":compiler:fir:raw-fir:psi2fir:test",
             ":compiler:fir:raw-fir:light-tree2fir:test",
             ":compiler:fir:analysis-tests:test",
+            ":compiler:fir:analysis-tests:legacy-fir-tests:test",
             ":compiler:fir:fir2ir:test",
             ":plugins:fir:fir-plugin-prototype:test"
         )
@@ -671,10 +737,12 @@ tasks {
     register("scriptingTest") {
         dependsOn("dist")
         dependsOn(":kotlin-script-util:test")
-        dependsOn(":kotlin-scripting-compiler-embeddable:test")
+        dependsOn(":kotlin-scripting-compiler:test")
+        dependsOn(":kotlin-scripting-compiler:testWithIr")
         dependsOn(":kotlin-scripting-common:test")
         dependsOn(":kotlin-scripting-jvm:test")
         dependsOn(":kotlin-scripting-jvm-host-test:test")
+        dependsOn(":kotlin-scripting-jvm-host-test:testWithIr")
         dependsOn(":kotlin-scripting-dependencies:test")
         dependsOn(":kotlin-scripting-dependencies-maven:test")
         dependsOn(":kotlin-scripting-jsr223-test:test")
@@ -682,6 +750,7 @@ tasks {
 //        dependsOn(":kotlin-scripting-jvm-host-test:embeddableTest")
         dependsOn(":kotlin-scripting-jsr223-test:embeddableTest")
         dependsOn(":kotlin-main-kts-test:test")
+        dependsOn(":kotlin-main-kts-test:testWithIr")
         dependsOn(":kotlin-scripting-ide-services-test:test")
         dependsOn(":kotlin-scripting-ide-services-test:embeddableTest")
         dependsOn(":kotlin-scripting-js-test:test")
@@ -694,17 +763,18 @@ tasks {
     }
 
     register("miscCompilerTest") {
-        dependsOn("wasmCompilerTest")
         dependsOn("nativeCompilerTest")
-        dependsOn("firCompilerTest")
 
         dependsOn(":kotlin-daemon-tests:test")
         dependsOn("scriptingTest")
         dependsOn(":kotlin-build-common:test")
         dependsOn(":compiler:incremental-compilation-impl:test")
+        dependsOn(":compiler:incremental-compilation-impl:testJvmICWithJdk11")
         dependsOn(":core:descriptors.runtime:test")
 
         dependsOn("jvmCompilerIntegrationTest")
+
+        dependsOn(":plugins:parcelize:parcelize-compiler:test")
     }
 
     register("toolsTest") {
@@ -756,7 +826,6 @@ tasks {
 
     if (Ide.IJ()) {
         register("idea-new-project-wizard-tests") {
-            dependsOn("dist")
             dependsOn(
                 ":libraries:tools:new-project-wizard:test",
                 ":libraries:tools:new-project-wizard:new-project-wizard-cli:test",
@@ -766,18 +835,38 @@ tasks {
     }
 
     register("idea-plugin-performance-tests") {
-        dependsOn("dist")
         dependsOn(
-            ":idea:performanceTests:performanceTest"
+            "dist",
+            ":idea:performanceTests:performanceTest",
+            ":idea:performanceTests:aggregateResults"
         )
     }
 
+    register("idea-fir-plugin-performance-tests") {
+        dependsOn("dist")
+        dependsOn(
+            ":idea:idea-fir-performance-tests:ideaFirPerformanceTest"
+        )
+    }
+
+    register("idea-fir-plugin-tests") {
+        dependsOn("dist")
+        dependsOn(
+            ":idea:idea-fir:test",
+            ":idea:idea-frontend-api:test",
+            ":idea:idea-frontend-fir:test",
+            ":idea:idea-frontend-fir:idea-fir-low-level-api:test"
+        )
+    }
+
+
     register("android-ide-tests") {
         dependsOn("dist")
         dependsOn(
             ":plugins:android-extensions-ide:test",
             ":idea:idea-android:test",
-            ":kotlin-annotation-processing:test"
+            ":kotlin-annotation-processing:test",
+            ":plugins:parcelize:parcelize-ide:test"
         )
     }
 
@@ -809,12 +898,24 @@ tasks {
             ":generators:test"
         )
         if (Ide.IJ()) {
-            dependsOn("idea-new-project-wizard-tests")
+            dependsOn(
+                ":libraries:tools:new-project-wizard:test",
+                ":libraries:tools:new-project-wizard:new-project-wizard-cli:test",
+                ":idea:idea-new-project-wizard:test" // Temporary here. Remove after enabling builds for ideaIntegrationsTests
+            )
+        }
+    }
+
+    register("ideaIntegrationsTests") {
+        if (Ide.IJ()) {
+            dependsOn(":idea:idea-new-project-wizard:test")
         }
     }
 
     register("kaptIdeTest") {
         dependsOn(":kotlin-annotation-processing:test")
+        dependsOn(":kotlin-annotation-processing-base:test")
+        dependsOn(":kotlin-annotation-processing-cli:test")
     }
 
     register("gradleIdeTest") {
@@ -829,10 +930,11 @@ tasks {
             ":idea:idea-gradle:test",
             ":idea:test",
             ":compiler:test",
+            ":compiler:container:test",
             ":js:js.tests:test"
         )
-        if (Ide.IJ193.orHigher())
-            dependsOn(":kotlin-gradle-plugin-integration-tests:test")
+
+        dependsOn(":kotlin-gradle-plugin-integration-tests:test")
         if (Ide.AS40.orHigher())
             dependsOn(":kotlin-ultimate:ide:android-studio-native:test")
 
@@ -862,16 +964,15 @@ tasks {
             dependsOn(
                 ":prepare:ide-plugin-dependencies:android-extensions-compiler-plugin-for-ide:publish",
                 ":prepare:ide-plugin-dependencies:allopen-compiler-plugin-for-ide:publish",
-                ":prepare:ide-plugin-dependencies:allopen-compiler-plugin-tests-for-ide:publish",
                 ":prepare:ide-plugin-dependencies:incremental-compilation-impl-tests-for-ide:publish",
                 ":prepare:ide-plugin-dependencies:kotlin-build-common-tests-for-ide:publish",
                 ":prepare:ide-plugin-dependencies:kotlin-compiler-for-ide:publish",
-                ":prepare:ide-plugin-dependencies:kotlin-dist-for-ide:publish",
                 ":prepare:ide-plugin-dependencies:kotlin-gradle-statistics-for-ide:publish",
                 ":prepare:ide-plugin-dependencies:kotlinx-serialization-compiler-plugin-for-ide:publish",
                 ":prepare:ide-plugin-dependencies:noarg-compiler-plugin-for-ide:publish",
                 ":prepare:ide-plugin-dependencies:sam-with-receiver-compiler-plugin-for-ide:publish",
                 ":prepare:ide-plugin-dependencies:compiler-components-for-jps:publish",
+                ":prepare:ide-plugin-dependencies:parcelize-compiler-plugin-for-ide:publish",
                 ":kotlin-script-runtime:publish",
                 ":kotlin-script-util:publish",
                 ":kotlin-scripting-common:publish",
@@ -884,9 +985,7 @@ tasks {
                 ":kotlin-stdlib-jdk7:publish",
                 ":kotlin-stdlib-jdk8:publish",
                 ":kotlin-reflect:publish",
-                ":kotlin-main-kts:publish",
-                ":kotlin-stdlib-js:publish",
-                ":kotlin-test:kotlin-test-js:publish"
+                ":kotlin-main-kts:publish"
             )
         }
     }
@@ -953,7 +1052,7 @@ val zipPlugin by task<Zip> {
     setExecutablePermissions()
 
     doLast {
-        logger.lifecycle("Plugin artifacts packed to $archiveFile")
+        logger.lifecycle("Plugin artifacts packed to ${archiveFile.get()}")
     }
 }
 

buildSrc/build.gradle.kts

@@ -1,3 +1,5 @@
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
+
 extra["versions.native-platform"] = "0.14"
 
 buildscript {
@@ -5,15 +7,15 @@ buildscript {
     val cacheRedirectorEnabled = findProperty("cacheRedirectorEnabled")?.toString()?.toBoolean() == true
 
     extra["defaultSnapshotVersion"] = kotlinBuildProperties.defaultSnapshotVersion
-    kotlinBootstrapFrom(BootstrapOption.BintrayBootstrap(kotlinBuildProperties.kotlinBootstrapVersion!!, cacheRedirectorEnabled))
+    kotlinBootstrapFrom(BootstrapOption.SpaceBootstrap(kotlinBuildProperties.kotlinBootstrapVersion!!, cacheRedirectorEnabled))
 
     repositories {
         if (cacheRedirectorEnabled) {
             maven("https://cache-redirector.jetbrains.com/jcenter.bintray.com")
-            maven("https://cache-redirector.jetbrains.com/kotlin.bintray.com/kotlin-dependencies")
+            maven("https://cache-redirector.jetbrains.com/maven.pkg.jetbrains.space/kotlin/p/kotlin/kotlin-dependencies")
         } else {
             jcenter()
-            maven("https://kotlin.bintray.com/kotlin-dependencies")
+            maven("https://maven.pkg.jetbrains.space/kotlin/p/kotlin/kotlin-dependencies")
         }
 
         project.bootstrapKotlinRepo?.let {
@@ -22,7 +24,7 @@ buildscript {
     }
 
     dependencies {
-        classpath("org.jetbrains.kotlin:kotlin-build-gradle-plugin:0.0.19")
+        classpath("org.jetbrains.kotlin:kotlin-build-gradle-plugin:0.0.21")
         classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:${project.bootstrapKotlinVersion}")
         classpath("org.jetbrains.kotlin:kotlin-sam-with-receiver:${project.bootstrapKotlinVersion}")
     }
@@ -85,8 +87,8 @@ extra["customDepsOrg"] = "kotlin.build"
 
 repositories {
     jcenter()
-    maven("https://jetbrains.bintray.com/intellij-third-party-dependencies/")
-    maven("https://kotlin.bintray.com/kotlin-dependencies")
+    maven("https://packages.jetbrains.team/maven/p/ij/intellij-dependencies")
+    maven("https://maven.pkg.jetbrains.space/kotlin/p/kotlin/kotlin-dependencies")
     gradlePluginPortal()
 
     extra["bootstrapKotlinRepo"]?.let {
@@ -97,8 +99,8 @@ repositories {
 dependencies {
     implementation(kotlin("stdlib", embeddedKotlinVersion))
     implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:${project.bootstrapKotlinVersion}")
-    implementation("org.jetbrains.kotlin:kotlin-build-gradle-plugin:0.0.19")
-    implementation("com.gradle.publish:plugin-publish-plugin:0.11.0")
+    implementation("org.jetbrains.kotlin:kotlin-build-gradle-plugin:0.0.21")
+    implementation("com.gradle.publish:plugin-publish-plugin:0.12.0")
 
     implementation("net.rubygrapefruit:native-platform:${property("versions.native-platform")}")
     implementation("net.rubygrapefruit:native-platform-windows-amd64:${property("versions.native-platform")}")
@@ -112,6 +114,7 @@ dependencies {
     implementation("gradle.plugin.org.jetbrains.gradle.plugin.idea-ext:gradle-idea-ext:0.5")
 
     implementation("org.gradle:test-retry-gradle-plugin:1.1.9")
+    implementation("com.gradle.enterprise:test-distribution-gradle-plugin:1.2.1")
 }
 
 samWithReceiver {
@@ -126,6 +129,11 @@ java {
     targetCompatibility = JavaVersion.VERSION_1_8
 }
 
+tasks.withType<KotlinCompile>().configureEach {
+    kotlinOptions.freeCompilerArgs +=
+        listOf("-Xopt-in=kotlin.RequiresOptIn", "-Xskip-runtime-version-check")
+}
+
 tasks["build"].dependsOn(":prepare-deps:build")
 
 allprojects {

buildSrc/prepare-deps/build.gradle.kts

@@ -65,28 +65,11 @@ repositories {
                 artifact()
             }
         }
-
-        ivy {
-            url = URI("https://dl.bintray.com/kotlin/as/")
-
-            patternLayout {
-                artifact("[artifact]-[revision]-$androidStudioOs.[ext]")
-            }
-
-            credentials {
-                username = System.getenv("AS_BINTRAY_USER_NAME") ?: findProperty("bintray.user") as String?
-                password = System.getenv("AS_BINTRAY_API_KEY") ?: findProperty("bintray.apikey") as String?
-            }
-
-            metadataSources {
-                artifact()
-            }
-        }
     }
 
     maven("https://www.jetbrains.com/intellij-repository/$intellijReleaseType")
     maven("https://plugins.jetbrains.com/maven")
-    maven("https://jetbrains.bintray.com/intellij-third-party-dependencies/")
+    maven("https://packages.jetbrains.team/maven/p/ij/intellij-dependencies")
 }
 
 val intellij by configurations.creating
@@ -255,9 +238,8 @@ fun buildIvyRepositoryTask(
         inputs.files(configuration)
 
         outputs.upToDateWhen {
-            configuration.resolvedConfiguration.resolvedArtifacts.single()
-                .moduleDirectory()
-                .exists()
+            val repoMarker = configuration.resolvedConfiguration.resolvedArtifacts.single().moduleDirectory().resolve(".marker")
+            repoMarker.exists()
         }
 
         doFirst {
@@ -266,8 +248,9 @@ fun buildIvyRepositoryTask(
 
             artifact.storeDirectory().cleanStore()
 
-            if (moduleDirectory.exists()) {
-                logger.info("Path ${moduleDirectory.absolutePath} already exists, skipping unpacking.")
+            val repoMarker = File(moduleDirectory, ".marker")
+            if (repoMarker.exists()) {
+                logger.info("Path ${repoMarker.absolutePath} already exists, skipping unpacking.")
                 return@doFirst
             }
 
@@ -326,6 +309,8 @@ fun buildIvyRepositoryTask(
                             )
                         }
                 }
+
+                repoMarker.createNewFile()
             }
         }
     }

buildSrc/settings.gradle

@@ -14,13 +14,13 @@ pluginManagement {
 buildscript {
     repositories {
         if (cacheRedirectorEnabled == 'true') {
-            maven { url "https://cache-redirector.jetbrains.com/kotlin.bintray.com/kotlin-dependencies" }
+            maven { url "https://cache-redirector.jetbrains.com/maven.pkg.jetbrains.space/kotlin/p/kotlin/kotlin-dependencies" }
         } else {
-            maven { url "https://kotlin.bintray.com/kotlin-dependencies" }
+            maven { url "https://maven.pkg.jetbrains.space/kotlin/p/kotlin/kotlin-dependencies" }
         }
     }
     dependencies {
-        classpath("org.jetbrains.kotlin:kotlin-build-gradle-plugin:0.0.19")
+        classpath("org.jetbrains.kotlin:kotlin-build-gradle-plugin:0.0.21")
     }
 }
 
@@ -46,12 +46,12 @@ if (target_AppCode_Clion) {
 } else if (target_AndroidStudio) {
     logger.info("Including modules for AS (mobile plugin) in buildSrc/settings.gradle")
 
-    include ":prepare-deps:cocoa-common-binaries"
+    include ":prepare-deps:appcode-binaries"
     include ":prepare-deps:lldb-framework"
     include ":prepare-deps:lldb-frontend"
 
-    project(":prepare-deps:cocoa-common-binaries").projectDir =
-            file("${buildProperties.propertiesProvider.rootProjectDir}/kotlin-ultimate/buildSrc/prepare-deps/cocoa-common-binaries")
+    project(":prepare-deps:appcode-binaries").projectDir =
+            file("${buildProperties.propertiesProvider.rootProjectDir}/kotlin-ultimate/buildSrc/prepare-deps/appcode-binaries")
     project(":prepare-deps:lldb-framework").projectDir =
             file("${buildProperties.propertiesProvider.rootProjectDir}/kotlin-ultimate/buildSrc/prepare-deps/lldb-framework")
     project(":prepare-deps:lldb-frontend").projectDir =
@@ -69,4 +69,4 @@ if (target_AppCode_Clion) {
 
 } else {
     logger.info("Not including extra modules in buildSrc/settings.gradle")
-}
+}

buildSrc/src/main/kotlin/BuildPropertiesExt.kt

@@ -18,3 +18,5 @@ val KotlinBuildProperties.proguard: Boolean get() = postProcessing && getBoolean
 val KotlinBuildProperties.jarCompression: Boolean get() = getBoolean("kotlin.build.jar.compression", isTeamcityBuild)
 
 val KotlinBuildProperties.ignoreTestFailures: Boolean get() = getBoolean("ignoreTestFailures", isTeamcityBuild)
+
+val KotlinBuildProperties.disableWerror: Boolean get() = getBoolean("kotlin.build.disable.werror", isTeamcityBuild)

buildSrc/src/main/kotlin/CommonUtil.kt

@@ -54,11 +54,12 @@ var Project.javaHome: String?
         extra["javaHome"] = v
     }
 
-fun Project.generator(fqName: String, sourceSet: SourceSet? = null) = smartJavaExec {
+fun Project.generator(fqName: String, sourceSet: SourceSet? = null, configure: JavaExec.() -> Unit = {}) = smartJavaExec {
     classpath = (sourceSet ?: testSourceSet).runtimeClasspath
     mainClass.set(fqName)
     workingDir = rootDir
     systemProperty("line.separator", "\n")
+    configure()
 }
 
 fun Project.getBooleanProperty(name: String): Boolean? = this.findProperty(name)?.let {

buildSrc/src/main/kotlin/IdeCompatibilityDsl.kt

@@ -54,7 +54,7 @@ enum class Ide(val platform: Platform) : CompatibilityPredicate {
     AS36(Platform.P192),
     AS40(Platform.P193),
     AS41(Platform.P201),
-    AS42(Platform.P201);
+    AS42(Platform.P202);
 
     val kind = Kind.values().first { it.shortName == name.take(2) }
     val version = name.dropWhile { !it.isDigit() }.toInt()

buildSrc/src/main/kotlin/artifacts.kt

@@ -71,18 +71,6 @@ fun Project.noDefaultJar() {
     }
 }
 
-fun <T : Task> Project.runtimeJarArtifactBy(
-    task: TaskProvider<T>,
-    artifactRef: Any,
-    body: ConfigurablePublishArtifact.() -> Unit = {}
-) {
-    addArtifact("archives", task, artifactRef, body)
-    addArtifact("runtimeJar", task, artifactRef, body)
-    configurations.findByName("runtime")?.let {
-        addArtifact(it.name, task, artifactRef, body)
-    }
-}
-
 fun Project.runtimeJar(body: Jar.() -> Unit = {}): TaskProvider<Jar> = runtimeJar(getOrCreateTask("jar", body)) { }
 
 fun <T : Jar> Project.runtimeJar(task: TaskProvider<T>, body: T.() -> Unit = {}): TaskProvider<T> {
@@ -103,7 +91,11 @@ fun <T : Jar> Project.runtimeJar(task: TaskProvider<T>, body: T.() -> Unit = {})
         body()
     }
 
-    project.runtimeJarArtifactBy(task, task)
+    project.addArtifact("archives", task, task)
+    project.addArtifact("runtimeJar", task, task)
+    project.configurations.findByName("runtime")?.let {
+        project.addArtifact(it.name, task, task)
+    }
 
     val runtimeJar = configurations.maybeCreate("runtimeJar").apply {
         isCanBeConsumed = true

buildSrc/src/main/kotlin/dependencies.kt

@@ -9,10 +9,13 @@
 
 import org.gradle.api.GradleException
 import org.gradle.api.Project
+import org.gradle.api.artifacts.Dependency
+import org.gradle.api.artifacts.ExternalModuleDependency
 import org.gradle.api.artifacts.ProjectDependency
 import org.gradle.api.artifacts.dsl.DependencyHandler
 import org.gradle.api.file.ConfigurableFileCollection
 import org.gradle.api.file.FileCollection
+import org.gradle.kotlin.dsl.accessors.runtime.addDependencyTo
 import org.gradle.kotlin.dsl.extra
 import org.gradle.kotlin.dsl.project
 import java.io.File
@@ -112,6 +115,50 @@ fun DependencyHandler.projectTests(name: String): ProjectDependency = project(na
 fun DependencyHandler.projectRuntimeJar(name: String): ProjectDependency = project(name, configuration = "runtimeJar")
 fun DependencyHandler.projectArchives(name: String): ProjectDependency = project(name, configuration = "archives")
 
+fun Project.testApiJUnit5(
+    vintageEngine: Boolean = false,
+    runner: Boolean = false,
+    suiteApi: Boolean = false
+) {
+    with(dependencies) {
+        val platformVersion = commonVer("org.junit", "junit-bom")
+        testApi(platform("org.junit:junit-bom:$platformVersion"))
+        testApi("org.junit.jupiter:junit-jupiter")
+        if (vintageEngine) {
+            testApi("org.junit.vintage:junit-vintage-engine:$platformVersion")
+        }
+        val componentsVersion = commonVer("org.junit.platform", "")
+
+        val components = mutableListOf(
+            "org.junit.platform:junit-platform-commons",
+            "org.junit.platform:junit-platform-launcher"
+        )
+        if (runner) {
+            components += "org.junit.platform:junit-platform-runner"
+        }
+        if (suiteApi) {
+            components += "org.junit.platform:junit-platform-suite-api"
+        }
+
+        for (component in components) {
+            testApi("$component:$componentsVersion")
+        }
+
+        addDependencyTo<ExternalModuleDependency>(this, "testImplementation", intellijDep()) {
+            // This dependency is needed only for FileComparisonFailure
+            includeJars("idea_rt", rootProject = rootProject)
+            isTransitive = false
+        }
+
+        // This is needed only for using FileComparisonFailure, which relies on JUnit 3 classes
+        add("testRuntimeOnly", commonDep("junit:junit"))
+    }
+}
+
+private fun DependencyHandler.testApi(dependencyNotation: Any) {
+    add("testApi", dependencyNotation)
+}
+
 val Project.protobufVersion: String get() = findProperty("versions.protobuf") as String
 
 val Project.protobufRepo: String

buildSrc/src/main/kotlin/embeddable.kt

@@ -5,10 +5,13 @@ import org.gradle.api.Project
 import org.gradle.api.file.DuplicatesStrategy
 import org.gradle.api.tasks.TaskProvider
 import org.gradle.jvm.tasks.Jar
-import org.gradle.kotlin.dsl.*
+import org.gradle.kotlin.dsl.named
+import org.gradle.kotlin.dsl.project
+import org.gradle.kotlin.dsl.provideDelegate
+import org.gradle.kotlin.dsl.register
 import java.io.File
 
-val kotlinEmbeddableRootPackage = "org.jetbrains.kotlin"
+const val kotlinEmbeddableRootPackage = "org.jetbrains.kotlin"
 
 val packagesToRelocate =
     listOf(
@@ -22,6 +25,7 @@ val packagesToRelocate =
         "org.fusesource",
         "net.jpountz",
         "one.util.streamex",
+        "it.unimi.dsi.fastutil",
         "kotlinx.collections.immutable"
     )
 
@@ -31,21 +35,23 @@ val packagesToRelocate =
 // But due to the shadow plugin bug (https://github.com/johnrengelman/shadow/issues/262) it is not possible to use
 // packagesToRelocate list to for the include list. Therefore the exclude list has to be created.
 val packagesToExcludeFromDummy =
-        listOf("org/jetbrains/kotlin/**",
-               "org/intellij/lang/annotations/**",
-               "org/jetbrains/jps/**",
-               "META-INF/**",
-               "com/sun/jna/**",
-               "com/thoughtworks/xstream/**",
-               "javaslang/**",
-               "*.proto",
-               "messages/**",
-               "net/sf/cglib/**",
-               "one/util/streamex/**",
-               "org/iq80/snappy/**",
-               "org/jline/**",
-               "org/xmlpull/**",
-               "*.txt")
+    listOf(
+        "org/jetbrains/kotlin/**",
+        "org/intellij/lang/annotations/**",
+        "org/jetbrains/jps/**",
+        "META-INF/**",
+        "com/sun/jna/**",
+        "com/thoughtworks/xstream/**",
+        "javaslang/**",
+        "*.proto",
+        "messages/**",
+        "net/sf/cglib/**",
+        "one/util/streamex/**",
+        "org/iq80/snappy/**",
+        "org/jline/**",
+        "org/xmlpull/**",
+        "*.txt"
+    )
 
 private fun ShadowJar.configureEmbeddableCompilerRelocation(withJavaxInject: Boolean = true) {
     relocate("com.google.protobuf", "org.jetbrains.kotlin.protobuf")
@@ -67,8 +73,8 @@ private fun Project.compilerShadowJar(taskName: String, body: ShadowJar.() -> Un
     dependencies.add(compilerJar.name, dependencies.project(":kotlin-compiler", configuration = "runtimeJar"))
 
     return tasks.register<ShadowJar>(taskName) {
-        destinationDir = File(buildDir, "libs")
-        setDuplicatesStrategy(DuplicatesStrategy.EXCLUDE)
+        destinationDirectory.set(project.file(File(buildDir, "libs")))
+        duplicatesStrategy = DuplicatesStrategy.EXCLUDE
         from(compilerJar)
         body()
     }
@@ -107,8 +113,8 @@ fun Project.embeddableCompilerDummyForDependenciesRewriting(
     )
 
     return tasks.register<ShadowJar>(taskName) {
-        destinationDir = File(buildDir, "libs")
-        setDuplicatesStrategy(DuplicatesStrategy.EXCLUDE)
+        destinationDirectory.set(project.file(File(buildDir, "libs")))
+        duplicatesStrategy = DuplicatesStrategy.EXCLUDE
         from(compilerDummyJar)
         configureEmbeddableCompilerRelocation(withJavaxInject = false)
         body()
@@ -119,7 +125,7 @@ fun Project.rewriteDepsToShadedJar(
     originalJarTask: TaskProvider<out Jar>, shadowJarTask: TaskProvider<out Jar>, body: Jar.() -> Unit = {}
 ): TaskProvider<out Jar> {
     originalJarTask.configure {
-        classifier = "original"
+        archiveClassifier.set("original")
     }
 
     val compilerDummyJarFile by lazy { configurations.getAt("compilerDummyJar").singleFile }
@@ -132,7 +138,7 @@ fun Project.rewriteDepsToShadedJar(
         // which leads to the content of that JAR being excluded as well:
         exclude { it.file == compilerDummyJarFile }
 
-        classifier = ""
+        archiveClassifier.set("original")
         body()
     }
     return shadowJarTask

buildSrc/src/main/kotlin/jdksFinder.kt

@@ -101,8 +101,12 @@ fun MutableCollection<JdkId>.discoverJdks(project: Project) {
     }
 }
 
-private val macOsJavaHomeOutRegexes = listOf(Regex("""\s+(\S+),\s+(\S+):\s+".*?"\s+(.+)"""),
-                                             Regex("""\s+(\S+)\s+\((.*?)\):\s+(.+)"""))
+private val macOsJavaHomeOutRegexes =
+    listOf(
+        Regex("""\s+(\S+),\s+(\S+):\s+".*?"\s+(.+)"""),
+        Regex("""\s+(\S+)\s+\((.*?)\):\s+(.+)"""),
+        Regex("""\s+(\S+)\s+\((.*?)\)\s+"[^"]*"\s+-\s+"[^"]*"\s(.+)""")
+)
 
 fun MutableCollection<JdkId>.discoverJdksOnMacOS(project: Project) {
     val procBuilder = ProcessBuilder("/usr/libexec/java_home", "-V").redirectErrorStream(true)

buildSrc/src/main/kotlin/localDependencies.kt

@@ -132,12 +132,10 @@ object IntellijRootUtils {
     }
 }
 
-fun ModuleDependency.includeIntellijCoreJarDependencies(project: Project) =
-    includeJars(*(project.rootProject.extra["IntellijCoreDependencies"] as List<String>).toTypedArray(), rootProject = project.rootProject)
-
-fun ModuleDependency.includeIntellijCoreJarDependencies(project: Project, jarsFilterPredicate: (String) -> Boolean) =
+@Suppress("UNCHECKED_CAST")
+fun ModuleDependency.includeIntellijCoreJarDependencies(project: Project, jarsFilterPredicate: (String) -> Boolean = { true }): Unit =
     includeJars(
-        *(project.rootProject.extra["IntellijCoreDependencies"] as List<String>).filter { jarsFilterPredicate(it) }.toTypedArray(),
+        *(project.rootProject.extra["IntellijCoreDependencies"] as List<String>).filter(jarsFilterPredicate).toTypedArray(),
         rootProject = project.rootProject
     )
 
@@ -180,6 +178,7 @@ fun Project.runIdeTask(name: String, ideaPluginDir: File, ideaSandboxDir: File,
             "-Didea.system.path=$ideaSandboxDir",
             "-Didea.config.path=$ideaSandboxConfigDir",
             "-Didea.tooling.debug=true",
+            "-Dfus.internal.test.mode=true",
             "-Dapple.laf.useScreenMenuBar=true",
             "-Dapple.awt.graphics.UseQuartz=true",
             "-Dsun.io.useCanonCaches=false",

buildSrc/src/main/kotlin/pluginMarkers.kt

@@ -18,8 +18,12 @@ import java.util.*
 
 internal const val PLUGIN_MARKER_SUFFIX = ".gradle.plugin"
 
-@UseExperimental(ExperimentalStdlibApi::class)
+@OptIn(ExperimentalStdlibApi::class)
 fun Project.publishPluginMarkers(withEmptyJars: Boolean = true) {
+
+    fun Project.isSonatypePublish(): Boolean =
+        hasProperty("isSonatypePublish") && property("isSonatypePublish") as Boolean
+
     val pluginDevelopment = extensions.getByType<PluginBundleExtension>()
     val publishingExtension = extensions.getByType<PublishingExtension>()
     val mainPublication = publishingExtension.publications[KotlinBuildPublishingPlugin.PUBLICATION_NAME] as MavenPublication
@@ -32,7 +36,12 @@ fun Project.publishPluginMarkers(withEmptyJars: Boolean = true) {
 
         tasks.named<PublishToMavenRepository>(
             "publish${markerPublication.name.capitalize(Locale.ROOT)}PublicationTo${KotlinBuildPublishingPlugin.REPOSITORY_NAME}Repository"
-        ).configureRepository()
+        ).apply {
+            configureRepository()
+            configure {
+                onlyIf { !isSonatypePublish() }
+            }
+        }
     }
 }
 

buildSrc/src/main/kotlin/plugins/DexMethodCount.kt

@@ -41,7 +41,7 @@ open class DexMethodCount : DefaultTask() {
         dependsOn(jar)
     }
 
-    @Internal // plain output properties are not supported, mark as internal to suppress warning from validateTaskProperties
+    @Internal // plain output properties are not supported, mark as internal to suppress warning from validatePlugins
     lateinit var counts: Counts
 
     @get:OutputFile

buildSrc/src/main/kotlin/plugins/KotlinBuildPublishingPlugin.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * 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.
  */
 
@@ -8,7 +8,6 @@ package plugins
 import org.gradle.api.Plugin
 import org.gradle.api.Project
 import org.gradle.api.attributes.Usage
-import org.gradle.api.component.AdhocComponentWithVariants
 import org.gradle.api.component.SoftwareComponentFactory
 import org.gradle.api.plugins.JavaBasePlugin
 import org.gradle.api.publish.PublishingExtension
@@ -17,13 +16,12 @@ import org.gradle.api.publish.maven.plugins.MavenPublishPlugin
 import org.gradle.api.publish.maven.tasks.PublishToMavenRepository
 import org.gradle.api.tasks.TaskProvider
 import org.gradle.kotlin.dsl.*
+import org.gradle.plugins.signing.Sign
 import org.gradle.plugins.signing.SigningExtension
 import org.gradle.plugins.signing.SigningPlugin
-import java.net.URI
 import java.util.*
 import javax.inject.Inject
 
-
 class KotlinBuildPublishingPlugin @Inject constructor(
     private val componentFactory: SoftwareComponentFactory
 ) : Plugin<Project> {
@@ -47,7 +45,7 @@ class KotlinBuildPublishingPlugin @Inject constructor(
             }
         }
 
-        val kotlinLibraryComponent = componentFactory.adhoc(ADHOC_COMPONENT_NAME) as AdhocComponentWithVariants
+        val kotlinLibraryComponent = componentFactory.adhoc(ADHOC_COMPONENT_NAME)
         components.add(kotlinLibraryComponent)
         kotlinLibraryComponent.addVariantsFromConfiguration(publishedCompile) { mapToMavenScope("compile") }
         kotlinLibraryComponent.addVariantsFromConfiguration(publishedRuntime) { mapToMavenScope("runtime") }
@@ -73,56 +71,11 @@ class KotlinBuildPublishingPlugin @Inject constructor(
                 create<MavenPublication>(PUBLICATION_NAME) {
                     from(kotlinLibraryComponent)
 
-                    pom {
-                        packaging = "jar"
-                        name.set(humanReadableName(project))
-                        description.set(project.description ?: humanReadableName(project))
-                        url.set("https://kotlinlang.org/")
-                        licenses {
-                            license {
-                                name.set("The Apache License, Version 2.0")
-                                url.set("http://www.apache.org/licenses/LICENSE-2.0.txt")
-                            }
-                        }
-                        scm {
-                            url.set("https://github.com/JetBrains/kotlin")
-                            connection.set("scm:git:https://github.com/JetBrains/kotlin.git")
-                            developerConnection.set("scm:git:https://github.com/JetBrains/kotlin.git")
-                        }
-                        developers {
-                            developer {
-                                name.set("Kotlin Team")
-                                organization.set("JetBrains")
-                                organizationUrl.set("https://www.jetbrains.com")
-                            }
-                        }
-                    }
-                }
-            }
-
-            repositories {
-                maven {
-                    name = REPOSITORY_NAME
-                    url = file("${project.rootDir}/build/repo").toURI()
+                    configureKotlinPomAttributes(project)
                 }
             }
         }
-
-        configure<SigningExtension> {
-            setRequired(provider {
-                project.findProperty("signingRequired")?.toString()?.toBoolean()
-                    ?: project.property("isSonatypeRelease") as Boolean
-            })
-
-            sign(extensions.getByType<PublishingExtension>().publications[PUBLICATION_NAME])
-        }
-
-        tasks.register("install") {
-            dependsOn(tasks.named("publishToMavenLocal"))
-        }
-
-        tasks.named<PublishToMavenRepository>("publish${PUBLICATION_NAME}PublicationTo${REPOSITORY_NAME}Repository")
-            .configureRepository()
+        configureDefaultPublishing()
     }
 
     companion object {
@@ -133,13 +86,84 @@ class KotlinBuildPublishingPlugin @Inject constructor(
         const val COMPILE_CONFIGURATION = "publishedCompile"
         const val RUNTIME_CONFIGURATION = "publishedRuntime"
 
-        @UseExperimental(ExperimentalStdlibApi::class)
-        fun humanReadableName(project: Project) =
-            project.name.split("-").joinToString(separator = " ") { it.capitalize(Locale.ROOT) }
     }
 }
 
-fun TaskProvider<PublishToMavenRepository>.configureRepository() = configure {
+@OptIn(ExperimentalStdlibApi::class)
+private fun humanReadableName(name: String) =
+    name.split("-").joinToString(separator = " ") { it.capitalize(Locale.ROOT) }
+
+fun MavenPublication.configureKotlinPomAttributes(project: Project, explicitDescription: String? = null) {
+    val publication = this
+    pom {
+        packaging = "jar"
+        name.set(humanReadableName(publication.artifactId))
+        description.set(explicitDescription ?: project.description ?: humanReadableName(publication.artifactId))
+        url.set("https://kotlinlang.org/")
+        licenses {
+            license {
+                name.set("The Apache License, Version 2.0")
+                url.set("http://www.apache.org/licenses/LICENSE-2.0.txt")
+            }
+        }
+        scm {
+            url.set("https://github.com/JetBrains/kotlin")
+            connection.set("scm:git:https://github.com/JetBrains/kotlin.git")
+            developerConnection.set("scm:git:https://github.com/JetBrains/kotlin.git")
+        }
+        developers {
+            developer {
+                name.set("Kotlin Team")
+                organization.set("JetBrains")
+                organizationUrl.set("https://www.jetbrains.com")
+            }
+        }
+    }
+}
+
+
+fun Project.configureDefaultPublishing() {
+    configure<PublishingExtension> {
+        repositories {
+            maven {
+                name = KotlinBuildPublishingPlugin.REPOSITORY_NAME
+                url = file("${project.rootDir}/build/repo").toURI()
+            }
+        }
+    }
+
+    configureSigning()
+
+    tasks.register("install") {
+        dependsOn(tasks.named("publishToMavenLocal"))
+    }
+
+    tasks.withType<PublishToMavenRepository>()
+        .matching { it.name.endsWith("PublicationTo${KotlinBuildPublishingPlugin.REPOSITORY_NAME}Repository") }
+        .all { configureRepository() }
+}
+
+private fun Project.configureSigning() {
+    val signingRequired = provider {
+        project.findProperty("signingRequired")?.toString()?.toBoolean()
+            ?: project.property("isSonatypeRelease") as Boolean
+    }
+
+    configure<SigningExtension> {
+        setRequired(signingRequired)
+        sign(extensions.getByType<PublishingExtension>().publications) // all publications
+        useGpgCmd()
+    }
+
+    tasks.withType<Sign>().configureEach {
+        setOnlyIf { signingRequired.get() }
+    }
+}
+
+fun TaskProvider<PublishToMavenRepository>.configureRepository() =
+    configure { configureRepository() }
+
+private fun PublishToMavenRepository.configureRepository() {
     dependsOn(project.rootProject.tasks.named("preparePublication"))
     doFirst {
         val preparePublication = project.rootProject.tasks.named("preparePublication").get()
@@ -157,4 +181,4 @@ fun TaskProvider<PublishToMavenRepository>.configureRepository() = configure {
             }
         }
     }
-}
+}

buildSrc/src/main/kotlin/plugins/PublishedKotlinModule.kt

@@ -1,3 +1,4 @@
+@file:Suppress("DEPRECATION")
 package plugins
 
 import org.codehaus.groovy.runtime.InvokerHelper
@@ -16,10 +17,8 @@ import org.gradle.plugins.signing.Sign
 import org.gradle.plugins.signing.SigningExtension
 import kotlin.properties.Delegates
 
-
 /**
  * Configures a Kotlin module for publication.
- *
  */
 open class PublishedKotlinModule : Plugin<Project> {
 

buildSrc/src/main/kotlin/sourceSets.kt

@@ -30,6 +30,7 @@ val SourceSet.projectDefault: Project.() -> Unit
             }
             "test" -> {
                 java.srcDirs("test", "tests")
+                this@projectDefault.resources.srcDir("testResources")
             }
         }
     }

buildSrc/src/main/kotlin/tasks.kt

@@ -1,17 +1,6 @@
 /*
- * Copyright 2010-2017 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * 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.
  */
 
 
@@ -37,6 +26,7 @@ fun Task.dependsOnKotlinPluginInstall() {
         ":kotlin-noarg:install",
         ":kotlin-sam-with-receiver:install",
         ":kotlin-android-extensions:install",
+        ":kotlin-parcelize-compiler:install",
         ":kotlin-build-common:install",
         ":kotlin-compiler-embeddable:install",
         ":native:kotlin-native-utils:install",
@@ -50,11 +40,7 @@ fun Task.dependsOnKotlinPluginInstall() {
         ":kotlin-gradle-plugin-model:install",
         ":kotlin-reflect:install",
         ":kotlin-annotation-processing-gradle:install",
-        ":kotlin-test:kotlin-test-common:install",
-        ":kotlin-test:kotlin-test-annotations-common:install",
-        ":kotlin-test:kotlin-test-jvm:install",
-        ":kotlin-test:kotlin-test-js:install",
-        ":kotlin-test:kotlin-test-junit:install",
+        ":kotlin-test:install",
         ":kotlin-gradle-subplugin-example:install",
         ":kotlin-stdlib-common:install",
         ":kotlin-stdlib:install",
@@ -75,6 +61,7 @@ fun Project.projectTest(
     taskName: String = "test",
     parallel: Boolean = false,
     shortenTempRootName: Boolean = false,
+    jUnit5Enabled: Boolean = false,
     body: Test.() -> Unit = {}
 ): TaskProvider<Test> = getOrCreateTask(taskName) {
     doFirst {
@@ -108,12 +95,29 @@ fun Project.projectTest(
                 }
             }
 
-            include {
-                val path = it.path
-                if (it.isDirectory) {
+            val parentNames = if (jUnit5Enabled) {
+                /*
+                 * If we run test from inner test class with junit 5 we need
+                 *   to include all containing classes of our class
+                 */
+                val nestedNames = classFileNameWithoutExtension.split("$")
+                mutableListOf(nestedNames.first()).also {
+                    for (s in nestedNames.subList(1, nestedNames.size)) {
+                        it += "${it.last()}\$$s"
+                    }
+                }
+            } else emptyList()
+
+            include { treeElement ->
+                val path = treeElement.path
+                if (treeElement.isDirectory) {
                     classFileNameWithoutExtension.startsWith(path)
                 } else {
-                    path == classFileName || (path.endsWith(".class") && path.startsWith("$classFileNameWithoutExtension$"))
+                    if (jUnit5Enabled) {
+                        path == classFileName || (path.endsWith(".class") && parentNames.any { path.startsWith(it) })
+                    } else {
+                        path == classFileName || (path.endsWith(".class") && path.startsWith("$classFileNameWithoutExtension$"))
+                    }
                 }
             }
         }
@@ -153,7 +157,7 @@ fun Project.projectTest(
 
     var subProjectTempRoot: Path? = null
     doFirst {
-        val teamcity = rootProject.findProperty("teamcity") as? Map<Any?, *>
+        val teamcity = rootProject.findProperty("teamcity") as? Map<*, *>
         val systemTempRoot =
             // TC by default doesn't switch `teamcity.build.tempDir` to 'java.io.tmpdir' so it could cause to wasted disk space
             // Should be fixed soon on Teamcity side
@@ -179,7 +183,7 @@ fun Project.projectTest(
     if (parallel) {
         maxParallelForks =
             project.findProperty("kotlin.test.maxParallelForks")?.toString()?.toInt()
-                ?: Math.max(Runtime.getRuntime().availableProcessors() / if (kotlinBuildProperties.isTeamcityBuild) 2 else 4, 1)
+                ?: (Runtime.getRuntime().availableProcessors() / if (kotlinBuildProperties.isTeamcityBuild) 2 else 4).coerceAtLeast(1)
     }
     body()
 }

buildSrc/src/main/kotlin/testDistribution.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2010-2020 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.
+ */
+
+import com.gradle.enterprise.gradleplugin.testdistribution.TestDistributionExtension
+import org.gradle.api.tasks.testing.Test
+import org.gradle.internal.os.OperatingSystem
+
+
+fun Test.configureTestDistribution(configure: TestDistributionExtension.() -> Unit = {}) {
+    val isTeamcityBuild = project.kotlinBuildProperties.isTeamcityBuild
+    val testDistributionEnabled = project.findProperty("kotlin.build.test.distribution.enabled")?.toString()?.toBoolean()
+        ?: isTeamcityBuild
+
+    useJUnitPlatform()
+    extensions.configure(TestDistributionExtension::class.java) {
+        enabled.set(testDistributionEnabled)
+        maxRemoteExecutors.set(20)
+        if (isTeamcityBuild) {
+            requirements.set(setOf("os=${OperatingSystem.current().familyName}"))
+        } else {
+            maxLocalExecutors.set(0)
+        }
+        configure()
+    }
+}
+
+fun Test.isTestDistributionEnabled(): Boolean =
+    extensions.findByType(TestDistributionExtension::class.java)?.enabled?.orNull ?: false

compiler/android-tests/android-module/build.gradle

@@ -1,14 +1,11 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
-ext {
-    isD8Enabled = project.findProperty('android.enableD8').toBoolean()
-}
 buildscript {
     repositories {
         google()
         jcenter()
     }
     dependencies {        
-        classpath 'com.android.tools.build:gradle:3.5.3'
+        classpath 'com.android.tools.build:gradle:4.1.1'
     }
 }
 apply plugin: 'com.android.application'
@@ -20,7 +17,7 @@ repositories {
 
 android {
     compileSdkVersion 26
-    buildToolsVersion "28.0.3"
+    buildToolsVersion "29.0.3"
 
     defaultConfig {
         applicationId "org.jetbrains.kotlin.android.tests"
@@ -60,11 +57,9 @@ android {
         resultsDir = "build/test/results"
     }
 
-    if (isD8Enabled) {
-        compileOptions {
-            sourceCompatibility = 1.8
-            targetCompatibility = 1.8
-        }
+    compileOptions {
+        sourceCompatibility = 1.8
+        targetCompatibility = 1.8
     }
 
     flavorDimensions "box"
@@ -86,15 +81,12 @@ android {
             dimension "box"
         }
 
+        jvm80 {
+            dimension "box"
+        }
 
-        if (isD8Enabled) {
-            jvm80 {
-                dimension "box"
-            }
-
-            reflectjvm80 {
-                dimension "box"
-            }
+        reflectjvm80 {
+            dimension "box"
         }
     }
 

compiler/android-tests/android-module/gradle.properties

@@ -1,3 +1,2 @@
 #don't try to download android specific tools within gradle: licence acceptance will be required
-android.builder.sdkDownload=false
-android.enableD8=true
+android.builder.sdkDownload=false

compiler/android-tests/build.gradle.kts

@@ -6,25 +6,27 @@ plugins {
 }
 
 dependencies {
-    compile(project(":compiler:util"))
-    compile(project(":compiler:cli"))
-    compile(project(":compiler:frontend"))
-    compile(project(":compiler:backend"))
-    compile(kotlinStdlib())
-    compile(project(":kotlin-reflect"))
-    compile(projectTests(":compiler:tests-common"))
-    compile(commonDep("junit:junit"))
-
-    Platform[193].orLower {
-        compileOnly(intellijDep()) { includeJars("openapi") }
-    }
-
-    testCompile(project(":compiler:incremental-compilation-impl"))
     testCompile(project(":core:descriptors"))
     testCompile(project(":core:descriptors.jvm"))
+    testCompile(project(":compiler:util"))
+    testCompile(project(":compiler:cli"))
+    testCompile(project(":compiler:frontend"))
+    testCompile(project(":compiler:backend"))
+    testCompile(project(":compiler:incremental-compilation-impl"))
     testCompile(project(":compiler:frontend.java"))
+
+    testCompile(kotlinStdlib())
+    testCompile(project(":kotlin-reflect"))
+    testCompile(projectTests(":compiler:tests-common"))
+    testCompile(commonDep("junit:junit"))
+    testApi(projectTests(":compiler:test-infrastructure"))
+    testApi(projectTests(":compiler:test-infrastructure-utils"))
+    testApi(projectTests(":compiler:tests-compiler-utils"))
+    testApi(projectTests(":compiler:tests-common-new"))
+
     testCompile(projectTests(":jps-plugin"))
     testCompile(commonDep("junit:junit"))
+
     Platform[193].orLower {
         testCompile(intellijDep()) { includeJars("openapi", rootProject = rootProject) }
     }
@@ -36,15 +38,15 @@ dependencies {
     Platform[201].orLower {
         testCompile(intellijDep()) { includeJars("groovy-all", rootProject = rootProject) }
     }
-    Platform[192].orHigher {
-        testCompile(intellijPluginDep("java")) { includeJars("jps-builders") }
-    }
+    testCompile(intellijPluginDep("java")) { includeJars("jps-builders") }
     testCompile(jpsStandalone()) { includeJars("jps-model") }
     testCompile(jpsBuildTest())
+
+    testCompile("org.junit.platform:junit-platform-launcher:${commonVer("org.junit.platform", "")}")
 }
 
 sourceSets {
-    "main" { projectDefault() }
+    "main" { }
     "test" { projectDefault() }
 }
 

compiler/android-tests/tests/org/jetbrains/kotlin/android/tests/AndroidRunner.java

@@ -25,7 +25,7 @@ import org.junit.runners.AllTests;
 
 import java.io.File;
 
-//@RunWith(AllTests.class)
+@RunWith(AllTests.class)
 public class AndroidRunner {
 
     private static PathManager pathManager;

compiler/android-tests/tests/org/jetbrains/kotlin/android/tests/AndroidTestGenerator.kt

@@ -20,7 +20,9 @@ import com.intellij.openapi.util.Ref
 import org.jetbrains.kotlin.load.kotlin.PackagePartClassUtils
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
-import org.jetbrains.kotlin.test.KotlinBaseTest
+import org.jetbrains.kotlin.test.model.TestModule
+import org.jetbrains.kotlin.test.services.TestServices
+import org.jetbrains.kotlin.test.services.sourceFileProvider
 import java.io.File
 import java.util.regex.Pattern
 
@@ -34,28 +36,24 @@ private data class OldPackageAndNew(val oldFqName: FqName, val newFqName: FqName
 
 internal fun patchFilesAndAddTest(
     testFile: File,
-    testFiles: List<KotlinBaseTest.TestFile>,
+    module: TestModule,
+    services: TestServices,
     filesHolder: CodegenTestsOnAndroidGenerator.FilesWriter
-): FqName? {
-    if (testFiles.any { it.name.endsWith(".java") }) {
-        //TODO support java files
-        return null
-    }
-    val ktFiles = testFiles.filter { it.name.endsWith(".kt") }
-    if (ktFiles.isEmpty()) return null
-
+): FqName {
     val newPackagePrefix = testFile.path.replace("\\\\|-|\\.|/".toRegex(), "_")
     val oldPackage = Ref<FqName>()
     val isJvmName = Ref<Boolean>(false)
+    val testFiles = module.files
     val isSingle = testFiles.size == 1
     val resultFiles = testFiles.map {
         val fileName = if (isSingle) it.name else testFile.name.substringBeforeLast(".kt") + "/" + it.name
+        val content = services.sourceFileProvider.getContentOfSourceFile(it)
         TestClassInfo(
             fileName,
-            changePackage(newPackagePrefix, it.content, oldPackage, isJvmName),
+            changePackage(newPackagePrefix, content, oldPackage, isJvmName),
             oldPackage.get(),
             isJvmName.get(),
-            getGeneratedClassName(File(fileName), it.content, newPackagePrefix, oldPackage.get())
+            getGeneratedClassName(File(fileName), content, newPackagePrefix, oldPackage.get())
         )
     }
     val packages =

compiler/android-tests/tests/org/jetbrains/kotlin/android/tests/CodegenTestsOnAndroidGenerator.kt

@@ -5,7 +5,6 @@
 
 package org.jetbrains.kotlin.android.tests
 
-import com.intellij.openapi.Disposable
 import com.intellij.openapi.util.Disposer
 import com.intellij.openapi.util.SystemInfo
 import com.intellij.openapi.util.io.FileUtil
@@ -17,16 +16,33 @@ import org.jetbrains.kotlin.codegen.CodegenTestCase
 import org.jetbrains.kotlin.codegen.CodegenTestFiles
 import org.jetbrains.kotlin.codegen.GenerationUtils
 import org.jetbrains.kotlin.codegen.forTestCompile.ForTestCompileRuntime
-import org.jetbrains.kotlin.config.CommonConfigurationKeys
-import org.jetbrains.kotlin.config.CompilerConfiguration
-import org.jetbrains.kotlin.config.JvmTarget
+import org.jetbrains.kotlin.config.*
 import org.jetbrains.kotlin.idea.KotlinFileType
+import org.jetbrains.kotlin.platform.jvm.JvmPlatforms
 import org.jetbrains.kotlin.psi.KtFile
 import org.jetbrains.kotlin.test.*
+import org.jetbrains.kotlin.test.builders.TestConfigurationBuilder
+import org.jetbrains.kotlin.test.directives.JvmEnvironmentConfigurationDirectives
+import org.jetbrains.kotlin.test.directives.model.singleOrZeroValue
+import org.jetbrains.kotlin.test.model.DependencyKind
+import org.jetbrains.kotlin.test.model.FrontendKinds
+import org.jetbrains.kotlin.test.runners.AbstractKotlinCompilerTest
+import org.jetbrains.kotlin.test.services.*
+import org.jetbrains.kotlin.test.services.configuration.CommonEnvironmentConfigurator
+import org.jetbrains.kotlin.test.services.configuration.JvmEnvironmentConfigurator
+import org.jetbrains.kotlin.test.services.impl.BackendKindExtractorImpl
+import org.jetbrains.kotlin.test.services.impl.TemporaryDirectoryManagerImpl
+import org.jetbrains.kotlin.test.services.sourceProviders.AdditionalDiagnosticsSourceFilesProvider
+import org.jetbrains.kotlin.test.services.sourceProviders.CodegenHelpersSourceFilesProvider
+import org.jetbrains.kotlin.test.services.sourceProviders.CoroutineHelpersSourceFilesProvider
+import org.jetbrains.kotlin.test.util.KtTestUtil
 import org.junit.Assert
 import java.io.File
 import java.io.FileWriter
 import java.io.IOException
+import kotlin.io.path.ExperimentalPathApi
+import kotlin.io.path.Path
+import kotlin.io.path.createTempDirectory
 import kotlin.test.assertTrue
 
 data class ConfigurationKey(val kind: ConfigurationKind, val jdkKind: TestJdkKind, val configuration: String)
@@ -238,6 +254,7 @@ class CodegenTestsOnAndroidGenerator private constructor(private val pathManager
         }
     }
 
+    @OptIn(TestInfrastructureInternals::class)
     @Throws(IOException::class)
     private fun processFiles(
         files: Array<File>,
@@ -266,8 +283,7 @@ class CodegenTestsOnAndroidGenerator private constructor(private val pathManager
                     continue
                 }
 
-                val fullFileText =
-                    FileUtil.loadFile(file, true).replace("COROUTINES_PACKAGE", "kotlin.coroutines")
+                val fullFileText = FileUtil.loadFile(file, true)
 
                 if (fullFileText.contains("// WITH_COROUTINES")) {
                     if (fullFileText.contains("kotlin.coroutines.experimental")) continue
@@ -277,7 +293,8 @@ class CodegenTestsOnAndroidGenerator private constructor(private val pathManager
                 //TODO support JvmPackageName
                 if (fullFileText.contains("@file:JvmPackageName(")) continue
                 // TODO: Support jvm assertions
-                if (fullFileText.contains("// KOTLIN_CONFIGURATION_FLAGS: ASSERTIONS_MODE=jvm")) continue
+                if (fullFileText.contains("// ASSERTIONS_MODE: jvm")) continue
+                if (fullFileText.contains("// MODULE: ")) continue
                 val targets = InTextDirectivesUtils.findLinesWithPrefixesRemoved(fullFileText, "// JVM_TARGET:")
                     .also { it.remove(JvmTarget.JVM_1_6.description) }
 
@@ -290,35 +307,96 @@ class CodegenTestsOnAndroidGenerator private constructor(private val pathManager
                 if (fullFileText.contains("// SKIP_JDK6")) continue
 
                 if (hasBoxMethod(fullFileText)) {
-                    val testFiles = createTestFiles(file, fullFileText)
-                    val kind = KotlinBaseTest.extractConfigurationKind(testFiles)
-                    val jdkKind = KotlinBaseTest.getTestJdkKind(testFiles)
+                    val testConfiguration = createTestConfiguration(file)
+                    val services = testConfiguration.testServices
+
+                    val moduleStructure = try {
+                        testConfiguration.moduleStructureExtractor.splitTestDataByModules(
+                            file.path,
+                            testConfiguration.directives,
+                        ).also {
+                            services.register(TestModuleStructure::class, it)
+                        }
+                    } catch (e: ExceptionFromModuleStructureTransformer) {
+                        continue
+                    }
+                    val module = moduleStructure.modules.singleOrNull() ?: continue
+                    if (module.files.any { it.isJavaFile || it.isKtsFile }) continue
+                    if (module.files.isEmpty()) continue
+                    services.registerDependencyProvider(DependencyProviderImpl(services, moduleStructure.modules))
+
                     val keyConfiguration = CompilerConfiguration()
-                    KotlinBaseTest.updateConfigurationByDirectivesInTestFiles(testFiles, keyConfiguration)
+                    val configuratorForFlags = JvmEnvironmentConfigurator(services)
+                    with(configuratorForFlags) {
+                        val extractor = DirectiveToConfigurationKeyExtractor()
+                        extractor.provideConfigurationKeys()
+                        extractor.configure(keyConfiguration, module.directives)
+                    }
+                    val kind = configuratorForFlags.extractConfigurationKind(module.directives)
+                    val jdkKind = configuratorForFlags.extractJdkKind(module.directives)
+
+                    keyConfiguration.languageVersionSettings = module.languageVersionSettings
 
                     val key = ConfigurationKey(kind, jdkKind, keyConfiguration.toString())
                     val compiler = if (isJvm8Target) {
                         if (kind.withReflection) JVM8REFLECT else JVM8
                     } else if (kind.withReflection) REFLECT else COMMON
+                    val compilerConfigurationProvider = services.compilerConfigurationProvider as CompilerConfigurationProviderImpl
                     val filesHolder = holders.getOrPut(key) {
-                        FilesWriter(compiler, KotlinTestUtils.newConfiguration(kind, jdkKind, KotlinTestUtils.getAnnotationsJar()).apply {
+                        FilesWriter(compiler, compilerConfigurationProvider.createCompilerConfiguration(module)).also {
                             println("Creating new configuration by $key")
-                            KotlinBaseTest.updateConfigurationByDirectivesInTestFiles(testFiles, this)
-                        })
+                        }
                     }
 
-                    patchFilesAndAddTest(file, testFiles, filesHolder)
+                    patchFilesAndAddTest(file, module, services, filesHolder)
                 }
             }
         }
     }
 
+    private fun createTestConfiguration(testDataFile: File): TestConfiguration {
+        return TestConfigurationBuilder().apply {
+            testConfiguration()
+            testInfo = KotlinTestInfo(
+                "org.jetbrains.kotlin.android.tests.AndroidRunner",
+                "test${testDataFile.nameWithoutExtension.capitalize()}",
+                emptySet()
+            )
+        }.build(testDataFile.path)
+    }
+
+    private val testConfiguration: TestConfigurationBuilder.() -> Unit = {
+        globalDefaults {
+            frontend = FrontendKinds.ClassicFrontend
+            targetBackend = TargetBackend.ANDROID
+            targetPlatform = JvmPlatforms.defaultJvmPlatform
+            dependencyKind = DependencyKind.Binary
+        }
+
+        useConfigurators(
+            ::CommonEnvironmentConfigurator,
+            ::JvmEnvironmentConfigurator
+        )
+
+        useAdditionalSourceProviders(
+            ::AdditionalDiagnosticsSourceFilesProvider,
+            ::CoroutineHelpersSourceFilesProvider,
+            ::CodegenHelpersSourceFilesProvider,
+        )
+
+        assertions = JUnit5Assertions
+        useAdditionalService<TemporaryDirectoryManager>(::TemporaryDirectoryManagerImpl)
+        useAdditionalService<BackendKindExtractor>(::BackendKindExtractorImpl)
+        useSourcePreprocessor(*AbstractKotlinCompilerTest.defaultPreprocessors.toTypedArray())
+        useDirectives(*AbstractKotlinCompilerTest.defaultDirectiveContainers.toTypedArray())
+    }
+
     private fun createTestFiles(file: File, expectedText: String): List<KotlinBaseTest.TestFile> =
-        CodegenTestCase.createTestFilesFromFile(file, expectedText, "kotlin.coroutines", false, TargetBackend.JVM)
+        CodegenTestCase.createTestFilesFromFile(file, expectedText, false, TargetBackend.JVM)
 
     companion object {
-        const val GRADLE_VERSION = "5.6.4" // update GRADLE_SHA_256 on change
-        const val GRADLE_SHA_256 = "1f3067073041bc44554d0efe5d402a33bc3d3c93cc39ab684f308586d732a80d"
+        const val GRADLE_VERSION = "6.8.1" // update GRADLE_SHA_256 on change
+        const val GRADLE_SHA_256 = "fd591a34af7385730970399f473afabdb8b28d57fd97d6625c388d090039d6fd"
         const val testClassPackage = "org.jetbrains.kotlin.android.tests"
         const val testClassName = "CodegenTestCaseOnAndroid"
         const val baseTestClassPackage = "org.jetbrains.kotlin.android.tests"
@@ -339,20 +417,21 @@ class CodegenTestsOnAndroidGenerator private constructor(private val pathManager
 
         @Throws(IOException::class)
         internal fun writeAndroidSkdToLocalProperties(pathManager: PathManager) {
-            val sdkRoot = KotlinTestUtils.getAndroidSdkSystemIndependentPath()
+            val sdkRoot = KtTestUtil.getAndroidSdkSystemIndependentPath()
             println("Writing android sdk to local.properties: $sdkRoot")
             val file = File(pathManager.tmpFolder + "/local.properties")
             FileWriter(file).use { fw -> fw.write("sdk.dir=$sdkRoot") }
         }
 
+        @OptIn(ExperimentalPathApi::class)
         @JvmStatic
         fun main(args: Array<String>) {
-            val tmpFolder = createTempDir()
-            println("Created temporary folder for android tests: " + tmpFolder.absolutePath)
-            val rootFolder = File("")
-            val pathManager = PathManager(rootFolder.absolutePath, tmpFolder.absolutePath)
+            val tmpFolder = createTempDirectory().toAbsolutePath().toString()
+            println("Created temporary folder for android tests: $tmpFolder")
+            val rootFolder = Path("").toAbsolutePath().toString()
+            val pathManager = PathManager(rootFolder, tmpFolder)
             generate(pathManager, true)
-            println("Android test project is generated into " + tmpFolder.absolutePath + " folder")
+            println("Android test project is generated into $tmpFolder folder")
         }
     }
 }

compiler/android-tests/tests/org/jetbrains/kotlin/android/tests/CodegenTestsOnAndroidRunner.kt

@@ -55,16 +55,6 @@ class CodegenTestsOnAndroidRunner private constructor(private val pathManager: P
                 runTestsOnEmulator(gradleRunner, TestSuite("D8")).apply {
                     rootSuite.addTest(this)
                 }
-
-                renameFlavorFolder()
-                enableD8(false)
-                runTestsOnEmulator(gradleRunner, TestSuite("DX")).apply {
-                    (0 until this.countTestCases()).forEach {
-                        val testCase = testAt(it) as TestCase
-                        testCase.name += "_DX"
-                    }
-                    rootSuite.addTest(this)
-                }
             } catch (e: RuntimeException) {
                 e.printStackTrace()
                 throw e
@@ -81,16 +71,6 @@ class CodegenTestsOnAndroidRunner private constructor(private val pathManager: P
         return rootSuite
     }
 
-    private fun enableD8(enable: Boolean) {
-        val file = File(pathManager.androidTmpFolder, "gradle.properties")
-        val lines = file.readLines().map {
-            if (it.startsWith("android.enableD8=")) {
-                "android.enableD8=$enable"
-            } else it
-        }
-        file.writeText(lines.joinToString("\n"))
-    }
-
     private fun processReport(suite: TestSuite, resultOutput: String) {
         val reportFolder = File(flavorFolder())
         try {
@@ -160,7 +140,6 @@ class CodegenTestsOnAndroidRunner private constructor(private val pathManager: P
                 val item = testCases.item(i) as Element
                 val failure = item.getElementsByTagName("failure")
                 val name = item.getAttribute("name")
-                val clazz = item.getAttribute("classname")
 
                 if (failure.length == 0) {
                     object : TestCase(name) {

compiler/android-tests/tests/org/jetbrains/kotlin/android/tests/PathManager.java

@@ -16,7 +16,7 @@
 
 package org.jetbrains.kotlin.android.tests;
 
-import org.jetbrains.kotlin.test.KotlinTestUtils;
+import org.jetbrains.kotlin.test.util.KtTestUtil;
 
 import java.io.File;
 
@@ -69,7 +69,7 @@ public class PathManager {
     }
 
     public String getAndroidSdkRoot() {
-        return KotlinTestUtils.getAndroidSdkSystemIndependentPath();
+        return KtTestUtil.getAndroidSdkSystemIndependentPath();
     }
 
     public String getAndroidModuleRoot() {

compiler/android-tests/tests/org/jetbrains/kotlin/android/tests/emulator/Emulator.java

@@ -121,8 +121,11 @@ public class Emulator {
 
     public void startEmulator() {
         startServer();
-        System.out.println("Starting emulator...");
-        RunUtils.executeOnSeparateThread(new RunUtils.RunSettings(getStartCommand(), null, false, "START: ", true));
+        System.out.println("Starting emulator with ANDROID_HOME/ANDROID_SDK_ROOT: " + pathManager.getAndroidSdkRoot());
+        GeneralCommandLine startCommand = getStartCommand();
+        startCommand.withEnvironment("ANDROID_SDK_ROOT", pathManager.getAndroidSdkRoot());
+        startCommand.withEnvironment("ANDROID_HOME", pathManager.getAndroidSdkRoot());
+        RunUtils.executeOnSeparateThread(new RunUtils.RunSettings(startCommand, null, false, "START: ", true));
         printLog();
     }
 
@@ -144,6 +147,7 @@ public class Emulator {
         bootCheckCommand.addParameter("shell");
         bootCheckCommand.addParameter("getprop");
         bootCheckCommand.addParameter("sys.boot_completed");
+
         int counter = 0;
         RunResult execute = RunUtils.execute(bootCheckCommand);
         while (counter < 20) {

compiler/backend-common/src/org/jetbrains/kotlin/backend/common/BackendException.kt

@@ -0,0 +1,8 @@
+/*
+ * Copyright 2010-2020 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.common
+
+class BackendException(message: String, cause: Throwable?) : IllegalStateException(message, cause)

compiler/backend-common/src/org/jetbrains/kotlin/backend/common/CodegenUtil.kt

@@ -232,12 +232,13 @@ object CodegenUtil {
     }
 
     @JvmStatic
-    fun reportBackendException(exception: Throwable, phase: String, fileUrl: String?): Nothing {
+    fun reportBackendException(exception: Throwable, phase: String, location: String?, additionalMessage: String? = null): Nothing {
         // CompilationException (the only KotlinExceptionWithAttachments possible here) is already supposed
         // to have all information about the context.
         if (exception is KotlinExceptionWithAttachments) throw exception
-        throw IllegalStateException(
-            getExceptionMessage("Backend", "Exception during $phase", exception, fileUrl),
+        throw BackendException(
+            getExceptionMessage("Backend", "Exception during $phase", exception, location) +
+                    additionalMessage?.let { "\n" + it }.orEmpty(),
             exception
         )
     }

compiler/backend.common.jvm/build.gradle.kts

@@ -0,0 +1,15 @@
+plugins {
+    kotlin("jvm")
+    id("jps-compatible")
+}
+
+dependencies {
+    api(project(":core:compiler.common.jvm"))
+    api(project(":compiler:config.jvm"))
+    api(intellijCoreDep()) { includeJars("asm-all", "guava", rootProject = rootProject) }
+}
+
+sourceSets {
+    "main" { projectDefault() }
+    "test" {}
+}

compiler/backend.common.jvm/src/org/jetbrains/kotlin/codegen/AsmUtil.java

@@ -0,0 +1,450 @@
+/*
+ * Copyright 2010-2020 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.codegen;
+
+import com.google.common.collect.ImmutableMap;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import org.jetbrains.kotlin.builtins.PrimitiveType;
+import org.jetbrains.kotlin.descriptors.Visibilities;
+import org.jetbrains.kotlin.descriptors.Visibility;
+import org.jetbrains.kotlin.descriptors.java.JavaVisibilities;
+import org.jetbrains.kotlin.load.java.JvmAnnotationNames;
+import org.jetbrains.kotlin.name.ClassId;
+import org.jetbrains.kotlin.name.FqName;
+import org.jetbrains.kotlin.name.Name;
+import org.jetbrains.kotlin.resolve.jvm.JvmClassName;
+import org.jetbrains.kotlin.resolve.jvm.JvmPrimitiveType;
+import org.jetbrains.org.objectweb.asm.AnnotationVisitor;
+import org.jetbrains.org.objectweb.asm.MethodVisitor;
+import org.jetbrains.org.objectweb.asm.Opcodes;
+import org.jetbrains.org.objectweb.asm.Type;
+import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter;
+import org.jetbrains.org.objectweb.asm.commons.Method;
+
+import java.util.Map;
+
+import static org.jetbrains.kotlin.resolve.jvm.AsmTypes.*;
+import static org.jetbrains.org.objectweb.asm.Opcodes.*;
+
+public class AsmUtil {
+    private static final int NO_FLAG_LOCAL = 0;
+    public static final int NO_FLAG_PACKAGE_PRIVATE = 0;
+
+    @NotNull
+    private static final Map<Visibility, Integer> visibilityToAccessFlag = ImmutableMap.<Visibility, Integer>builder()
+            .put(Visibilities.Private.INSTANCE, ACC_PRIVATE)
+            .put(Visibilities.PrivateToThis.INSTANCE, ACC_PRIVATE)
+            .put(Visibilities.Protected.INSTANCE, ACC_PROTECTED)
+            .put(JavaVisibilities.ProtectedStaticVisibility.INSTANCE, ACC_PROTECTED)
+            .put(JavaVisibilities.ProtectedAndPackage.INSTANCE, ACC_PROTECTED)
+            .put(Visibilities.Public.INSTANCE, ACC_PUBLIC)
+            .put(Visibilities.Internal.INSTANCE, ACC_PUBLIC)
+            .put(Visibilities.Local.INSTANCE, NO_FLAG_LOCAL)
+            .put(JavaVisibilities.PackageVisibility.INSTANCE, NO_FLAG_PACKAGE_PRIVATE)
+            .build();
+
+    public static final String CAPTURED_PREFIX = "$";
+
+    public static final String THIS = "this";
+
+    public static final String THIS_IN_DEFAULT_IMPLS = "$this";
+
+    public static final String LABELED_THIS_FIELD = THIS + "_";
+
+    public static final String CAPTURED_LABELED_THIS_FIELD = CAPTURED_PREFIX + LABELED_THIS_FIELD;
+
+    public static final String INLINE_DECLARATION_SITE_THIS = "this_";
+
+    public static final String LABELED_THIS_PARAMETER = CAPTURED_PREFIX + THIS + "$";
+
+    public static final String CAPTURED_THIS_FIELD = "this$0";
+
+    public static final String RECEIVER_PARAMETER_NAME = "$receiver";
+
+    /*
+        This is basically an old convention. Starting from Kotlin 1.3, it was replaced with `$this_<label>`.
+        Note that it is still used for inlined callable references and anonymous callable extension receivers
+        even in 1.3.
+    */
+    public static final String CAPTURED_RECEIVER_FIELD = "receiver$0";
+
+    // For non-inlined callable references ('kotlin.jvm.internal.CallableReference' has a 'receiver' field)
+    public static final String BOUND_REFERENCE_RECEIVER = "receiver";
+
+    public static final String LOCAL_FUNCTION_VARIABLE_PREFIX = "$fun$";
+
+    private static final ImmutableMap<Integer, JvmPrimitiveType> primitiveTypeByAsmSort;
+    private static final ImmutableMap<Type, Type> primitiveTypeByBoxedType;
+
+    static {
+        ImmutableMap.Builder<Integer, JvmPrimitiveType> typeBySortBuilder = ImmutableMap.builder();
+        ImmutableMap.Builder<Type, Type> typeByWrapperBuilder = ImmutableMap.builder();
+        for (JvmPrimitiveType primitiveType : JvmPrimitiveType.values()) {
+            Type asmType = Type.getType(primitiveType.getDesc());
+            typeBySortBuilder.put(asmType.getSort(), primitiveType);
+            typeByWrapperBuilder.put(asmTypeByFqNameWithoutInnerClasses(primitiveType.getWrapperFqName()), asmType);
+        }
+        primitiveTypeByAsmSort = typeBySortBuilder.build();
+        primitiveTypeByBoxedType = typeByWrapperBuilder.build();
+    }
+
+    private AsmUtil() {
+    }
+
+    @NotNull
+    public static String getCapturedFieldName(@NotNull String originalName) {
+        return CAPTURED_PREFIX + originalName;
+    }
+
+    @NotNull
+    public static String getLabeledThisName(@NotNull String callableName, @NotNull String prefix, @NotNull String defaultName) {
+        if (!Name.isValidIdentifier(callableName)) {
+            return defaultName;
+        }
+
+        return prefix + CommonVariableAsmNameManglingUtils.mangleNameIfNeeded(callableName);
+    }
+
+    @NotNull
+    public static Type boxType(@NotNull Type type) {
+        Type boxedType = boxPrimitiveType(type);
+        return boxedType != null ? boxedType : type;
+    }
+
+    @Nullable
+    public static Type boxPrimitiveType(@NotNull Type type) {
+        JvmPrimitiveType jvmPrimitiveType = primitiveTypeByAsmSort.get(type.getSort());
+        return jvmPrimitiveType != null ? asmTypeByFqNameWithoutInnerClasses(jvmPrimitiveType.getWrapperFqName()) : null;
+    }
+
+    @NotNull
+    public static Type unboxType(@NotNull Type boxedType) {
+        Type primitiveType = unboxPrimitiveTypeOrNull(boxedType);
+        if (primitiveType == null) {
+            throw new UnsupportedOperationException("Unboxing: " + boxedType);
+        }
+        return primitiveType;
+    }
+
+    @Nullable
+    public static Type unboxPrimitiveTypeOrNull(@NotNull Type boxedType) {
+        return primitiveTypeByBoxedType.get(boxedType);
+    }
+
+    public static boolean isBoxedPrimitiveType(@NotNull Type boxedType) {
+        return primitiveTypeByBoxedType.get(boxedType) != null;
+    }
+
+    @NotNull
+    public static Type unboxUnlessPrimitive(@NotNull Type boxedOrPrimitiveType) {
+        if (isPrimitive(boxedOrPrimitiveType)) return boxedOrPrimitiveType;
+        return unboxType(boxedOrPrimitiveType);
+    }
+
+    public static boolean isBoxedTypeOf(@NotNull Type boxedType, @NotNull Type unboxedType) {
+        return unboxPrimitiveTypeOrNull(boxedType) == unboxedType;
+    }
+
+    public static boolean isIntPrimitive(Type type) {
+        return type == Type.INT_TYPE || type == Type.SHORT_TYPE || type == Type.BYTE_TYPE || type == Type.CHAR_TYPE;
+    }
+
+    public static boolean isIntOrLongPrimitive(Type type) {
+        return isIntPrimitive(type) || type == Type.LONG_TYPE;
+    }
+
+    public static boolean isPrimitive(Type type) {
+        return type.getSort() != Type.OBJECT && type.getSort() != Type.ARRAY;
+    }
+
+    @NotNull
+    public static Type correctElementType(@NotNull Type type) {
+        String internalName = type.getInternalName();
+        assert internalName.charAt(0) == '[';
+        return Type.getType(internalName.substring(1));
+    }
+
+    @NotNull
+    public static Type getArrayType(@NotNull Type componentType) {
+        return Type.getType("[" + componentType.getDescriptor());
+    }
+
+    @Nullable
+    public static PrimitiveType asmPrimitiveTypeToLangPrimitiveType(Type type) {
+        JvmPrimitiveType jvmPrimitiveType = primitiveTypeByAsmSort.get(type.getSort());
+        return jvmPrimitiveType != null ? jvmPrimitiveType.getPrimitiveType() : null;
+    }
+
+    @NotNull
+    public static Method method(@NotNull String name, @NotNull Type returnType, @NotNull Type... parameterTypes) {
+        return new Method(name, Type.getMethodDescriptor(returnType, parameterTypes));
+    }
+
+    public static Type stringValueOfType(Type type) {
+        int sort = type.getSort();
+        return sort == Type.OBJECT || sort == Type.ARRAY
+               ? OBJECT_TYPE
+               : sort == Type.BYTE || sort == Type.SHORT ? Type.INT_TYPE : type;
+    }
+
+    public static void genThrow(@NotNull InstructionAdapter v, @NotNull String exception, @Nullable String message) {
+        v.anew(Type.getObjectType(exception));
+        v.dup();
+        if (message != null) {
+            v.aconst(message);
+            v.invokespecial(exception, "<init>", "(Ljava/lang/String;)V", false);
+        }
+        else {
+            v.invokespecial(exception, "<init>", "()V", false);
+        }
+        v.athrow();
+    }
+
+    public static void genStringBuilderConstructor(InstructionAdapter v) {
+        v.visitTypeInsn(NEW, "java/lang/StringBuilder");
+        v.dup();
+        v.invokespecial("java/lang/StringBuilder", "<init>", "()V", false);
+    }
+
+    public static void genInvertBoolean(InstructionAdapter v) {
+        v.iconst(1);
+        v.xor(Type.INT_TYPE);
+    }
+
+    public static void numConst(int value, Type type, InstructionAdapter v) {
+        if (type == Type.FLOAT_TYPE) {
+            v.fconst(value);
+        }
+        else if (type == Type.DOUBLE_TYPE) {
+            v.dconst(value);
+        }
+        else if (type == Type.LONG_TYPE) {
+            v.lconst(value);
+        }
+        else if (type == Type.CHAR_TYPE || type == Type.BYTE_TYPE || type == Type.SHORT_TYPE || type == Type.INT_TYPE) {
+            v.iconst(value);
+        }
+        else {
+            throw new IllegalArgumentException("Primitive numeric type expected, got: " + type);
+        }
+    }
+
+    public static void swap(InstructionAdapter v, Type stackTop, Type afterTop) {
+        if (stackTop.getSize() == 1) {
+            if (afterTop.getSize() == 1) {
+                v.swap();
+            }
+            else {
+                v.dupX2();
+                v.pop();
+            }
+        }
+        else {
+            if (afterTop.getSize() == 1) {
+                v.dup2X1();
+            }
+            else {
+                v.dup2X2();
+            }
+            v.pop2();
+        }
+    }
+
+    public static void pushDefaultValueOnStack(@NotNull Type type, @NotNull InstructionAdapter v) {
+        v.visitInsn(defaultValueOpcode(type));
+    }
+
+    public static int defaultValueOpcode(@NotNull Type type) {
+        if (type.getSort() == Type.OBJECT || type.getSort() == Type.ARRAY) {
+            return ACONST_NULL;
+        }
+        if (type.getSort() == Type.FLOAT) {
+            return FCONST_0;
+        }
+        if (type.getSort() == Type.DOUBLE) {
+            return DCONST_0;
+        }
+        if (type.getSort() == Type.LONG) {
+            return LCONST_0;
+        }
+        return ICONST_0;
+    }
+
+    public static Type comparisonOperandType(Type left, Type right) {
+        if (left == Type.DOUBLE_TYPE || right == Type.DOUBLE_TYPE) return Type.DOUBLE_TYPE;
+        if (left == Type.FLOAT_TYPE || right == Type.FLOAT_TYPE) return Type.FLOAT_TYPE;
+        if (left == Type.LONG_TYPE || right == Type.LONG_TYPE) return Type.LONG_TYPE;
+        if (left == Type.CHAR_TYPE || right == Type.CHAR_TYPE) return Type.CHAR_TYPE;
+        return Type.INT_TYPE;
+    }
+
+    @NotNull
+    public static Type numberFunctionOperandType(@NotNull Type expectedType) {
+        if (expectedType == Type.SHORT_TYPE || expectedType == Type.BYTE_TYPE || expectedType == Type.CHAR_TYPE) {
+            return Type.INT_TYPE;
+        }
+        return expectedType;
+    }
+
+    public static void pop(@NotNull MethodVisitor v, @NotNull Type type) {
+        if (type.getSize() == 2) {
+            v.visitInsn(Opcodes.POP2);
+        }
+        else {
+            v.visitInsn(Opcodes.POP);
+        }
+    }
+
+    public static void pop2(@NotNull MethodVisitor v, @NotNull Type topOfStack, @NotNull Type afterTop) {
+        if (topOfStack.getSize() == 1 && afterTop.getSize() == 1) {
+            v.visitInsn(POP2);
+        } else {
+            pop(v, topOfStack);
+            pop(v, afterTop);
+        }
+    }
+
+    public static void pop2(@NotNull MethodVisitor v, @NotNull Type type) {
+        if (type.getSize() == 2) {
+            v.visitInsn(Opcodes.POP2);
+            v.visitInsn(Opcodes.POP2);
+        }
+        else {
+            v.visitInsn(Opcodes.POP2);
+        }
+    }
+
+    public static void dup(@NotNull InstructionAdapter v, @NotNull Type type) {
+        dup(v, type.getSize());
+    }
+
+    private static void dup(@NotNull InstructionAdapter v, int size) {
+        if (size == 2) {
+            v.dup2();
+        }
+        else if (size == 1) {
+            v.dup();
+        }
+        else {
+            throw new UnsupportedOperationException();
+        }
+    }
+
+    public static void dupx(@NotNull InstructionAdapter v, @NotNull Type type) {
+        dupx(v, type.getSize());
+    }
+
+    private static void dupx(@NotNull InstructionAdapter v, int size) {
+        if (size == 2) {
+            v.dup2X2();
+        }
+        else if (size == 1) {
+            v.dupX1();
+        }
+        else {
+            throw new UnsupportedOperationException();
+        }
+    }
+
+    // Duplicate the element afterTop and push it on the top of the stack.
+    public static void dupSecond(@NotNull InstructionAdapter v, @NotNull Type topOfStack, @NotNull Type afterTop) {
+        if (afterTop.getSize() == 0) {
+            return;
+        }
+
+        if (topOfStack.getSize() == 0) {
+            dup(v, afterTop);
+        } else if (topOfStack.getSize() == 1 && afterTop.getSize() == 1) {
+            v.dup2();
+            v.pop();
+        } else {
+            swap(v, topOfStack, afterTop);
+            if (topOfStack.getSize() == 1 && afterTop.getSize() == 2) {
+                v.dup2X1();
+            } else if (topOfStack.getSize() == 2 && afterTop.getSize() == 1) {
+                v.dupX2();
+            } else /* top = 2, after top = 2 */ {
+                v.dup2X2();
+            }
+        }
+    }
+
+    public static void dup(@NotNull InstructionAdapter v, @NotNull Type topOfStack, @NotNull Type afterTop) {
+        if (topOfStack.getSize() == 0 && afterTop.getSize() == 0) {
+            return;
+        }
+
+        if (topOfStack.getSize() == 0) {
+            dup(v, afterTop);
+        }
+        else if (afterTop.getSize() == 0) {
+            dup(v, topOfStack);
+        }
+        else if (afterTop.getSize() == 1) {
+            if (topOfStack.getSize() == 1) {
+                dup(v, 2);
+            }
+            else {
+                v.dup2X1();
+                v.pop2();
+                v.dupX2();
+                v.dupX2();
+                v.pop();
+                v.dup2X1();
+            }
+        }
+        else {
+            //Note: it's possible to write dup3 and dup4
+            throw new UnsupportedOperationException("Don't know how generate dup3/dup4 for: " + topOfStack + " and " + afterTop);
+        }
+    }
+
+    public static void writeAnnotationData(
+            @NotNull AnnotationVisitor av, @NotNull String[] data, @NotNull String[] strings
+    ) {
+        AnnotationVisitor dataVisitor = av.visitArray(JvmAnnotationNames.METADATA_DATA_FIELD_NAME);
+        for (String string : data) {
+            dataVisitor.visit(null, string);
+        }
+        dataVisitor.visitEnd();
+
+        AnnotationVisitor stringsVisitor = av.visitArray(JvmAnnotationNames.METADATA_STRINGS_FIELD_NAME);
+        for (String string : strings) {
+            stringsVisitor.visit(null, string);
+        }
+        stringsVisitor.visitEnd();
+    }
+
+    @NotNull
+    public static Type asmTypeByFqNameWithoutInnerClasses(@NotNull FqName fqName) {
+        return Type.getObjectType(internalNameByFqNameWithoutInnerClasses(fqName));
+    }
+
+    @NotNull
+    public static Type asmTypeByClassId(@NotNull ClassId classId) {
+        return Type.getObjectType(classId.asString().replace('.', '$'));
+    }
+
+    @NotNull
+    public static String internalNameByFqNameWithoutInnerClasses(@NotNull FqName fqName) {
+        return JvmClassName.byFqNameWithoutInnerClasses(fqName).getInternalName();
+    }
+
+
+    public static void wrapJavaClassIntoKClass(@NotNull InstructionAdapter v) {
+        v.invokestatic(REFLECTION, "getOrCreateKotlinClass", Type.getMethodDescriptor(K_CLASS_TYPE, getType(Class.class)), false);
+    }
+
+    public static void wrapJavaClassesIntoKClasses(@NotNull InstructionAdapter v) {
+        v.invokestatic(REFLECTION, "getOrCreateKotlinClasses", Type.getMethodDescriptor(K_CLASS_ARRAY_TYPE, getType(Class[].class)), false);
+    }
+
+    @Nullable
+    public static Integer getVisibilityAccessFlag(Visibility visibility) {
+        return visibilityToAccessFlag.get(visibility);
+    }
+}

compiler/backend.common.jvm/src/org/jetbrains/kotlin/codegen/CommonVariableAsmNameManglingUtils.kt

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2010-2020 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.
+ */
+
+@file:JvmName("CommonVariableAsmNameManglingUtils")
+package org.jetbrains.kotlin.codegen
+
+import org.jetbrains.kotlin.resolve.jvm.checkers.isValidDalvikCharacter
+
+fun mangleNameIfNeeded(name: String): String {
+    if (name.all { it.isValidCharacter() }) {
+        return name
+    }
+
+    return buildString {
+        for (c in name) {
+            if (c.isValidCharacter()) {
+                append(c)
+            } else {
+                val hexString = Integer.toHexString(c.toInt())
+                assert(hexString.length <= 4)
+                append("_u").append(hexString)
+            }
+        }
+    }
+}
+
+private fun Char.isValidCharacter(): Boolean {
+    return this != '$' && this != '-' && isValidDalvikCharacter(this)
+}

compiler/backend.common.jvm/src/org/jetbrains/kotlin/codegen/VersionIndependentOpcodes.kt

@@ -0,0 +1,13 @@
+/*
+ * Copyright 2010-2020 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.codegen
+
+import org.jetbrains.org.objectweb.asm.Opcodes
+
+// This object should help compiling against different ASM versions in different bunch versions
+object VersionIndependentOpcodes {
+    const val ACC_RECORD = Opcodes.ACC_RECORD
+}