Enable JVM IR for stdlib/reflect/test libraries

Changes in Gradle integration tests are needed because:
- in new-mpp-android, kotlin-stdlib-jdk8 is used, and JVM IR generates
  JDK 8-specific bytecode (invokedynamic). D8 needs to be configured to
  desugar it with source/target versions set to 1.8, otherwise it
  reports an error.
- in AndroidExtensionsManyVariants and AndroidIcepickProject, D8 fails
  with assertions enabled if AGP < 4.0.0 is used because of
  https://issuetracker.google.com/issues/148661132. The tests which use
  old AGP versions are probably not relevant anymore anyway.

Changes in kotlin-stdlib-runtime-merged.txt are caused by a slightly
different generation scheme of collection subclasses in JVM IR, and are
harmless.

(Previous attempt was at 15e978dbd311c2ba78ec32b394c21acde9811ccb.)

dependencies/kotlin-build-gradle-plugin/src/BuildProperties.kt

@@ -80,8 +80,6 @@ class KotlinBuildProperties(
 
     val localBootstrapPath: String? = getOrNull("bootstrap.local.path") as String?
 
-    val useIRForLibraries: Boolean = getBoolean("kotlin.build.useIRForLibraries")
-
     val useFir: Boolean = getBoolean("kotlin.build.useFir")
 
     val useFirForLibraries: Boolean = getBoolean("kotlin.build.useFirForLibraries")

gradle.properties

@@ -7,9 +7,6 @@ org.gradle.java.installations.fromEnv=JDK_16,JDK_17,JDK_18,JDK_9,JDK_10,JDK_11,J
 cacheRedirectorEnabled=true
 defaultSnapshotVersion=1.6.255-SNAPSHOT
 
-# Enable JVM IR backend for kotlin-stdlib, kotlin-reflect, kotlin-test.
-#kotlin.build.useIRForLibraries=true
-
 #maven.repository.mirror=http://repository.jetbrains.com/remote-repos/
 #bootstrap.kotlin.repo=https://maven.pkg.jetbrains.space/kotlin/p/kotlin/bootstrap
 #bootstrap.kotlin.version=1.1.50-dev-1451

libraries/commonConfiguration.gradle

@@ -64,17 +64,6 @@ ext.configurePluginMarkers = { Project project, withEmptyJars = true ->
     PluginMarkersKt.publishPluginMarkers(project, withEmptyJars)
 }
 
-ext.configureJvmIrBackend = { Project project ->
-    project.tasks.withType(KotlinCompile.class) { task ->
-        task.kotlinOptions {
-            if (!project.kotlinBuildProperties.useIRForLibraries) {
-                useIR = false
-                freeCompilerArgs += "-Xuse-old-backend"
-            }
-        }
-    }
-}
-
 allprojects { project ->
     project.ext.configureSourcesJar = { lambda = {} ->
         ArtifactsKt.sourcesJar(project) { task ->

libraries/kotlin.test/junit/build.gradle

@@ -44,8 +44,6 @@ compileTestKotlin {
     ]
 }
 
-configureJvmIrBackend(project)
-
 if (includeJava9) {
     LibrariesCommon.configureJava9Compilation(project, 'kotlin.test.junit')
 }

libraries/kotlin.test/junit5/build.gradle

@@ -43,8 +43,6 @@ compileTestKotlin {
     ]
 }
 
-configureJvmIrBackend(project)
-
 if (includeJava9) {
     LibrariesCommon.configureJava9Compilation(project, 'kotlin.test.junit5')
 }

libraries/kotlin.test/jvm/build.gradle

@@ -57,8 +57,6 @@ compileTestKotlin {
     ]
 }
 
-configureJvmIrBackend(project)
-
 if (includeJava9) {
     LibrariesCommon.configureJava9Compilation(project, 'kotlin.test')
 }

libraries/kotlin.test/testng/build.gradle

@@ -47,8 +47,6 @@ compileTestKotlin {
     ]
 }
 
-configureJvmIrBackend(project)
-
 if (includeJava9) {
     LibrariesCommon.configureJava9Compilation(project, 'kotlin.test.testng')
 }

libraries/reflect/api/build.gradle

@@ -54,8 +54,6 @@ compileKotlin {
     }
 }
 
-configureJvmIrBackend(project)
-
 jar {
     manifestAttributes(manifest, project, "internal")
 }

libraries/stdlib/jdk7/build.gradle

@@ -90,8 +90,6 @@ compileTestKotlin {
     ]
 }
 
-configureJvmIrBackend(project)
-
 LibrariesCommon.configureJava9Compilation(project, 'kotlin.stdlib.jdk7')
 
 task testJdk6Tests(type: Test) {

libraries/stdlib/jdk8/build.gradle

@@ -75,8 +75,6 @@ compileTestKotlin {
     ]
 }
 
-configureJvmIrBackend(project)
-
 LibrariesCommon.configureJava9Compilation(project, 'kotlin.stdlib.jdk8')
 
 task testJdk6Tests(type: Test) { thisTask ->

libraries/stdlib/jvm/build.gradle

@@ -143,8 +143,6 @@ compileLongRunningTestKotlin {
     kotlinOptions.freeCompilerArgs += "-Xopt-in=kotlin.ExperimentalStdlibApi"
 }
 
-configureJvmIrBackend(project)
-
 task longRunningTest(type: Test, dependsOn: longRunningTestClasses) {
     group = "verification"
     testClassesDirs = sourceSets.longRunningTest.output.classesDirs

libraries/tools/binary-compatibility-validator/reference-public-api/kotlin-stdlib-runtime-merged.txt

@@ -312,7 +312,7 @@ public final class kotlin/UByteArray : java/util/Collection, kotlin/jvm/internal
 	public fun removeAll (Ljava/util/Collection;)Z
 	public fun retainAll (Ljava/util/Collection;)Z
 	public static final fun set-VurrAj0 ([BIB)V
-	public final fun size ()I
+	public synthetic fun size ()I
 	public fun toArray ()[Ljava/lang/Object;
 	public fun toArray ([Ljava/lang/Object;)[Ljava/lang/Object;
 	public fun toString ()Ljava/lang/String;
@@ -371,7 +371,7 @@ public final class kotlin/UIntArray : java/util/Collection, kotlin/jvm/internal/
 	public fun removeAll (Ljava/util/Collection;)Z
 	public fun retainAll (Ljava/util/Collection;)Z
 	public static final fun set-VXSXFK8 ([III)V
-	public final fun size ()I
+	public synthetic fun size ()I
 	public fun toArray ()[Ljava/lang/Object;
 	public fun toArray ([Ljava/lang/Object;)[Ljava/lang/Object;
 	public fun toString ()Ljava/lang/String;
@@ -430,7 +430,7 @@ public final class kotlin/ULongArray : java/util/Collection, kotlin/jvm/internal
 	public fun removeAll (Ljava/util/Collection;)Z
 	public fun retainAll (Ljava/util/Collection;)Z
 	public static final fun set-k8EXiF4 ([JIJ)V
-	public final fun size ()I
+	public synthetic fun size ()I
 	public fun toArray ()[Ljava/lang/Object;
 	public fun toArray ([Ljava/lang/Object;)[Ljava/lang/Object;
 	public fun toString ()Ljava/lang/String;
@@ -489,7 +489,7 @@ public final class kotlin/UShortArray : java/util/Collection, kotlin/jvm/interna
 	public fun removeAll (Ljava/util/Collection;)Z
 	public fun retainAll (Ljava/util/Collection;)Z
 	public static final fun set-01HTLdE ([SIS)V
-	public final fun size ()I
+	public synthetic fun size ()I
 	public fun toArray ()[Ljava/lang/Object;
 	public fun toArray ([Ljava/lang/Object;)[Ljava/lang/Object;
 	public fun toString ()Ljava/lang/String;

libraries/tools/kotlin-annotations-jvm/build.gradle

@@ -27,5 +27,3 @@ compileKotlin {
     ]
     kotlinOptions.moduleName = project.name
 }
-
-configureJvmIrBackend(project)

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/AndroidExtensionsManyVariants/gradle.properties

@@ -1 +0,0 @@
-org.gradle.jvmargs=-ea -XX:MaxPermSize=512m

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/AndroidIcepickProject/gradle.properties

@@ -1 +0,0 @@
-org.gradle.jvmargs=-ea -XX:MaxPermSize=512m

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/resources/testProject/new-mpp-android/app/build.gradle

@@ -21,6 +21,10 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+    compileOptions {
+        sourceCompatibility 1.8
+        targetCompatibility 1.8
+    }
 }
 
 dependencies {

libraries/tools/script-runtime/build.gradle

@@ -40,5 +40,3 @@ compileKotlin {
     ]
     kotlinOptions.moduleName = project.name
 }
-
-configureJvmIrBackend(project)