KT-52217 Rename 'use-fir' to 'use-k2', update message

2022-04-26 16:16:38 +03:00
parent 1c90d8a960
commit 58885a1b07
52 changed files with 96 additions and 98 deletions
@@ -294,10 +294,11 @@ abstract class CommonCompilerArguments : CommonToolArguments() {

    @GradleOption(DefaultValues.BooleanFalseDefault::class)
    @Argument(
-        value = "-Xuse-fir",
-        description = "Compile using Front-end IR. Warning: this feature is far from being production-ready"
+        value = "-Xuse-k2",
+        deprecatedName = "-Xuse-fir",
+        description = "Compile using experimental K2. K2 is a new compiler pipeline, no compatibility guarantees are yet provided"
    )
-    var useFir: Boolean by FreezableVar(false)
+    var useK2: Boolean by FreezableVar(false)

    @Argument(
        value = "-Xuse-fir-extended-checkers",
@@ -528,7 +528,7 @@ Also sets `-jvm-target` value equal to the selected JDK version"""
        result[JvmAnalysisFlags.sanitizeParentheses] = sanitizeParentheses
        result[JvmAnalysisFlags.suppressMissingBuiltinsError] = suppressMissingBuiltinsError
        result[JvmAnalysisFlags.enableJvmPreview] = enableJvmPreview
-        result[AnalysisFlags.allowUnstableDependencies] = allowUnstableDependencies || useFir
+        result[AnalysisFlags.allowUnstableDependencies] = allowUnstableDependencies || useK2
        result[JvmAnalysisFlags.disableUltraLightClasses] = disableUltraLightClasses
        result[JvmAnalysisFlags.useIR] = !useOldBackend
        return result
@@ -22,7 +22,7 @@ fun <A : CommonCompilerArguments> CompilerConfiguration.setupCommonArguments(
    createMetadataVersion: ((IntArray) -> BinaryVersion)? = null
 ) {
    put(CommonConfigurationKeys.DISABLE_INLINE, arguments.noInline)
-    put(CommonConfigurationKeys.USE_FIR, arguments.useFir)
+    put(CommonConfigurationKeys.USE_FIR, arguments.useK2)
    put(CommonConfigurationKeys.USE_FIR_EXTENDED_CHECKERS, arguments.useFirExtendedCheckers)
    put(CommonConfigurationKeys.EXPECT_ACTUAL_LINKER, arguments.expectActualLinker)
    putIfNotNull(CLIConfigurationKeys.INTELLIJ_PLUGIN_ROOT, arguments.intellijPluginRoot)
@@ -82,7 +82,7 @@ object FirKotlinToJvmBytecodeCompiler {

        messageCollector.report(
            STRONG_WARNING,
-            "ATTENTION!\n This build uses in-dev FIR: \n  -Xuse-fir"
+            "ATTENTION!\n This build uses experimental K2 compiler: \n  -Xuse-k2"
        )

        projectConfiguration.get(ComponentRegistrar.PLUGIN_COMPONENT_REGISTRARS)?.let { pluginComponentRegistrars ->
@@ -97,7 +97,7 @@ fun compileModulesUsingFrontendIrAndLightTree(

    messageCollector.report(
        CompilerMessageSeverity.STRONG_WARNING,
-        "ATTENTION!\n This build uses in-dev FIR: \n  -Xuse-fir"
+        "ATTENTION!\n This build uses experimental K2 compiler: \n  -Xuse-k2"
    )

    val outputs = mutableListOf<GenerationState>()
@@ -230,7 +230,7 @@ fun CompilerConfiguration.configureAdvancedJvmOptions(arguments: K2JVMCompilerAr

    // TODO: ignore previous configuration value when we do not need old backend in scripting by default
    val useOldBackend = arguments.useOldBackend || (!arguments.useIR && get(JVMConfigurationKeys.IR) == false)
-    val useIR = arguments.useFir ||
+    val useIR = arguments.useK2 ||
            if (languageVersionSettings.supportsFeature(LanguageFeature.JvmIrEnabledByDefault)) {
                !useOldBackend
            } else {
@@ -15,7 +15,7 @@ class FE1FullPipelineModularizedTest : AbstractFullPipelineModularizedTest() {
    override fun configureArguments(args: K2JVMCompilerArguments, moduleData: ModuleData) {
        args.useIR = USE_BE_IR
        args.useOldBackend = !USE_BE_IR
-        args.useFir = false
+        args.useK2 = false
        args.jvmDefault = "compatibility"
        args.apiVersion = "1.4"
        args.optIn = arrayOf(
@@ -12,7 +12,7 @@ private val LANGUAGE_VERSION: String = System.getProperty("fir.bench.language.ve
 class FullPipelineModularizedTest : AbstractFullPipelineModularizedTest() {

    override fun configureArguments(args: K2JVMCompilerArguments, moduleData: ModuleData) {
-        args.useFir = true
+        args.useK2 = true
        args.useIR = true
        args.apiVersion = LANGUAGE_VERSION
        args.jvmDefault = "compatibility"
@@ -88,7 +88,7 @@ fun makeIncrementally(

    withIC(args) {
        val compiler =
-            if (args.useFir && args.useFirIC && args.useFirLT /* TODO: move LT check into runner */ )
+            if (args.useK2 && args.useFirIC && args.useFirLT /* TODO: move LT check into runner */ )
                IncrementalFirJvmCompilerRunner(
                    cachesDir, buildReporter, buildHistoryFile, emptyList(), EmptyModulesApiHistory, kotlinExtensions, ClasspathSnapshotDisabled
                )
@@ -97,7 +97,7 @@ fun makeIncrementally(
                    cachesDir,
                    buildReporter,
                    // Use precise setting in case of non-Gradle build
-                    usePreciseJavaTracking = !args.useFir, // TODO: add fir-based java classes tracker when available and set this to true
+                    usePreciseJavaTracking = !args.useK2, // TODO: add fir-based java classes tracker when available and set this to true
                    outputFiles = emptyList(),
                    buildHistoryFile = buildHistoryFile,
                    modulesApiHistory = EmptyModulesApiHistory,
@@ -12,7 +12,7 @@ import java.io.File
 abstract class AbstractIncrementalFirICLightTreeJvmCompilerRunnerTest : AbstractIncrementalJvmCompilerRunnerTest() {
    override fun createCompilerArguments(destinationDir: File, testDir: File): K2JVMCompilerArguments =
        super.createCompilerArguments(destinationDir, testDir).apply {
-            useFir = true
+            useK2 = true
            useIR = true
            useFirIC = true
            useFirLT = true
@@ -23,7 +23,7 @@ import java.io.File
 abstract class AbstractIncrementalFirJvmCompilerRunnerTest : AbstractIncrementalJvmCompilerRunnerTest() {
    override fun createCompilerArguments(destinationDir: File, testDir: File): K2JVMCompilerArguments =
        super.createCompilerArguments(destinationDir, testDir).apply {
-            useFir = true
+            useK2 = true
            useIR = true
        }

@@ -12,7 +12,7 @@ import java.io.File
 abstract class AbstractIncrementalFirLightTreeJvmCompilerRunnerTest : AbstractIncrementalJvmCompilerRunnerTest() {
    override fun createCompilerArguments(destinationDir: File, testDir: File): K2JVMCompilerArguments =
        super.createCompilerArguments(destinationDir, testDir).apply {
-            useFir = true
+            useK2 = true
            useIR = true
            useFirIC = false
            useFirLT = true
@@ -104,10 +104,10 @@ where advanced options include:
  -Xsuppress-version-warnings Suppress warnings about outdated, inconsistent or experimental language or API versions
  -Xunrestricted-builder-inference
                             Eliminate builder inference restrictions like allowance of returning type variables of a builder inference call
-  -Xuse-fir                  Compile using Front-end IR. Warning: this feature is far from being production-ready
  -Xuse-fir-extended-checkers Use extended analysis mode based on Front-end IR. Warning: this feature is far from being production-ready
  -Xuse-fir-ic               Compile using Front-end IR internal incremental compilation cycle. Warning: this feature is far from being production-ready
  -Xuse-fir-lt               Compile using LightTree parser with Front-end IR. Warning: this feature is far from being production-ready
+  -Xuse-k2                   Compile using experimental K2. K2 is a new compiler pipeline, no compatibility guarantees are yet provided
  -Xuse-mixed-named-arguments Enable Support named arguments in their own position even if the result appears as mixed
  -Xverbose-phases           Be verbose while performing these backend phases

@@ -1,4 +1,4 @@
 $TESTDATA_DIR$/conflictingProjection.kt
-Xuse-fir
+-Xuse-k2
 -d
 $TEMP_DIR$
@@ -1,6 +1,6 @@
 warning: ATTENTION!
- This build uses in-dev FIR:
-  -Xuse-fir
+ This build uses experimental K2 compiler:
+  -Xuse-k2
 compiler/testData/cli/jvm/conflictingProjection.kt:10:19: error: projection is conflicting with variance of the corresponding type parameter of Out<in kotlin/Int>. Remove the projection or replace it with '*'
 fun a8(value: Out<in Int>) {}
                  ^
@@ -1,5 +1,5 @@
 $TESTDATA_DIR$/extendedCheckers.kt
-Xuse-fir
+-Xuse-k2
 -Xuse-fir-extended-checkers
 -d
 $TEMP_DIR$
@@ -1,6 +1,6 @@
 warning: ATTENTION!
- This build uses in-dev FIR:
-  -Xuse-fir
+ This build uses experimental K2 compiler:
+  -Xuse-k2
 compiler/testData/cli/jvm/extendedCheckers.kt:2:12: warning: redundant explicit type
    val i: Int = 1
           ^
@@ -1,5 +1,5 @@
 $TESTDATA_DIR$/extendedCheckersNoWarning.kt
-Xuse-fir
+-Xuse-k2
 -Xuse-fir-extended-checkers
 -d
 $TEMP_DIR$
@@ -1,4 +1,4 @@
 warning: ATTENTION!
- This build uses in-dev FIR:
-  -Xuse-fir
+ This build uses experimental K2 compiler:
+  -Xuse-k2
 OK
@@ -210,10 +210,10 @@ where advanced options include:
  -Xsuppress-version-warnings Suppress warnings about outdated, inconsistent or experimental language or API versions
  -Xunrestricted-builder-inference
                             Eliminate builder inference restrictions like allowance of returning type variables of a builder inference call
-  -Xuse-fir                  Compile using Front-end IR. Warning: this feature is far from being production-ready
  -Xuse-fir-extended-checkers Use extended analysis mode based on Front-end IR. Warning: this feature is far from being production-ready
  -Xuse-fir-ic               Compile using Front-end IR internal incremental compilation cycle. Warning: this feature is far from being production-ready
  -Xuse-fir-lt               Compile using LightTree parser with Front-end IR. Warning: this feature is far from being production-ready
+  -Xuse-k2                   Compile using experimental K2. K2 is a new compiler pipeline, no compatibility guarantees are yet provided
  -Xuse-mixed-named-arguments Enable Support named arguments in their own position even if the result appears as mixed
  -Xverbose-phases           Be verbose while performing these backend phases

@@ -1,4 +1,4 @@
 $TESTDATA_DIR$/firError.kt
-Xuse-fir
+-Xuse-k2
 -d
 $TEMP_DIR$
@@ -1,6 +1,6 @@
 warning: ATTENTION!
- This build uses in-dev FIR:
-  -Xuse-fir
+ This build uses experimental K2 compiler:
+  -Xuse-k2
 compiler/testData/cli/jvm/firError.kt:5:13: error: variable 'x' must be initialized
    println(x)
            ^
@@ -1,4 +1,4 @@
 $TESTDATA_DIR$/firHello.kt
-Xuse-fir
+-Xuse-k2
 -d
 $TEMP_DIR$
@@ -1,4 +1,4 @@
 warning: ATTENTION!
- This build uses in-dev FIR:
-  -Xuse-fir
+ This build uses experimental K2 compiler:
+  -Xuse-k2
 OK
@@ -2,7 +2,7 @@ $TESTDATA_DIR$/firMultiplatformCompilationWithError/common.kt
 $TESTDATA_DIR$/firMultiplatformCompilationWithError/jvm.kt
 -Xcommon-sources
 $TESTDATA_DIR$/firMultiplatformCompilationWithError/common.kt
-Xuse-fir
+-Xuse-k2
 -cp
 .
 -d
@@ -9,8 +9,8 @@ as no stability/compatibility guarantees are given on
 compiler or generated code. Use it at your own risk!

 warning: ATTENTION!
- This build uses in-dev FIR:
-  -Xuse-fir
+ This build uses experimental K2 compiler:
+  -Xuse-k2
 compiler/testData/cli/jvm/firMultiplatformCompilationWithError/jvm.kt:1:18: error: actual class 'public abstract actual interface A : R|kotlin/Any|' has no corresponding members for expected class members:

    public abstract expect fun foo(): R|kotlin/Unit|
@@ -2,7 +2,7 @@ $TESTDATA_DIR$/firMultiplatformCompilationWithoutErrors/common.kt
 $TESTDATA_DIR$/firMultiplatformCompilationWithoutErrors/jvm.kt
 -Xcommon-sources
 $TESTDATA_DIR$/firMultiplatformCompilationWithoutErrors/common.kt
-Xuse-fir
+-Xuse-k2
 -cp
 .
 -d
@@ -9,6 +9,6 @@ as no stability/compatibility guarantees are given on
 compiler or generated code. Use it at your own risk!

 warning: ATTENTION!
- This build uses in-dev FIR:
-  -Xuse-fir
+ This build uses experimental K2 compiler:
+  -Xuse-k2
 OK
@@ -1,5 +1,5 @@
 $TESTDATA_DIR$/firStdlibDependency.kt
-Xuse-fir
+-Xuse-k2
 -cp
 .
 -d
@@ -1,4 +1,4 @@
 warning: ATTENTION!
- This build uses in-dev FIR:
-  -Xuse-fir
+ This build uses experimental K2 compiler:
+  -Xuse-k2
 OK
@@ -1,6 +1,6 @@
 $TESTDATA_DIR$/firVsClassicAnnotation.kt
 -classpath
 $TESTDATA_DIR$/firVsClassicAnnotation
-Xuse-fir
+-Xuse-k2
 -d
 $TEMP_DIR$
@@ -1,4 +1,4 @@
 warning: ATTENTION!
- This build uses in-dev FIR:
-  -Xuse-fir
+ This build uses experimental K2 compiler:
+  -Xuse-k2
 OK
@@ -1,4 +1,4 @@
 $TESTDATA_DIR$/inapplicableLateinitModifier.kt
-Xuse-fir
+-Xuse-k2
 -d
 $TEMP_DIR$
@@ -1,6 +1,6 @@
 warning: ATTENTION!
- This build uses in-dev FIR:
-  -Xuse-fir
+ This build uses experimental K2 compiler:
+  -Xuse-k2
 compiler/testData/cli/jvm/inapplicableLateinitModifier.kt:6:1: error: 'lateinit' modifier is not allowed on delegated properties
 lateinit var kest by Delegate
 ^
@@ -1,4 +1,4 @@
 $TESTDATA_DIR$/instanceAccessBeforeSuperCall.kt
-Xuse-fir
+-Xuse-k2
 -d
 $TEMP_DIR$
@@ -1,6 +1,6 @@
 warning: ATTENTION!
- This build uses in-dev FIR:
-  -Xuse-fir
+ This build uses experimental K2 compiler:
+  -Xuse-k2
 compiler/testData/cli/jvm/instanceAccessBeforeSuperCall.kt:2:26: error: unresolved reference: getSomeInt
    constructor(x: Int = getSomeInt(), other: A = this, header: String = keker) {}
                         ^
@@ -2,5 +2,5 @@ $TESTDATA_DIR$/optInEmptyMessageFir.kt
 -d
 $TEMP_DIR$
 -opt-in=kotlin.RequiresOptIn
-Xuse-fir
+-Xuse-k2

@@ -1,6 +1,6 @@
 warning: ATTENTION!
- This build uses in-dev FIR:
-  -Xuse-fir
+ This build uses experimental K2 compiler:
+  -Xuse-k2
 compiler/testData/cli/jvm/optInEmptyMessageFir.kt:8:5: error: this declaration needs opt-in. Its usage must be marked with '@EmptyMarker' or '@OptIn(EmptyMarker::class)'
    foo()
    ^
@@ -2,4 +2,4 @@ $TESTDATA_DIR$/optInOverrideMessageFir.kt
 -d
 $TEMP_DIR$
 -opt-in=kotlin.RequiresOptIn
-Xuse-fir
+-Xuse-k2
@@ -1,6 +1,6 @@
 warning: ATTENTION!
- This build uses in-dev FIR:
-  -Xuse-fir
+ This build uses experimental K2 compiler:
+  -Xuse-k2
 compiler/testData/cli/jvm/optInOverrideMessageFir.kt:16:18: error: base declaration of supertype 'Base' needs opt-in. This API is experimental and can change at any time, please use with care. The declaration override must be annotated with '@Marker' or '@OptIn(Marker::class)'
    override fun foo() {}
                 ^
@@ -137,10 +137,7 @@ abstract class AbstractKotlinCompilerIntegrationTest : TestCaseWithTmpdir() {

    private fun String.removeFirWarning(): String {
        return this.replace(
-            """warning: ATTENTION!
- This build uses in-dev FIR: 
-  -Xuse-fir
-""", ""
+            "warning: ATTENTION!\n This build uses experimental K2 compiler: \n  -Xuse-k2\n", ""
        )
    }

@@ -546,7 +546,7 @@ class CompileKotlinAgainstCustomBinariesTest : AbstractKotlinCompilerIntegration

    fun testInternalFromFriendModuleFir() {
        val library = compileLibrary("library")
-        compileKotlin("source.kt", tmpdir, listOf(library), additionalOptions = listOf("-Xfriend-paths=${library.path}", "-Xuse-fir"))
+        compileKotlin("source.kt", tmpdir, listOf(library), additionalOptions = listOf("-Xfriend-paths=${library.path}", "-Xuse-k2"))
    }

    fun testJvmDefaultClashWithOld() {
@@ -620,20 +620,20 @@ class CompileKotlinAgainstCustomBinariesTest : AbstractKotlinCompilerIntegration
    }

    fun testFirAgainstFir() {
-        val library = compileLibrary("library", additionalOptions = listOf("-Xuse-fir"))
-        compileKotlin("source.kt", tmpdir, listOf(library), additionalOptions = listOf("-Xuse-fir"))
+        val library = compileLibrary("library", additionalOptions = listOf("-Xuse-k2"))
+        compileKotlin("source.kt", tmpdir, listOf(library), additionalOptions = listOf("-Xuse-k2"))
    }

    fun testFirAgainstOldJvm() {
        val library = compileLibrary("library")
-        compileKotlin("source.kt", tmpdir, listOf(library), additionalOptions = listOf("-Xuse-fir"))
+        compileKotlin("source.kt", tmpdir, listOf(library), additionalOptions = listOf("-Xuse-k2"))
    }

    fun testFirIncorrectJavaSignature() {
        compileKotlin(
            "source.kt", tmpdir,
            listOf(),
-            additionalOptions = listOf("-Xuse-fir"),
+            additionalOptions = listOf("-Xuse-k2"),
            additionalSources = listOf("A.java", "B.java"),
        )
    }
@@ -647,10 +647,10 @@ class CompileKotlinAgainstCustomBinariesTest : AbstractKotlinCompilerIntegration
    }

    fun testOldJvmAgainstFir() {
-        val library = compileLibrary("library", additionalOptions = listOf("-Xuse-fir"))
+        val library = compileLibrary("library", additionalOptions = listOf("-Xuse-k2"))
        compileKotlin("source.kt", tmpdir, listOf(library))

-        val library2 = compileLibrary("library", additionalOptions = listOf("-Xuse-fir", "-Xabi-stability=unstable"))
+        val library2 = compileLibrary("library", additionalOptions = listOf("-Xuse-k2", "-Xabi-stability=unstable"))
        compileKotlin("source.kt", tmpdir, listOf(library2))
    }

@@ -660,12 +660,12 @@ class CompileKotlinAgainstCustomBinariesTest : AbstractKotlinCompilerIntegration
    }

    fun testOldJvmAgainstFirWithStableAbi() {
-        val library = compileLibrary("library", additionalOptions = listOf("-Xuse-fir", "-Xabi-stability=stable"))
+        val library = compileLibrary("library", additionalOptions = listOf("-Xuse-k2", "-Xabi-stability=stable"))
        compileKotlin("source.kt", tmpdir, listOf(library))
    }

    fun testOldJvmAgainstFirWithAllowUnstableDependencies() {
-        val library = compileLibrary("library", additionalOptions = listOf("-Xuse-fir"))
+        val library = compileLibrary("library", additionalOptions = listOf("-Xuse-k2"))
        compileKotlin("source.kt", tmpdir, listOf(library), additionalOptions = listOf("-Xallow-unstable-dependencies"))
    }

@@ -95,7 +95,7 @@ class CompilerArgumentsContentProspectorTest {
            CommonCompilerArguments::profilePhases,
            CommonCompilerArguments::checkPhaseConditions,
            CommonCompilerArguments::checkStickyPhaseConditions,
-            CommonCompilerArguments::useFir,
+            CommonCompilerArguments::useK2,
            CommonCompilerArguments::useFirExtendedCheckers,
            CommonCompilerArguments::disableUltraLightClasses,
            CommonCompilerArguments::useMixedNamedArguments,
@@ -20,8 +20,8 @@ interface KotlinCommonOptions  : org.jetbrains.kotlin.gradle.dsl.KotlinCommonToo
     var languageVersion: kotlin.String?

    /**
-     * Compile using Front-end IR. Warning: this feature is far from being production-ready
+     * Compile using experimental K2. K2 is a new compiler pipeline, no compatibility guarantees are yet provided
     * Default value: false
     */
-     var useFir: kotlin.Boolean
+     var useK2: kotlin.Boolean
 }
@@ -152,7 +152,7 @@ internal open class GradleCompilerRunner(
                        report(BooleanMetrics.JVM_COMPILER_IR_MODE, args.useIR)
                        report(StringMetrics.JVM_DEFAULTS, args.jvmDefault)
                        report(StringMetrics.USE_OLD_BACKEND, args.useOldBackend.toString())
-                        report(StringMetrics.USE_FIR, args.useFir.toString())
+                        report(StringMetrics.USE_FIR, args.useK2.toString())
                    }
                }
                is K2JSCompilerArguments -> {
@@ -30,11 +30,11 @@ internal abstract class KotlinJsOptionsBase : org.jetbrains.kotlin.gradle.dsl.Ko

    override var languageVersion: kotlin.String? = null

-    private var useFirField: kotlin.Boolean? = null
-    override var useFir: kotlin.Boolean
-        get() = useFirField ?: false
+    private var useK2Field: kotlin.Boolean? = null
+    override var useK2: kotlin.Boolean
+        get() = useK2Field ?: false
        set(value) {
-            useFirField = value
+            useK2Field = value
        }

    private var friendModulesDisabledField: kotlin.Boolean? = null
@@ -105,7 +105,7 @@ internal abstract class KotlinJsOptionsBase : org.jetbrains.kotlin.gradle.dsl.Ko
        verboseField?.let { args.verbose = it }
        apiVersion?.let { args.apiVersion = it }
        languageVersion?.let { args.languageVersion = it }
-        useFirField?.let { args.useFir = it }
+        useK2Field?.let { args.useK2 = it }
        friendModulesDisabledField?.let { args.friendModulesDisabled = it }
        mainField?.let { args.main = it }
        metaInfoField?.let { args.metaInfo = it }
@@ -126,7 +126,7 @@ internal fun org.jetbrains.kotlin.cli.common.arguments.K2JSCompilerArguments.fil
    verbose = false
    apiVersion = null
    languageVersion = null
-    useFir = false
+    useK2 = false
    friendModulesDisabled = false
    main = "call"
    metaInfo = true
@@ -30,11 +30,11 @@ internal abstract class KotlinJvmOptionsBase : org.jetbrains.kotlin.gradle.dsl.K

    override var languageVersion: kotlin.String? = null

-    private var useFirField: kotlin.Boolean? = null
-    override var useFir: kotlin.Boolean
-        get() = useFirField ?: false
+    private var useK2Field: kotlin.Boolean? = null
+    override var useK2: kotlin.Boolean
+        get() = useK2Field ?: false
        set(value) {
-            useFirField = value
+            useK2Field = value
        }

    private var javaParametersField: kotlin.Boolean? = null
@@ -68,7 +68,7 @@ internal abstract class KotlinJvmOptionsBase : org.jetbrains.kotlin.gradle.dsl.K
        verboseField?.let { args.verbose = it }
        apiVersion?.let { args.apiVersion = it }
        languageVersion?.let { args.languageVersion = it }
-        useFirField?.let { args.useFir = it }
+        useK2Field?.let { args.useK2 = it }
        javaParametersField?.let { args.javaParameters = it }
        jvmTarget?.let { args.jvmTarget = it }
        moduleName?.let { args.moduleName = it }
@@ -83,7 +83,7 @@ internal fun org.jetbrains.kotlin.cli.common.arguments.K2JVMCompilerArguments.fi
    verbose = false
    apiVersion = null
    languageVersion = null
-    useFir = false
+    useK2 = false
    javaParameters = false
    jvmTarget = null
    moduleName = null
@@ -30,11 +30,11 @@ internal abstract class KotlinMultiplatformCommonOptionsBase : org.jetbrains.kot

    override var languageVersion: kotlin.String? = null

-    private var useFirField: kotlin.Boolean? = null
-    override var useFir: kotlin.Boolean
-        get() = useFirField ?: false
+    private var useK2Field: kotlin.Boolean? = null
+    override var useK2: kotlin.Boolean
+        get() = useK2Field ?: false
        set(value) {
-            useFirField = value
+            useK2Field = value
        }

    internal open fun updateArguments(args: org.jetbrains.kotlin.cli.common.arguments.K2MetadataCompilerArguments) {
@@ -43,7 +43,7 @@ internal abstract class KotlinMultiplatformCommonOptionsBase : org.jetbrains.kot
        verboseField?.let { args.verbose = it }
        apiVersion?.let { args.apiVersion = it }
        languageVersion?.let { args.languageVersion = it }
-        useFirField?.let { args.useFir = it }
+        useK2Field?.let { args.useK2 = it }
    }
 }

@@ -53,5 +53,5 @@ internal fun org.jetbrains.kotlin.cli.common.arguments.K2MetadataCompilerArgumen
    verbose = false
    apiVersion = null
    languageVersion = null
-    useFir = false
+    useK2 = false
 }
@@ -132,8 +132,8 @@ internal class PropertiesProvider private constructor(private val project: Proje
    val useKotlinAbiSnapshot: Boolean
        get() = booleanProperty(KOTLIN_ABI_SNAPSHOT) ?: false

-    val useFir: Boolean?
-        get() = booleanProperty("kotlin.useFir")
+    val useK2: Boolean?
+        get() = booleanProperty("kotlin.useK2")

    val keepMppDependenciesIntactInPoms: Boolean?
        get() = booleanProperty("kotlin.mpp.keepMppDependenciesIntactInPoms")
@@ -36,8 +36,8 @@ internal class NativeCompileOptions(languageSettingsProvider: () -> LanguageSett
        set(value) {
            languageSettings.languageVersion = value
        }
-
-    override var useFir: Boolean
+    
+    override var useK2: Boolean
        get() = false
        set(@Suppress("UNUSED_PARAMETER") value) {}

@@ -39,8 +39,8 @@ internal open class BaseKotlinCompileConfig<TASK : KotlinCompile> : AbstractKotl
            taskProvider.configure { task ->
                task.incremental = propertiesProvider.incrementalJvm ?: true

-                if (propertiesProvider.useFir == true) {
-                    task.kotlinOptions.useFir = true
+                if (propertiesProvider.useK2 == true) {
+                    task.kotlinOptions.useK2 = true
                }
                task.usePreciseJavaTracking = propertiesProvider.usePreciseJavaTracking ?: true
                task.jvmTargetValidationMode.set(propertiesProvider.jvmTargetValidationMode)
@@ -129,7 +129,7 @@ internal fun reportArgumentsNotAllowed(
        K2JVMCompilerArguments::useJavac,
        K2JVMCompilerArguments::useIR,
        K2JVMCompilerArguments::useOldBackend,
-        K2JVMCompilerArguments::useFir
+        K2JVMCompilerArguments::useK2
    )

 internal fun reportArgumentsIgnoredGenerally(