diff --git a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/caches/NullableMap.kt b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/caches/NullableMap.kt
index 7dfbfb15654..a3544028c54 100644
--- a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/caches/NullableMap.kt
+++ b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/caches/NullableMap.kt
@@ -11,7 +11,8 @@ import org.jetbrains.kotlin.fir.PrivateForInline
  * [Map] which allows store null values
  */
 @OptIn(PrivateForInline::class)
-internal inline class NullableMap<KEY, VALUE>(private val map: MutableMap<KEY, Any> = HashMap()) {
+@JvmInline
+internal value class NullableMap<KEY, VALUE>(private val map: MutableMap<KEY, Any> = HashMap()) {
 
     /**
      * Get value if it is present in map
diff --git a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryCoordinates.kt b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryCoordinates.kt
index d14e315e504..5b361cd7153 100644
--- a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryCoordinates.kt
+++ b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryCoordinates.kt
@@ -5,7 +5,8 @@
 
 package org.jetbrains.kotlin.backend.common.serialization.encodings
 
-inline class BinaryCoordinates(private val decoded: BinaryLattice) {
+@JvmInline
+value class BinaryCoordinates(private val decoded: BinaryLattice) {
     private fun diff(): Int = decoded.second
 
     val startOffset: Int get() = decoded.first
diff --git a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryFlags.kt b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryFlags.kt
index c67b9af9c81..f58821d01e9 100644
--- a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryFlags.kt
+++ b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryFlags.kt
@@ -17,7 +17,8 @@ import org.jetbrains.kotlin.serialization.deserialization.descriptorVisibility
 import org.jetbrains.kotlin.serialization.deserialization.memberKind
 import org.jetbrains.kotlin.types.Variance
 
-inline class ClassFlags(val flags: Long) {
+@JvmInline
+value class ClassFlags(val flags: Long) {
 
     val modality: Modality get() = ProtoEnumFlags.modality(IrFlags.MODALITY.get(flags.toInt()))
     val visibility: DescriptorVisibility get() = ProtoEnumFlags.descriptorVisibility(IrFlags.VISIBILITY.get(flags.toInt()))
@@ -50,7 +51,8 @@ inline class ClassFlags(val flags: Long) {
     }
 }
 
-inline class FunctionFlags(val flags: Long) {
+@JvmInline
+value class FunctionFlags(val flags: Long) {
 
     val modality: Modality get() = ProtoEnumFlags.modality(IrFlags.MODALITY.get(flags.toInt()))
     val visibility: DescriptorVisibility get() = ProtoEnumFlags.descriptorVisibility(IrFlags.VISIBILITY.get(flags.toInt()))
@@ -100,7 +102,8 @@ inline class FunctionFlags(val flags: Long) {
     }
 }
 
-inline class PropertyFlags(val flags: Long) {
+@JvmInline
+value class PropertyFlags(val flags: Long) {
 
     val modality: Modality get() = ProtoEnumFlags.modality(IrFlags.MODALITY.get(flags.toInt()))
     val visibility: DescriptorVisibility get() = ProtoEnumFlags.descriptorVisibility(IrFlags.VISIBILITY.get(flags.toInt()))
@@ -138,7 +141,8 @@ inline class PropertyFlags(val flags: Long) {
     }
 }
 
-inline class ValueParameterFlags(val flags: Long) {
+@JvmInline
+value class ValueParameterFlags(val flags: Long) {
 
     val isCrossInline: Boolean get() = IrFlags.IS_CROSSINLINE.get(flags.toInt())
     val isNoInline: Boolean get() = IrFlags.IS_NOINLINE.get(flags.toInt())
@@ -163,7 +167,8 @@ inline class ValueParameterFlags(val flags: Long) {
     }
 }
 
-inline class TypeAliasFlags(val flags: Long) {
+@JvmInline
+value class TypeAliasFlags(val flags: Long) {
 
     val visibility: DescriptorVisibility get() = ProtoEnumFlags.descriptorVisibility(IrFlags.VISIBILITY.get(flags.toInt()))
     val isActual: Boolean get() = IrFlags.IS_ACTUAL.get(flags.toInt())
@@ -180,7 +185,8 @@ inline class TypeAliasFlags(val flags: Long) {
     }
 }
 
-inline class TypeParameterFlags(val flags: Long) {
+@JvmInline
+value class TypeParameterFlags(val flags: Long) {
 
     val variance: Variance get() = ProtoEnumFlags.variance(IrFlags.VARIANCE.get(flags.toInt()))
     val isReified: Boolean get() = IrFlags.IS_REIFIED.get(flags.toInt())
@@ -197,7 +203,8 @@ inline class TypeParameterFlags(val flags: Long) {
     }
 }
 
-inline class FieldFlags(val flags: Long) {
+@JvmInline
+value class FieldFlags(val flags: Long) {
 
     val visibility: DescriptorVisibility get() = ProtoEnumFlags.descriptorVisibility(IrFlags.VISIBILITY.get(flags.toInt()))
     val isFinal: Boolean get() = IrFlags.IS_FINAL.get(flags.toInt())
@@ -216,7 +223,8 @@ inline class FieldFlags(val flags: Long) {
     }
 }
 
-inline class LocalVariableFlags(val flags: Long) {
+@JvmInline
+value class LocalVariableFlags(val flags: Long) {
 
     val isVar: Boolean get() = IrFlags.IS_LOCAL_VAR.get(flags.toInt())
     val isConst: Boolean get() = IrFlags.IS_LOCAL_CONST.get(flags.toInt())
diff --git a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryLattice.kt b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryLattice.kt
index 09d10b4765f..28968864be9 100644
--- a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryLattice.kt
+++ b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryLattice.kt
@@ -11,7 +11,8 @@ package org.jetbrains.kotlin.backend.common.serialization.encodings
  * j = j1.j2.j3.j4
  * ij -> i1.j1.i2.j2.i3.j3.i4.j4
  */
-inline class BinaryLattice(private val code: Long) {
+@JvmInline
+value class BinaryLattice(private val code: Long) {
 
     val first: Int get() = decodeInt(code)
     val second: Int get() = decodeInt(code ushr 1)
diff --git a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryNameAndType.kt b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryNameAndType.kt
index b385a34201e..f6049d6ed40 100644
--- a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryNameAndType.kt
+++ b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryNameAndType.kt
@@ -5,7 +5,8 @@
 
 package org.jetbrains.kotlin.backend.common.serialization.encodings
 
-inline class BinaryNameAndType(private val decoded: BinaryLattice) {
+@JvmInline
+value class BinaryNameAndType(private val decoded: BinaryLattice) {
     val nameIndex: Int get() = decoded.first
     val typeIndex: Int get() = decoded.second
 
diff --git a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinarySymbolData.kt b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinarySymbolData.kt
index 9431c76e35f..e20a1615d41 100644
--- a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinarySymbolData.kt
+++ b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinarySymbolData.kt
@@ -5,7 +5,8 @@
 
 package org.jetbrains.kotlin.backend.common.serialization.encodings
 
-inline class BinarySymbolData(val code: Long) {
+@JvmInline
+value class BinarySymbolData(val code: Long) {
     enum class SymbolKind {
         FUNCTION_SYMBOL,
         CONSTRUCTOR_SYMBOL,
diff --git a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryTypeProjection.kt b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryTypeProjection.kt
index 743618a095e..32daa0e61b8 100644
--- a/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryTypeProjection.kt
+++ b/compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/encodings/BinaryTypeProjection.kt
@@ -7,7 +7,8 @@ package org.jetbrains.kotlin.backend.common.serialization.encodings
 
 import org.jetbrains.kotlin.types.Variance
 
-inline class BinaryTypeProjection(val code: Long) {
+@JvmInline
+value class BinaryTypeProjection(val code: Long) {
 
     private fun varianceId(): Int = (code and 0x3L).toInt() - 1
 
diff --git a/compiler/testData/cli/jvm/internalArgOverrideLanguageFeature.out b/compiler/testData/cli/jvm/internalArgOverrideLanguageFeature.out
index 24939ce5398..b46dd196f07 100644
--- a/compiler/testData/cli/jvm/internalArgOverrideLanguageFeature.out
+++ b/compiler/testData/cli/jvm/internalArgOverrideLanguageFeature.out
@@ -7,4 +7,7 @@ This mode is not recommended for production use,
 as no stability/compatibility guarantees are given on
 compiler or generated code. Use it at your own risk!
 
-OK
\ No newline at end of file
+compiler/testData/cli/jvm/inlineClass.kt:1:1: warning: inline classes are deprecated in favor of value classes
+inline class Foo(val x: Int)
+^
+OK
diff --git a/compiler/testData/cli/jvm/internalArgOverrideOffLanguageFeature.out b/compiler/testData/cli/jvm/internalArgOverrideOffLanguageFeature.out
index b73488b3019..f5ad523eb02 100644
--- a/compiler/testData/cli/jvm/internalArgOverrideOffLanguageFeature.out
+++ b/compiler/testData/cli/jvm/internalArgOverrideOffLanguageFeature.out
@@ -7,7 +7,7 @@ This mode is not recommended for production use,
 as no stability/compatibility guarantees are given on
 compiler or generated code. Use it at your own risk!
 
-compiler/testData/cli/jvm/inlineClass.kt:1:1: error: the feature "inline classes" is disabled
+compiler/testData/cli/jvm/inlineClass.kt:1:1: warning: inline classes are deprecated in favor of value classes
 inline class Foo(val x: Int)
 ^
-COMPILATION_ERROR
+OK
diff --git a/compiler/testData/multiplatform/inlineClasses/output.txt b/compiler/testData/multiplatform/inlineClasses/output.txt
index de552cbb60c..2d46af487b2 100644
--- a/compiler/testData/multiplatform/inlineClasses/output.txt
+++ b/compiler/testData/multiplatform/inlineClasses/output.txt
@@ -1,10 +1,10 @@
 -- Common --
 Exit code: OK
 Output:
-compiler/testData/multiplatform/inlineClasses/common.kt:3:8: warning: the feature "inline classes" is experimental
+compiler/testData/multiplatform/inlineClasses/common.kt:3:8: warning: inline classes are deprecated in favor of value classes
 expect inline class Foo1(val x: Int)
        ^
-compiler/testData/multiplatform/inlineClasses/common.kt:4:8: warning: the feature "inline classes" is experimental
+compiler/testData/multiplatform/inlineClasses/common.kt:4:8: warning: inline classes are deprecated in favor of value classes
 expect inline class Foo2(val y: String)
        ^
 
diff --git a/compiler/tests-common/tests/org/jetbrains/kotlin/fir/TableRendering.kt b/compiler/tests-common/tests/org/jetbrains/kotlin/fir/TableRendering.kt
index d2939f1843e..1009412c945 100644
--- a/compiler/tests-common/tests/org/jetbrains/kotlin/fir/TableRendering.kt
+++ b/compiler/tests-common/tests/org/jetbrains/kotlin/fir/TableRendering.kt
@@ -131,7 +131,8 @@ enum class TableTimeUnit(val postfixText: String, val nsMultiplier: Double, val
     }
 }
 
-inline class TableTimeUnitConversion(val value: Double) {
+@JvmInline
+value class TableTimeUnitConversion(val value: Double) {
     infix fun to(dest: TableTimeUnit): Double {
         return value * dest.nsMultiplier
     }
diff --git a/generators/builtins/unsignedTypes.kt b/generators/builtins/unsignedTypes.kt
index c57d92ecbfa..d0ab0a6933d 100644
--- a/generators/builtins/unsignedTypes.kt
+++ b/generators/builtins/unsignedTypes.kt
@@ -40,11 +40,13 @@ class UnsignedTypeGenerator(val type: UnsignedType, out: PrintWriter) : BuiltIns
     override fun generateBody() {
 
         out.println("import kotlin.experimental.*")
+        out.println("import kotlin.jvm.*")
         out.println()
 
         out.println("@SinceKotlin(\"1.3\")")
         out.println("@ExperimentalUnsignedTypes")
-        out.println("public inline class $className @PublishedApi internal constructor(@PublishedApi internal val data: $storageType) : Comparable<$className> {")
+        out.println("@JvmInline")
+        out.println("public value class $className @PublishedApi internal constructor(@PublishedApi internal val data: $storageType) : Comparable<$className> {")
         out.println()
         out.println("""    companion object {
         /**
@@ -419,9 +421,13 @@ class UnsignedArrayGenerator(val type: UnsignedType, out: PrintWriter) : BuiltIn
     val storageElementType = type.asSigned.capitalized
     val storageArrayType = storageElementType + "Array"
     override fun generateBody() {
+        out.println("import kotlin.jvm.*")
+        out.println()
+
         out.println("@SinceKotlin(\"1.3\")")
         out.println("@ExperimentalUnsignedTypes")
-        out.println("public inline class $arrayType")
+        out.println("@JvmInline")
+        out.println("public value class $arrayType")
         out.println("@PublishedApi")
         out.println("internal constructor(@PublishedApi internal val storage: $storageArrayType) : Collection<$elementType> {")
         out.println(
diff --git a/js/js.translator/testData/lineNumbers/coroutine.kt b/js/js.translator/testData/lineNumbers/coroutine.kt
index f95ad0eb35c..3f362470bac 100644
--- a/js/js.translator/testData/lineNumbers/coroutine.kt
+++ b/js/js.translator/testData/lineNumbers/coroutine.kt
@@ -14,4 +14,4 @@ suspend fun bar(): Unit {
     println(a + b)
 }
 
-// LINES: 39 4 4 4 7 5 5 45 45 5 91 45 5 5 6 4 4 4 9 15 9 9 9 * 9 15 10 10 11 11 11 11 11 * 11 12 12 13 13 13 13 13 13 13 14 14 * 9 15 9 9 9 9
\ No newline at end of file
+// LINES: 39 4 4 4 7 5 5 45 45 5 93 45 5 5 6 4 4 4 9 15 9 9 9 * 9 15 10 10 11 11 11 11 11 * 11 12 12 13 13 13 13 13 13 13 14 14 * 9 15 9 9 9 9
\ No newline at end of file
diff --git a/libraries/stdlib/api/js-v1/kotlin.kt b/libraries/stdlib/api/js-v1/kotlin.kt
index b171cf91d52..3e7b62dec9f 100644
--- a/libraries/stdlib/api/js-v1/kotlin.kt
+++ b/libraries/stdlib/api/js-v1/kotlin.kt
@@ -1995,6 +1995,7 @@ public final annotation class RequiresOptIn : kotlin.Annotation {
 }
 
 @kotlin.SinceKotlin(version = "1.3")
+@kotlin.jvm.JvmInline
 public final inline class Result<out T> : kotlin.io.Serializable {
     public final val isFailure: kotlin.Boolean { get; }
 
@@ -2242,6 +2243,7 @@ public final data class Triple<out A, out B, out C> : kotlin.io.Serializable {
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class UByte : kotlin.Comparable<kotlin.UByte> {
     @kotlin.internal.InlineOnly
     public final inline infix fun and(other: kotlin.UByte): kotlin.UByte
@@ -2385,6 +2387,7 @@ public final inline class UByte : kotlin.Comparable<kotlin.UByte> {
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class UByteArray : kotlin.collections.Collection<kotlin.UByte> {
     public constructor UByteArray(size: kotlin.Int)
 
@@ -2411,6 +2414,7 @@ public final inline class UByteArray : kotlin.collections.Collection<kotlin.UByt
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class UInt : kotlin.Comparable<kotlin.UInt> {
     @kotlin.internal.InlineOnly
     public final inline infix fun and(other: kotlin.UInt): kotlin.UInt
@@ -2560,6 +2564,7 @@ public final inline class UInt : kotlin.Comparable<kotlin.UInt> {
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class UIntArray : kotlin.collections.Collection<kotlin.UInt> {
     public constructor UIntArray(size: kotlin.Int)
 
@@ -2586,6 +2591,7 @@ public final inline class UIntArray : kotlin.collections.Collection<kotlin.UInt>
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class ULong : kotlin.Comparable<kotlin.ULong> {
     @kotlin.internal.InlineOnly
     public final inline infix fun and(other: kotlin.ULong): kotlin.ULong
@@ -2735,6 +2741,7 @@ public final inline class ULong : kotlin.Comparable<kotlin.ULong> {
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class ULongArray : kotlin.collections.Collection<kotlin.ULong> {
     public constructor ULongArray(size: kotlin.Int)
 
@@ -2761,6 +2768,7 @@ public final inline class ULongArray : kotlin.collections.Collection<kotlin.ULon
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class UShort : kotlin.Comparable<kotlin.UShort> {
     @kotlin.internal.InlineOnly
     public final inline infix fun and(other: kotlin.UShort): kotlin.UShort
@@ -2904,6 +2912,7 @@ public final inline class UShort : kotlin.Comparable<kotlin.UShort> {
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class UShortArray : kotlin.collections.Collection<kotlin.UShort> {
     public constructor UShortArray(size: kotlin.Int)
 
@@ -2971,4 +2980,4 @@ public final annotation class UseExperimental : kotlin.Annotation {
     public constructor UseExperimental(vararg markerClass: kotlin.reflect.KClass<out kotlin.Annotation>)
 
     public final val markerClass: kotlin.Array<out kotlin.reflect.KClass<out kotlin.Annotation>> { get; }
-}
+}
\ No newline at end of file
diff --git a/libraries/stdlib/api/js-v1/kotlin.time.kt b/libraries/stdlib/api/js-v1/kotlin.time.kt
index 1a6cd136902..b195dcadf61 100644
--- a/libraries/stdlib/api/js-v1/kotlin.time.kt
+++ b/libraries/stdlib/api/js-v1/kotlin.time.kt
@@ -158,6 +158,7 @@ public abstract class AbstractLongTimeSource : kotlin.time.TimeSource {
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.time.ExperimentalTime
+@kotlin.jvm.JvmInline
 public final inline class Duration : kotlin.Comparable<kotlin.time.Duration> {
     public final val absoluteValue: kotlin.time.Duration { get; }
 
diff --git a/libraries/stdlib/api/js/kotlin.kt b/libraries/stdlib/api/js/kotlin.kt
index 5651e59e50d..781b8dc3cd0 100644
--- a/libraries/stdlib/api/js/kotlin.kt
+++ b/libraries/stdlib/api/js/kotlin.kt
@@ -1985,6 +1985,7 @@ public final annotation class RequiresOptIn : kotlin.Annotation {
 }
 
 @kotlin.SinceKotlin(version = "1.3")
+@kotlin.jvm.JvmInline
 public final inline class Result<out T> : kotlin.io.Serializable {
     public final val isFailure: kotlin.Boolean { get; }
 
@@ -2247,6 +2248,7 @@ public final data class Triple<out A, out B, out C> : kotlin.io.Serializable {
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class UByte : kotlin.Comparable<kotlin.UByte> {
     @kotlin.internal.InlineOnly
     public final inline infix fun and(other: kotlin.UByte): kotlin.UByte
@@ -2390,6 +2392,7 @@ public final inline class UByte : kotlin.Comparable<kotlin.UByte> {
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class UByteArray : kotlin.collections.Collection<kotlin.UByte> {
     public constructor UByteArray(size: kotlin.Int)
 
@@ -2416,6 +2419,7 @@ public final inline class UByteArray : kotlin.collections.Collection<kotlin.UByt
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class UInt : kotlin.Comparable<kotlin.UInt> {
     @kotlin.internal.InlineOnly
     public final inline infix fun and(other: kotlin.UInt): kotlin.UInt
@@ -2565,6 +2569,7 @@ public final inline class UInt : kotlin.Comparable<kotlin.UInt> {
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class UIntArray : kotlin.collections.Collection<kotlin.UInt> {
     public constructor UIntArray(size: kotlin.Int)
 
@@ -2591,6 +2596,7 @@ public final inline class UIntArray : kotlin.collections.Collection<kotlin.UInt>
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class ULong : kotlin.Comparable<kotlin.ULong> {
     @kotlin.internal.InlineOnly
     public final inline infix fun and(other: kotlin.ULong): kotlin.ULong
@@ -2740,6 +2746,7 @@ public final inline class ULong : kotlin.Comparable<kotlin.ULong> {
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class ULongArray : kotlin.collections.Collection<kotlin.ULong> {
     public constructor ULongArray(size: kotlin.Int)
 
@@ -2766,6 +2773,7 @@ public final inline class ULongArray : kotlin.collections.Collection<kotlin.ULon
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class UShort : kotlin.Comparable<kotlin.UShort> {
     @kotlin.internal.InlineOnly
     public final inline infix fun and(other: kotlin.UShort): kotlin.UShort
@@ -2909,6 +2917,7 @@ public final inline class UShort : kotlin.Comparable<kotlin.UShort> {
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.ExperimentalUnsignedTypes
+@kotlin.jvm.JvmInline
 public final inline class UShortArray : kotlin.collections.Collection<kotlin.UShort> {
     public constructor UShortArray(size: kotlin.Int)
 
@@ -2972,4 +2981,4 @@ public final annotation class UseExperimental : kotlin.Annotation {
     public constructor UseExperimental(vararg markerClass: kotlin.reflect.KClass<out kotlin.Annotation>)
 
     public final val markerClass: kotlin.Array<out kotlin.reflect.KClass<out kotlin.Annotation>> { get; }
-}
+}
\ No newline at end of file
diff --git a/libraries/stdlib/api/js/kotlin.time.kt b/libraries/stdlib/api/js/kotlin.time.kt
index 1a6cd136902..b195dcadf61 100644
--- a/libraries/stdlib/api/js/kotlin.time.kt
+++ b/libraries/stdlib/api/js/kotlin.time.kt
@@ -158,6 +158,7 @@ public abstract class AbstractLongTimeSource : kotlin.time.TimeSource {
 
 @kotlin.SinceKotlin(version = "1.3")
 @kotlin.time.ExperimentalTime
+@kotlin.jvm.JvmInline
 public final inline class Duration : kotlin.Comparable<kotlin.time.Duration> {
     public final val absoluteValue: kotlin.time.Duration { get; }
 
diff --git a/libraries/stdlib/src/kotlin/time/Duration.kt b/libraries/stdlib/src/kotlin/time/Duration.kt
index da0c52f7ea4..604e3681bcc 100644
--- a/libraries/stdlib/src/kotlin/time/Duration.kt
+++ b/libraries/stdlib/src/kotlin/time/Duration.kt
@@ -6,6 +6,7 @@
 package kotlin.time
 
 import kotlin.contracts.*
+import kotlin.jvm.JvmInline
 import kotlin.math.abs
 
 @OptIn(ExperimentalTime::class)
@@ -27,7 +28,8 @@ private inline val storageUnit get() = DurationUnit.NANOSECONDS
  */
 @SinceKotlin("1.3")
 @ExperimentalTime
-public inline class Duration internal constructor(internal val value: Double) : Comparable<Duration> {
+@JvmInline
+public value class Duration internal constructor(internal val value: Double) : Comparable<Duration> {
     init {
         require(!value.isNaN()) { "Duration value cannot be NaN." }
     }
diff --git a/libraries/stdlib/src/kotlin/util/Result.kt b/libraries/stdlib/src/kotlin/util/Result.kt
index 5f3055b0e4b..1650072df5c 100644
--- a/libraries/stdlib/src/kotlin/util/Result.kt
+++ b/libraries/stdlib/src/kotlin/util/Result.kt
@@ -10,6 +10,7 @@ package kotlin
 import kotlin.contracts.*
 import kotlin.internal.InlineOnly
 import kotlin.jvm.JvmField
+import kotlin.jvm.JvmInline
 import kotlin.jvm.JvmName
 
 /**
@@ -17,7 +18,8 @@ import kotlin.jvm.JvmName
  * or a failure with an arbitrary [Throwable] exception.
  */
 @SinceKotlin("1.3")
-public inline class Result<out T> @PublishedApi internal constructor(
+@JvmInline
+public value class Result<out T> @PublishedApi internal constructor(
     @PublishedApi
     internal val value: Any?
 ) : Serializable {
diff --git a/libraries/stdlib/unsigned/src/kotlin/UByte.kt b/libraries/stdlib/unsigned/src/kotlin/UByte.kt
index e923dd5448c..101209f29e2 100644
--- a/libraries/stdlib/unsigned/src/kotlin/UByte.kt
+++ b/libraries/stdlib/unsigned/src/kotlin/UByte.kt
@@ -8,10 +8,12 @@
 package kotlin
 
 import kotlin.experimental.*
+import kotlin.jvm.*
 
 @SinceKotlin("1.3")
 @ExperimentalUnsignedTypes
-public inline class UByte @PublishedApi internal constructor(@PublishedApi internal val data: Byte) : Comparable<UByte> {
+@JvmInline
+public value class UByte @PublishedApi internal constructor(@PublishedApi internal val data: Byte) : Comparable<UByte> {
 
     companion object {
         /**
diff --git a/libraries/stdlib/unsigned/src/kotlin/UByteArray.kt b/libraries/stdlib/unsigned/src/kotlin/UByteArray.kt
index 7dd7d6074c6..827af883b5b 100644
--- a/libraries/stdlib/unsigned/src/kotlin/UByteArray.kt
+++ b/libraries/stdlib/unsigned/src/kotlin/UByteArray.kt
@@ -7,9 +7,12 @@
 
 package kotlin
 
+import kotlin.jvm.*
+
 @SinceKotlin("1.3")
 @ExperimentalUnsignedTypes
-public inline class UByteArray
+@JvmInline
+public value class UByteArray
 @PublishedApi
 internal constructor(@PublishedApi internal val storage: ByteArray) : Collection<UByte> {
 
diff --git a/libraries/stdlib/unsigned/src/kotlin/UInt.kt b/libraries/stdlib/unsigned/src/kotlin/UInt.kt
index d0efa652343..0823846138a 100644
--- a/libraries/stdlib/unsigned/src/kotlin/UInt.kt
+++ b/libraries/stdlib/unsigned/src/kotlin/UInt.kt
@@ -8,10 +8,12 @@
 package kotlin
 
 import kotlin.experimental.*
+import kotlin.jvm.*
 
 @SinceKotlin("1.3")
 @ExperimentalUnsignedTypes
-public inline class UInt @PublishedApi internal constructor(@PublishedApi internal val data: Int) : Comparable<UInt> {
+@JvmInline
+public value class UInt @PublishedApi internal constructor(@PublishedApi internal val data: Int) : Comparable<UInt> {
 
     companion object {
         /**
diff --git a/libraries/stdlib/unsigned/src/kotlin/UIntArray.kt b/libraries/stdlib/unsigned/src/kotlin/UIntArray.kt
index b3a283bea30..3253539235c 100644
--- a/libraries/stdlib/unsigned/src/kotlin/UIntArray.kt
+++ b/libraries/stdlib/unsigned/src/kotlin/UIntArray.kt
@@ -7,9 +7,12 @@
 
 package kotlin
 
+import kotlin.jvm.*
+
 @SinceKotlin("1.3")
 @ExperimentalUnsignedTypes
-public inline class UIntArray
+@JvmInline
+public value class UIntArray
 @PublishedApi
 internal constructor(@PublishedApi internal val storage: IntArray) : Collection<UInt> {
 
diff --git a/libraries/stdlib/unsigned/src/kotlin/ULong.kt b/libraries/stdlib/unsigned/src/kotlin/ULong.kt
index 851e4625d50..4506a5290cf 100644
--- a/libraries/stdlib/unsigned/src/kotlin/ULong.kt
+++ b/libraries/stdlib/unsigned/src/kotlin/ULong.kt
@@ -8,10 +8,12 @@
 package kotlin
 
 import kotlin.experimental.*
+import kotlin.jvm.*
 
 @SinceKotlin("1.3")
 @ExperimentalUnsignedTypes
-public inline class ULong @PublishedApi internal constructor(@PublishedApi internal val data: Long) : Comparable<ULong> {
+@JvmInline
+public value class ULong @PublishedApi internal constructor(@PublishedApi internal val data: Long) : Comparable<ULong> {
 
     companion object {
         /**
diff --git a/libraries/stdlib/unsigned/src/kotlin/ULongArray.kt b/libraries/stdlib/unsigned/src/kotlin/ULongArray.kt
index 7baf5724c61..d1056b3b4cf 100644
--- a/libraries/stdlib/unsigned/src/kotlin/ULongArray.kt
+++ b/libraries/stdlib/unsigned/src/kotlin/ULongArray.kt
@@ -7,9 +7,12 @@
 
 package kotlin
 
+import kotlin.jvm.*
+
 @SinceKotlin("1.3")
 @ExperimentalUnsignedTypes
-public inline class ULongArray
+@JvmInline
+public value class ULongArray
 @PublishedApi
 internal constructor(@PublishedApi internal val storage: LongArray) : Collection<ULong> {
 
diff --git a/libraries/stdlib/unsigned/src/kotlin/UShort.kt b/libraries/stdlib/unsigned/src/kotlin/UShort.kt
index 5933f15e74c..66571ff9971 100644
--- a/libraries/stdlib/unsigned/src/kotlin/UShort.kt
+++ b/libraries/stdlib/unsigned/src/kotlin/UShort.kt
@@ -8,10 +8,12 @@
 package kotlin
 
 import kotlin.experimental.*
+import kotlin.jvm.*
 
 @SinceKotlin("1.3")
 @ExperimentalUnsignedTypes
-public inline class UShort @PublishedApi internal constructor(@PublishedApi internal val data: Short) : Comparable<UShort> {
+@JvmInline
+public value class UShort @PublishedApi internal constructor(@PublishedApi internal val data: Short) : Comparable<UShort> {
 
     companion object {
         /**
diff --git a/libraries/stdlib/unsigned/src/kotlin/UShortArray.kt b/libraries/stdlib/unsigned/src/kotlin/UShortArray.kt
index b2f5c5a6c24..70661a5b0fa 100644
--- a/libraries/stdlib/unsigned/src/kotlin/UShortArray.kt
+++ b/libraries/stdlib/unsigned/src/kotlin/UShortArray.kt
@@ -7,9 +7,12 @@
 
 package kotlin
 
+import kotlin.jvm.*
+
 @SinceKotlin("1.3")
 @ExperimentalUnsignedTypes
-public inline class UShortArray
+@JvmInline
+public value class UShortArray
 @PublishedApi
 internal constructor(@PublishedApi internal val storage: ShortArray) : Collection<UShort> {