diff --git a/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/ConstantValueGenerator.kt b/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/ConstantValueGenerator.kt
index 9c683bc5fbc..c504e5fe679 100644
--- a/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/ConstantValueGenerator.kt
+++ b/compiler/ir/ir.psi2ir/src/org/jetbrains/kotlin/psi2ir/generators/ConstantValueGenerator.kt
@@ -45,14 +45,18 @@ class ConstantValueGenerator(
         return when (constantValue) {
             is StringValue -> IrConstImpl.string(startOffset, endOffset, constantType, constantValue.value)
             is IntValue -> IrConstImpl.int(startOffset, endOffset, constantType, constantValue.value)
+            is UIntValue -> IrConstImpl.int(startOffset, endOffset, constantType, constantValue.value)
             is NullValue -> IrConstImpl.constNull(startOffset, endOffset, constantType)
             is BooleanValue -> IrConstImpl.boolean(startOffset, endOffset, constantType, constantValue.value)
             is LongValue -> IrConstImpl.long(startOffset, endOffset, constantType, constantValue.value)
+            is ULongValue -> IrConstImpl.long(startOffset, endOffset, constantType, constantValue.value)
             is DoubleValue -> IrConstImpl.double(startOffset, endOffset, constantType, constantValue.value)
             is FloatValue -> IrConstImpl.float(startOffset, endOffset, constantType, constantValue.value)
             is CharValue -> IrConstImpl.char(startOffset, endOffset, constantType, constantValue.value)
             is ByteValue -> IrConstImpl.byte(startOffset, endOffset, constantType, constantValue.value)
+            is UByteValue -> IrConstImpl.byte(startOffset, endOffset, constantType, constantValue.value)
             is ShortValue -> IrConstImpl.short(startOffset, endOffset, constantType, constantValue.value)
+            is UShortValue -> IrConstImpl.short(startOffset, endOffset, constantType, constantValue.value)
 
             is ArrayValue -> {
                 val arrayElementType = varargElementType ?: constantType.getArrayElementType()
diff --git a/compiler/testData/ir/irText/expressions/unsignedIntegerLiterals.kt b/compiler/testData/ir/irText/expressions/unsignedIntegerLiterals.kt
new file mode 100644
index 00000000000..cce1c9bfd3a
--- /dev/null
+++ b/compiler/testData/ir/irText/expressions/unsignedIntegerLiterals.kt
@@ -0,0 +1,23 @@
+// !LANGUAGE: +InlineClasses
+// !SKIP_METADATA_VERSION_CHECK
+// WITH_UNSIGNED
+
+val testSimpleUIntLiteral = 1u
+
+val testSimpleUIntLiteralWithOverflow = 0xFFFF_FFFFu
+
+val testUByteWithExpectedType: UByte = 1u
+
+val testUShortWithExpectedType: UShort = 1u
+
+val testUIntWithExpectedType: UInt = 1u
+
+val testULongWithExpectedType: ULong = 1u
+
+val testToUByte = 1.toUByte()
+
+val testToUShort = 1.toUShort()
+
+val testToUInt = 1.toUInt()
+
+val testToULong = 1.toULong()
diff --git a/compiler/testData/ir/irText/expressions/unsignedIntegerLiterals.txt b/compiler/testData/ir/irText/expressions/unsignedIntegerLiterals.txt
new file mode 100644
index 00000000000..b496038bdc0
--- /dev/null
+++ b/compiler/testData/ir/irText/expressions/unsignedIntegerLiterals.txt
@@ -0,0 +1,95 @@
+FILE fqName:<root> fileName:/unsignedIntegerLiterals.kt
+  PROPERTY name:testSimpleUIntLiteral type:kotlin.UInt visibility:public modality:FINAL flags:val
+    FIELD PROPERTY_BACKING_FIELD name:testSimpleUIntLiteral type:kotlin.UInt visibility:public flags:final
+      EXPRESSION_BODY
+        CONST Int type=kotlin.UInt value=1
+    FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testSimpleUIntLiteral> visibility:public modality:FINAL <> () returnType:UInt flags:
+      correspondingProperty: PROPERTY name:testSimpleUIntLiteral type:kotlin.UInt visibility:public modality:FINAL flags:val
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='<get-testSimpleUIntLiteral>(): UInt'
+          GET_FIELD 'testSimpleUIntLiteral: UInt' type=kotlin.UInt origin=null
+  PROPERTY name:testSimpleUIntLiteralWithOverflow type:kotlin.UInt visibility:public modality:FINAL flags:val
+    FIELD PROPERTY_BACKING_FIELD name:testSimpleUIntLiteralWithOverflow type:kotlin.UInt visibility:public flags:final
+      EXPRESSION_BODY
+        CONST Int type=kotlin.UInt value=-1
+    FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testSimpleUIntLiteralWithOverflow> visibility:public modality:FINAL <> () returnType:UInt flags:
+      correspondingProperty: PROPERTY name:testSimpleUIntLiteralWithOverflow type:kotlin.UInt visibility:public modality:FINAL flags:val
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='<get-testSimpleUIntLiteralWithOverflow>(): UInt'
+          GET_FIELD 'testSimpleUIntLiteralWithOverflow: UInt' type=kotlin.UInt origin=null
+  PROPERTY name:testUByteWithExpectedType type:kotlin.UByte visibility:public modality:FINAL flags:val
+    FIELD PROPERTY_BACKING_FIELD name:testUByteWithExpectedType type:kotlin.UByte visibility:public flags:final
+      EXPRESSION_BODY
+        CONST Byte type=kotlin.UByte value=1
+    FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testUByteWithExpectedType> visibility:public modality:FINAL <> () returnType:UByte flags:
+      correspondingProperty: PROPERTY name:testUByteWithExpectedType type:kotlin.UByte visibility:public modality:FINAL flags:val
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='<get-testUByteWithExpectedType>(): UByte'
+          GET_FIELD 'testUByteWithExpectedType: UByte' type=kotlin.UByte origin=null
+  PROPERTY name:testUShortWithExpectedType type:kotlin.UShort visibility:public modality:FINAL flags:val
+    FIELD PROPERTY_BACKING_FIELD name:testUShortWithExpectedType type:kotlin.UShort visibility:public flags:final
+      EXPRESSION_BODY
+        CONST Short type=kotlin.UShort value=1
+    FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testUShortWithExpectedType> visibility:public modality:FINAL <> () returnType:UShort flags:
+      correspondingProperty: PROPERTY name:testUShortWithExpectedType type:kotlin.UShort visibility:public modality:FINAL flags:val
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='<get-testUShortWithExpectedType>(): UShort'
+          GET_FIELD 'testUShortWithExpectedType: UShort' type=kotlin.UShort origin=null
+  PROPERTY name:testUIntWithExpectedType type:kotlin.UInt visibility:public modality:FINAL flags:val
+    FIELD PROPERTY_BACKING_FIELD name:testUIntWithExpectedType type:kotlin.UInt visibility:public flags:final
+      EXPRESSION_BODY
+        CONST Int type=kotlin.UInt value=1
+    FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testUIntWithExpectedType> visibility:public modality:FINAL <> () returnType:UInt flags:
+      correspondingProperty: PROPERTY name:testUIntWithExpectedType type:kotlin.UInt visibility:public modality:FINAL flags:val
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='<get-testUIntWithExpectedType>(): UInt'
+          GET_FIELD 'testUIntWithExpectedType: UInt' type=kotlin.UInt origin=null
+  PROPERTY name:testULongWithExpectedType type:kotlin.ULong visibility:public modality:FINAL flags:val
+    FIELD PROPERTY_BACKING_FIELD name:testULongWithExpectedType type:kotlin.ULong visibility:public flags:final
+      EXPRESSION_BODY
+        CONST Long type=kotlin.ULong value=1
+    FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testULongWithExpectedType> visibility:public modality:FINAL <> () returnType:ULong flags:
+      correspondingProperty: PROPERTY name:testULongWithExpectedType type:kotlin.ULong visibility:public modality:FINAL flags:val
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='<get-testULongWithExpectedType>(): ULong'
+          GET_FIELD 'testULongWithExpectedType: ULong' type=kotlin.ULong origin=null
+  PROPERTY name:testToUByte type:kotlin.UByte visibility:public modality:FINAL flags:val
+    FIELD PROPERTY_BACKING_FIELD name:testToUByte type:kotlin.UByte visibility:public flags:final
+      EXPRESSION_BODY
+        CALL 'toUByte() on Int: UByte' type=kotlin.UByte origin=null
+          $receiver: CONST Int type=kotlin.Int value=1
+    FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testToUByte> visibility:public modality:FINAL <> () returnType:UByte flags:
+      correspondingProperty: PROPERTY name:testToUByte type:kotlin.UByte visibility:public modality:FINAL flags:val
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='<get-testToUByte>(): UByte'
+          GET_FIELD 'testToUByte: UByte' type=kotlin.UByte origin=null
+  PROPERTY name:testToUShort type:kotlin.UShort visibility:public modality:FINAL flags:val
+    FIELD PROPERTY_BACKING_FIELD name:testToUShort type:kotlin.UShort visibility:public flags:final
+      EXPRESSION_BODY
+        CALL 'toUShort() on Int: UShort' type=kotlin.UShort origin=null
+          $receiver: CONST Int type=kotlin.Int value=1
+    FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testToUShort> visibility:public modality:FINAL <> () returnType:UShort flags:
+      correspondingProperty: PROPERTY name:testToUShort type:kotlin.UShort visibility:public modality:FINAL flags:val
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='<get-testToUShort>(): UShort'
+          GET_FIELD 'testToUShort: UShort' type=kotlin.UShort origin=null
+  PROPERTY name:testToUInt type:kotlin.UInt visibility:public modality:FINAL flags:val
+    FIELD PROPERTY_BACKING_FIELD name:testToUInt type:kotlin.UInt visibility:public flags:final
+      EXPRESSION_BODY
+        CALL 'toUInt() on Int: UInt' type=kotlin.UInt origin=null
+          $receiver: CONST Int type=kotlin.Int value=1
+    FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testToUInt> visibility:public modality:FINAL <> () returnType:UInt flags:
+      correspondingProperty: PROPERTY name:testToUInt type:kotlin.UInt visibility:public modality:FINAL flags:val
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='<get-testToUInt>(): UInt'
+          GET_FIELD 'testToUInt: UInt' type=kotlin.UInt origin=null
+  PROPERTY name:testToULong type:kotlin.ULong visibility:public modality:FINAL flags:val
+    FIELD PROPERTY_BACKING_FIELD name:testToULong type:kotlin.ULong visibility:public flags:final
+      EXPRESSION_BODY
+        CALL 'toULong() on Int: ULong' type=kotlin.ULong origin=null
+          $receiver: CONST Int type=kotlin.Int value=1
+    FUN DEFAULT_PROPERTY_ACCESSOR name:<get-testToULong> visibility:public modality:FINAL <> () returnType:ULong flags:
+      correspondingProperty: PROPERTY name:testToULong type:kotlin.ULong visibility:public modality:FINAL flags:val
+      BLOCK_BODY
+        RETURN type=kotlin.Nothing from='<get-testToULong>(): ULong'
+          GET_FIELD 'testToULong: ULong' type=kotlin.ULong origin=null
diff --git a/compiler/tests-common/tests/org/jetbrains/kotlin/ir/AbstractIrGeneratorTestCase.kt b/compiler/tests-common/tests/org/jetbrains/kotlin/ir/AbstractIrGeneratorTestCase.kt
index 5f7493e030d..c5dd53a0705 100644
--- a/compiler/tests-common/tests/org/jetbrains/kotlin/ir/AbstractIrGeneratorTestCase.kt
+++ b/compiler/tests-common/tests/org/jetbrains/kotlin/ir/AbstractIrGeneratorTestCase.kt
@@ -51,6 +51,7 @@ abstract class AbstractIrGeneratorTestCase : CodegenTestCase() {
         val javacOptions = ArrayList<String>(0)
         var addRuntime = false
         var addReflect = false
+        var addUnsigned = false
         for (file in files) {
             if (InTextDirectivesUtils.isDirectiveDefined(file.content, "WITH_RUNTIME")) {
                 addRuntime = true
@@ -58,6 +59,9 @@ abstract class AbstractIrGeneratorTestCase : CodegenTestCase() {
             if (InTextDirectivesUtils.isDirectiveDefined(file.content, "WITH_REFLECT")) {
                 addReflect = true
             }
+            if (InTextDirectivesUtils.isDirectiveDefined(file.content, "WITH_UNSIGNED")) {
+                addUnsigned = true
+            }
 
             javacOptions.addAll(InTextDirectivesUtils.findListWithPrefixes(file.content, "// JAVAC_OPTIONS:"))
         }
@@ -65,6 +69,7 @@ abstract class AbstractIrGeneratorTestCase : CodegenTestCase() {
         val configurationKind = when {
             addReflect -> ConfigurationKind.ALL
             addRuntime -> ConfigurationKind.NO_KOTLIN_REFLECT
+            addUnsigned -> ConfigurationKind.WITH_UNSIGNED_TYPES
             else -> ConfigurationKind.JDK_ONLY
         }
 
diff --git a/compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java b/compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java
index d84e1be0fcc..9f713e7330f 100644
--- a/compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java
+++ b/compiler/tests/org/jetbrains/kotlin/ir/IrTextTestCaseGenerated.java
@@ -1082,6 +1082,11 @@ public class IrTextTestCaseGenerated extends AbstractIrTextTestCase {
             runTest("compiler/testData/ir/irText/expressions/typeParameterClassLiteral.kt");
         }
 
+        @TestMetadata("unsignedIntegerLiterals.kt")
+        public void testUnsignedIntegerLiterals() throws Exception {
+            runTest("compiler/testData/ir/irText/expressions/unsignedIntegerLiterals.kt");
+        }
+
         @TestMetadata("useImportedMember.kt")
         public void testUseImportedMember() throws Exception {
             runTest("compiler/testData/ir/irText/expressions/useImportedMember.kt");