diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/inlineClassesCodegenUtil.kt b/compiler/backend/src/org/jetbrains/kotlin/codegen/inlineClassesCodegenUtil.kt
index bb3a5ddb85081..64945f6bdb528 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/inlineClassesCodegenUtil.kt
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/inlineClassesCodegenUtil.kt
@@ -56,6 +56,10 @@ fun classFileContainsMethod(descriptor: FunctionDescriptor, state: GenerationSta
         }
     }
 
+    return classFileContainsMethod(classId, state, method)
+}
+
+fun classFileContainsMethod(classId: ClassId, state: GenerationState, method: Method): Boolean? {
     val bytes = VirtualFileFinder.getInstance(state.project, state.module).findVirtualFileWithHeader(classId)
         ?.contentsToByteArray() ?: return null
     var found = false
diff --git a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/irCodegenUtils.kt b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/irCodegenUtils.kt
index 7ce12403cc157..bda2089bc5c9d 100644
--- a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/irCodegenUtils.kt
+++ b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/irCodegenUtils.kt
@@ -21,10 +21,7 @@ import org.jetbrains.kotlin.codegen.SourceInfo
 import org.jetbrains.kotlin.codegen.classFileContainsMethod
 import org.jetbrains.kotlin.codegen.inline.SourceMapper
 import org.jetbrains.kotlin.codegen.signature.BothSignatureWriter
-import org.jetbrains.kotlin.descriptors.ClassKind
-import org.jetbrains.kotlin.descriptors.DeclarationDescriptorWithSource
-import org.jetbrains.kotlin.descriptors.DescriptorVisibilities
-import org.jetbrains.kotlin.descriptors.Modality
+import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.expressions.IrMemberAccessExpression
@@ -36,6 +33,8 @@ import org.jetbrains.kotlin.ir.types.getClass
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.load.java.JavaDescriptorVisibilities
 import org.jetbrains.kotlin.load.java.JvmAbi
+import org.jetbrains.kotlin.load.kotlin.JvmPackagePartSource
+import org.jetbrains.kotlin.name.ClassId
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.resolve.checkers.ExpectedActualDeclarationChecker
 import org.jetbrains.kotlin.resolve.inline.INLINE_ONLY_ANNOTATION_FQ_NAME
@@ -379,12 +378,20 @@ val IrMemberAccessExpression<*>.psiElement: PsiElement?
 fun IrSimpleType.isRawType(): Boolean =
     hasAnnotation(JvmGeneratorExtensions.RAW_TYPE_ANNOTATION_FQ_NAME)
 
-@OptIn(ObsoleteDescriptorBasedAPI::class)
 internal fun classFileContainsMethod(function: IrFunction, context: JvmBackendContext, name: String): Boolean? {
+    val classId = (function.parent as? IrClass)?.classId ?: (function.containerSource as? JvmPackagePartSource)?.classId ?: return null
     val originalDescriptor = context.methodSignatureMapper.mapSignatureWithGeneric(function).asmMethod.descriptor
     val descriptor = if (function.isSuspend)
         listOf(*Type.getArgumentTypes(originalDescriptor), Type.getObjectType("kotlin/coroutines/Continuation"))
             .joinToString(prefix = "(", postfix = ")", separator = "") + AsmTypes.OBJECT_TYPE
     else originalDescriptor
-    return classFileContainsMethod(function.descriptor, context.state, Method(name, descriptor))
+    return classFileContainsMethod(classId, context.state, Method(name, descriptor))
 }
+
+// Translated into IR-based terms from classifierDescriptor?.classId
+val IrClass.classId: ClassId?
+    get() = when (val parent = parent) {
+        is IrExternalPackageFragment -> ClassId(parent.fqName, name)
+        is IrClass -> parent.classId?.createNestedClassId(name)
+        else -> null
+    }
diff --git a/compiler/testData/codegen/box/inlineClasses/hiddenConstructor/kt28855.kt b/compiler/testData/codegen/box/inlineClasses/hiddenConstructor/kt28855.kt
index e4a455fc25fa3..fcb0e09e436ed 100644
--- a/compiler/testData/codegen/box/inlineClasses/hiddenConstructor/kt28855.kt
+++ b/compiler/testData/codegen/box/inlineClasses/hiddenConstructor/kt28855.kt
@@ -3,7 +3,6 @@
 // !LANGUAGE: +InlineClasses
 // WITH_RUNTIME
 // KJS_WITH_FULL_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 class C<T>(val x: T, vararg ys: UInt) {
     val y0 = ys[0]
diff --git a/compiler/testData/codegen/box/ranges/forInUntil/kt42533.kt b/compiler/testData/codegen/box/ranges/forInUntil/kt42533.kt
index a30811ac5231e..dd0029787d267 100644
--- a/compiler/testData/codegen/box/ranges/forInUntil/kt42533.kt
+++ b/compiler/testData/codegen/box/ranges/forInUntil/kt42533.kt
@@ -1,7 +1,6 @@
 // IGNORE_BACKEND: JVM
 // WITH_RUNTIME
 // KJS_WITH_FULL_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 fun box(): String {
     // These should all be empty progressions
diff --git a/compiler/testData/codegen/box/ranges/unsigned/inMixedUnsignedRange.kt b/compiler/testData/codegen/box/ranges/unsigned/inMixedUnsignedRange.kt
index b23d54112ce6a..132819b96ae97 100644
--- a/compiler/testData/codegen/box/ranges/unsigned/inMixedUnsignedRange.kt
+++ b/compiler/testData/codegen/box/ranges/unsigned/inMixedUnsignedRange.kt
@@ -1,6 +1,5 @@
 // WITH_RUNTIME
 // KJS_WITH_FULL_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 fun ub_ub(x: UByte, a: UByte, b: UByte) = x in a..b
 fun ub_us(x: UByte, a: UShort, b: UShort) = x in a..b
diff --git a/compiler/testData/codegen/box/ranges/unsigned/kt35004.kt b/compiler/testData/codegen/box/ranges/unsigned/kt35004.kt
index ecee127b47487..d8e6459244dda 100644
--- a/compiler/testData/codegen/box/ranges/unsigned/kt35004.kt
+++ b/compiler/testData/codegen/box/ranges/unsigned/kt35004.kt
@@ -1,6 +1,5 @@
 // WITH_RUNTIME
 // KJS_WITH_FULL_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 fun ULong.foobar() =
     when (this) {
diff --git a/compiler/testData/codegen/box/ranges/unsigned/nullableLoopParameter/progressionExpression.kt b/compiler/testData/codegen/box/ranges/unsigned/nullableLoopParameter/progressionExpression.kt
index 4a9d45bb04529..e6be182814ba1 100644
--- a/compiler/testData/codegen/box/ranges/unsigned/nullableLoopParameter/progressionExpression.kt
+++ b/compiler/testData/codegen/box/ranges/unsigned/nullableLoopParameter/progressionExpression.kt
@@ -3,7 +3,6 @@
 // IGNORE_LIGHT_ANALYSIS
 // WITH_RUNTIME
 // KJS_WITH_FULL_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 fun box(): String {
     var result = 0u
diff --git a/compiler/testData/codegen/box/ranges/unsigned/nullableLoopParameter/rangeExpression.kt b/compiler/testData/codegen/box/ranges/unsigned/nullableLoopParameter/rangeExpression.kt
index 720130b808416..bef0270964f96 100644
--- a/compiler/testData/codegen/box/ranges/unsigned/nullableLoopParameter/rangeExpression.kt
+++ b/compiler/testData/codegen/box/ranges/unsigned/nullableLoopParameter/rangeExpression.kt
@@ -3,7 +3,6 @@
 // IGNORE_LIGHT_ANALYSIS
 // WITH_RUNTIME
 // KJS_WITH_FULL_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 fun box(): String {
     var result = 0u
diff --git a/compiler/testData/codegen/box/ranges/unsigned/nullableLoopParameter/rangeLiteral.kt b/compiler/testData/codegen/box/ranges/unsigned/nullableLoopParameter/rangeLiteral.kt
index 850050f8e4043..f1646d783e02a 100644
--- a/compiler/testData/codegen/box/ranges/unsigned/nullableLoopParameter/rangeLiteral.kt
+++ b/compiler/testData/codegen/box/ranges/unsigned/nullableLoopParameter/rangeLiteral.kt
@@ -3,7 +3,6 @@
 // IGNORE_LIGHT_ANALYSIS
 // WITH_RUNTIME
 // KJS_WITH_FULL_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 fun box(): String {
     var result = 0u
diff --git a/compiler/testData/codegen/box/ranges/unsigned/outOfBoundsInMixedContains.kt b/compiler/testData/codegen/box/ranges/unsigned/outOfBoundsInMixedContains.kt
index ef200ef7e006a..99830393053bf 100644
--- a/compiler/testData/codegen/box/ranges/unsigned/outOfBoundsInMixedContains.kt
+++ b/compiler/testData/codegen/box/ranges/unsigned/outOfBoundsInMixedContains.kt
@@ -1,6 +1,5 @@
 // WITH_RUNTIME
 // KJS_WITH_FULL_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 fun testIn(x: ULong) =
     x in UInt.MIN_VALUE..UInt.MAX_VALUE
diff --git a/compiler/testData/codegen/box/unsignedTypes/checkBasicUnsignedLiterals.kt b/compiler/testData/codegen/box/unsignedTypes/checkBasicUnsignedLiterals.kt
index b6f577af5004f..0950cc046322f 100644
--- a/compiler/testData/codegen/box/unsignedTypes/checkBasicUnsignedLiterals.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/checkBasicUnsignedLiterals.kt
@@ -1,6 +1,5 @@
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 fun box(): String {
     val good = 42.toUInt()
diff --git a/compiler/testData/codegen/box/unsignedTypes/forInUnsignedDownTo.kt b/compiler/testData/codegen/box/unsignedTypes/forInUnsignedDownTo.kt
index 9bfd25fba24dc..3ecb162d57664 100644
--- a/compiler/testData/codegen/box/unsignedTypes/forInUnsignedDownTo.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/forInUnsignedDownTo.kt
@@ -2,7 +2,6 @@
 // WASM_MUTE_REASON: STDLIB_COLLECTIONS
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 const val MaxUI = UInt.MAX_VALUE
 const val MinUI = UInt.MIN_VALUE
diff --git a/compiler/testData/codegen/box/unsignedTypes/forInUnsignedProgression.kt b/compiler/testData/codegen/box/unsignedTypes/forInUnsignedProgression.kt
index 7e19fe5610b39..92035351c4549 100644
--- a/compiler/testData/codegen/box/unsignedTypes/forInUnsignedProgression.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/forInUnsignedProgression.kt
@@ -2,7 +2,6 @@
 // WASM_MUTE_REASON: STDLIB_COLLECTIONS
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 const val MaxUI = UInt.MAX_VALUE
 const val MinUI = UInt.MIN_VALUE
diff --git a/compiler/testData/codegen/box/unsignedTypes/forInUnsignedRange.kt b/compiler/testData/codegen/box/unsignedTypes/forInUnsignedRange.kt
index 7884c066ccec6..7a88f58a014cb 100644
--- a/compiler/testData/codegen/box/unsignedTypes/forInUnsignedRange.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/forInUnsignedRange.kt
@@ -2,7 +2,6 @@
 // WASM_MUTE_REASON: STDLIB_COLLECTIONS
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 const val MaxUI = UInt.MAX_VALUE
 const val MinUI = UInt.MIN_VALUE
diff --git a/compiler/testData/codegen/box/unsignedTypes/forInUnsignedRangeLiteral.kt b/compiler/testData/codegen/box/unsignedTypes/forInUnsignedRangeLiteral.kt
index 828605c752dc8..aaefd70376461 100644
--- a/compiler/testData/codegen/box/unsignedTypes/forInUnsignedRangeLiteral.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/forInUnsignedRangeLiteral.kt
@@ -2,7 +2,6 @@
 // WASM_MUTE_REASON: STDLIB_COLLECTIONS
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 const val MaxUI = UInt.MAX_VALUE
 const val MinUI = UInt.MIN_VALUE
diff --git a/compiler/testData/codegen/box/unsignedTypes/forInUnsignedRangeWithCoercion.kt b/compiler/testData/codegen/box/unsignedTypes/forInUnsignedRangeWithCoercion.kt
index d18f1b00de490..86ef6034e61f9 100644
--- a/compiler/testData/codegen/box/unsignedTypes/forInUnsignedRangeWithCoercion.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/forInUnsignedRangeWithCoercion.kt
@@ -1,6 +1,5 @@
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 val UB_MAX = UByte.MAX_VALUE
 val UB_START = (UB_MAX - 10u).toUByte()
diff --git a/compiler/testData/codegen/box/unsignedTypes/forInUnsignedUntil.kt b/compiler/testData/codegen/box/unsignedTypes/forInUnsignedUntil.kt
index 10c81177a1a6d..8468e31d528ac 100644
--- a/compiler/testData/codegen/box/unsignedTypes/forInUnsignedUntil.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/forInUnsignedUntil.kt
@@ -2,7 +2,6 @@
 // WASM_MUTE_REASON: STDLIB_COLLECTIONS
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 const val MaxUI = UInt.MAX_VALUE
 const val MinUI = UInt.MIN_VALUE
diff --git a/compiler/testData/codegen/box/unsignedTypes/inUnsignedDownTo.kt b/compiler/testData/codegen/box/unsignedTypes/inUnsignedDownTo.kt
index 8d3a75a8a1bd1..c87972db0224c 100644
--- a/compiler/testData/codegen/box/unsignedTypes/inUnsignedDownTo.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/inUnsignedDownTo.kt
@@ -2,7 +2,6 @@
 // WASM_MUTE_REASON: STDLIB_COLLECTIONS
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 const val MaxUI = UInt.MAX_VALUE
 const val MinUI = UInt.MIN_VALUE
diff --git a/compiler/testData/codegen/box/unsignedTypes/inUnsignedRange.kt b/compiler/testData/codegen/box/unsignedTypes/inUnsignedRange.kt
index 9ebf6e83f736d..f87d766e4fac1 100644
--- a/compiler/testData/codegen/box/unsignedTypes/inUnsignedRange.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/inUnsignedRange.kt
@@ -1,6 +1,5 @@
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 const val MaxUI = UInt.MAX_VALUE
 const val MinUI = UInt.MIN_VALUE
diff --git a/compiler/testData/codegen/box/unsignedTypes/inUnsignedRangeLiteral.kt b/compiler/testData/codegen/box/unsignedTypes/inUnsignedRangeLiteral.kt
index 47cdcd81f87b6..5b0cc5eab289d 100644
--- a/compiler/testData/codegen/box/unsignedTypes/inUnsignedRangeLiteral.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/inUnsignedRangeLiteral.kt
@@ -1,6 +1,5 @@
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 const val MaxUI = UInt.MAX_VALUE
 const val MinUI = UInt.MIN_VALUE
diff --git a/compiler/testData/codegen/box/unsignedTypes/inUnsignedUntil.kt b/compiler/testData/codegen/box/unsignedTypes/inUnsignedUntil.kt
index c1eda749a2166..df040cb251252 100644
--- a/compiler/testData/codegen/box/unsignedTypes/inUnsignedUntil.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/inUnsignedUntil.kt
@@ -1,6 +1,5 @@
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 const val MaxUI = UInt.MAX_VALUE
 const val MinUI = UInt.MIN_VALUE
diff --git a/compiler/testData/codegen/box/unsignedTypes/iterateOverArrayOfUnsignedValues.kt b/compiler/testData/codegen/box/unsignedTypes/iterateOverArrayOfUnsignedValues.kt
index 52aa896b8a3e3..75c87d38f30c8 100644
--- a/compiler/testData/codegen/box/unsignedTypes/iterateOverArrayOfUnsignedValues.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/iterateOverArrayOfUnsignedValues.kt
@@ -2,7 +2,6 @@
 // WASM_MUTE_REASON: UNSIGNED_ARRAYS
 // WITH_RUNTIME
 // KJS_WITH_FULL_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 fun box(): String {
     var sum = 0u
diff --git a/compiler/testData/codegen/box/unsignedTypes/iterateOverListOfBoxedUnsignedValues.kt b/compiler/testData/codegen/box/unsignedTypes/iterateOverListOfBoxedUnsignedValues.kt
index 0aaf9aa8006fc..fdd7ee8188a09 100644
--- a/compiler/testData/codegen/box/unsignedTypes/iterateOverListOfBoxedUnsignedValues.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/iterateOverListOfBoxedUnsignedValues.kt
@@ -1,6 +1,5 @@
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 fun box(): String {
     var sum = 0u
diff --git a/compiler/testData/codegen/box/unsignedTypes/kt25784.kt b/compiler/testData/codegen/box/unsignedTypes/kt25784.kt
index 2fd166341e2ba..e7dc0265f046c 100644
--- a/compiler/testData/codegen/box/unsignedTypes/kt25784.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/kt25784.kt
@@ -2,7 +2,6 @@
 // WASM_MUTE_REASON: PROPERTY_REFERENCES
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 import kotlin.reflect.KProperty
 import kotlin.reflect.KProperty0
diff --git a/compiler/testData/codegen/box/unsignedTypes/kt43286a.kt b/compiler/testData/codegen/box/unsignedTypes/kt43286a.kt
index b0677e0fb6959..917ec50c25ecc 100644
--- a/compiler/testData/codegen/box/unsignedTypes/kt43286a.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/kt43286a.kt
@@ -1,7 +1,6 @@
 // JVM_TARGET: 1.8
 // WITH_RUNTIME
 // KJS_WITH_FULL_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 fun box(): String {
     val x = 3UL % 2U
diff --git a/compiler/testData/codegen/box/unsignedTypes/unsignedIntDivide.kt b/compiler/testData/codegen/box/unsignedTypes/unsignedIntDivide.kt
index 8ff522f2cc0e3..0f2412922a209 100644
--- a/compiler/testData/codegen/box/unsignedTypes/unsignedIntDivide.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/unsignedIntDivide.kt
@@ -1,6 +1,5 @@
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 val ua = 1234U
 val ub = 5678U
diff --git a/compiler/testData/codegen/box/unsignedTypes/unsignedIntRemainder.kt b/compiler/testData/codegen/box/unsignedTypes/unsignedIntRemainder.kt
index f94a54880c268..5052b82ebea9a 100644
--- a/compiler/testData/codegen/box/unsignedTypes/unsignedIntRemainder.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/unsignedIntRemainder.kt
@@ -1,6 +1,5 @@
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 val ua = 1234U
 val ub = 5678U
diff --git a/compiler/testData/codegen/box/unsignedTypes/unsignedLongDivide.kt b/compiler/testData/codegen/box/unsignedTypes/unsignedLongDivide.kt
index 5fb5226ab2b88..c9436d9708486 100644
--- a/compiler/testData/codegen/box/unsignedTypes/unsignedLongDivide.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/unsignedLongDivide.kt
@@ -1,6 +1,5 @@
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 val ua = 1234UL
 val ub = 5678UL
diff --git a/compiler/testData/codegen/box/unsignedTypes/unsignedLongRemainder.kt b/compiler/testData/codegen/box/unsignedTypes/unsignedLongRemainder.kt
index 254e71c600ac0..09ca73b544dcd 100644
--- a/compiler/testData/codegen/box/unsignedTypes/unsignedLongRemainder.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/unsignedLongRemainder.kt
@@ -1,6 +1,5 @@
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 val ua = 1234UL
 val ub = 5678UL
diff --git a/compiler/testData/codegen/box/unsignedTypes/unsignedTypeValuesInsideStringTemplates.kt b/compiler/testData/codegen/box/unsignedTypes/unsignedTypeValuesInsideStringTemplates.kt
index a59aec5f3adf8..32b0ffc28d25b 100644
--- a/compiler/testData/codegen/box/unsignedTypes/unsignedTypeValuesInsideStringTemplates.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/unsignedTypeValuesInsideStringTemplates.kt
@@ -2,7 +2,6 @@
 // WASM_MUTE_REASON: STDLIB_TEXT
 // KJS_WITH_FULL_RUNTIME
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 const val MAX_BYTE: UByte = 0xFFu
 const val HUNDRED: UByte = 100u
diff --git a/compiler/testData/codegen/box/unsignedTypes/varargsOfUnsignedTypes.kt b/compiler/testData/codegen/box/unsignedTypes/varargsOfUnsignedTypes.kt
index bf1ebbbace54c..b37a7918758fa 100644
--- a/compiler/testData/codegen/box/unsignedTypes/varargsOfUnsignedTypes.kt
+++ b/compiler/testData/codegen/box/unsignedTypes/varargsOfUnsignedTypes.kt
@@ -2,7 +2,6 @@
 // WASM_MUTE_REASON: SPREAD_OPERATOR
 // WITH_RUNTIME
 // KJS_WITH_FULL_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 fun uint(vararg us: UInt): UIntArray = us
 
diff --git a/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedIntDivide_jvm18.kt b/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedIntDivide_jvm18.kt
index ac0308002e321..6765deea3547c 100644
--- a/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedIntDivide_jvm18.kt
+++ b/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedIntDivide_jvm18.kt
@@ -1,6 +1,5 @@
 // JVM_TARGET: 1.8
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 val ua = 1234U
 val ub = 5678U
diff --git a/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedIntRemainder_jvm18.kt b/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedIntRemainder_jvm18.kt
index ea97267b2a9f2..cd5135f232b35 100644
--- a/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedIntRemainder_jvm18.kt
+++ b/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedIntRemainder_jvm18.kt
@@ -1,6 +1,5 @@
 // JVM_TARGET: 1.8
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 val ua = 1234U
 val ub = 5678U
diff --git a/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedLongDivide_jvm18.kt b/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedLongDivide_jvm18.kt
index bf85cd0126c2e..795efb5e00285 100644
--- a/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedLongDivide_jvm18.kt
+++ b/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedLongDivide_jvm18.kt
@@ -1,6 +1,5 @@
 // JVM_TARGET: 1.8
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 val ua = 1234UL
 val ub = 5678UL
diff --git a/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedLongRemainder_jvm18.kt b/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedLongRemainder_jvm18.kt
index 15a7aba6f8af0..de7b81bb0ed86 100644
--- a/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedLongRemainder_jvm18.kt
+++ b/compiler/testData/codegen/bytecodeText/unsignedTypes/unsignedLongRemainder_jvm18.kt
@@ -1,6 +1,5 @@
 // JVM_TARGET: 1.8
 // WITH_RUNTIME
-// IGNORE_BACKEND_FIR: JVM_IR
 
 val ua = 1234UL
 val ub = 5678UL
diff --git a/compiler/testData/compileKotlinAgainstKotlin/inlineClassesOldMangling.kt b/compiler/testData/compileKotlinAgainstKotlin/inlineClassesOldMangling.kt
index 4a5860fed4406..32b07378d6eab 100644
--- a/compiler/testData/compileKotlinAgainstKotlin/inlineClassesOldMangling.kt
+++ b/compiler/testData/compileKotlinAgainstKotlin/inlineClassesOldMangling.kt
@@ -1,5 +1,4 @@
 // !LANGUAGE: +InlineClasses
-// IGNORE_BACKEND_FIR: JVM_IR
 // FILE: 1.kt
 // KOTLIN_CONFIGURATION_FLAGS: +JVM.USE_OLD_INLINE_CLASSES_MANGLING_SCHEME
 package test