diff --git a/compiler/testData/codegen/box/classes/inner/instantiateInSameClass.kt b/compiler/testData/codegen/box/classes/inner/instantiateInSameClass.kt
index 7b81f695dfd..bc6200c60c5 100644
--- a/compiler/testData/codegen/box/classes/inner/instantiateInSameClass.kt
+++ b/compiler/testData/codegen/box/classes/inner/instantiateInSameClass.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 class C(val value: String = "C") {
 
     inner class B(val s: String) {
diff --git a/compiler/testData/codegen/box/classes/kt1345.kt b/compiler/testData/codegen/box/classes/kt1345.kt
index bb09cdf71b5..3933f9c552e 100644
--- a/compiler/testData/codegen/box/classes/kt1345.kt
+++ b/compiler/testData/codegen/box/classes/kt1345.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 interface Creator<T> {
     fun create() : T
 }
diff --git a/compiler/testData/codegen/box/dataClasses/copy/constructorWithDefaultParam.kt b/compiler/testData/codegen/box/dataClasses/copy/constructorWithDefaultParam.kt
index cc275dc1698..5211d6889ae 100644
--- a/compiler/testData/codegen/box/dataClasses/copy/constructorWithDefaultParam.kt
+++ b/compiler/testData/codegen/box/dataClasses/copy/constructorWithDefaultParam.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 data class A(val a: Int = 1, val b: String = "$a") {}
 
 fun box() : String {
diff --git a/compiler/testData/codegen/box/dataClasses/equals/sameinstance.kt b/compiler/testData/codegen/box/dataClasses/equals/sameinstance.kt
index c59eb9fa6f5..04a1cfdc4f1 100644
--- a/compiler/testData/codegen/box/dataClasses/equals/sameinstance.kt
+++ b/compiler/testData/codegen/box/dataClasses/equals/sameinstance.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 data class A(val arg: Any? = null)
 
 fun box() : String {
diff --git a/compiler/testData/codegen/box/defaultArguments/constructor/annotation.kt b/compiler/testData/codegen/box/defaultArguments/constructor/annotation.kt
index 284ee8b99e3..f7e1453599d 100644
--- a/compiler/testData/codegen/box/defaultArguments/constructor/annotation.kt
+++ b/compiler/testData/codegen/box/defaultArguments/constructor/annotation.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 annotation class A(val a: Int = 0)
 
 @A fun test1() = 1
diff --git a/compiler/testData/codegen/box/defaultArguments/constructor/annotationWithEmptyArray.kt b/compiler/testData/codegen/box/defaultArguments/constructor/annotationWithEmptyArray.kt
index 1ab861b3469..1bf88131f44 100644
--- a/compiler/testData/codegen/box/defaultArguments/constructor/annotationWithEmptyArray.kt
+++ b/compiler/testData/codegen/box/defaultArguments/constructor/annotationWithEmptyArray.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 annotation class Anno(val x: Array<String> = emptyArray())
 
 @Anno fun test1() = 1
diff --git a/compiler/testData/codegen/box/defaultArguments/constructor/defArgs1.kt b/compiler/testData/codegen/box/defaultArguments/constructor/defArgs1.kt
index ab0de43c542..db8161f1911 100644
--- a/compiler/testData/codegen/box/defaultArguments/constructor/defArgs1.kt
+++ b/compiler/testData/codegen/box/defaultArguments/constructor/defArgs1.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 class A(val a: Int = 0)
 
 fun box(): String {
diff --git a/compiler/testData/codegen/box/defaultArguments/constructor/defArgs2.kt b/compiler/testData/codegen/box/defaultArguments/constructor/defArgs2.kt
index 5bbb4c4336b..9a22d318336 100644
--- a/compiler/testData/codegen/box/defaultArguments/constructor/defArgs2.kt
+++ b/compiler/testData/codegen/box/defaultArguments/constructor/defArgs2.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 class A(val a: Int = 0, val b: String = "a")
 
 fun box(): String {
diff --git a/compiler/testData/codegen/box/defaultArguments/constructor/kt3060.kt b/compiler/testData/codegen/box/defaultArguments/constructor/kt3060.kt
index 48a4b2bf976..ca4275a7403 100644
--- a/compiler/testData/codegen/box/defaultArguments/constructor/kt3060.kt
+++ b/compiler/testData/codegen/box/defaultArguments/constructor/kt3060.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 class Foo private constructor(val param: String = "OK") {
     companion object {
         val s = Foo()
diff --git a/compiler/testData/codegen/box/defaultArguments/private/primaryConstructor.kt b/compiler/testData/codegen/box/defaultArguments/private/primaryConstructor.kt
index a40accc9ef1..7b4ba263678 100644
--- a/compiler/testData/codegen/box/defaultArguments/private/primaryConstructor.kt
+++ b/compiler/testData/codegen/box/defaultArguments/private/primaryConstructor.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 var state: String = "Fail"
 
 class A private constructor(x: String = "OK") {
diff --git a/compiler/testData/codegen/box/defaultArguments/private/secondaryConstructor.kt b/compiler/testData/codegen/box/defaultArguments/private/secondaryConstructor.kt
index a163e393f15..ea7569669e5 100644
--- a/compiler/testData/codegen/box/defaultArguments/private/secondaryConstructor.kt
+++ b/compiler/testData/codegen/box/defaultArguments/private/secondaryConstructor.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 var state: String = "Fail"
 
 class A {
diff --git a/compiler/testData/codegen/box/delegatedProperty/castSetParameter.kt b/compiler/testData/codegen/box/delegatedProperty/castSetParameter.kt
index 5e70f87fef0..3d3e7a7806a 100644
--- a/compiler/testData/codegen/box/delegatedProperty/castSetParameter.kt
+++ b/compiler/testData/codegen/box/delegatedProperty/castSetParameter.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 import kotlin.reflect.KProperty
 
 class Delegate {
diff --git a/compiler/testData/codegen/box/functions/kt2270.kt b/compiler/testData/codegen/box/functions/kt2270.kt
index e294e3bb5fe..27d631e3d2f 100644
--- a/compiler/testData/codegen/box/functions/kt2270.kt
+++ b/compiler/testData/codegen/box/functions/kt2270.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 class A(
         val i : Int,
         val j : Int = i
diff --git a/compiler/testData/codegen/box/innerNested/superConstructorCall/objectExtendsClassDefaultArgument.kt b/compiler/testData/codegen/box/innerNested/superConstructorCall/objectExtendsClassDefaultArgument.kt
index a598f11ad9d..298b0ec9162 100644
--- a/compiler/testData/codegen/box/innerNested/superConstructorCall/objectExtendsClassDefaultArgument.kt
+++ b/compiler/testData/codegen/box/innerNested/superConstructorCall/objectExtendsClassDefaultArgument.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // KT-3581
 
 open class A(val result: String = "OK") {
diff --git a/compiler/testData/codegen/box/localClasses/anonymousObjectInParameterInitializer.kt b/compiler/testData/codegen/box/localClasses/anonymousObjectInParameterInitializer.kt
index 50d30afd3ac..e5a27ccdbc4 100644
--- a/compiler/testData/codegen/box/localClasses/anonymousObjectInParameterInitializer.kt
+++ b/compiler/testData/codegen/box/localClasses/anonymousObjectInParameterInitializer.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 class A(
         val a: String = object {
             override fun toString(): String = "OK"
diff --git a/compiler/testData/codegen/box/localClasses/localClassInParameterInitializer.kt b/compiler/testData/codegen/box/localClasses/localClassInParameterInitializer.kt
index 39dbd270243..2b5c62666e6 100644
--- a/compiler/testData/codegen/box/localClasses/localClassInParameterInitializer.kt
+++ b/compiler/testData/codegen/box/localClasses/localClassInParameterInitializer.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 class A(
         val a: String = {
             open class B() {
diff --git a/compiler/testData/codegen/box/privateConstructors/withArguments.kt b/compiler/testData/codegen/box/privateConstructors/withArguments.kt
index 315421482b7..a53517a81dd 100644
--- a/compiler/testData/codegen/box/privateConstructors/withArguments.kt
+++ b/compiler/testData/codegen/box/privateConstructors/withArguments.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // See also KT-6299
 public open class Outer private constructor(val s: String, val f: Boolean = true) {
     class Inner: Outer("xyz")
diff --git a/compiler/testData/codegen/box/privateConstructors/withDefault.kt b/compiler/testData/codegen/box/privateConstructors/withDefault.kt
index ceb7fb1d7bc..cb96e8dcb4b 100644
--- a/compiler/testData/codegen/box/privateConstructors/withDefault.kt
+++ b/compiler/testData/codegen/box/privateConstructors/withDefault.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // See also KT-6299
 public open class Outer private constructor(val x: Int = 0) {
     class Inner: Outer()
diff --git a/compiler/testData/codegen/box/privateConstructors/withLinkedClasses.kt b/compiler/testData/codegen/box/privateConstructors/withLinkedClasses.kt
index 7b34528038c..ff7f86f847a 100644
--- a/compiler/testData/codegen/box/privateConstructors/withLinkedClasses.kt
+++ b/compiler/testData/codegen/box/privateConstructors/withLinkedClasses.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // See also KT-6299
 public open class Outer private constructor(val p: Outer?) {
     object First: Outer(null)
diff --git a/compiler/testData/codegen/box/regressions/kt10143.kt b/compiler/testData/codegen/box/regressions/kt10143.kt
index b6486c7e70e..33a0cbbce16 100644
--- a/compiler/testData/codegen/box/regressions/kt10143.kt
+++ b/compiler/testData/codegen/box/regressions/kt10143.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // FILE: Outer.kt
 
 package another
diff --git a/compiler/testData/codegen/box/secondaryConstructors/callFromPrimaryWithNamedArgs.kt b/compiler/testData/codegen/box/secondaryConstructors/callFromPrimaryWithNamedArgs.kt
index 73316efbe86..30fc0208f2c 100644
--- a/compiler/testData/codegen/box/secondaryConstructors/callFromPrimaryWithNamedArgs.kt
+++ b/compiler/testData/codegen/box/secondaryConstructors/callFromPrimaryWithNamedArgs.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 open class A(val result: String) {
     constructor(x: Int = 11, y: Int = 22, z: Int = 33) : this("$x$y$z")
 }
diff --git a/compiler/testData/codegen/box/secondaryConstructors/callFromPrimaryWithOptionalArgs.kt b/compiler/testData/codegen/box/secondaryConstructors/callFromPrimaryWithOptionalArgs.kt
index 0500e0a5b99..71955e44537 100644
--- a/compiler/testData/codegen/box/secondaryConstructors/callFromPrimaryWithOptionalArgs.kt
+++ b/compiler/testData/codegen/box/secondaryConstructors/callFromPrimaryWithOptionalArgs.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 open class A(val result: String) {
     constructor(x: Int, y: Int = 99) : this("$x$y")
 }
diff --git a/compiler/testData/codegen/box/secondaryConstructors/clashingDefaultConstructors.kt b/compiler/testData/codegen/box/secondaryConstructors/clashingDefaultConstructors.kt
index 168a1828ef3..bad07d0d16b 100644
--- a/compiler/testData/codegen/box/secondaryConstructors/clashingDefaultConstructors.kt
+++ b/compiler/testData/codegen/box/secondaryConstructors/clashingDefaultConstructors.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 open class A(val x: String = "abc", val y: String = "efg") {
     constructor(x: String, y: String, z: Int): this(x, y + "#" + z.toString())
     
diff --git a/compiler/testData/codegen/box/secondaryConstructors/defaultParametersNotDuplicated.kt b/compiler/testData/codegen/box/secondaryConstructors/defaultParametersNotDuplicated.kt
index 48832ceca8c..409e42f9ec0 100644
--- a/compiler/testData/codegen/box/secondaryConstructors/defaultParametersNotDuplicated.kt
+++ b/compiler/testData/codegen/box/secondaryConstructors/defaultParametersNotDuplicated.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 var global = 0
 
 fun sideEffect() = global++
diff --git a/compiler/testData/codegen/box/smartCasts/smartCastInsideIf.kt b/compiler/testData/codegen/box/smartCasts/smartCastInsideIf.kt
index c7e979227a3..10d4a4c76c8 100644
--- a/compiler/testData/codegen/box/smartCasts/smartCastInsideIf.kt
+++ b/compiler/testData/codegen/box/smartCasts/smartCastInsideIf.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 class A(val s: String = "FAIL")
 
 private fun foo(a: A?, aOther: A?): A {
diff --git a/compiler/testData/codegen/box/typeInfo/ifOrWhenSpecialCall.kt b/compiler/testData/codegen/box/typeInfo/ifOrWhenSpecialCall.kt
index 3b1c3c94995..54ec5152a12 100644
--- a/compiler/testData/codegen/box/typeInfo/ifOrWhenSpecialCall.kt
+++ b/compiler/testData/codegen/box/typeInfo/ifOrWhenSpecialCall.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 interface Option<out T> {
     val s: String
 }
diff --git a/compiler/testData/codegen/box/typealias/kt15109.kt b/compiler/testData/codegen/box/typealias/kt15109.kt
index 9f11e0c7123..f6846176bf5 100644
--- a/compiler/testData/codegen/box/typealias/kt15109.kt
+++ b/compiler/testData/codegen/box/typealias/kt15109.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 open class A(private val s: String = "") {
     fun foo() = s
 }
diff --git a/compiler/testData/codegen/boxInline/defaultValues/33ParametersInConstructor.kt b/compiler/testData/codegen/boxInline/defaultValues/33ParametersInConstructor.kt
index 3d912c4c112..e0d10b91911 100644
--- a/compiler/testData/codegen/boxInline/defaultValues/33ParametersInConstructor.kt
+++ b/compiler/testData/codegen/boxInline/defaultValues/33ParametersInConstructor.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // FILE: 1.kt
 
 package test
diff --git a/js/js.translator/testData/box/defaultArguments/complexExpressionAsConstructorDefaultArgument.kt b/js/js.translator/testData/box/defaultArguments/complexExpressionAsConstructorDefaultArgument.kt
index 36b792c0bf3..39ae3adf1b8 100644
--- a/js/js.translator/testData/box/defaultArguments/complexExpressionAsConstructorDefaultArgument.kt
+++ b/js/js.translator/testData/box/defaultArguments/complexExpressionAsConstructorDefaultArgument.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // EXPECTED_REACHABLE_NODES: 1117
 package foo
 
diff --git a/js/js.translator/testData/box/defaultArguments/constructorCallWithDefArg1.kt b/js/js.translator/testData/box/defaultArguments/constructorCallWithDefArg1.kt
index 5edb29a5b51..40e2e1e6fc2 100644
--- a/js/js.translator/testData/box/defaultArguments/constructorCallWithDefArg1.kt
+++ b/js/js.translator/testData/box/defaultArguments/constructorCallWithDefArg1.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // EXPECTED_REACHABLE_NODES: 1112
 package foo
 
diff --git a/js/js.translator/testData/box/defaultArguments/defArgsWithSuperCall.kt b/js/js.translator/testData/box/defaultArguments/defArgsWithSuperCall.kt
index c9a02ef8f3c..df845a71579 100644
--- a/js/js.translator/testData/box/defaultArguments/defArgsWithSuperCall.kt
+++ b/js/js.translator/testData/box/defaultArguments/defArgsWithSuperCall.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // EXPECTED_REACHABLE_NODES: 1117
 package foo
 
diff --git a/js/js.translator/testData/box/defaultArguments/primarySuperConstructor.kt b/js/js.translator/testData/box/defaultArguments/primarySuperConstructor.kt
index 1ba2cc2b009..3a51128f569 100644
--- a/js/js.translator/testData/box/defaultArguments/primarySuperConstructor.kt
+++ b/js/js.translator/testData/box/defaultArguments/primarySuperConstructor.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // EXPECTED_REACHABLE_NODES: 1121
 package foo
 
diff --git a/js/js.translator/testData/box/defaultArguments/secondarySuperConstructor.kt b/js/js.translator/testData/box/defaultArguments/secondarySuperConstructor.kt
index 5bc9819c4f5..57e67ecc98b 100644
--- a/js/js.translator/testData/box/defaultArguments/secondarySuperConstructor.kt
+++ b/js/js.translator/testData/box/defaultArguments/secondarySuperConstructor.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // EXPECTED_REACHABLE_NODES: 1124
 package foo
 
diff --git a/js/js.translator/testData/box/inheritance/baseCallOrder.kt b/js/js.translator/testData/box/inheritance/baseCallOrder.kt
index 70fc1ac9b86..59887475f2b 100644
--- a/js/js.translator/testData/box/inheritance/baseCallOrder.kt
+++ b/js/js.translator/testData/box/inheritance/baseCallOrder.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // EXPECTED_REACHABLE_NODES: 1118
 package foo
 
diff --git a/js/js.translator/testData/box/initialize/complexPropertyInitializer.kt b/js/js.translator/testData/box/initialize/complexPropertyInitializer.kt
index 32f81370558..723e3a0fd4e 100644
--- a/js/js.translator/testData/box/initialize/complexPropertyInitializer.kt
+++ b/js/js.translator/testData/box/initialize/complexPropertyInitializer.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // EXPECTED_REACHABLE_NODES: 1113
 package foo
 
diff --git a/js/js.translator/testData/box/inline/statementsAfterReturn.kt b/js/js.translator/testData/box/inline/statementsAfterReturn.kt
index 5c06a296547..600abd5a13f 100644
--- a/js/js.translator/testData/box/inline/statementsAfterReturn.kt
+++ b/js/js.translator/testData/box/inline/statementsAfterReturn.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // EXPECTED_REACHABLE_NODES: 1150
 package foo
 
diff --git a/js/js.translator/testData/box/inlineEvaluationOrder/propertiesInitializationOrder.kt b/js/js.translator/testData/box/inlineEvaluationOrder/propertiesInitializationOrder.kt
index 83111f9f5d8..0f1e6cd37a0 100644
--- a/js/js.translator/testData/box/inlineEvaluationOrder/propertiesInitializationOrder.kt
+++ b/js/js.translator/testData/box/inlineEvaluationOrder/propertiesInitializationOrder.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // EXPECTED_REACHABLE_NODES: 1118
 package foo
 
diff --git a/js/js.translator/testData/box/nestedTypes/privateFieldNotOverridenInNestedSubclass.kt b/js/js.translator/testData/box/nestedTypes/privateFieldNotOverridenInNestedSubclass.kt
index 426d597d8ae..52675c42a61 100644
--- a/js/js.translator/testData/box/nestedTypes/privateFieldNotOverridenInNestedSubclass.kt
+++ b/js/js.translator/testData/box/nestedTypes/privateFieldNotOverridenInNestedSubclass.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // EXPECTED_REACHABLE_NODES: 1119
 package foo
 
diff --git a/js/js.translator/testData/box/reified/extensionMethod.kt b/js/js.translator/testData/box/reified/extensionMethod.kt
index d52edc20473..44b2372e4fd 100644
--- a/js/js.translator/testData/box/reified/extensionMethod.kt
+++ b/js/js.translator/testData/box/reified/extensionMethod.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // EXPECTED_REACHABLE_NODES: 1123
 package foo
 
diff --git a/js/js.translator/testData/box/reified/method.kt b/js/js.translator/testData/box/reified/method.kt
index f482935fb78..7caaf4624cb 100644
--- a/js/js.translator/testData/box/reified/method.kt
+++ b/js/js.translator/testData/box/reified/method.kt
@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: JS_IR
 // EXPECTED_REACHABLE_NODES: 1118
 package foo