diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/FieldInfo.java b/compiler/backend/src/org/jetbrains/kotlin/codegen/FieldInfo.java
index ad17c390f18..ab7ee603f0e 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/FieldInfo.java
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/FieldInfo.java
@@ -8,6 +8,7 @@ package org.jetbrains.kotlin.codegen;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.kotlin.builtins.CompanionObjectMapping;
+import org.jetbrains.kotlin.builtins.CompanionObjectMappingUtilsKt;
 import org.jetbrains.kotlin.codegen.state.KotlinTypeMapper;
 import org.jetbrains.kotlin.descriptors.ClassDescriptor;
 import org.jetbrains.kotlin.load.java.JvmAbi;
@@ -24,7 +25,7 @@ public class FieldInfo {
             throw new UnsupportedOperationException("Can't create singleton field for class: " + classDescriptor);
         }
 
-        if (isNonCompanionObject(classDescriptor) || CompanionObjectMapping.INSTANCE.isMappedIntrinsicCompanionObject(classDescriptor)) {
+        if (isNonCompanionObject(classDescriptor) || CompanionObjectMappingUtilsKt.isMappedIntrinsicCompanionObject(CompanionObjectMapping.INSTANCE, classDescriptor)) {
             return createSingletonViaInstance(classDescriptor, typeMapper, JvmAbi.INSTANCE_FIELD);
         }
 
diff --git a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/JvmCachedDeclarations.kt b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/JvmCachedDeclarations.kt
index 0275a7d96e7..c84b0ab0869 100644
--- a/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/JvmCachedDeclarations.kt
+++ b/compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/JvmCachedDeclarations.kt
@@ -13,7 +13,6 @@ import org.jetbrains.kotlin.backend.jvm.codegen.MethodSignatureMapper
 import org.jetbrains.kotlin.backend.jvm.codegen.isJvmInterface
 import org.jetbrains.kotlin.backend.jvm.ir.copyCorrespondingPropertyFrom
 import org.jetbrains.kotlin.backend.jvm.ir.replaceThisByStaticReference
-import org.jetbrains.kotlin.builtins.CompanionObjectMapping.isMappedIntrinsicCompanionObject
 import org.jetbrains.kotlin.config.LanguageFeature
 import org.jetbrains.kotlin.config.LanguageVersionSettings
 import org.jetbrains.kotlin.descriptors.Modality
@@ -28,6 +27,7 @@ import org.jetbrains.kotlin.ir.expressions.IrExpressionBody
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.load.java.JavaVisibilities
 import org.jetbrains.kotlin.load.java.JvmAbi
+import org.jetbrains.kotlin.load.java.JvmAbi.isMappedIntrinsicCompanionObject
 import org.jetbrains.kotlin.name.Name
 import org.jetbrains.kotlin.resolve.deprecation.DeprecationResolver
 
diff --git a/core/compiler.common/src/org/jetbrains/kotlin/builtins/CompanionObjectMapping.kt b/core/compiler.common/src/org/jetbrains/kotlin/builtins/CompanionObjectMapping.kt
new file mode 100644
index 00000000000..b1f223a8fef
--- /dev/null
+++ b/core/compiler.common/src/org/jetbrains/kotlin/builtins/CompanionObjectMapping.kt
@@ -0,0 +1,19 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.builtins
+
+import org.jetbrains.kotlin.name.ClassId
+
+object CompanionObjectMapping {
+    val classIds: Set<ClassId> = (
+            PrimitiveType.NUMBER_TYPES.map(StandardNames::getPrimitiveFqName) +
+                    StandardNames.FqNames.string.toSafe() +
+                    StandardNames.FqNames._boolean.toSafe() +
+                    StandardNames.FqNames._enum.toSafe()
+            ).mapTo(linkedSetOf(), ClassId::topLevel)
+
+    fun allClassesWithIntrinsicCompanions(): Set<ClassId> = classIds
+}
diff --git a/core/descriptors.jvm/src/org/jetbrains/kotlin/load/java/JvmAbi.java b/core/descriptors.jvm/src/org/jetbrains/kotlin/load/java/JvmAbi.java
index f4605974be5..eeaa7a29579 100644
--- a/core/descriptors.jvm/src/org/jetbrains/kotlin/load/java/JvmAbi.java
+++ b/core/descriptors.jvm/src/org/jetbrains/kotlin/load/java/JvmAbi.java
@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.load.java;
 
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.kotlin.builtins.CompanionObjectMapping;
+import org.jetbrains.kotlin.builtins.CompanionObjectMappingUtilsKt;
 import org.jetbrains.kotlin.descriptors.*;
 import org.jetbrains.kotlin.name.ClassId;
 import org.jetbrains.kotlin.name.FqName;
@@ -108,7 +109,7 @@ public final class JvmAbi {
     }
 
     public static boolean isMappedIntrinsicCompanionObject(@NotNull ClassDescriptor companionObject) {
-        return CompanionObjectMapping.INSTANCE.isMappedIntrinsicCompanionObject(companionObject);
+        return CompanionObjectMappingUtilsKt.isMappedIntrinsicCompanionObject(CompanionObjectMapping.INSTANCE, companionObject);
     }
 
     public static boolean hasJvmFieldAnnotation(@NotNull CallableMemberDescriptor memberDescriptor) {
diff --git a/core/descriptors/src/org/jetbrains/kotlin/builtins/CompanionObjectMapping.kt b/core/descriptors/src/org/jetbrains/kotlin/builtins/CompanionObjectMapping.kt
deleted file mode 100644
index b3727c21b5d..00000000000
--- a/core/descriptors/src/org/jetbrains/kotlin/builtins/CompanionObjectMapping.kt
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.kotlin.builtins
-
-import org.jetbrains.kotlin.descriptors.ClassDescriptor
-import org.jetbrains.kotlin.name.ClassId
-import org.jetbrains.kotlin.resolve.DescriptorUtils
-import org.jetbrains.kotlin.resolve.descriptorUtil.classId
-import java.util.*
-
-object CompanionObjectMapping {
-    private val classIds =
-        (PrimitiveType.NUMBER_TYPES.map(StandardNames::getPrimitiveFqName) +
-                StandardNames.FqNames.string.toSafe() +
-                StandardNames.FqNames._boolean.toSafe() +
-                StandardNames.FqNames._enum.toSafe()).mapTo(linkedSetOf<ClassId>(), ClassId::topLevel)
-
-    fun allClassesWithIntrinsicCompanions(): Set<ClassId> =
-        Collections.unmodifiableSet(classIds)
-
-    fun isMappedIntrinsicCompanionObject(classDescriptor: ClassDescriptor): Boolean =
-        DescriptorUtils.isCompanionObject(classDescriptor) && classDescriptor.classId?.outerClassId in classIds
-}
diff --git a/core/descriptors/src/org/jetbrains/kotlin/builtins/CompanionObjectMappingUtils.kt b/core/descriptors/src/org/jetbrains/kotlin/builtins/CompanionObjectMappingUtils.kt
new file mode 100644
index 00000000000..a444a565978
--- /dev/null
+++ b/core/descriptors/src/org/jetbrains/kotlin/builtins/CompanionObjectMappingUtils.kt
@@ -0,0 +1,13 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.builtins
+
+import org.jetbrains.kotlin.descriptors.ClassDescriptor
+import org.jetbrains.kotlin.resolve.DescriptorUtils
+import org.jetbrains.kotlin.resolve.descriptorUtil.classId
+
+fun CompanionObjectMapping.isMappedIntrinsicCompanionObject(classDescriptor: ClassDescriptor): Boolean =
+    DescriptorUtils.isCompanionObject(classDescriptor) && classDescriptor.classId?.outerClassId in classIds
diff --git a/core/reflection.jvm/src/kotlin/reflect/jvm/internal/KClassImpl.kt b/core/reflection.jvm/src/kotlin/reflect/jvm/internal/KClassImpl.kt
index 7b3d9a8d99e..151db381d6e 100644
--- a/core/reflection.jvm/src/kotlin/reflect/jvm/internal/KClassImpl.kt
+++ b/core/reflection.jvm/src/kotlin/reflect/jvm/internal/KClassImpl.kt
@@ -18,6 +18,7 @@ package kotlin.reflect.jvm.internal
 
 import org.jetbrains.kotlin.builtins.CompanionObjectMapping
 import org.jetbrains.kotlin.builtins.KotlinBuiltIns
+import org.jetbrains.kotlin.builtins.isMappedIntrinsicCompanionObject
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.incremental.components.NoLookupLocation
 import org.jetbrains.kotlin.load.java.JvmAbi
diff --git a/js/js.translator/src/org/jetbrains/kotlin/js/translate/intrinsic/objects/objectsIntrinsics.kt b/js/js.translator/src/org/jetbrains/kotlin/js/translate/intrinsic/objects/objectsIntrinsics.kt
index 65c926e9c57..a83d7ae527d 100644
--- a/js/js.translator/src/org/jetbrains/kotlin/js/translate/intrinsic/objects/objectsIntrinsics.kt
+++ b/js/js.translator/src/org/jetbrains/kotlin/js/translate/intrinsic/objects/objectsIntrinsics.kt
@@ -18,6 +18,7 @@ package org.jetbrains.kotlin.js.translate.intrinsic.objects
 
 import org.jetbrains.kotlin.builtins.CompanionObjectMapping
 import org.jetbrains.kotlin.builtins.StandardNames
+import org.jetbrains.kotlin.builtins.isMappedIntrinsicCompanionObject
 import org.jetbrains.kotlin.descriptors.ClassDescriptor
 import org.jetbrains.kotlin.js.backend.ast.JsExpression
 import org.jetbrains.kotlin.js.translate.context.TranslationContext