diff --git a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/ConversionUtils.kt b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/ConversionUtils.kt
index d3ac3a60d00..94216d6695c 100644
--- a/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/ConversionUtils.kt
+++ b/compiler/fir/fir2ir/src/org/jetbrains/kotlin/fir/backend/ConversionUtils.kt
@@ -8,6 +8,8 @@ package org.jetbrains.kotlin.fir.backend
 import com.intellij.psi.PsiCompiledElement
 import org.jetbrains.kotlin.fir.FirElement
 import org.jetbrains.kotlin.fir.FirSession
+import org.jetbrains.kotlin.fir.expressions.FirConstExpression
+import org.jetbrains.kotlin.fir.expressions.FirConstKind
 import org.jetbrains.kotlin.fir.psi
 import org.jetbrains.kotlin.fir.references.FirReference
 import org.jetbrains.kotlin.fir.references.FirResolvedNamedReference
@@ -18,6 +20,7 @@ import org.jetbrains.kotlin.fir.symbols.impl.*
 import org.jetbrains.kotlin.fir.types.*
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.descriptors.IrBuiltIns
+import org.jetbrains.kotlin.ir.expressions.IrConstKind
 import org.jetbrains.kotlin.ir.symbols.*
 import org.jetbrains.kotlin.ir.types.IrErrorType
 import org.jetbrains.kotlin.ir.types.IrType
@@ -190,3 +193,25 @@ fun FirVariableSymbol<*>.toBackingFieldSymbol(declarationStorage: Fir2IrDeclarat
 fun FirVariableSymbol<*>.toValueSymbol(declarationStorage: Fir2IrDeclarationStorage): IrSymbol {
     return declarationStorage.getIrValueSymbol(this)
 }
+
+fun FirConstExpression<*>.getIrConstKind(): IrConstKind<*> = when (kind) {
+    FirConstKind.IntegerLiteral -> {
+        val type = typeRef.coneTypeUnsafe<ConeIntegerLiteralType>()
+        type.getApproximatedType().toConstKind()!!.toIrConstKind()
+    }
+    else -> kind.toIrConstKind()
+}
+
+private fun FirConstKind<*>.toIrConstKind(): IrConstKind<*> = when (this) {
+    FirConstKind.Null -> IrConstKind.Null
+    FirConstKind.Boolean -> IrConstKind.Boolean
+    FirConstKind.Char -> IrConstKind.Char
+    FirConstKind.Byte -> IrConstKind.Byte
+    FirConstKind.Short -> IrConstKind.Short
+    FirConstKind.Int -> IrConstKind.Int
+    FirConstKind.Long -> IrConstKind.Long
+    FirConstKind.String -> IrConstKind.String
+    FirConstKind.Float -> IrConstKind.Float
+    FirConstKind.Double -> IrConstKind.Double
+    FirConstKind.IntegerLiteral -> throw IllegalArgumentException()
+}
diff --git a/compiler/fir/resolve/build.gradle.kts b/compiler/fir/resolve/build.gradle.kts
index f968f307881..74b8cad5b6b 100644
--- a/compiler/fir/resolve/build.gradle.kts
+++ b/compiler/fir/resolve/build.gradle.kts
@@ -13,6 +13,7 @@ dependencies {
     compile(project(":core:deserialization"))
     compile(project(":compiler:fir:cones"))
     compile(project(":compiler:fir:tree"))
+    compile(project(":compiler:frontend"))
     compile("org.jetbrains.kotlinx:kotlinx-collections-immutable:0.2")
 
     compileOnly(project(":kotlin-reflect-api"))
diff --git a/compiler/fir/tree/build.gradle.kts b/compiler/fir/tree/build.gradle.kts
index 3505a68c987..43aa2ee46dc 100644
--- a/compiler/fir/tree/build.gradle.kts
+++ b/compiler/fir/tree/build.gradle.kts
@@ -1,10 +1,5 @@
 import org.jetbrains.kotlin.ideaExt.idea
 
-/*
- * Copyright 2000-2018 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.
- */
-
 plugins {
     kotlin("jvm")
     id("jps-compatible")
@@ -14,7 +9,8 @@ dependencies {
     compile(project(":compiler:frontend.common"))
     compile(project(":core:descriptors"))
     compile(project(":compiler:fir:cones"))
-    compile(project(":compiler:ir.tree"))
+    compile(project(":compiler:resolution"))
+
     // Necessary only to store bound PsiElement inside FirElement
     compileOnly(intellijCoreDep()) { includeJars("intellij-core") }
 }
diff --git a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirConstKind.kt b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirConstKind.kt
index edef463cd53..a767b7de6f9 100644
--- a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirConstKind.kt
+++ b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirConstKind.kt
@@ -5,11 +5,6 @@
 
 package org.jetbrains.kotlin.fir.expressions
 
-import org.jetbrains.kotlin.fir.types.ConeIntegerLiteralType
-import org.jetbrains.kotlin.fir.types.coneTypeUnsafe
-import org.jetbrains.kotlin.fir.types.toConstKind
-import org.jetbrains.kotlin.ir.expressions.IrConstKind
-
 sealed class FirConstKind<T>(val asString: kotlin.String) {
     object Null : FirConstKind<Nothing?>("Null")
     object Boolean : FirConstKind<kotlin.Boolean>("Boolean")
@@ -25,25 +20,3 @@ sealed class FirConstKind<T>(val asString: kotlin.String) {
 
     override fun toString() = asString
 }
-
-fun FirConstExpression<*>.getIrConstKind(): IrConstKind<*> = when (kind) {
-    FirConstKind.IntegerLiteral -> {
-        val type = typeRef.coneTypeUnsafe<ConeIntegerLiteralType>()
-        type.getApproximatedType().toConstKind()!!.toIrConstKind()
-    }
-    else -> kind.toIrConstKind()
-}
-
-private fun FirConstKind<*>.toIrConstKind(): IrConstKind<*> = when (this) {
-    FirConstKind.Null -> IrConstKind.Null
-    FirConstKind.Boolean -> IrConstKind.Boolean
-    FirConstKind.Char -> IrConstKind.Char
-    FirConstKind.Byte -> IrConstKind.Byte
-    FirConstKind.Short -> IrConstKind.Short
-    FirConstKind.Int -> IrConstKind.Int
-    FirConstKind.Long -> IrConstKind.Long
-    FirConstKind.String -> IrConstKind.String
-    FirConstKind.Float -> IrConstKind.Float
-    FirConstKind.Double -> IrConstKind.Double
-    FirConstKind.IntegerLiteral -> throw IllegalArgumentException()
-}
\ No newline at end of file
diff --git a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirExpressionUtil.kt b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirExpressionUtil.kt
index 6d9b6b322a3..857be7d6f50 100644
--- a/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirExpressionUtil.kt
+++ b/compiler/fir/tree/src/org/jetbrains/kotlin/fir/expressions/FirExpressionUtil.kt
@@ -14,7 +14,6 @@ import org.jetbrains.kotlin.fir.references.FirResolvedNamedReference
 import org.jetbrains.kotlin.fir.symbols.impl.FirCallableSymbol
 import org.jetbrains.kotlin.fir.types.ConeClassLikeType
 import org.jetbrains.kotlin.fir.types.FirResolvedTypeRef
-import org.jetbrains.kotlin.ir.expressions.IrConstKind
 import org.jetbrains.kotlin.name.ClassId
 
 inline val FirAnnotationCall.coneClassLikeType: ConeClassLikeType?
diff --git a/compiler/fir/tree/tree-generator/build.gradle.kts b/compiler/fir/tree/tree-generator/build.gradle.kts
index 01de96a48f2..b40d885c17c 100644
--- a/compiler/fir/tree/tree-generator/build.gradle.kts
+++ b/compiler/fir/tree/tree-generator/build.gradle.kts
@@ -1,8 +1,3 @@
-/*
- * Copyright 2000-2018 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.
- */
-
 import tasks.WriteCopyrightToFile
 
 plugins {
@@ -19,7 +14,7 @@ dependencies {
     compile(project(":compiler:frontend.common"))
     compile(project(":core:descriptors"))
     compile(project(":compiler:fir:cones"))
-    compile(project(":compiler:ir.tree"))
+    compile(project(":compiler:resolution"))
 
     compileOnly(intellijCoreDep()) { includeJars("intellij-core", "guava", rootProject = rootProject) }
     compileOnly(intellijDep()) {
@@ -47,4 +42,3 @@ sourceSets {
     }
     "test" {}
 }
-