diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/StringConcatGenerator.kt b/compiler/backend/src/org/jetbrains/kotlin/codegen/StringConcatGenerator.kt
index 4e6f8e4404f..98b4e7d931c 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/StringConcatGenerator.kt
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/StringConcatGenerator.kt
@@ -38,7 +38,7 @@ class StringConcatGenerator(val mode: JvmStringConcat, val mv: InstructionAdapte
             value.encodedUTF8Size()
         }
 
-        fun fitEncodingLimit() = encodedUTF8Size <= STRING_UTF8_ENCODING_BYTE_LIMIT
+        fun fitEncodingLimit() = if (value.isDefinitelyFitEncodingLimit()) true else encodedUTF8Size <= STRING_UTF8_ENCODING_BYTE_LIMIT
     }
 
     private val items = arrayListOf<Item>()
diff --git a/compiler/backend/src/org/jetbrains/kotlin/codegen/codegenUtil.kt b/compiler/backend/src/org/jetbrains/kotlin/codegen/codegenUtil.kt
index 2a15e8b0022..7eeca3d51df 100644
--- a/compiler/backend/src/org/jetbrains/kotlin/codegen/codegenUtil.kt
+++ b/compiler/backend/src/org/jetbrains/kotlin/codegen/codegenUtil.kt
@@ -682,11 +682,11 @@ fun linkedLabel(): Label = LabelNode().linkWithLabel().label
 // Strings in constant pool contain at most 2^16-1 = 65535 bytes.
 const val STRING_UTF8_ENCODING_BYTE_LIMIT: Int = 65535
 
-fun splitStringConstant(value: String): List<String> {
-    val length = value.length
+//Each CHAR could be encoded maximum in 3 bytes
+fun String.isDefinitelyFitEncodingLimit() = length <= STRING_UTF8_ENCODING_BYTE_LIMIT / 3
 
-    //Each CHAR could be encoded maximum in 3 bytes
-    return if (length <= STRING_UTF8_ENCODING_BYTE_LIMIT / 3) {
+fun splitStringConstant(value: String): List<String> {
+    return if (value.isDefinitelyFitEncodingLimit()) {
         listOf(value)
     } else {
         val result = arrayListOf<String>()
@@ -696,6 +696,7 @@ fun splitStringConstant(value: String): List<String> {
         var accumulatedSize = 0
         var charOffsetInString = 0
         var lastStringBeginning = 0
+        val length = value.length
         while (charOffsetInString < length) {
             val charCode = value[charOffsetInString].code
             val encodedCharSize = when {