diff --git a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenTestGenerated.java b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenTestGenerated.java
index cb6e96f07df..1abe25c80aa 100644
--- a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenTestGenerated.java
+++ b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBlackBoxCodegenTestGenerated.java
@@ -18541,6 +18541,12 @@ public class FirLightTreeBlackBoxCodegenTestGenerated extends AbstractFirLightTr
             runTest("compiler/testData/codegen/box/fir/SuspendFunctionReference.kt");
         }
 
+        @Test
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
+
         @Test
         @TestMetadata("unqualifiedEnum.kt")
         public void testUnqualifiedEnum() throws Exception {
diff --git a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBlackBoxCodegenTestGenerated.java b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBlackBoxCodegenTestGenerated.java
index d37c9e6332b..2433363e74a 100644
--- a/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBlackBoxCodegenTestGenerated.java
+++ b/compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBlackBoxCodegenTestGenerated.java
@@ -18541,6 +18541,12 @@ public class FirPsiBlackBoxCodegenTestGenerated extends AbstractFirPsiBlackBoxCo
             runTest("compiler/testData/codegen/box/fir/SuspendFunctionReference.kt");
         }
 
+        @Test
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
+
         @Test
         @TestMetadata("unqualifiedEnum.kt")
         public void testUnqualifiedEnum() throws Exception {
diff --git a/compiler/testData/codegen/box/fir/toLong.kt b/compiler/testData/codegen/box/fir/toLong.kt
new file mode 100644
index 00000000000..82d8ca69798
--- /dev/null
+++ b/compiler/testData/codegen/box/fir/toLong.kt
@@ -0,0 +1,20 @@
+// ISSUE: KT-57986
+// IGNORE_BACKEND_K2: JS_IR, NATIVE
+
+// MODULE: m1
+// FILE: m1.kt
+
+fun foo() = 42
+
+val x = foo()
+val y = x.toLong()
+
+// MODULE: m2(m1)
+// FILE: m2.kt
+
+fun box(): String {
+    if (y == 42L) {
+        return "OK"
+    }
+    return y.toString()
+}
diff --git a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java
index e819c2227a5..0713e21789d 100644
--- a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java
+++ b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/BlackBoxCodegenTestGenerated.java
@@ -17664,6 +17664,12 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
         public void testSuspendFunctionReference() throws Exception {
             runTest("compiler/testData/codegen/box/fir/SuspendFunctionReference.kt");
         }
+
+        @Test
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
     }
 
     @Nested
diff --git a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java
index cf8a5d9cb0c..1d2a12abe08 100644
--- a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java
+++ b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenTestGenerated.java
@@ -18541,6 +18541,12 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/fir/SuspendFunctionReference.kt");
         }
 
+        @Test
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
+
         @Test
         @TestMetadata("unqualifiedEnum.kt")
         public void testUnqualifiedEnum() throws Exception {
diff --git a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenWithIrInlinerTestGenerated.java b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenWithIrInlinerTestGenerated.java
index 41f0b9953ce..a96d2ac0338 100644
--- a/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenWithIrInlinerTestGenerated.java
+++ b/compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBlackBoxCodegenWithIrInlinerTestGenerated.java
@@ -18541,6 +18541,12 @@ public class IrBlackBoxCodegenWithIrInlinerTestGenerated extends AbstractIrBlack
             runTest("compiler/testData/codegen/box/fir/SuspendFunctionReference.kt");
         }
 
+        @Test
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
+
         @Test
         @TestMetadata("unqualifiedEnum.kt")
         public void testUnqualifiedEnum() throws Exception {
diff --git a/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java b/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
index dc20bb1543c..7f3bcc8ae71 100644
--- a/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
+++ b/compiler/tests-gen/org/jetbrains/kotlin/codegen/LightAnalysisModeTestGenerated.java
@@ -14632,6 +14632,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
         public void testSuspendFunctionReference() throws Exception {
             runTest("compiler/testData/codegen/box/fir/SuspendFunctionReference.kt");
         }
+
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
     }
 
     @TestMetadata("compiler/testData/codegen/box/fullJdk")
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/JsCodegenBoxTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/JsCodegenBoxTestGenerated.java
index 826ee039280..ba5c9c997e1 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/JsCodegenBoxTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/JsCodegenBoxTestGenerated.java
@@ -13604,6 +13604,12 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
         public void testNestedClassTypeParameterDeserialization() throws Exception {
             runTest("compiler/testData/codegen/box/fir/nestedClassTypeParameterDeserialization.kt");
         }
+
+        @Test
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
     }
 
     @Nested
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsCodegenBoxTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsCodegenBoxTestGenerated.java
index 2a5834a7916..88eedd5e537 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsCodegenBoxTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/fir/FirJsCodegenBoxTestGenerated.java
@@ -13700,6 +13700,12 @@ public class FirJsCodegenBoxTestGenerated extends AbstractFirJsCodegenBoxTest {
         public void testNestedClassTypeParameterDeserialization() throws Exception {
             runTest("compiler/testData/codegen/box/fir/nestedClassTypeParameterDeserialization.kt");
         }
+
+        @Test
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
     }
 
     @Nested
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsCodegenBoxTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsCodegenBoxTestGenerated.java
index ff1f6ef89ca..2f14e177fc0 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsCodegenBoxTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsCodegenBoxTestGenerated.java
@@ -13700,6 +13700,12 @@ public class IrJsCodegenBoxTestGenerated extends AbstractIrJsCodegenBoxTest {
         public void testNestedClassTypeParameterDeserialization() throws Exception {
             runTest("compiler/testData/codegen/box/fir/nestedClassTypeParameterDeserialization.kt");
         }
+
+        @Test
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
     }
 
     @Nested
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsES6CodegenBoxTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsES6CodegenBoxTestGenerated.java
index 81ba076c55c..c5784564f4d 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsES6CodegenBoxTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/ir/IrJsES6CodegenBoxTestGenerated.java
@@ -13700,6 +13700,12 @@ public class IrJsES6CodegenBoxTestGenerated extends AbstractIrJsES6CodegenBoxTes
         public void testNestedClassTypeParameterDeserialization() throws Exception {
             runTest("compiler/testData/codegen/box/fir/nestedClassTypeParameterDeserialization.kt");
         }
+
+        @Test
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
     }
 
     @Nested
diff --git a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/FirNativeCodegenBoxTestGenerated.java b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/FirNativeCodegenBoxTestGenerated.java
index 16aa71eb689..293c8fd2278 100644
--- a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/FirNativeCodegenBoxTestGenerated.java
+++ b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/FirNativeCodegenBoxTestGenerated.java
@@ -15093,6 +15093,12 @@ public class FirNativeCodegenBoxTestGenerated extends AbstractNativeCodegenBoxTe
             public void testNestedClassTypeParameterDeserialization() throws Exception {
                 runTest("compiler/testData/codegen/box/fir/nestedClassTypeParameterDeserialization.kt");
             }
+
+            @Test
+            @TestMetadata("toLong.kt")
+            public void testToLong() throws Exception {
+                runTest("compiler/testData/codegen/box/fir/toLong.kt");
+            }
         }
 
         @Nested
diff --git a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/FirNativeCodegenBoxTestNoPLGenerated.java b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/FirNativeCodegenBoxTestNoPLGenerated.java
index 11a105e8c9a..a1bd054c998 100644
--- a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/FirNativeCodegenBoxTestNoPLGenerated.java
+++ b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/FirNativeCodegenBoxTestNoPLGenerated.java
@@ -15445,6 +15445,12 @@ public class FirNativeCodegenBoxTestNoPLGenerated extends AbstractNativeCodegenB
             public void testNestedClassTypeParameterDeserialization() throws Exception {
                 runTest("compiler/testData/codegen/box/fir/nestedClassTypeParameterDeserialization.kt");
             }
+
+            @Test
+            @TestMetadata("toLong.kt")
+            public void testToLong() throws Exception {
+                runTest("compiler/testData/codegen/box/fir/toLong.kt");
+            }
         }
 
         @Nested
diff --git a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/NativeCodegenBoxTestGenerated.java b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/NativeCodegenBoxTestGenerated.java
index bfd460a4b78..1a584fde4b7 100644
--- a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/NativeCodegenBoxTestGenerated.java
+++ b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/NativeCodegenBoxTestGenerated.java
@@ -14917,6 +14917,12 @@ public class NativeCodegenBoxTestGenerated extends AbstractNativeCodegenBoxTest
             public void testNestedClassTypeParameterDeserialization() throws Exception {
                 runTest("compiler/testData/codegen/box/fir/nestedClassTypeParameterDeserialization.kt");
             }
+
+            @Test
+            @TestMetadata("toLong.kt")
+            public void testToLong() throws Exception {
+                runTest("compiler/testData/codegen/box/fir/toLong.kt");
+            }
         }
 
         @Nested
diff --git a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/NativeCodegenBoxTestNoPLGenerated.java b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/NativeCodegenBoxTestNoPLGenerated.java
index b6e35766efb..84864e47de6 100644
--- a/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/NativeCodegenBoxTestNoPLGenerated.java
+++ b/native/native.tests/tests-gen/org/jetbrains/kotlin/konan/blackboxtest/NativeCodegenBoxTestNoPLGenerated.java
@@ -15269,6 +15269,12 @@ public class NativeCodegenBoxTestNoPLGenerated extends AbstractNativeCodegenBoxT
             public void testNestedClassTypeParameterDeserialization() throws Exception {
                 runTest("compiler/testData/codegen/box/fir/nestedClassTypeParameterDeserialization.kt");
             }
+
+            @Test
+            @TestMetadata("toLong.kt")
+            public void testToLong() throws Exception {
+                runTest("compiler/testData/codegen/box/fir/toLong.kt");
+            }
         }
 
         @Nested
diff --git a/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/IrCodegenBoxWasmTestGenerated.java b/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/IrCodegenBoxWasmTestGenerated.java
index 08aa1d1fed6..23355b939ec 100644
--- a/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/IrCodegenBoxWasmTestGenerated.java
+++ b/wasm/wasm.tests/tests-gen/org/jetbrains/kotlin/wasm/test/IrCodegenBoxWasmTestGenerated.java
@@ -12157,6 +12157,11 @@ public class IrCodegenBoxWasmTestGenerated extends AbstractIrCodegenBoxWasmTest
         public void testNestedClassTypeParameterDeserialization() throws Exception {
             runTest("compiler/testData/codegen/box/fir/nestedClassTypeParameterDeserialization.kt");
         }
+
+        @TestMetadata("toLong.kt")
+        public void testToLong() throws Exception {
+            runTest("compiler/testData/codegen/box/fir/toLong.kt");
+        }
     }
 
     @TestMetadata("compiler/testData/codegen/box/fullJdk")