JVM IR: fix behavior of Enum.entries for unlowered enums

#KT-57671 Fixed

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirLightTreeBytecodeTextTestGenerated.java

@@ -2253,6 +2253,18 @@ public class FirLightTreeBytecodeTextTestGenerated extends AbstractFirLightTreeB
         public void testKt18731_2() throws Exception {
             runTest("compiler/testData/codegen/bytecodeText/enum/kt18731_2.kt");
         }
+
+        @Test
+        @TestMetadata("kt57671_1.kt")
+        public void testKt57671_1() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/enum/kt57671_1.kt");
+        }
+
+        @Test
+        @TestMetadata("kt57671_2.kt")
+        public void testKt57671_2() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/enum/kt57671_2.kt");
+        }
     }
 
     @Nested

compiler/fir/fir2ir/tests-gen/org/jetbrains/kotlin/test/runners/codegen/FirPsiBytecodeTextTestGenerated.java

@@ -2253,6 +2253,18 @@ public class FirPsiBytecodeTextTestGenerated extends AbstractFirPsiBytecodeTextT
         public void testKt18731_2() throws Exception {
             runTest("compiler/testData/codegen/bytecodeText/enum/kt18731_2.kt");
         }
+
+        @Test
+        @TestMetadata("kt57671_1.kt")
+        public void testKt57671_1() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/enum/kt57671_1.kt");
+        }
+
+        @Test
+        @TestMetadata("kt57671_2.kt")
+        public void testKt57671_2() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/enum/kt57671_2.kt");
+        }
     }
 
     @Nested

compiler/ir/backend.jvm/lower/src/org/jetbrains/kotlin/backend/jvm/lower/EnumExternalEntriesLowering.kt

@@ -11,6 +11,7 @@ import org.jetbrains.kotlin.backend.common.lower.createIrBuilder
 import org.jetbrains.kotlin.backend.common.phaser.makeIrFilePhase
 import org.jetbrains.kotlin.backend.jvm.JvmBackendContext
 import org.jetbrains.kotlin.backend.jvm.JvmLoweredDeclarationOrigin
+import org.jetbrains.kotlin.backend.jvm.ir.isInCurrentModule
 import org.jetbrains.kotlin.config.LanguageFeature
 import org.jetbrains.kotlin.ir.IrStatement
 import org.jetbrains.kotlin.ir.builders.declarations.addField
@@ -111,13 +112,20 @@ class EnumExternalEntriesLowering(private val context: JvmBackendContext) : File
         return IrGetFieldImpl(expression.startOffset, expression.endOffset, field.symbol, field.type)
     }
 
-    private fun IrClass.hasEnumEntriesFunction() = functions.any {
-        it.name.toString() == "<get-entries>"
-                && it.dispatchReceiverParameter == null
-                && it.extensionReceiverParameter == null
-                && it.valueParameters.isEmpty()
+    private fun IrClass.hasEnumEntriesFunction(): Boolean {
+        // Enums from other modules are always loaded with a property `entries` which has a getter `<get-entries>`.
+        // Enums from the current module will have a property `entries` if they are unlowered yet (i.e. enum is declared in another file
+        // which will be lowered after the file with the call site), or a function `<get-entries>` if they are already lowered.
+        return functions.any { it.isGetEntries() }
+                || (properties.any { it.getter?.isGetEntries() == true } && isInCurrentModule())
     }
 
+    private fun IrSimpleFunction.isGetEntries(): Boolean =
+        name.toString() == "<get-entries>"
+                && dispatchReceiverParameter == null
+                && extensionReceiverParameter == null
+                && valueParameters.isEmpty()
+
     override fun visitClassNew(declaration: IrClass): IrStatement {
         val oldState = state
         val mappingState = EntriesMappingState()

compiler/testData/codegen/bytecodeText/enum/kt57671_1.kt

@@ -0,0 +1,13 @@
+// TARGET_BACKEND: JVM_IR
+// FILE: 1.kt
+
+enum class E
+
+// FILE: 2.kt
+
+@OptIn(ExperimentalStdlibApi::class)
+fun test() {
+    E.entries
+}
+
+// 0 EntriesMappings

compiler/testData/codegen/bytecodeText/enum/kt57671_2.kt

@@ -0,0 +1,13 @@
+// TARGET_BACKEND: JVM_IR
+// FILE: 1.kt
+
+@OptIn(ExperimentalStdlibApi::class)
+fun test() {
+    E.entries
+}
+
+// FILE: 2.kt
+
+enum class E
+
+// 0 EntriesMappings

compiler/tests-common-new/tests-gen/org/jetbrains/kotlin/test/runners/codegen/IrBytecodeTextTestGenerated.java

@@ -2253,6 +2253,18 @@ public class IrBytecodeTextTestGenerated extends AbstractIrBytecodeTextTest {
         public void testKt18731_2() throws Exception {
             runTest("compiler/testData/codegen/bytecodeText/enum/kt18731_2.kt");
         }
+
+        @Test
+        @TestMetadata("kt57671_1.kt")
+        public void testKt57671_1() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/enum/kt57671_1.kt");
+        }
+
+        @Test
+        @TestMetadata("kt57671_2.kt")
+        public void testKt57671_2() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeText/enum/kt57671_2.kt");
+        }
     }
 
     @Nested