JVM IR: do not mangle property accessors of unsigned types in annotations

Before this change, we incorrectly mangled the names of annotation
methods (e.g. `getI-pVg5ArA` instead of `i`) because the isSpecial
condition was false.

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/MethodSignatureMapper.kt

@@ -81,7 +81,7 @@ class MethodSignatureMapper(private val context: JvmBackendContext) {
         }
 
         val property = (function as? IrSimpleFunction)?.correspondingPropertySymbol?.owner
-        if (property != null && function.name.isSpecial) {
+        if (property != null) {
             val propertyName = property.name.asString()
             val propertyParent = property.parentAsClass
             if (propertyParent.isAnnotationClass)
@@ -93,8 +93,10 @@ class MethodSignatureMapper(private val context: JvmBackendContext) {
             if ((propertyParent.isEnumClass || propertyParent.isEnumEntry) && (propertyName == "name" || propertyName == "ordinal"))
                 return propertyName
 
-            val accessorName = if (function.isGetter) JvmAbi.getterName(propertyName) else JvmAbi.setterName(propertyName)
+            if (function.name.isSpecial) {
-            return mangleMemberNameIfRequired(accessorName, function)
+                val accessorName = if (function.isGetter) JvmAbi.getterName(propertyName) else JvmAbi.setterName(propertyName)
+                return mangleMemberNameIfRequired(accessorName, function)
+            }
         }
 
         return mangleMemberNameIfRequired(function.name.asString(), function)

compiler/testData/codegen/bytecodeListing/annotations/unsignedTypes.kt

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+
+annotation class Anno(
+    val b: UByte,
+    val i: UInt,
+    val l: ULong,
+    val s: UShort,
+)

compiler/testData/codegen/bytecodeListing/annotations/unsignedTypes.txt

@@ -0,0 +1,9 @@
+@java.lang.annotation.Retention
+@kotlin.Metadata
+public annotation class Anno {
+    // source: 'unsignedTypes.kt'
+    public abstract method b(): byte
+    public abstract method i(): int
+    public abstract method l(): long
+    public abstract method s(): short
+}

compiler/tests/org/jetbrains/kotlin/codegen/BytecodeListingTestGenerated.java

@@ -230,6 +230,11 @@ public class BytecodeListingTestGenerated extends AbstractBytecodeListingTest {
         public void testOnReceiver() throws Exception {
             runTest("compiler/testData/codegen/bytecodeListing/annotations/onReceiver.kt");
         }
+
+        @TestMetadata("unsignedTypes.kt")
+        public void testUnsignedTypes() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeListing/annotations/unsignedTypes.kt");
+        }
     }
 
     @TestMetadata("compiler/testData/codegen/bytecodeListing/collectionStubs")

compiler/tests/org/jetbrains/kotlin/codegen/ir/IrBytecodeListingTestGenerated.java

@@ -230,6 +230,11 @@ public class IrBytecodeListingTestGenerated extends AbstractIrBytecodeListingTes
         public void testOnReceiver() throws Exception {
             runTest("compiler/testData/codegen/bytecodeListing/annotations/onReceiver.kt");
         }
+
+        @TestMetadata("unsignedTypes.kt")
+        public void testUnsignedTypes() throws Exception {
+            runTest("compiler/testData/codegen/bytecodeListing/annotations/unsignedTypes.kt");
+        }
     }
 
     @TestMetadata("compiler/testData/codegen/bytecodeListing/collectionStubs")