KT-33119 Generate IINC for primitive types only

compiler/backend/src/org/jetbrains/kotlin/codegen/StackValue.java

@@ -15,6 +15,7 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.kotlin.builtins.KotlinBuiltIns;
 import org.jetbrains.kotlin.builtins.PrimitiveType;
+import org.jetbrains.kotlin.builtins.UnsignedTypes;
 import org.jetbrains.kotlin.codegen.binding.CodegenBinding;
 import org.jetbrains.kotlin.codegen.coroutines.CoroutineCodegenUtilKt;
 import org.jetbrains.kotlin.codegen.intrinsics.IntrinsicMethods;
@@ -794,8 +795,11 @@ public abstract class StackValue {
             ResolvedCall resolvedCall,
             @NotNull ExpressionCodegen codegen
     ) {
-        if (stackValue instanceof StackValue.Local && Type.INT_TYPE == stackValue.type) {
+        KotlinType kotlinType = stackValue.kotlinType;
-            return preIncrementForLocalVar(((StackValue.Local) stackValue).index, delta, stackValue.kotlinType);
+        if (stackValue instanceof StackValue.Local && Type.INT_TYPE == stackValue.type &&
+            kotlinType != null && KotlinBuiltIns.isPrimitiveType(kotlinType)
+        ) {
+            return preIncrementForLocalVar(((StackValue.Local) stackValue).index, delta, kotlinType);
         }
         return new PrefixIncrement(type, stackValue, resolvedCall, codegen);
     }

compiler/testData/codegen/box/inlineClasses/kt33119.kt

@@ -0,0 +1,18 @@
+// IGNORE_BACKEND_FIR: JVM_IR
+
+inline class WrappingInt(val value: Int) {
+    operator fun inc(): WrappingInt = plus(1)
+    operator fun plus(num: Int): WrappingInt = WrappingInt((value + num) and 0xFFFF)
+}
+
+fun box(): String {
+    var x = WrappingInt(65535)
+    x++
+    if (x.value != 0) throw AssertionError("x++: ${x.value}")
+
+    var y = WrappingInt(65535)
+    ++y
+    if (y.value != 0) throw AssertionError("++y: ${y.value}")
+
+    return "OK"
+}

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

@@ -13408,6 +13408,11 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/inlineClasses/kt28920_javaPrimitiveType.kt");
         }
 
+        @TestMetadata("kt33119.kt")
+        public void testKt33119() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/kt33119.kt");
+        }
+
         @TestMetadata("kt34268.kt")
         public void testKt34268() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/kt34268.kt");

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

@@ -13413,6 +13413,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/inlineClasses/kt28920_javaPrimitiveType.kt");
         }
 
+        @TestMetadata("kt33119.kt")
+        public void testKt33119() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/kt33119.kt");
+        }
+
         @TestMetadata("kt34268.kt")
         public void testKt34268() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/kt34268.kt");

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

@@ -12278,6 +12278,11 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/inlineClasses/kt28920_javaPrimitiveType.kt");
         }
 
+        @TestMetadata("kt33119.kt")
+        public void testKt33119() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/kt33119.kt");
+        }
+
         @TestMetadata("kt34268.kt")
         public void testKt34268() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/kt34268.kt");

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

@@ -12278,6 +12278,11 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/inlineClasses/kt28920_javaPrimitiveType.kt");
         }
 
+        @TestMetadata("kt33119.kt")
+        public void testKt33119() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/kt33119.kt");
+        }
+
         @TestMetadata("kt34268.kt")
         public void testKt34268() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/kt34268.kt");

core/descriptors/src/org/jetbrains/kotlin/builtins/UnsignedType.kt

@@ -43,6 +43,7 @@ object UnsignedTypes {
     fun getUnsignedClassIdByArrayClassId(arrayClassId: ClassId): ClassId? = arrayClassIdToUnsignedClassId[arrayClassId]
     fun getUnsignedArrayClassIdByUnsignedClassId(arrayClassId: ClassId): ClassId? = unsignedClassIdToArrayClassId[arrayClassId]
 
+    @JvmStatic
     fun isUnsignedType(type: KotlinType): Boolean {
         if (TypeUtils.noExpectedType(type)) return false
 

js/js.tests/test/org/jetbrains/kotlin/js/test/ir/semantics/IrJsCodegenBoxTestGenerated.java

@@ -10558,6 +10558,11 @@ public class IrJsCodegenBoxTestGenerated extends AbstractIrJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/inlineClasses/kt28585.kt");
         }
 
+        @TestMetadata("kt33119.kt")
+        public void testKt33119() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/kt33119.kt");
+        }
+
         @TestMetadata("kt34268.kt")
         public void testKt34268() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/kt34268.kt");

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/JsCodegenBoxTestGenerated.java

@@ -10623,6 +10623,11 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/inlineClasses/kt28585.kt");
         }
 
+        @TestMetadata("kt33119.kt")
+        public void testKt33119() throws Exception {
+            runTest("compiler/testData/codegen/box/inlineClasses/kt33119.kt");
+        }
+
         @TestMetadata("kt34268.kt")
         public void testKt34268() throws Exception {
             runTest("compiler/testData/codegen/box/inlineClasses/kt34268.kt");