[IR] Make IrGetObjectValue copyable to avoid duplicate IR nodes.

Fixes KT-45170

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

@@ -25170,6 +25170,12 @@ public class FirBlackBoxCodegenTestGenerated extends AbstractFirBlackBoxCodegenT
             runTest("compiler/testData/codegen/box/objects/kt42758.kt");
         }
 
+        @Test
+        @TestMetadata("kt45170.kt")
+        public void testKt45170() throws Exception {
+            runTest("compiler/testData/codegen/box/objects/kt45170.kt");
+        }
+
         @Test
         @TestMetadata("kt535.kt")
         public void testKt535() throws Exception {

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/IrDeclarationReference.kt

@@ -27,7 +27,7 @@ abstract class IrDeclarationReference : IrExpression() {
 
 abstract class IrGetSingletonValue : IrDeclarationReference()
 
-abstract class IrGetObjectValue : IrGetSingletonValue() {
+abstract class IrGetObjectValue : IrGetSingletonValue(), IrExpressionWithCopy {
     abstract override val symbol: IrClassSymbol
 }
 

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/expressions/impl/IrGetObjectValueImpl.kt

@@ -16,6 +16,7 @@
 
 package org.jetbrains.kotlin.ir.expressions.impl
 
+import org.jetbrains.kotlin.ir.expressions.IrExpression
 import org.jetbrains.kotlin.ir.expressions.IrGetObjectValue
 import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
 import org.jetbrains.kotlin.ir.types.IrType
@@ -29,4 +30,8 @@ class IrGetObjectValueImpl(
 ) : IrGetObjectValue() {
     override fun <R, D> accept(visitor: IrElementVisitor<R, D>, data: D): R =
         visitor.visitGetObjectValue(this, data)
+
+    override fun copy(): IrExpression {
+        return IrGetObjectValueImpl(startOffset, endOffset, type, symbol)
+    }
 }

compiler/testData/codegen/box/objects/kt45170.kt

@@ -0,0 +1,10 @@
+object A {
+    var id = 0
+        get() = field.also { field++ }
+}
+
+fun box(): String {
+    if (A.id != 0) return "FAIL1"
+    if (A.id != 1) return "FAIL2"
+    return "OK"
+}

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

@@ -25170,6 +25170,12 @@ public class BlackBoxCodegenTestGenerated extends AbstractBlackBoxCodegenTest {
             runTest("compiler/testData/codegen/box/objects/kt42758.kt");
         }
 
+        @Test
+        @TestMetadata("kt45170.kt")
+        public void testKt45170() throws Exception {
+            runTest("compiler/testData/codegen/box/objects/kt45170.kt");
+        }
+
         @Test
         @TestMetadata("kt535.kt")
         public void testKt535() throws Exception {

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

@@ -25170,6 +25170,12 @@ public class IrBlackBoxCodegenTestGenerated extends AbstractIrBlackBoxCodegenTes
             runTest("compiler/testData/codegen/box/objects/kt42758.kt");
         }
 
+        @Test
+        @TestMetadata("kt45170.kt")
+        public void testKt45170() throws Exception {
+            runTest("compiler/testData/codegen/box/objects/kt45170.kt");
+        }
+
         @Test
         @TestMetadata("kt535.kt")
         public void testKt535() throws Exception {

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

@@ -21371,6 +21371,11 @@ public class LightAnalysisModeTestGenerated extends AbstractLightAnalysisModeTes
             runTest("compiler/testData/codegen/box/objects/kt42758.kt");
         }
 
+        @TestMetadata("kt45170.kt")
+        public void testKt45170() throws Exception {
+            runTest("compiler/testData/codegen/box/objects/kt45170.kt");
+        }
+
         @TestMetadata("kt535.kt")
         public void testKt535() throws Exception {
             runTest("compiler/testData/codegen/box/objects/kt535.kt");

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/es6/semantics/IrJsCodegenBoxES6TestGenerated.java

@@ -16844,6 +16844,11 @@ public class IrJsCodegenBoxES6TestGenerated extends AbstractIrJsCodegenBoxES6Tes
             runTest("compiler/testData/codegen/box/objects/kt4086.kt");
         }
 
+        @TestMetadata("kt45170.kt")
+        public void testKt45170() throws Exception {
+            runTest("compiler/testData/codegen/box/objects/kt45170.kt");
+        }
+
         @TestMetadata("kt535.kt")
         public void testKt535() throws Exception {
             runTest("compiler/testData/codegen/box/objects/kt535.kt");

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

@@ -16301,6 +16301,11 @@ public class IrJsCodegenBoxTestGenerated extends AbstractIrJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/objects/kt4086.kt");
         }
 
+        @TestMetadata("kt45170.kt")
+        public void testKt45170() throws Exception {
+            runTest("compiler/testData/codegen/box/objects/kt45170.kt");
+        }
+
         @TestMetadata("kt535.kt")
         public void testKt535() throws Exception {
             runTest("compiler/testData/codegen/box/objects/kt535.kt");

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

@@ -16366,6 +16366,11 @@ public class JsCodegenBoxTestGenerated extends AbstractJsCodegenBoxTest {
             runTest("compiler/testData/codegen/box/objects/kt4086.kt");
         }
 
+        @TestMetadata("kt45170.kt")
+        public void testKt45170() throws Exception {
+            runTest("compiler/testData/codegen/box/objects/kt45170.kt");
+        }
+
         @TestMetadata("kt535.kt")
         public void testKt535() throws Exception {
             runTest("compiler/testData/codegen/box/objects/kt535.kt");

js/js.tests/tests-gen/org/jetbrains/kotlin/js/test/wasm/semantics/IrCodegenBoxWasmTestGenerated.java

@@ -10157,6 +10157,11 @@ public class IrCodegenBoxWasmTestGenerated extends AbstractIrCodegenBoxWasmTest
             runTest("compiler/testData/codegen/box/objects/kt4086.kt");
         }
 
+        @TestMetadata("kt45170.kt")
+        public void testKt45170() throws Exception {
+            runTest("compiler/testData/codegen/box/objects/kt45170.kt");
+        }
+
         @TestMetadata("kt694.kt")
         public void testKt694() throws Exception {
             runTest("compiler/testData/codegen/box/objects/kt694.kt");