[FIR] Copy also synthetic setter during fake override generation

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/scopes/impl/FirClassSubstitutionScope.kt

@@ -8,7 +8,6 @@ package org.jetbrains.kotlin.fir.scopes.impl
 import org.jetbrains.kotlin.descriptors.Visibilities
 import org.jetbrains.kotlin.fir.*
 import org.jetbrains.kotlin.fir.declarations.*
-import org.jetbrains.kotlin.fir.declarations.builder.*
 import org.jetbrains.kotlin.fir.declarations.synthetic.FirSyntheticProperty
 import org.jetbrains.kotlin.fir.resolve.substitution.ConeSubstitutor
 import org.jetbrains.kotlin.fir.resolve.substitution.chain
@@ -241,21 +240,28 @@ class FirClassSubstitutionScope(
         val fakeOverrideSubstitution = runIf(returnType == null) { FakeOverrideSubstitution(substitutor, original) }
         val newReturnType = returnType?.substitute()
 
-        val newParameterTypes = member.getter.valueParameters.map {
+        val newGetterParameterTypes = member.getter.valueParameters.map {
             it.returnTypeRef.coneType.substitute()
         }
+        val newSetterParameterTypes = member.setter?.valueParameters?.map {
+            it.returnTypeRef.coneType.substitute()
+        }.orEmpty()
 
-        if (newReturnType == null && newParameterTypes.all { it == null }) {
+        if (newReturnType == null &&
+            newGetterParameterTypes.all { it == null } &&
+            newSetterParameterTypes.all { it == null }
+        ) {
             return original
         }
 
-        return FirFakeOverrideGenerator.createFakeOverrideAccessor(
+        return FirFakeOverrideGenerator.createSubstitutionOverrideAccessor(
             session,
             member,
             original,
             dispatchReceiverTypeForSubstitutedMembers,
             newReturnType,
-            newParameterTypes,
+            newGetterParameterTypes,
+            newSetterParameterTypes,
             fakeOverrideSubstitution
         )
     }

compiler/fir/resolve/src/org/jetbrains/kotlin/fir/scopes/impl/FirFakeOverrideGenerator.kt

@@ -20,6 +20,7 @@ import org.jetbrains.kotlin.fir.resolve.substitution.substitutorByMap
 import org.jetbrains.kotlin.fir.scopes.FakeOverrideSubstitution
 import org.jetbrains.kotlin.fir.scopes.fakeOverrideSubstitution
 import org.jetbrains.kotlin.fir.symbols.CallableId
+import org.jetbrains.kotlin.fir.symbols.StandardClassIds
 import org.jetbrains.kotlin.fir.symbols.impl.*
 import org.jetbrains.kotlin.fir.types.*
 import org.jetbrains.kotlin.fir.types.builder.buildImplicitTypeRef
@@ -408,24 +409,38 @@ object FirFakeOverrideGenerator {
         return symbol
     }
 
-    fun createFakeOverrideAccessor(
+    fun createSubstitutionOverrideAccessor(
         session: FirSession,
         baseProperty: FirSyntheticProperty,
         baseSymbol: FirAccessorSymbol,
         newDispatchReceiverType: ConeKotlinType?,
         newReturnType: ConeKotlinType?,
-        newParameterTypes: List<ConeKotlinType?>?,
+        newGetterParameterTypes: List<ConeKotlinType?>?,
+        newSetterParameterTypes: List<ConeKotlinType?>?,
         fakeOverrideSubstitution: FakeOverrideSubstitution?
     ): FirAccessorSymbol {
-        val functionSymbol = FirNamedFunctionSymbol(baseSymbol.accessorId)
-        val function = createSubstitutionOverrideFunction(
-            functionSymbol,
+        val getterSymbol = FirNamedFunctionSymbol(baseSymbol.accessorId)
+        val getter = createSubstitutionOverrideFunction(
+            getterSymbol,
             session,
             baseProperty.getter.delegate,
             newDispatchReceiverType,
             newReceiverType = null,
             newReturnType,
-            newParameterTypes,
+            newGetterParameterTypes,
+            newTypeParameters = null,
+            fakeOverrideSubstitution = fakeOverrideSubstitution
+        )
+        val setterSymbol = FirNamedFunctionSymbol(baseSymbol.accessorId)
+        val baseSetter = baseProperty.setter
+        val setter = if (baseSetter == null) null else createSubstitutionOverrideFunction(
+            setterSymbol,
+            session,
+            baseSetter.delegate,
+            newDispatchReceiverType,
+            newReceiverType = null,
+            StandardClassIds.Unit.constructClassLikeType(emptyArray(), isNullable = false),
+            newSetterParameterTypes,
             newTypeParameters = null,
             fakeOverrideSubstitution = fakeOverrideSubstitution
         )
@@ -433,7 +448,8 @@ object FirFakeOverrideGenerator {
             this.session = session
             name = baseProperty.name
             symbol = FirAccessorSymbol(baseSymbol.callableId, baseSymbol.accessorId)
-            delegateGetter = function
+            delegateGetter = getter
+            delegateSetter = setter
         }.symbol
     }
 

compiler/testData/codegen/box/reflection/properties/overrideKotlinPropertyByJavaMethod.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND_FIR: JVM_IR
 // TARGET_BACKEND: JVM
 
 // WITH_REFLECT