Cleanup compiler warnings in IR-related modules

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/descriptors/WrappedDescriptors.kt

@@ -9,7 +9,6 @@ import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptor
 import org.jetbrains.kotlin.descriptors.annotations.AnnotationDescriptorImpl
 import org.jetbrains.kotlin.descriptors.annotations.Annotations
-import org.jetbrains.kotlin.descriptors.impl.ReceiverParameterDescriptorImpl
 import org.jetbrains.kotlin.descriptors.impl.TypeAliasConstructorDescriptor
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.declarations.*
@@ -25,7 +24,6 @@ import org.jetbrains.kotlin.resolve.descriptorUtil.module
 import org.jetbrains.kotlin.resolve.scopes.LazyScopeAdapter
 import org.jetbrains.kotlin.resolve.scopes.MemberScope
 import org.jetbrains.kotlin.resolve.scopes.TypeIntersectionScope
-import org.jetbrains.kotlin.resolve.scopes.receivers.ExtensionReceiver
 import org.jetbrains.kotlin.resolve.scopes.receivers.ReceiverValue
 import org.jetbrains.kotlin.serialization.deserialization.descriptors.DescriptorWithContainerSource
 import org.jetbrains.kotlin.serialization.deserialization.descriptors.DeserializedContainerSource
@@ -1023,10 +1021,10 @@ open class WrappedFieldDescriptor(
 
     override fun getContainingDeclaration() = (owner.parent as IrSymbolOwner).symbol.descriptor
 
-    override fun isLateInit() = owner.correspondingProperty?.isLateinit ?: false
+    override fun isLateInit() = owner.correspondingPropertySymbol?.owner?.isLateinit ?: false
 
     override fun getExtensionReceiverParameter(): ReceiverParameterDescriptor? =
-        owner.correspondingProperty?.descriptor?.extensionReceiverParameter
+        owner.correspondingPropertySymbol?.owner?.descriptor?.extensionReceiverParameter
 
     override fun isExternal() = owner.isExternal
 

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/AbstractSuspendFunctionsLowering.kt

@@ -594,7 +594,6 @@ abstract class AbstractSuspendFunctionsLowering<C : CommonBackendContext>(val co
             stateMachineFunction: IrSimpleFunction,
             coroutineClass: IrClass
         ): IrSimpleFunction {
-            val originalBody = irFunction.body!!
             val function = WrappedSimpleFunctionDescriptor().let { d ->
                 IrFunctionImpl(
                     startOffset, endOffset,

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/DefaultArgumentStubGenerator.kt

@@ -359,7 +359,6 @@ open class DefaultParameterInjector(
             )
         }
         if (expression.symbol is IrConstructorSymbol) {
-            val defaultArgumentMarker = context.ir.symbols.defaultConstructorMarker
             params += markerParameterDeclaration(realFunction) to
                     IrConstImpl.constNull(startOffset, endOffset, context.irBuiltIns.nothingNType)
         } else if (context.ir.shouldGenerateHandlerParameterForDefaultBodyFun()) {

compiler/ir/backend.common/src/org/jetbrains/kotlin/backend/common/lower/KCallableNamePropertyLowering.kt

@@ -52,7 +52,7 @@ private class KCallableNamePropertyTransformer(val lower: KCallableNamePropertyL
 
         //TODO rewrite checking
         val directMember = expression.symbol.owner.let {
-            (it as? IrSimpleFunction)?.correspondingProperty ?: it
+            (it as? IrSimpleFunction)?.correspondingPropertySymbol?.owner ?: it
         }
         val irClass = directMember.parent as? IrClass ?: return expression
         if (!irClass.isSubclassOf(lower.context.irBuiltIns.kCallableClass.owner)) return expression