IR: do not inherit IrFunctionReference from IrFunctionAccessExpression

To avoid the diamond hierarchy and to allow refactoring the IR element
hierarchy from interfaces to classes, improving performance of visitors
and transformers.

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/ir/IrUtils.kt

@@ -14,7 +14,6 @@ import org.jetbrains.kotlin.backend.jvm.codegen.isInlineOnly
 import org.jetbrains.kotlin.backend.jvm.codegen.isJvmInterface
 import org.jetbrains.kotlin.backend.jvm.descriptors.JvmDeclarationFactory
 import org.jetbrains.kotlin.backend.jvm.lower.inlineclasses.unboxInlineClass
-import org.jetbrains.kotlin.builtins.KotlinBuiltIns
 import org.jetbrains.kotlin.codegen.inline.coroutines.FOR_INLINE_SUFFIX
 import org.jetbrains.kotlin.config.JvmDefaultMode
 import org.jetbrains.kotlin.descriptors.ClassKind
@@ -281,14 +280,10 @@ fun createDelegatingCallWithPlaceholderTypeArguments(existingCall: IrCall, redir
         copyFromWithPlaceholderTypeArguments(existingCall, irBuiltIns)
     }
 
-fun IrFunctionAccessExpression.copyFromWithPlaceholderTypeArguments(existingCall: IrFunctionAccessExpression, irBuiltIns: IrBuiltIns) {
-    copyValueArgumentsFrom(
-        existingCall,
-        existingCall.symbol.owner,
-        this.symbol.owner,
-        receiversAsArguments = true,
-        argumentsAsReceivers = false,
-    )
+fun IrMemberAccessExpression<IrFunctionSymbol>.copyFromWithPlaceholderTypeArguments(
+    existingCall: IrMemberAccessExpression<IrFunctionSymbol>, irBuiltIns: IrBuiltIns
+) {
+    copyValueArgumentsFrom(existingCall, this.symbol.owner, receiversAsArguments = true, argumentsAsReceivers = false)
     var offset = 0
     existingCall.symbol.owner.parentAsClass.typeParameters.forEach { _ ->
         putTypeArgument(offset++, createPlaceholderAnyNType(irBuiltIns))

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/lower/AddContinuationLowering.kt

@@ -12,7 +12,10 @@ import org.jetbrains.kotlin.backend.common.lower.createIrBuilder
 import org.jetbrains.kotlin.backend.common.phaser.makeIrFilePhase
 import org.jetbrains.kotlin.backend.jvm.JvmBackendContext
 import org.jetbrains.kotlin.backend.jvm.JvmLoweredDeclarationOrigin
-import org.jetbrains.kotlin.backend.jvm.codegen.*
+import org.jetbrains.kotlin.backend.jvm.codegen.continuationParameter
+import org.jetbrains.kotlin.backend.jvm.codegen.hasContinuation
+import org.jetbrains.kotlin.backend.jvm.codegen.isInvokeSuspendOfContinuation
+import org.jetbrains.kotlin.backend.jvm.codegen.isReadOfCrossinline
 import org.jetbrains.kotlin.backend.jvm.ir.IrInlineReferenceLocator
 import org.jetbrains.kotlin.backend.jvm.ir.defaultValue
 import org.jetbrains.kotlin.backend.jvm.ir.isStaticInlineClassReplacement
@@ -29,6 +32,7 @@ import org.jetbrains.kotlin.ir.builders.declarations.*
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.expressions.*
 import org.jetbrains.kotlin.ir.expressions.impl.*
+import org.jetbrains.kotlin.ir.symbols.IrFunctionSymbol
 import org.jetbrains.kotlin.ir.symbols.IrSimpleFunctionSymbol
 import org.jetbrains.kotlin.ir.types.*
 import org.jetbrains.kotlin.ir.types.impl.IrSimpleTypeImpl
@@ -692,7 +696,7 @@ private fun IrFunction.continuationType(context: JvmBackendContext): IrType {
         context.ir.symbols.continuationClass.typeWith(returnType)
 }
 
-private fun <T : IrFunctionAccessExpression> T.retargetToSuspendView(
+private fun <T : IrMemberAccessExpression<IrFunctionSymbol>> T.retargetToSuspendView(
     context: JvmBackendContext,
     caller: IrFunction?,
     copyWithTargetSymbol: T.(IrSimpleFunctionSymbol) -> T

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

@@ -23,7 +23,7 @@ interface IrCallableReference<S : IrSymbol> : IrMemberAccessExpression<S> {
     val referencedName: Name
 }
 
-interface IrFunctionReference : IrCallableReference<IrFunctionSymbol>, IrFunctionAccessExpression {
+interface IrFunctionReference : IrCallableReference<IrFunctionSymbol> {
     val reflectionTarget: IrFunctionSymbol?
 }
 

compiler/ir/ir.tree/src/org/jetbrains/kotlin/ir/util/IrUtils.kt

@@ -7,9 +7,9 @@ package org.jetbrains.kotlin.ir.util
 
 import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.descriptors.impl.DeclarationDescriptorVisitorEmptyBodies
-import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.IrStatement
+import org.jetbrains.kotlin.ir.ObsoleteDescriptorBasedAPI
 import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.declarations.impl.IrValueParameterImpl
 import org.jetbrains.kotlin.ir.descriptors.IrBuiltIns
@@ -499,18 +499,17 @@ fun irCall(
         }
     }
 
-fun IrFunctionAccessExpression.copyTypeAndValueArgumentsFrom(
-    src: IrFunctionAccessExpression,
+fun IrMemberAccessExpression<IrFunctionSymbol>.copyTypeAndValueArgumentsFrom(
+    src: IrMemberAccessExpression<IrFunctionSymbol>,
     receiversAsArguments: Boolean = false,
     argumentsAsReceivers: Boolean = false
 ) {
     copyTypeArgumentsFrom(src)
-    copyValueArgumentsFrom(src, src.symbol.owner, symbol.owner, receiversAsArguments, argumentsAsReceivers)
+    copyValueArgumentsFrom(src, symbol.owner, receiversAsArguments, argumentsAsReceivers)
 }
 
-fun IrMemberAccessExpression<*>.copyValueArgumentsFrom(
-    src: IrMemberAccessExpression<*>,
-    srcFunction: IrFunction,
+fun IrMemberAccessExpression<IrFunctionSymbol>.copyValueArgumentsFrom(
+    src: IrMemberAccessExpression<IrFunctionSymbol>,
     destFunction: IrFunction,
     receiversAsArguments: Boolean = false,
     argumentsAsReceivers: Boolean = false
@@ -518,6 +517,8 @@ fun IrMemberAccessExpression<*>.copyValueArgumentsFrom(
     var destValueArgumentIndex = 0
     var srcValueArgumentIndex = 0
 
+    val srcFunction = src.symbol.owner
+
     when {
         receiversAsArguments && srcFunction.dispatchReceiverParameter != null -> {
             putValueArgument(destValueArgumentIndex++, src.dispatchReceiver)