[K/N] Remove some descriptor usages from lowerings

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/common/AbstractValueUsageTransformer.kt

@@ -6,7 +6,6 @@
 package org.jetbrains.kotlin.backend.common
 
 import org.jetbrains.kotlin.backend.konan.ir.KonanSymbols
-import org.jetbrains.kotlin.builtins.KotlinBuiltIns
 import org.jetbrains.kotlin.ir.IrBuiltIns
 import org.jetbrains.kotlin.ir.IrStatement
 import org.jetbrains.kotlin.ir.declarations.*
@@ -37,7 +36,6 @@ import java.lang.IllegalStateException
  * TODO: consider making this visitor non-recursive to make it more general.
  */
 internal abstract class AbstractValueUsageTransformer(
-        val builtIns: KotlinBuiltIns,
         val symbols: KonanSymbols,
         val irBuiltIns: IrBuiltIns
 ): IrElementTransformerVoid() {

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/Autoboxing.kt

@@ -49,7 +49,6 @@ internal class Autoboxing(val context: Context) : FileLoweringPass {
 }
 
 private class AutoboxingTransformer(val context: Context) : AbstractValueUsageTransformer(
-        context.builtIns,
         context.ir.symbols,
         context.irBuiltIns
 ) {

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/BridgesBuilding.kt

@@ -112,7 +112,7 @@ internal class WorkersBridgesBuilding(val context: Context) : DeclarationContain
                         overriddenFunction = overriddenJobDescriptor,
                         targetSymbol = jobFunction.symbol)
                 bridges += bridge
-                expression.putValueArgument(3, IrFunctionReferenceImpl.fromSymbolDescriptor(
+                expression.putValueArgument(3, IrFunctionReferenceImpl.fromSymbolOwner(
                         startOffset   = job.startOffset,
                         endOffset     = job.endOffset,
                         type          = job.type,
@@ -183,7 +183,7 @@ internal class BridgesBuilding(val context: Context) : ClassLoweringPass {
 
 internal class DECLARATION_ORIGIN_BRIDGE_METHOD(val bridgeTarget: IrFunction) : IrDeclarationOrigin {
     override fun toString(): String {
-        return "BRIDGE_METHOD(target=${bridgeTarget.descriptor})"
+        return "BRIDGE_METHOD(target=${bridgeTarget.symbol})"
     }
 }
 
@@ -241,7 +241,7 @@ private fun Context.buildBridge(startOffset: Int, endOffset: Int,
         val typeSafeBarrierDescription = BuiltinMethodsWithSpecialGenericSignature.getDefaultValueForOverriddenBuiltinFunction(overriddenFunction.overriddenFunction.descriptor)
         typeSafeBarrierDescription?.let { buildTypeSafeBarrier(bridge, overriddenFunction.function, it) }
 
-        val delegatingCall = IrCallImpl.fromSymbolDescriptor(
+        val delegatingCall = IrCallImpl.fromSymbolOwner(
                 startOffset,
                 endOffset,
                 targetSymbol.owner.returnType,

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/BuiltinOperatorLowering.kt

@@ -56,7 +56,7 @@ internal class BuiltinOperatorLowering(val context: Context) : FileLoweringPass,
 
             irBuiltins.checkNotNullSymbol -> lowerCheckNotNull(expression)
 
-            irBuiltins.noWhenBranchMatchedExceptionSymbol -> IrCallImpl.fromSymbolDescriptor(
+            irBuiltins.noWhenBranchMatchedExceptionSymbol -> IrCallImpl.fromSymbolOwner(
                     expression.startOffset, expression.endOffset,
                     context.ir.symbols.throwNoWhenBranchMatchedException.owner.returnType,
                     context.ir.symbols.throwNoWhenBranchMatchedException,

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/EnumConstructorsLowering.kt

@@ -171,7 +171,7 @@ internal class EnumConstructorsLowering(val context: Context) : ClassLoweringPas
                 val endOffset = enumConstructorCall.endOffset
                 val origin = enumConstructorCall.origin
 
-                val result = IrDelegatingConstructorCallImpl.fromSymbolDescriptor(
+                val result = IrDelegatingConstructorCallImpl.fromSymbolOwner(
                         startOffset, endOffset,
                         context.irBuiltIns.unitType,
                         enumConstructorCall.symbol
@@ -206,7 +206,7 @@ internal class EnumConstructorsLowering(val context: Context) : ClassLoweringPas
                     throw AssertionError("Constructor called in enum entry initializer should've been lowered: $delegatingConstructor")
                 }
 
-                val result = IrDelegatingConstructorCallImpl.fromSymbolDescriptor(
+                val result = IrDelegatingConstructorCallImpl.fromSymbolOwner(
                         startOffset, endOffset,
                         context.irBuiltIns.unitType,
                         loweredDelegatingConstructor.symbol

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/FunctionReferenceLowering.kt

@@ -326,12 +326,13 @@ internal class FunctionReferenceLowering(val context: Context): FileLoweringPass
                 addOverride("computeFqName") { irString(functionReferenceTarget.computeFullName()) }
 
 
-                val receiver = boundFunctionParameters.singleOrNull()
-                if (receiver?.descriptor is ReceiverParameterDescriptor) {
-                    addOverrideInner("computeReceiver") { f ->
-                        irGetField(irGet(f.dispatchReceiverParameter!!), argumentToPropertiesMap[receiver]!!)
-                    }
-                }
+                functionReference.symbol.owner.dispatchReceiverParameter
+                        ?.takeIf { it in boundFunctionParameters }
+                        ?.let { receiver ->
+                            addOverrideInner("computeReceiver") { f ->
+                                irGetField(irGet(f.dispatchReceiverParameter!!), argumentToPropertiesMap[receiver]!!)
+                            }
+                        }
             }
 
             functionReferenceClass.addFakeOverrides(context.typeSystem)
@@ -379,7 +380,7 @@ internal class FunctionReferenceLowering(val context: Context): FileLoweringPass
         fun build(): BuiltFunctionReference {
             val clazz = buildClass()
             val constructor = buildConstructor()
-            val arguments = functionReference.getArguments()
+            val arguments = functionReference.getArgumentsWithIr()
             val expression = if (arguments.isEmpty()) {
                 irBuilder.irConstantObject(clazz, emptyMap())
             } else {

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/RedundantCoercionsCleaner.kt

@@ -19,7 +19,7 @@ import org.jetbrains.kotlin.ir.expressions.impl.*
 import org.jetbrains.kotlin.ir.symbols.impl.IrReturnableBlockSymbolImpl
 import org.jetbrains.kotlin.ir.types.classifierOrFail
 import org.jetbrains.kotlin.ir.util.dump
-import org.jetbrains.kotlin.ir.util.getArguments
+import org.jetbrains.kotlin.ir.util.getArgumentsWithIr
 import org.jetbrains.kotlin.ir.visitors.IrElementTransformerVoid
 import org.jetbrains.kotlin.ir.visitors.IrElementVisitorVoid
 import org.jetbrains.kotlin.ir.visitors.acceptChildrenVoid
@@ -82,7 +82,7 @@ internal class RedundantCoercionsCleaner(val context: Context) : FileLoweringPas
         if (!expression.isBoxOrUnboxCall())
             return super.visitCall(expression)
 
-        val argument = expression.getArguments().single().second
+        val argument = expression.getArgumentsWithIr().single().second
         val foldedArgument = fold(
                 expression           = argument,
                 coercion             = expression,
@@ -133,7 +133,7 @@ internal class RedundantCoercionsCleaner(val context: Context) : FileLoweringPas
             if (it.isBoxOrUnboxCall()) {
                 val result =
                         if (coercionDeclaringClass == (it as IrCall).symbol.owner.getCoercedClass())
-                            it.getArguments().single().second
+                            it.getArgumentsWithIr().single().second
                         else expression
 
                 return PossiblyFoldedExpression(result.transformIfAsked(), result != expression)

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/ReflectionSupport.kt

@@ -5,13 +5,12 @@
 
 package org.jetbrains.kotlin.backend.konan.lower
 
-import org.jetbrains.kotlin.backend.konan.InteropFqNames
 import org.jetbrains.kotlin.backend.konan.KonanBackendContext
+import org.jetbrains.kotlin.backend.konan.ir.getSuperClassNotAny
 import org.jetbrains.kotlin.backend.konan.ir.typeWithStarProjections
 import org.jetbrains.kotlin.backend.konan.isObjCClass
 import org.jetbrains.kotlin.backend.konan.llvm.computeFullName
 import org.jetbrains.kotlin.backend.konan.reportCompilationError
-import org.jetbrains.kotlin.descriptors.ClassDescriptor
 import org.jetbrains.kotlin.ir.IrElement
 import org.jetbrains.kotlin.ir.builders.*
 import org.jetbrains.kotlin.ir.declarations.*
@@ -20,8 +19,6 @@ import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
 import org.jetbrains.kotlin.ir.symbols.IrTypeParameterSymbol
 import org.jetbrains.kotlin.ir.types.*
 import org.jetbrains.kotlin.ir.util.*
-import org.jetbrains.kotlin.resolve.descriptorUtil.fqNameUnsafe
-import org.jetbrains.kotlin.resolve.descriptorUtil.getAllSuperClassifiers
 import org.jetbrains.kotlin.types.Variance
 
 private fun IrBuilderWithScope.irConstantString(string: String) = irConstantPrimitive(irString(string))
@@ -181,13 +178,16 @@ internal class KTypeGenerator(
 
 internal fun IrBuilderWithScope.irKClass(context: KonanBackendContext, symbol: IrClassSymbol): IrConstantValue {
     val symbols = context.ir.symbols
+
+    fun IrClass.isNativePointedChild() : Boolean =
+            this.symbol == context.ir.symbols.nativePointed || getSuperClassNotAny()?.isNativePointedChild() == true
+
     return when {
-        symbol.descriptor.isObjCClass() ->
+        symbol.owner.isObjCClass() ->
             irKClassUnsupported(context, "KClass for Objective-C classes is not supported yet")
 
-        symbol.descriptor.getAllSuperClassifiers().any {
-            it is ClassDescriptor && it.fqNameUnsafe == InteropFqNames.nativePointed
-        } -> irKClassUnsupported(context, "KClass for interop types is not supported yet")
+        symbol.owner.isNativePointedChild() ->
+            irKClassUnsupported(context, "KClass for interop types is not supported yet")
 
         else -> irConstantObject(symbols.kClassImplIntrinsicConstructor, emptyList(), listOf(symbol.typeWithStarProjections))
     }

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/TestProcessor.kt

@@ -191,7 +191,7 @@ internal class TestProcessor (val context: Context) {
             element.acceptChildrenVoid(this)
         }
 
-        fun IrFunctionSymbol.hasAnnotation(fqName: FqName) = descriptor.annotations.any { it.fqName == fqName }
+        fun IrFunctionSymbol.hasAnnotation(fqName: FqName) = owner.hasAnnotation(fqName)
 
         /**
          * Checks if [this] or any of its parent functions has the annotation with the given [testAnnotation].

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/lower/VarargLowering.kt

@@ -177,7 +177,7 @@ internal class VarargInjectionLowering constructor(val context: KonanBackendCont
 
     private fun arrayType(type: IrType): ArrayHandle {
         val arrayClass = type.classifierOrFail
-        return arrayToHandle[arrayClass] ?: error(arrayClass.descriptor)
+        return arrayToHandle[arrayClass] ?: error(arrayClass)
     }
 
     private fun IrBuilderWithScope.intPlus() = irCall(intPlusInt)
@@ -194,6 +194,7 @@ internal class VarargInjectionLowering constructor(val context: KonanBackendCont
             putValueArgument(0, value)
         })
     }
+
     private fun calculateArraySize(arrayHandle: ArrayHandle, hasSpreadElement: Boolean, scope:Scope, expression: IrVararg, vars: Map<IrVarargElement, IrVariable>): IrExpression {
         context.createIrBuilder(scope.scopeOwnerSymbol, expression.startOffset, expression.endOffset).run {
             if (!hasSpreadElement)