[Wasm] Copy property reference lowering from K/N

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

@@ -7,6 +7,7 @@ package org.jetbrains.kotlin.backend.common.ir
 
 import org.jetbrains.kotlin.backend.common.CommonBackendContext
 import org.jetbrains.kotlin.backend.common.deepCopyWithVariables
+import org.jetbrains.kotlin.backend.common.lower.createIrBuilder
 import org.jetbrains.kotlin.descriptors.ClassKind
 import org.jetbrains.kotlin.descriptors.DescriptorVisibilities
 import org.jetbrains.kotlin.descriptors.DescriptorVisibility
@@ -699,3 +700,28 @@ fun IrExpression?.isPure(
 
     return false
 }
+
+fun CommonBackendContext.createArrayOfExpression(
+    startOffset: Int, endOffset: Int,
+    arrayElementType: IrType,
+    arrayElements: List<IrExpression>
+): IrExpression {
+
+    val arrayType = ir.symbols.array.typeWith(arrayElementType)
+    val arg0 = IrVarargImpl(startOffset, endOffset, arrayType, arrayElementType, arrayElements)
+
+    return IrCallImpl(
+        startOffset,
+        endOffset,
+        arrayType,
+        ir.symbols.arrayOf,
+        1,
+        1
+    ).apply {
+        putTypeArgument(0, arrayElementType)
+        putValueArgument(0, arg0)
+    }
+}
+
+fun IrBuiltIns.getKFunctionType(returnType: IrType, parameterTypes: List<IrType>) =
+    kFunctionN(parameterTypes.size).typeWith(parameterTypes + returnType)

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/WasmLoweringPhases.kt

@@ -179,6 +179,12 @@ private val sharedVariablesLoweringPhase = makeWasmModulePhase(
     description = "Box captured mutable variables"
 )
 
+private val propertyReferenceLowering = makeWasmModulePhase(
+    ::WasmPropertyReferenceLowering,
+    name = "WasmPropertyReferenceLowering",
+    description = "Lower property references"
+)
+
 private val callableReferencePhase = makeWasmModulePhase(
     ::WasmCallableReferenceLowering,
     name = "WasmCallableReferenceLowering",
@@ -454,6 +460,7 @@ val wasmPhases = NamedCompilerPhase(
             enumClassConstructorBodyLoweringPhase then
 
             sharedVariablesLoweringPhase then
+            propertyReferenceLowering then
             callableReferencePhase then
             localDelegatedPropertiesLoweringPhase then
             localDeclarationsLoweringPhase then

compiler/ir/backend.wasm/src/org/jetbrains/kotlin/backend/wasm/WasmSymbols.kt

@@ -18,6 +18,8 @@ import org.jetbrains.kotlin.ir.symbols.IrClassSymbol
 import org.jetbrains.kotlin.ir.symbols.IrClassifierSymbol
 import org.jetbrains.kotlin.ir.symbols.IrSimpleFunctionSymbol
 import org.jetbrains.kotlin.ir.types.defaultType
+import org.jetbrains.kotlin.ir.types.IrType
+import org.jetbrains.kotlin.ir.types.typeWith
 import org.jetbrains.kotlin.ir.util.SymbolTable
 import org.jetbrains.kotlin.name.FqName
 import org.jetbrains.kotlin.name.Name
@@ -146,6 +148,21 @@ class WasmSymbols(
     val exportString = getInternalFunction("exportString")
     val unsafeGetScratchRawMemory = getInternalFunction("unsafeGetScratchRawMemory")
 
+    // KProperty implementations
+    val kLocalDelegatedPropertyImpl: IrClassSymbol = this.getInternalClass("KLocalDelegatedPropertyImpl")
+    val kLocalDelegatedMutablePropertyImpl: IrClassSymbol = this.getInternalClass("KLocalDelegatedMutablePropertyImpl")
+    val kProperty0Impl: IrClassSymbol = this.getInternalClass("KProperty0Impl")
+    val kProperty1Impl: IrClassSymbol = this.getInternalClass("KProperty1Impl")
+    val kProperty2Impl: IrClassSymbol = this.getInternalClass("KProperty2Impl")
+    val kMutableProperty0Impl: IrClassSymbol = this.getInternalClass("KMutableProperty0Impl")
+    val kMutableProperty1Impl: IrClassSymbol = this.getInternalClass("KMutableProperty1Impl")
+    val kMutableProperty2Impl: IrClassSymbol = this.getInternalClass("KMutableProperty2Impl")
+    val kMutableProperty0: IrClassSymbol = getIrClass(FqName("kotlin.reflect.KMutableProperty0"))
+    val kMutableProperty1: IrClassSymbol = getIrClass(FqName("kotlin.reflect.KMutableProperty1"))
+    val kMutableProperty2: IrClassSymbol = getIrClass(FqName("kotlin.reflect.KMutableProperty2"))
+
+    val kTypeStub = getInternalFunction("kTypeStub")
+
     private val functionNInterfaces = (0..22).map { arity ->
         getIrClass(FqName("kotlin.wasm.internal.Function$arity"))
     }
@@ -187,4 +204,8 @@ class WasmSymbols(
     private fun getInternalFunction(name: String) = getFunction(name, wasmInternalPackage)
 
     private fun getIrClass(fqName: FqName): IrClassSymbol = symbolTable.referenceClass(getClass(fqName))
+    private fun getInternalClass(name: String): IrClassSymbol = getIrClass(FqName("kotlin.wasm.internal.$name"))
+    fun getKFunctionType(type: IrType, list: List<IrType>): IrType {
+        return irBuiltIns.functionN(list.size).typeWith(list + type)
+    }
 }