| // Copyright (c) 2022, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| import 'package:kernel/ast.dart'; |
| import 'package:wasm_builder/wasm_builder.dart' as w; |
| |
| import 'abi.dart' show kWasmAbiEnumIndex; |
| import 'class_info.dart'; |
| import 'code_generator.dart'; |
| import 'dynamic_forwarders.dart'; |
| import 'translator.dart'; |
| import 'types.dart'; |
| |
| typedef CodeGenCallback = void Function(CodeGenerator); |
| |
| /// Specialized code generation for external members. |
| /// |
| /// The code is generated either inlined at the call site, or as the body of |
| /// the member in [generateMemberIntrinsic]. |
| class Intrinsifier { |
| final CodeGenerator codeGen; |
| |
| static const w.ValueType boolType = w.NumType.i32; |
| static const w.ValueType intType = w.NumType.i64; |
| static const w.ValueType doubleType = w.NumType.f64; |
| |
| static final Map<w.ValueType, Map<w.ValueType, Map<String, CodeGenCallback>>> |
| _binaryOperatorMap = { |
| boolType: { |
| boolType: { |
| '|': (c) => c.b.i32_or(), |
| '^': (c) => c.b.i32_xor(), |
| '&': (c) => c.b.i32_and(), |
| } |
| }, |
| intType: { |
| intType: { |
| '+': (c) => c.b.i64_add(), |
| '-': (c) => c.b.i64_sub(), |
| '*': (c) => c.b.i64_mul(), |
| '&': (c) => c.b.i64_and(), |
| '|': (c) => c.b.i64_or(), |
| '^': (c) => c.b.i64_xor(), |
| '<': (c) => c.b.i64_lt_s(), |
| '<=': (c) => c.b.i64_le_s(), |
| '>': (c) => c.b.i64_gt_s(), |
| '>=': (c) => c.b.i64_ge_s(), |
| '~/': (c) => c.call(c.translator.truncDiv.reference), |
| } |
| }, |
| doubleType: { |
| doubleType: { |
| '+': (c) => c.b.f64_add(), |
| '-': (c) => c.b.f64_sub(), |
| '*': (c) => c.b.f64_mul(), |
| '/': (c) => c.b.f64_div(), |
| '<': (c) => c.b.f64_lt(), |
| '<=': (c) => c.b.f64_le(), |
| '>': (c) => c.b.f64_gt(), |
| '>=': (c) => c.b.f64_ge(), |
| } |
| }, |
| }; |
| |
| static final Map<w.ValueType, Map<String, CodeGenCallback>> |
| _unaryOperatorMap = { |
| intType: { |
| 'unary-': (c) { |
| c.b.i64_const(-1); |
| c.b.i64_mul(); |
| }, |
| '~': (c) { |
| c.b.i64_const(-1); |
| c.b.i64_xor(); |
| }, |
| 'toDouble': (c) { |
| c.b.f64_convert_i64_s(); |
| }, |
| }, |
| doubleType: { |
| 'unary-': (c) { |
| c.b.f64_neg(); |
| }, |
| 'floorToDouble': (c) { |
| c.b.f64_floor(); |
| }, |
| 'ceilToDouble': (c) { |
| c.b.f64_ceil(); |
| }, |
| 'truncateToDouble': (c) { |
| c.b.f64_trunc(); |
| }, |
| '_toInt': (c) { |
| c.b.i64_trunc_sat_f64_s(); |
| }, |
| }, |
| }; |
| |
| static final Map<String, w.ValueType> _unaryResultMap = { |
| 'toDouble': w.NumType.f64, |
| 'floorToDouble': w.NumType.f64, |
| 'ceilToDouble': w.NumType.f64, |
| 'truncateToDouble': w.NumType.f64, |
| '_toInt': w.NumType.i64, |
| }; |
| |
| Translator get translator => codeGen.translator; |
| Types get types => codeGen.translator.types; |
| w.InstructionsBuilder get b => codeGen.b; |
| |
| DartType dartTypeOf(Expression exp) => codeGen.dartTypeOf(exp); |
| |
| w.ValueType typeOfExp(Expression exp) { |
| return translator.translateType(dartTypeOf(exp)); |
| } |
| |
| static bool isComparison(String op) => |
| op == '<' || |
| op == '<=' || |
| op == '>' || |
| op == '>=' || |
| op == '_le_u' || |
| op == '_lt_u'; |
| |
| Intrinsifier(this.codeGen); |
| |
| /// Generate inline code for an [InstanceGet] if the member is an inlined |
| /// intrinsic. |
| w.ValueType? generateInstanceGetterIntrinsic(InstanceGet node) { |
| Expression receiver = node.receiver; |
| String name = node.name.text; |
| Member target = node.interfaceTarget; |
| Class cls = target.enclosingClass!; |
| |
| // WasmAnyRef.isObject |
| if (cls == translator.wasmAnyRefClass) { |
| assert(name == "isObject"); |
| codeGen.wrap(receiver, w.RefType.any(nullable: false)); |
| b.ref_test(translator.topInfo.nonNullableType); |
| return w.NumType.i32; |
| } |
| |
| // WasmArrayRef.length |
| if (cls == translator.wasmArrayRefClass) { |
| assert(name == 'length'); |
| codeGen.wrap(receiver, w.RefType.array(nullable: false)); |
| b.array_len(); |
| b.i64_extend_i32_u(); |
| return w.NumType.i64; |
| } |
| |
| // WasmTable.size |
| if (cls == translator.wasmTableClass) { |
| if (receiver is! StaticGet || receiver.target is! Field) { |
| throw "Table size not directly on a static field" |
| " at ${node.location}"; |
| } |
| w.Table table = translator.getTable(receiver.target as Field)!; |
| assert(name == "size"); |
| b.table_size(table); |
| return w.NumType.i32; |
| } |
| |
| // int.bitlength |
| if (cls == translator.coreTypes.intClass && name == 'bitLength') { |
| w.Local temp = b.addLocal(w.NumType.i64); |
| b.i64_const(64); |
| codeGen.wrap(receiver, w.NumType.i64); |
| b.local_tee(temp); |
| b.local_get(temp); |
| b.i64_const(63); |
| b.i64_shr_s(); |
| b.i64_xor(); |
| b.i64_clz(); |
| b.i64_sub(); |
| return w.NumType.i64; |
| } |
| |
| // Pointer.address |
| if (cls == translator.ffiPointerClass && name == 'address') { |
| // A Pointer is represented by its i32 address. |
| codeGen.wrap(receiver, w.NumType.i32); |
| b.i64_extend_i32_u(); |
| return w.NumType.i64; |
| } |
| |
| return null; |
| } |
| |
| /// Generate inline code for an [InstanceInvocation] if the member is an |
| /// inlined intrinsic. |
| w.ValueType? generateInstanceIntrinsic(InstanceInvocation node) { |
| Expression receiver = node.receiver; |
| DartType receiverType = dartTypeOf(receiver); |
| String name = node.name.text; |
| Procedure target = node.interfaceTarget; |
| Class cls = target.enclosingClass!; |
| |
| // WasmAnyRef.toObject |
| if (cls == translator.wasmAnyRefClass && name == "toObject") { |
| w.Label succeed = b.block(const [], [translator.topInfo.nonNullableType]); |
| codeGen.wrap(receiver, const w.RefType.any(nullable: false)); |
| b.br_on_cast(succeed, const w.RefType.any(nullable: false), |
| translator.topInfo.nonNullableType); |
| codeGen.throwWasmRefError("a Dart object"); |
| b.end(); // succeed |
| return translator.topInfo.nonNullableType; |
| } |
| |
| // Wasm(I32|I64|F32|F64) conversions |
| if (cls.superclass == translator.wasmTypesBaseClass) { |
| w.StorageType? receiverType = translator.builtinTypes[cls]; |
| switch (receiverType) { |
| case w.NumType.i32: |
| switch (name) { |
| case "unary-": |
| b.i32_const(0); |
| codeGen.wrap(receiver, w.NumType.i32); |
| b.i32_sub(); |
| return w.NumType.i32; |
| } |
| codeGen.wrap(receiver, w.NumType.i32); |
| switch (name) { |
| case "toIntSigned": |
| b.i64_extend_i32_s(); |
| return w.NumType.i64; |
| case "toIntUnsigned": |
| b.i64_extend_i32_u(); |
| return w.NumType.i64; |
| case "toBool": |
| b.i32_const(0); |
| b.i32_ne(); |
| return w.NumType.i32; |
| } |
| codeGen.wrap(node.arguments.positional[0], w.NumType.i32); |
| switch (name) { |
| case "toIntSigned": |
| b.i64_extend_i32_s(); |
| return w.NumType.i64; |
| case "toIntUnsigned": |
| b.i64_extend_i32_u(); |
| return w.NumType.i64; |
| case "toBool": |
| b.i32_const(0); |
| b.i32_ne(); |
| return w.NumType.i32; |
| case "+": |
| b.i32_add(); |
| return w.NumType.i32; |
| case "-": |
| b.i32_sub(); |
| return w.NumType.i32; |
| case ">>": |
| b.i32_shr_s(); |
| return w.NumType.i32; |
| case "<": |
| b.i32_lt_s(); |
| return boolType; |
| case "<=": |
| b.i32_le_s(); |
| return boolType; |
| case "==": |
| b.i32_eq(); |
| return boolType; |
| case ">=": |
| b.i32_ge_s(); |
| return boolType; |
| case ">": |
| b.i32_gt_s(); |
| return boolType; |
| case "leU": |
| b.i32_le_u(); |
| return boolType; |
| case "ltU": |
| b.i32_lt_u(); |
| return boolType; |
| case "geU": |
| b.i32_ge_u(); |
| return boolType; |
| case "gtU": |
| b.i32_gt_u(); |
| return boolType; |
| default: |
| throw 'Unknown WasmI32 member $name'; |
| } |
| case w.NumType.i64: |
| switch (name) { |
| case "toInt": |
| codeGen.wrap(receiver, w.NumType.i64); |
| return w.NumType.i64; |
| case "leU": |
| codeGen.wrap(receiver, w.NumType.i64); |
| codeGen.wrap(node.arguments.positional[0], w.NumType.i64); |
| b.i64_le_u(); |
| return boolType; |
| case "ltU": |
| codeGen.wrap(receiver, w.NumType.i64); |
| codeGen.wrap(node.arguments.positional[0], w.NumType.i64); |
| b.i64_lt_u(); |
| return boolType; |
| case "geU": |
| codeGen.wrap(receiver, w.NumType.i64); |
| codeGen.wrap(node.arguments.positional[0], w.NumType.i64); |
| b.i64_ge_u(); |
| return boolType; |
| case "gtU": |
| codeGen.wrap(receiver, w.NumType.i64); |
| codeGen.wrap(node.arguments.positional[0], w.NumType.i64); |
| b.i64_gt_u(); |
| return boolType; |
| case "shl": |
| codeGen.wrap(receiver, w.NumType.i64); |
| codeGen.wrap(node.arguments.positional[0], w.NumType.i64); |
| b.i64_shl(); |
| return w.NumType.i64; |
| case "shrS": |
| codeGen.wrap(receiver, w.NumType.i64); |
| codeGen.wrap(node.arguments.positional[0], w.NumType.i64); |
| b.i64_shr_s(); |
| return w.NumType.i64; |
| case "shrU": |
| codeGen.wrap(receiver, w.NumType.i64); |
| codeGen.wrap(node.arguments.positional[0], w.NumType.i64); |
| b.i64_shr_u(); |
| return w.NumType.i64; |
| case "divS": |
| codeGen.wrap(receiver, w.NumType.i64); |
| codeGen.wrap(node.arguments.positional[0], w.NumType.i64); |
| b.i64_div_s(); |
| return w.NumType.i64; |
| default: |
| throw 'Unknown WasmI64 member $name'; |
| } |
| case w.NumType.f32: |
| assert(name == "toDouble"); |
| codeGen.wrap(receiver, w.NumType.f32); |
| b.f64_promote_f32(); |
| return w.NumType.f64; |
| case w.NumType.f64: |
| switch (name) { |
| case "toDouble": |
| codeGen.wrap(receiver, w.NumType.f64); |
| return w.NumType.f64; |
| case "truncSatS": |
| codeGen.wrap(receiver, w.NumType.f64); |
| b.i64_trunc_sat_f64_s(); |
| return w.NumType.i64; |
| case "copysign": |
| codeGen.wrap(receiver, w.NumType.f64); |
| codeGen.wrap(node.arguments.positional[0], w.NumType.f64); |
| b.f64_copysign(); |
| return w.NumType.f64; |
| default: |
| throw 'Unknown WasmF64 member $name'; |
| } |
| } |
| } |
| |
| // WasmTable.[] and WasmTable.[]= |
| if (cls == translator.wasmTableClass) { |
| if (receiver is! StaticGet || receiver.target is! Field) { |
| throw "Table indexing not directly on a static field" |
| " at ${node.location}"; |
| } |
| w.Table table = translator.getTable(receiver.target as Field)!; |
| codeGen.wrap(node.arguments.positional[0], w.NumType.i32); |
| if (name == '[]') { |
| b.table_get(table); |
| return table.type; |
| } else { |
| assert(name == '[]='); |
| codeGen.wrap(node.arguments.positional[1], table.type); |
| b.table_set(table); |
| return codeGen.voidMarker; |
| } |
| } |
| |
| // List.[] on list constants |
| if (receiver is ConstantExpression && |
| receiver.constant is ListConstant && |
| name == '[]') { |
| Expression arg = node.arguments.positional.single; |
| |
| // If the list is indexed by a constant, or the ABI index, just pick |
| // the element at that constant index. |
| int? constIndex; |
| if (arg is IntLiteral) { |
| constIndex = arg.value; |
| } else if (arg is ConstantExpression) { |
| Constant argConst = arg.constant; |
| if (argConst is IntConstant) { |
| constIndex = argConst.value; |
| } |
| } else if (arg is StaticInvocation) { |
| if (arg.target.enclosingLibrary.name == "dart.ffi" && |
| arg.name.text == "_abi") { |
| constIndex = kWasmAbiEnumIndex; |
| } |
| } |
| if (constIndex != null) { |
| final entries = (receiver.constant as ListConstant).entries; |
| if (0 <= constIndex && constIndex < entries.length) { |
| Expression element = ConstantExpression(entries[constIndex]); |
| return codeGen.wrap(element, typeOfExp(element)); |
| } |
| } |
| |
| return null; |
| } |
| |
| if (node.arguments.positional.length == 1) { |
| // Binary operator |
| Expression left = node.receiver; |
| Expression right = node.arguments.positional.single; |
| DartType argType = dartTypeOf(right); |
| w.ValueType leftType = translator.translateType(receiverType); |
| w.ValueType rightType = translator.translateType(argType); |
| var code = _binaryOperatorMap[leftType]?[rightType]?[name]; |
| if (code != null) { |
| w.ValueType outType = isComparison(name) ? w.NumType.i32 : leftType; |
| codeGen.wrap(left, leftType); |
| codeGen.wrap(right, rightType); |
| code(codeGen); |
| return outType; |
| } |
| } else if (node.arguments.positional.isEmpty) { |
| // Unary operator |
| Expression operand = node.receiver; |
| w.ValueType opType = translator.translateType(receiverType); |
| var code = _unaryOperatorMap[opType]?[name]; |
| if (code != null) { |
| codeGen.wrap(operand, opType); |
| code(codeGen); |
| return _unaryResultMap[name] ?? opType; |
| } |
| } |
| |
| return null; |
| } |
| |
| /// Generate inline code for an [EqualsCall] with an unboxed receiver. |
| w.ValueType? generateEqualsIntrinsic(EqualsCall node) { |
| w.ValueType leftType = typeOfExp(node.left); |
| w.ValueType rightType = typeOfExp(node.right); |
| |
| // Compare bool, Pointer or WasmI32. |
| if (leftType == w.NumType.i32 && rightType == w.NumType.i32) { |
| codeGen.wrap(node.left, w.NumType.i32); |
| codeGen.wrap(node.right, w.NumType.i32); |
| b.i32_eq(); |
| return w.NumType.i32; |
| } |
| |
| // Compare int or WasmI64. |
| if (leftType == w.NumType.i64 && rightType == w.NumType.i64) { |
| codeGen.wrap(node.left, w.NumType.i64); |
| codeGen.wrap(node.right, w.NumType.i64); |
| b.i64_eq(); |
| return w.NumType.i32; |
| } |
| |
| // Compare WasmF32. |
| if (leftType == w.NumType.f32 && rightType == w.NumType.f32) { |
| codeGen.wrap(node.left, w.NumType.f32); |
| codeGen.wrap(node.right, w.NumType.f32); |
| b.f32_eq(); |
| return w.NumType.i32; |
| } |
| |
| // Compare double or WasmF64. |
| if (leftType == doubleType && rightType == doubleType) { |
| codeGen.wrap(node.left, w.NumType.f64); |
| codeGen.wrap(node.right, w.NumType.f64); |
| b.f64_eq(); |
| return w.NumType.i32; |
| } |
| |
| return null; |
| } |
| |
| /// Generate inline code for a [StaticGet] if the member is an inlined |
| /// intrinsic. |
| w.ValueType? generateStaticGetterIntrinsic(StaticGet node) { |
| final Member target = node.target; |
| final Class? cls = target.enclosingClass; |
| |
| // ClassID getters |
| if (cls?.name == 'ClassID') { |
| final libAndClassName = translator.getPragma(target, "wasm:class-id"); |
| if (libAndClassName != null) { |
| List<String> libAndClassNameParts = libAndClassName.split("#"); |
| final String lib = libAndClassNameParts[0]; |
| final String className = libAndClassNameParts[1]; |
| Class cls = translator.libraries |
| .firstWhere((l) => l.name == lib && l.importUri.scheme == 'dart', |
| orElse: () => |
| throw 'Library $lib not found (${target.location})') |
| .classes |
| .firstWhere((c) => c.name == className, |
| orElse: () => |
| throw 'Class $className not found in library $lib ' |
| '(${target.location})'); |
| int classId = translator.classInfo[cls]!.classId; |
| b.i32_const(classId); |
| return w.NumType.i32; |
| } |
| |
| if (target.name.text == 'firstNonMasqueradedInterfaceClassCid') { |
| b.i32_const( |
| translator.classIdNumbering.firstNonMasqueradedInterfaceClassCid); |
| return w.NumType.i32; |
| } |
| } |
| |
| // nullptr |
| if (target.enclosingLibrary.name == "dart.ffi" && |
| target.name.text == "nullptr") { |
| // A Pointer is represented by its i32 address. |
| b.i32_const(0); |
| return w.NumType.i32; |
| } |
| |
| if (node.target.enclosingLibrary == translator.coreTypes.coreLibrary) { |
| switch (target.name.text) { |
| case "_isIntrinsified": |
| // This is part of the VM's [BigInt] implementation. We just return false. |
| // TODO(joshualitt): Can we find another way to reuse this patch file |
| // without hardcoding this case? |
| b.i32_const(0); |
| return w.NumType.i32; |
| case "_noSubstitutionIndex": |
| b.i32_const(RuntimeTypeInformation.noSubstitutionIndex); |
| return w.NumType.i32; |
| case "_typeRowDisplacementOffsets": |
| final type = translator |
| .translateStorageType(types.rtt.typeRowDisplacementOffsetsType) |
| .unpacked; |
| translator.constants.instantiateConstant( |
| b, types.rtt.typeRowDisplacementOffsets, type); |
| return type; |
| case "_typeRowDisplacementTable": |
| final type = translator |
| .translateStorageType(types.rtt.typeRowDisplacementTableType) |
| .unpacked; |
| translator.constants |
| .instantiateConstant(b, types.rtt.typeRowDisplacementTable, type); |
| return type; |
| case "_typeRowDisplacementSubstTable": |
| final type = translator |
| .translateStorageType(types.rtt.typeRowDisplacementSubstTableType) |
| .unpacked; |
| translator.constants.instantiateConstant( |
| b, types.rtt.typeRowDisplacementSubstTable, type); |
| return type; |
| case "_typeNames": |
| final type = |
| translator.translateStorageType(types.rtt.typeNamesType).unpacked; |
| if (translator.options.minify) { |
| b.ref_null((type as w.RefType).heapType); |
| } else { |
| translator.constants |
| .instantiateConstant(b, types.rtt.typeNames, type); |
| } |
| return type; |
| } |
| } |
| |
| return null; |
| } |
| |
| /// Generate inline code for a [StaticInvocation] if the member is an inlined |
| /// intrinsic. |
| w.ValueType? generateStaticIntrinsic(StaticInvocation node) { |
| String name = node.name.text; |
| final Procedure target = node.target; |
| final Library library = target.enclosingLibrary; |
| Class? cls = target.enclosingClass; |
| |
| if (target.isExtensionMember && library == translator.wasmLibrary) { |
| final (ext, extDescriptor) = translator.extensionOfMember(target); |
| final memberName = extDescriptor.name.text; |
| |
| // extension WasmArrayExt on WasmArray<T> |
| if (ext.name == 'WasmArrayExt') { |
| final dartWasmArrayType = dartTypeOf(node.arguments.positional.first); |
| final dartElementType = |
| (dartWasmArrayType as InterfaceType).typeArguments.single; |
| w.ArrayType arrayType = |
| translator.arrayTypeForDartType(dartElementType); |
| w.StorageType wasmType = arrayType.elementType.type; |
| |
| switch (memberName) { |
| case '[]': |
| final array = node.arguments.positional[0]; |
| final index = node.arguments.positional[1]; |
| codeGen.wrap(array, w.RefType.def(arrayType, nullable: false)); |
| codeGen.wrap(index, w.NumType.i64); |
| b.i32_wrap_i64(); |
| if (wasmType is w.PackedType) { |
| b.array_get_u(arrayType); |
| } else { |
| b.array_get(arrayType); |
| } |
| return wasmType.unpacked; |
| case '[]=': |
| final array = node.arguments.positional[0]; |
| final index = node.arguments.positional[1]; |
| final value = node.arguments.positional[2]; |
| codeGen.wrap(array, w.RefType.def(arrayType, nullable: false)); |
| codeGen.wrap(index, w.NumType.i64); |
| b.i32_wrap_i64(); |
| codeGen.wrap(value, typeOfExp(value)); |
| b.array_set(arrayType); |
| return codeGen.voidMarker; |
| case 'copy': |
| final destArray = node.arguments.positional[0]; |
| final destOffset = node.arguments.positional[1]; |
| final sourceArray = node.arguments.positional[2]; |
| final sourceOffset = node.arguments.positional[3]; |
| final size = node.arguments.positional[4]; |
| |
| codeGen.wrap(destArray, w.RefType.def(arrayType, nullable: false)); |
| codeGen.wrap(destOffset, w.NumType.i64); |
| b.i32_wrap_i64(); |
| codeGen.wrap( |
| sourceArray, w.RefType.def(arrayType, nullable: false)); |
| codeGen.wrap(sourceOffset, w.NumType.i64); |
| b.i32_wrap_i64(); |
| codeGen.wrap(size, w.NumType.i64); |
| b.i32_wrap_i64(); |
| b.array_copy(arrayType, arrayType); |
| return codeGen.voidMarker; |
| case 'fill': |
| final array = node.arguments.positional[0]; |
| final offset = node.arguments.positional[1]; |
| final value = node.arguments.positional[2]; |
| final size = node.arguments.positional[3]; |
| |
| codeGen.wrap(array, w.RefType.def(arrayType, nullable: false)); |
| codeGen.wrap(offset, w.NumType.i64); |
| b.i32_wrap_i64(); |
| codeGen.wrap(value, translator.translateType(dartElementType)); |
| codeGen.wrap(size, w.NumType.i64); |
| b.i32_wrap_i64(); |
| b.array_fill(arrayType); |
| return codeGen.voidMarker; |
| case 'clone': |
| // Until `array.new_copy` we need a special case for empty arrays. |
| // https://github.com/WebAssembly/gc/issues/367 |
| final sourceArray = node.arguments.positional[0]; |
| |
| final sourceArrayRefType = |
| w.RefType.def(arrayType, nullable: false); |
| final sourceArrayLocal = b.addLocal(sourceArrayRefType); |
| final newArrayLocal = b.addLocal(sourceArrayRefType); |
| |
| codeGen.wrap(sourceArray, sourceArrayRefType); |
| b.local_tee(sourceArrayLocal); |
| |
| b.array_len(); |
| b.if_([], [sourceArrayRefType]); |
| // Non-empty array. Create new one with the first element of the |
| // source, then copy the rest. |
| b.local_get(sourceArrayLocal); |
| b.i32_const(0); |
| b.array_get(arrayType); |
| b.local_get(sourceArrayLocal); |
| b.array_len(); |
| b.array_new(arrayType); |
| b.local_tee(newArrayLocal); // copy dest |
| b.i32_const(1); // copy dest offset |
| b.local_get(sourceArrayLocal); // copy source |
| b.i32_const(1); // copy source offset |
| |
| // copy size |
| b.local_get(sourceArrayLocal); |
| b.array_len(); |
| b.i32_const(1); |
| b.i32_sub(); |
| |
| b.array_copy(arrayType, arrayType); |
| |
| b.local_get(newArrayLocal); |
| b.else_(); |
| // Empty array. |
| b.array_new_fixed(arrayType, 0); |
| b.end(); |
| |
| return sourceArrayRefType; |
| default: |
| throw 'Unhandled WasmArrayExt external method: $memberName'; |
| } |
| } |
| |
| // extension (I8|I16|I32|I64|F32|F64)ArrayExt on WasmArray<...> |
| if (ext.name.endsWith('ArrayExt')) { |
| final dartWasmArrayType = dartTypeOf(node.arguments.positional.first); |
| final dartElementType = |
| (dartWasmArrayType as InterfaceType).typeArguments.single; |
| w.ArrayType arrayType = |
| translator.arrayTypeForDartType(dartElementType); |
| w.StorageType wasmType = arrayType.elementType.type; |
| |
| final innerExtend = |
| wasmType == w.PackedType.i8 || wasmType == w.PackedType.i16; |
| final outerExtend = |
| wasmType.unpacked == w.NumType.i32 || wasmType == w.NumType.f32; |
| |
| // WasmArray<I*>.(readSigned|readUnsigned|write) |
| // WasmArray<F*>.(read|write) |
| switch (memberName) { |
| case 'read': |
| case 'readSigned': |
| case 'readUnsigned': |
| final unsigned = memberName == 'readUnsigned'; |
| final array = node.arguments.positional[0]; |
| final index = node.arguments.positional[1]; |
| codeGen.wrap(array, w.RefType.def(arrayType, nullable: false)); |
| codeGen.wrap(index, w.NumType.i64); |
| b.i32_wrap_i64(); |
| if (innerExtend) { |
| if (unsigned) { |
| b.array_get_u(arrayType); |
| } else { |
| b.array_get_s(arrayType); |
| } |
| } else { |
| b.array_get(arrayType); |
| } |
| if (outerExtend) { |
| if (wasmType == w.NumType.f32) { |
| b.f64_promote_f32(); |
| return w.NumType.f64; |
| } else { |
| if (unsigned) { |
| b.i64_extend_i32_u(); |
| } else { |
| b.i64_extend_i32_s(); |
| } |
| return w.NumType.i64; |
| } |
| } |
| return wasmType.unpacked; |
| case 'write': |
| final array = node.arguments.positional[0]; |
| final index = node.arguments.positional[1]; |
| final value = node.arguments.positional[2]; |
| codeGen.wrap(array, w.RefType.def(arrayType, nullable: false)); |
| codeGen.wrap(index, w.NumType.i64); |
| b.i32_wrap_i64(); |
| codeGen.wrap(value, typeOfExp(value)); |
| if (outerExtend) { |
| if (wasmType == w.NumType.f32) { |
| b.f32_demote_f64(); |
| } else { |
| b.i32_wrap_i64(); |
| } |
| } |
| b.array_set(arrayType); |
| return codeGen.voidMarker; |
| } |
| } |
| } |
| |
| // dart:core static functions |
| if (node.target.enclosingLibrary == translator.coreTypes.coreLibrary) { |
| switch (name) { |
| case "identical": |
| Expression first = node.arguments.positional[0]; |
| Expression second = node.arguments.positional[1]; |
| DartType boolType = translator.coreTypes.boolNonNullableRawType; |
| InterfaceType intType = translator.coreTypes.intNonNullableRawType; |
| DartType doubleType = translator.coreTypes.doubleNonNullableRawType; |
| List<DartType> types = [dartTypeOf(first), dartTypeOf(second)]; |
| if (types.every((t) => t == intType)) { |
| codeGen.wrap(first, w.NumType.i64); |
| codeGen.wrap(second, w.NumType.i64); |
| b.i64_eq(); |
| return w.NumType.i32; |
| } |
| if (types.any((t) => |
| t is InterfaceType && |
| t != boolType && |
| t != doubleType && |
| !translator.hierarchy |
| .isSubInterfaceOf(intType.classNode, t.classNode))) { |
| codeGen.wrap(first, w.RefType.eq(nullable: true)); |
| codeGen.wrap(second, w.RefType.eq(nullable: true)); |
| b.ref_eq(); |
| return w.NumType.i32; |
| } |
| break; |
| case "_isObjectClassId": |
| final classId = node.arguments.positional.single; |
| |
| final objectClassId = translator |
| .classIdNumbering.classIds[translator.coreTypes.objectClass]!; |
| |
| codeGen.wrap(classId, w.NumType.i32); |
| b.emitClassIdRangeCheck([Range(objectClassId, objectClassId)]); |
| return w.NumType.i32; |
| case "_isClosureClassId": |
| final classId = node.arguments.positional.single; |
| |
| final ranges = translator.classIdNumbering |
| .getConcreteClassIdRanges(translator.coreTypes.functionClass); |
| assert(ranges.length <= 1); |
| |
| codeGen.wrap(classId, w.NumType.i32); |
| b.emitClassIdRangeCheck(ranges); |
| return w.NumType.i32; |
| case "_isRecordClassId": |
| final classId = node.arguments.positional.single; |
| |
| final ranges = translator.classIdNumbering |
| .getConcreteClassIdRanges(translator.coreTypes.recordClass); |
| assert(ranges.length <= 1); |
| |
| codeGen.wrap(classId, w.NumType.i32); |
| b.emitClassIdRangeCheck(ranges); |
| return w.NumType.i32; |
| } |
| } |
| |
| // dart:_object_helper static functions. |
| if (node.target.enclosingLibrary.name == 'dart._object_helper') { |
| switch (name) { |
| case "getIdentityHashField": |
| Expression arg = node.arguments.positional[0]; |
| w.ValueType objectType = translator.objectInfo.nonNullableType; |
| codeGen.wrap(arg, objectType); |
| b.struct_get(translator.objectInfo.struct, FieldIndex.identityHash); |
| b.i64_extend_i32_u(); |
| return w.NumType.i64; |
| case "setIdentityHashField": |
| Expression arg = node.arguments.positional[0]; |
| Expression hash = node.arguments.positional[1]; |
| w.ValueType objectType = translator.objectInfo.nonNullableType; |
| codeGen.wrap(arg, objectType); |
| codeGen.wrap(hash, w.NumType.i64); |
| b.i32_wrap_i64(); |
| b.struct_set(translator.objectInfo.struct, FieldIndex.identityHash); |
| return codeGen.voidMarker; |
| } |
| } |
| |
| // dart:_internal static functions |
| if (node.target.enclosingLibrary.name == "dart._internal") { |
| switch (name) { |
| case "unsafeCast": |
| case "unsafeCastOpaque": |
| Expression operand = node.arguments.positional.single; |
| // Just evaluate the operand and let the context convert it to the |
| // expected type. |
| return codeGen.wrap(operand, typeOfExp(operand)); |
| case "_nativeEffect": |
| // Ignore argument |
| return translator.voidMarker; |
| case "floatToIntBits": |
| codeGen.wrap(node.arguments.positional.single, w.NumType.f64); |
| b.f32_demote_f64(); |
| b.i32_reinterpret_f32(); |
| b.i64_extend_i32_u(); |
| return w.NumType.i64; |
| case "intBitsToFloat": |
| codeGen.wrap(node.arguments.positional.single, w.NumType.i64); |
| b.i32_wrap_i64(); |
| b.f32_reinterpret_i32(); |
| b.f64_promote_f32(); |
| return w.NumType.f64; |
| case "doubleToIntBits": |
| codeGen.wrap(node.arguments.positional.single, w.NumType.f64); |
| b.i64_reinterpret_f64(); |
| return w.NumType.i64; |
| case "intBitsToDouble": |
| codeGen.wrap(node.arguments.positional.single, w.NumType.i64); |
| b.f64_reinterpret_i64(); |
| return w.NumType.f64; |
| case "getID": |
| ClassInfo info = translator.topInfo; |
| codeGen.wrap(node.arguments.positional.single, info.nonNullableType); |
| b.struct_get(info.struct, FieldIndex.classId); |
| return w.NumType.i32; |
| case "makeListFixedLength": |
| return _changeListClassID(node, translator.fixedLengthListClass); |
| case "makeFixedListUnmodifiable": |
| return _changeListClassID(node, translator.immutableListClass); |
| } |
| } |
| |
| // dart:ffi static functions |
| if (node.target.enclosingLibrary.name == "dart.ffi") { |
| // Pointer.fromAddress |
| if (name == "fromAddress") { |
| // A Pointer is represented by its i32 address. |
| codeGen.wrap(node.arguments.positional.single, w.NumType.i64); |
| b.i32_wrap_i64(); |
| return w.NumType.i32; |
| } |
| |
| // Accesses to Pointer.value, Pointer.value=, Pointer.[], Pointer.[]= and |
| // the members of structs and unions are desugared by the FFI kernel |
| // transformations into calls to memory load and store functions. |
| RegExp loadStoreFunctionNames = RegExp("^_(load|store)" |
| "((Int|Uint)(8|16|32|64)|(Float|Double)(Unaligned)?|Pointer)\$"); |
| if (loadStoreFunctionNames.hasMatch(name)) { |
| Expression pointerArg = node.arguments.positional[0]; |
| Expression offsetArg = node.arguments.positional[1]; |
| codeGen.wrap(pointerArg, w.NumType.i32); |
| int offset; |
| if (offsetArg is IntLiteral) { |
| offset = offsetArg.value; |
| } else if (offsetArg is ConstantExpression && |
| offsetArg.constant is IntConstant) { |
| offset = (offsetArg.constant as IntConstant).value; |
| } else { |
| codeGen.wrap(offsetArg, w.NumType.i64); |
| b.i32_wrap_i64(); |
| b.i32_add(); |
| offset = 0; |
| } |
| switch (name) { |
| case "_loadInt8": |
| b.i64_load8_s(translator.ffiMemory, offset); |
| return w.NumType.i64; |
| case "_loadUint8": |
| b.i64_load8_u(translator.ffiMemory, offset); |
| return w.NumType.i64; |
| case "_loadInt16": |
| b.i64_load16_s(translator.ffiMemory, offset); |
| return w.NumType.i64; |
| case "_loadUint16": |
| b.i64_load16_u(translator.ffiMemory, offset); |
| return w.NumType.i64; |
| case "_loadInt32": |
| b.i64_load32_s(translator.ffiMemory, offset); |
| return w.NumType.i64; |
| case "_loadUint32": |
| b.i64_load32_u(translator.ffiMemory, offset); |
| return w.NumType.i64; |
| case "_loadInt64": |
| case "_loadUint64": |
| b.i64_load(translator.ffiMemory, offset); |
| return w.NumType.i64; |
| case "_loadFloat": |
| b.f32_load(translator.ffiMemory, offset); |
| b.f64_promote_f32(); |
| return w.NumType.f64; |
| case "_loadFloatUnaligned": |
| b.f32_load(translator.ffiMemory, offset, 0); |
| b.f64_promote_f32(); |
| return w.NumType.f64; |
| case "_loadDouble": |
| b.f64_load(translator.ffiMemory, offset); |
| return w.NumType.f64; |
| case "_loadDoubleUnaligned": |
| b.f64_load(translator.ffiMemory, offset, 0); |
| return w.NumType.f64; |
| case "_loadPointer": |
| b.i32_load(translator.ffiMemory, offset); |
| return w.NumType.i32; |
| case "_storeInt8": |
| case "_storeUint8": |
| codeGen.wrap(node.arguments.positional[2], w.NumType.i64); |
| b.i64_store8(translator.ffiMemory, offset); |
| return translator.voidMarker; |
| case "_storeInt16": |
| case "_storeUint16": |
| codeGen.wrap(node.arguments.positional[2], w.NumType.i64); |
| b.i64_store16(translator.ffiMemory, offset); |
| return translator.voidMarker; |
| case "_storeInt32": |
| case "_storeUint32": |
| codeGen.wrap(node.arguments.positional[2], w.NumType.i64); |
| b.i64_store32(translator.ffiMemory, offset); |
| return translator.voidMarker; |
| case "_storeInt64": |
| case "_storeUint64": |
| codeGen.wrap(node.arguments.positional[2], w.NumType.i64); |
| b.i64_store(translator.ffiMemory, offset); |
| return translator.voidMarker; |
| case "_storeFloat": |
| codeGen.wrap(node.arguments.positional[2], w.NumType.f64); |
| b.f32_demote_f64(); |
| b.f32_store(translator.ffiMemory, offset); |
| return translator.voidMarker; |
| case "_storeFloatUnaligned": |
| codeGen.wrap(node.arguments.positional[2], w.NumType.f64); |
| b.f32_demote_f64(); |
| b.f32_store(translator.ffiMemory, offset, 0); |
| return translator.voidMarker; |
| case "_storeDouble": |
| codeGen.wrap(node.arguments.positional[2], w.NumType.f64); |
| b.f64_store(translator.ffiMemory, offset); |
| return translator.voidMarker; |
| case "_storeDoubleUnaligned": |
| codeGen.wrap(node.arguments.positional[2], w.NumType.f64); |
| b.f64_store(translator.ffiMemory, offset, 0); |
| return translator.voidMarker; |
| case "_storePointer": |
| codeGen.wrap(node.arguments.positional[2], w.NumType.i32); |
| b.i32_store(translator.ffiMemory, offset); |
| return translator.voidMarker; |
| } |
| } |
| } |
| |
| if (cls != null && translator.isWasmType(cls)) { |
| // WasmArray constructors |
| if (cls == translator.wasmArrayClass) { |
| final dartElementType = node.arguments.types.single; |
| w.ArrayType arrayType = |
| translator.arrayTypeForDartType(dartElementType); |
| final elementType = arrayType.elementType.type; |
| final isDefaultable = elementType is! w.RefType || elementType.nullable; |
| if (!isDefaultable && node.arguments.positional.length == 1) { |
| throw 'The element type $dartElementType does not have a default value' |
| '- please use WasmArray<$dartElementType>.filled() instead.'; |
| } |
| |
| Expression length = node.arguments.positional[0]; |
| codeGen.wrap(length, w.NumType.i64); |
| b.i32_wrap_i64(); |
| if (node.arguments.positional.length < 2) { |
| b.array_new_default(arrayType); |
| } else { |
| Expression initialValue = node.arguments.positional[1]; |
| if (initialValue is NullLiteral || |
| initialValue is ConstantExpression && |
| initialValue.constant is NullConstant) { |
| // Initialize to `null` |
| b.array_new_default(arrayType); |
| } else { |
| // Initialize to the provided value |
| w.Local lengthTemp = b.addLocal(w.NumType.i32); |
| b.local_set(lengthTemp); |
| codeGen.wrap(initialValue, arrayType.elementType.type.unpacked); |
| b.local_get(lengthTemp); |
| b.array_new(arrayType); |
| } |
| } |
| return w.RefType.def(arrayType, nullable: false); |
| } |
| |
| // (WasmFuncRef|WasmFunction).fromRef constructors |
| if (cls == translator.wasmFunctionClass && name == "fromFuncRef") { |
| Expression ref = node.arguments.positional[0]; |
| w.RefType resultType = typeOfExp(node) as w.RefType; |
| w.Label succeed = b.block(const [], [resultType]); |
| codeGen.wrap(ref, w.RefType.func(nullable: false)); |
| b.br_on_cast(succeed, w.RefType.func(nullable: false), resultType); |
| codeGen.throwWasmRefError("a function with the expected signature"); |
| b.end(); // succeed |
| return resultType; |
| } |
| |
| // WasmFunction.fromFunction constructor |
| if (cls == translator.wasmFunctionClass) { |
| assert(name == "fromFunction"); |
| Expression f = node.arguments.positional[0]; |
| if (f is! ConstantExpression || f.constant is! StaticTearOffConstant) { |
| throw "Argument to WasmFunction.fromFunction isn't a static function"; |
| } |
| StaticTearOffConstant func = f.constant as StaticTearOffConstant; |
| w.BaseFunction wasmFunction = |
| translator.functions.getFunction(func.targetReference); |
| w.Global functionRef = translator.makeFunctionRef(wasmFunction); |
| b.global_get(functionRef); |
| return functionRef.type.type; |
| } |
| |
| // Wasm(AnyRef|FuncRef|EqRef|StructRef|I32|I64|F32|F64) constructors |
| Expression value = node.arguments.positional[0]; |
| w.StorageType targetType = translator.builtinTypes[cls]!; |
| switch (targetType) { |
| case w.NumType.i32: |
| switch (name) { |
| case "fromInt": |
| codeGen.wrap(value, w.NumType.i64); |
| b.i32_wrap_i64(); |
| return w.NumType.i32; |
| case "int8FromInt": |
| codeGen.wrap(value, w.NumType.i64); |
| b.i32_wrap_i64(); |
| b.i32_extend8_s(); |
| return w.NumType.i32; |
| case "uint8FromInt": |
| codeGen.wrap(value, w.NumType.i64); |
| b.i32_wrap_i64(); |
| b.i32_const(0xFF); |
| b.i32_and(); |
| return w.NumType.i32; |
| case "int16FromInt": |
| codeGen.wrap(value, w.NumType.i64); |
| b.i32_wrap_i64(); |
| b.i32_extend16_s(); |
| return w.NumType.i32; |
| case "uint16FromInt": |
| codeGen.wrap(value, w.NumType.i64); |
| b.i32_wrap_i64(); |
| b.i32_const(0xFFFF); |
| b.i32_and(); |
| return w.NumType.i32; |
| case "fromBool": |
| codeGen.wrap(value, w.NumType.i32); |
| return w.NumType.i32; |
| default: |
| throw 'Unhandled WasmI32 factory: $name'; |
| } |
| |
| case w.NumType.i64: |
| codeGen.wrap(value, w.NumType.i64); |
| return w.NumType.i64; |
| case w.NumType.f32: |
| codeGen.wrap(value, w.NumType.f64); |
| b.f32_demote_f64(); |
| return w.NumType.f32; |
| case w.NumType.f64: |
| codeGen.wrap(value, w.NumType.f64); |
| return w.NumType.f64; |
| default: |
| w.RefType valueType = targetType as w.RefType; |
| codeGen.wrap(value, valueType); |
| return valueType; |
| } |
| } |
| |
| // dart:_wasm static functions |
| if (node.target.enclosingLibrary.name == "dart._wasm") { |
| switch (name) { |
| case "_externalizeNonNullable": |
| final value = node.arguments.positional.single; |
| codeGen.wrap(value, w.RefType.any(nullable: false)); |
| b.extern_externalize(); |
| return w.RefType.extern(nullable: false); |
| case "_externalizeNullable": |
| final value = node.arguments.positional.single; |
| codeGen.wrap(value, w.RefType.any(nullable: true)); |
| b.extern_externalize(); |
| return w.RefType.extern(nullable: true); |
| case "_internalizeNonNullable": |
| final value = node.arguments.positional.single; |
| codeGen.wrap(value, w.RefType.extern(nullable: false)); |
| b.extern_internalize(); |
| return w.RefType.any(nullable: false); |
| case "_internalizeNullable": |
| final value = node.arguments.positional.single; |
| codeGen.wrap(value, w.RefType.extern(nullable: true)); |
| b.extern_internalize(); |
| return w.RefType.any(nullable: true); |
| case "_wasmExternRefIsNull": |
| final value = node.arguments.positional.single; |
| codeGen.wrap(value, w.RefType.extern(nullable: true)); |
| b.ref_is_null(); |
| return w.NumType.i32; |
| } |
| } |
| |
| return null; |
| } |
| |
| w.ValueType _changeListClassID(StaticInvocation node, Class newClass) { |
| ClassInfo receiverInfo = translator.classInfo[translator.listBaseClass]!; |
| codeGen.wrap( |
| node.arguments.positional.single, receiverInfo.nonNullableType); |
| w.Local receiverLocal = b.addLocal(receiverInfo.nonNullableType); |
| b.local_set(receiverLocal); |
| |
| ClassInfo newInfo = translator.classInfo[newClass]!; |
| translator.functions.recordClassAllocation(newInfo.classId); |
| b.i32_const(newInfo.classId); |
| b.i32_const(initialIdentityHash); |
| b.local_get(receiverLocal); |
| b.struct_get( |
| receiverInfo.struct, |
| translator.typeParameterIndex[ |
| translator.listBaseClass.typeParameters.single]!); |
| b.local_get(receiverLocal); |
| b.struct_get(receiverInfo.struct, FieldIndex.listLength); |
| b.local_get(receiverLocal); |
| b.struct_get(receiverInfo.struct, FieldIndex.listArray); |
| b.struct_new(newInfo.struct); |
| return newInfo.nonNullableType; |
| } |
| |
| /// Generate inline code for a [ConstructorInvocation] if the constructor is |
| /// an inlined intrinsic. |
| w.ValueType? generateConstructorIntrinsic(ConstructorInvocation node) { |
| String name = node.name.text; |
| |
| // WasmArray.literal |
| final klass = node.target.enclosingClass; |
| if (klass == translator.wasmArrayClass && name == "literal") { |
| w.ArrayType arrayType = |
| translator.arrayTypeForDartType(node.arguments.types.single); |
| w.ValueType elementType = arrayType.elementType.type.unpacked; |
| Expression value = node.arguments.positional[0]; |
| List<Expression> elements = value is ListLiteral |
| ? value.expressions |
| : value is ConstantExpression && value.constant is ListConstant |
| ? (value.constant as ListConstant) |
| .entries |
| .map(ConstantExpression.new) |
| .toList() |
| : throw "WasmArray.literal argument is not a list literal" |
| " at ${value.location}"; |
| for (Expression element in elements) { |
| codeGen.wrap(element, elementType); |
| } |
| b.array_new_fixed(arrayType, elements.length); |
| return w.RefType.def(arrayType, nullable: false); |
| } |
| |
| return null; |
| } |
| |
| /// Generate inline code for a [FunctionInvocation] if the function is an |
| /// inlined intrinsic. |
| w.ValueType? generateFunctionCallIntrinsic(FunctionInvocation node) { |
| Expression receiver = node.receiver; |
| |
| if (receiver is InstanceGet && |
| receiver.interfaceTarget == translator.wasmFunctionCall) { |
| // Receiver is a WasmFunction |
| assert(receiver.name.text == "call"); |
| w.RefType receiverType = |
| translator.translateType(dartTypeOf(receiver.receiver)) as w.RefType; |
| w.Local temp = b.addLocal(receiverType); |
| codeGen.wrap(receiver.receiver, receiverType); |
| b.local_set(temp); |
| w.FunctionType functionType = receiverType.heapType as w.FunctionType; |
| assert(node.arguments.positional.length == functionType.inputs.length); |
| for (int i = 0; i < node.arguments.positional.length; i++) { |
| codeGen.wrap(node.arguments.positional[i], functionType.inputs[i]); |
| } |
| b.local_get(temp); |
| b.call_ref(functionType); |
| return translator.outputOrVoid(functionType.outputs); |
| } |
| |
| if (receiver is InstanceInvocation && |
| receiver.interfaceTarget == translator.wasmTableCallIndirect) { |
| // Receiver is a WasmTable.callIndirect |
| assert(receiver.name.text == "callIndirect"); |
| Expression tableExp = receiver.receiver; |
| if (tableExp is! StaticGet || tableExp.target is! Field) { |
| throw "Table callIndirect not directly on a static field" |
| " at ${node.location}"; |
| } |
| w.Table table = translator.getTable(tableExp.target as Field)!; |
| InterfaceType wasmFunctionType = InterfaceType( |
| translator.wasmFunctionClass, |
| Nullability.nonNullable, |
| [receiver.arguments.types.single]); |
| w.RefType receiverType = |
| translator.translateType(wasmFunctionType) as w.RefType; |
| w.Local tableIndex = b.addLocal(w.NumType.i32); |
| codeGen.wrap(receiver.arguments.positional.single, w.NumType.i32); |
| b.local_set(tableIndex); |
| w.FunctionType functionType = receiverType.heapType as w.FunctionType; |
| assert(node.arguments.positional.length == functionType.inputs.length); |
| for (int i = 0; i < node.arguments.positional.length; i++) { |
| codeGen.wrap(node.arguments.positional[i], functionType.inputs[i]); |
| } |
| b.local_get(tableIndex); |
| b.call_indirect(functionType, table); |
| return translator.outputOrVoid(functionType.outputs); |
| } |
| |
| return null; |
| } |
| |
| /// Generate Wasm function for an intrinsic member. |
| bool generateMemberIntrinsic(Reference target, w.FunctionType functionType, |
| List<w.Local> paramLocals, w.Label? returnLabel) { |
| Member member = target.asMember; |
| if (member is! Procedure) return false; |
| String name = member.name.text; |
| FunctionNode functionNode = member.function; |
| |
| // Object.== |
| if (member == translator.coreTypes.objectEquals) { |
| b.local_get(paramLocals[0]); |
| b.local_get(paramLocals[1]); |
| b.ref_eq(); |
| return true; |
| } |
| |
| // Object.runtimeType |
| if (member.enclosingClass == translator.coreTypes.objectClass && |
| name == "runtimeType") { |
| // Simple redirect to `_getMasqueradedRuntimeType`. This is done to keep |
| // `Object.runtimeType` external. If `Object.runtimeType` is implemented |
| // in Dart, the TFA will conclude that `null.runtimeType` never returns, |
| // since it dispatches to `Object.runtimeType`, which uses the receiver |
| // as non-nullable. |
| w.Local receiver = paramLocals[0]; |
| b.local_get(receiver); |
| codeGen.call(translator.getMasqueradedRuntimeType.reference); |
| return true; |
| } |
| |
| // identical |
| if (member == translator.coreTypes.identicalProcedure) { |
| w.Local first = paramLocals[0]; |
| w.Local second = paramLocals[1]; |
| ClassInfo boolInfo = translator.classInfo[translator.boxedBoolClass]!; |
| ClassInfo intInfo = translator.classInfo[translator.boxedIntClass]!; |
| ClassInfo doubleInfo = translator.classInfo[translator.boxedDoubleClass]!; |
| w.Local cid = b.addLocal(w.NumType.i32); |
| |
| // If the references are identical, return true. |
| b.local_get(first); |
| b.local_get(second); |
| b.ref_eq(); |
| b.if_(); |
| b.i32_const(1); |
| b.return_(); |
| b.end(); |
| |
| w.Label fail = b.block(); |
| |
| // If either is `null`, or their class IDs are different, return false. |
| b.local_get(first); |
| b.br_on_null(fail); |
| b.struct_get(translator.topInfo.struct, FieldIndex.classId); |
| b.local_tee(cid); |
| b.local_get(second); |
| b.br_on_null(fail); |
| b.struct_get(translator.topInfo.struct, FieldIndex.classId); |
| b.i32_ne(); |
| b.br_if(fail); |
| |
| // Both bool? |
| b.local_get(cid); |
| b.i32_const(boolInfo.classId); |
| b.i32_eq(); |
| b.if_(); |
| b.local_get(first); |
| b.ref_cast(boolInfo.nonNullableType); |
| b.struct_get(boolInfo.struct, FieldIndex.boxValue); |
| b.local_get(second); |
| b.ref_cast(boolInfo.nonNullableType); |
| b.struct_get(boolInfo.struct, FieldIndex.boxValue); |
| b.i32_eq(); |
| b.return_(); |
| b.end(); |
| |
| // Both int? |
| b.local_get(cid); |
| b.i32_const(intInfo.classId); |
| b.i32_eq(); |
| b.if_(); |
| b.local_get(first); |
| b.ref_cast(intInfo.nonNullableType); |
| b.struct_get(intInfo.struct, FieldIndex.boxValue); |
| b.local_get(second); |
| b.ref_cast(intInfo.nonNullableType); |
| b.struct_get(intInfo.struct, FieldIndex.boxValue); |
| b.i64_eq(); |
| b.return_(); |
| b.end(); |
| |
| // Both double? |
| b.local_get(cid); |
| b.i32_const(doubleInfo.classId); |
| b.i32_eq(); |
| b.if_(); |
| b.local_get(first); |
| b.ref_cast(doubleInfo.nonNullableType); |
| b.struct_get(doubleInfo.struct, FieldIndex.boxValue); |
| b.i64_reinterpret_f64(); |
| b.local_get(second); |
| b.ref_cast(doubleInfo.nonNullableType); |
| b.struct_get(doubleInfo.struct, FieldIndex.boxValue); |
| b.i64_reinterpret_f64(); |
| b.i64_eq(); |
| b.return_(); |
| b.end(); |
| |
| // Not identical |
| b.end(); // fail |
| b.i32_const(0); |
| |
| return true; |
| } |
| |
| // _Closure._getClosureRuntimeType |
| if (member == translator.getClosureRuntimeType) { |
| final w.Local object = paramLocals[0]; |
| w.StructType closureBase = translator.closureLayouter.closureBaseStruct; |
| b.local_get(object); |
| b.ref_cast(w.RefType.def(closureBase, nullable: false)); |
| b.struct_get(closureBase, FieldIndex.closureRuntimeType); |
| return true; |
| } |
| |
| if (member.enclosingLibrary == translator.coreTypes.coreLibrary && |
| name == "identityHashCode") { |
| final w.Local arg = paramLocals[0]; |
| final w.Local nonNullArg = b.addLocal(translator.topInfo.nonNullableType); |
| final List<int> classIds = translator.valueClasses.keys |
| .map((cls) => translator.classInfo[cls]!.classId) |
| .toList() |
| ..sort(); |
| |
| // If the argument is `null`, return the hash code of `null`. |
| final w.Label notNull = |
| b.block(const [], [translator.topInfo.nonNullableType]); |
| b.local_get(arg); |
| b.br_on_non_null(notNull); |
| b.i64_const(null.hashCode); |
| b.return_(); |
| b.end(); // notNull |
| b.local_set(nonNullArg); |
| |
| // Branch on class ID. |
| final w.Label defaultLabel = b.block(); |
| final List<w.Label> labels = |
| List.generate(classIds.length, (_) => b.block()); |
| b.local_get(nonNullArg); |
| b.struct_get(translator.topInfo.struct, FieldIndex.classId); |
| int labelIndex = 0; |
| final List<w.Label> targets = List.generate(classIds.last + 1, (id) { |
| return id == classIds[labelIndex] ? labels[labelIndex++] : defaultLabel; |
| }); |
| b.br_table(targets, defaultLabel); |
| |
| // For value classes, dispatch to their `hashCode` implementation. |
| for (final int id in classIds.reversed) { |
| final Class cls = translator.valueClasses[translator.classes[id].cls!]!; |
| final Procedure hashCodeProcedure = |
| cls.procedures.firstWhere((p) => p.name.text == "hashCode"); |
| b.end(); // Jump target for class ID |
| b.local_get(nonNullArg); |
| codeGen.call(hashCodeProcedure.reference); |
| b.return_(); |
| } |
| |
| // For all other classes, dispatch to the `hashCode` implementation in |
| // `Object`. |
| b.end(); // defaultLabel |
| b.local_get(nonNullArg); |
| codeGen.call(translator.objectHashCode.reference); |
| return true; |
| } |
| |
| // _typeArguments |
| if (name == "_typeArguments" && |
| member.enclosingClass != translator.coreTypes.objectClass) { |
| Class cls = member.enclosingClass!; |
| ClassInfo classInfo = translator.classInfo[cls]!; |
| w.ArrayType arrayType = |
| (functionType.outputs.single as w.RefType).heapType as w.ArrayType; |
| w.Local object = paramLocals[0]; |
| w.Local preciseObject = codeGen.addLocal(classInfo.nonNullableType); |
| b.local_get(object); |
| b.ref_cast(classInfo.nonNullableType); |
| b.local_set(preciseObject); |
| for (int i = 0; i < cls.typeParameters.length; i++) { |
| TypeParameter typeParameter = cls.typeParameters[i]; |
| int typeParameterIndex = translator.typeParameterIndex[typeParameter]!; |
| b.local_get(preciseObject); |
| b.struct_get(classInfo.struct, typeParameterIndex); |
| } |
| b.array_new_fixed(arrayType, cls.typeParameters.length); |
| return true; |
| } |
| |
| // int members |
| if (member.enclosingClass == translator.boxedIntClass && |
| member.function.body == null) { |
| String op = member.name.text; |
| if (functionNode.requiredParameterCount == 0) { |
| CodeGenCallback? code = _unaryOperatorMap[intType]![op]; |
| if (code != null) { |
| w.ValueType resultType = _unaryResultMap[op] ?? intType; |
| w.ValueType inputType = functionType.inputs.single; |
| w.ValueType outputType = functionType.outputs.single; |
| b.local_get(paramLocals[0]); |
| translator.convertType(b, inputType, intType); |
| code(codeGen); |
| translator.convertType(b, resultType, outputType); |
| return true; |
| } |
| } else if (functionNode.requiredParameterCount == 1) { |
| CodeGenCallback? code = _binaryOperatorMap[intType]![intType]![op]; |
| if (code != null) { |
| w.ValueType leftType = functionType.inputs[0]; |
| w.ValueType rightType = functionType.inputs[1]; |
| w.ValueType outputType = functionType.outputs.single; |
| if (rightType == intType) { |
| // int parameter |
| b.local_get(paramLocals[0]); |
| translator.convertType(b, leftType, intType); |
| b.local_get(paramLocals[1]); |
| code(codeGen); |
| if (!isComparison(op)) { |
| translator.convertType(b, intType, outputType); |
| } |
| return true; |
| } |
| // num parameter |
| ClassInfo intInfo = translator.classInfo[translator.boxedIntClass]!; |
| w.Label intArg = b.block(const [], [intInfo.nonNullableType]); |
| b.local_get(paramLocals[1]); |
| b.br_on_cast(intArg, paramLocals[1].type as w.RefType, |
| intInfo.nonNullableType); |
| // double argument |
| b.drop(); |
| b.local_get(paramLocals[0]); |
| translator.convertType(b, leftType, intType); |
| b.f64_convert_i64_s(); |
| b.local_get(paramLocals[1]); |
| translator.convertType(b, rightType, doubleType); |
| // Inline double op |
| CodeGenCallback doubleCode = |
| _binaryOperatorMap[doubleType]![doubleType]![op]!; |
| doubleCode(codeGen); |
| if (!isComparison(op)) { |
| translator.convertType(b, doubleType, outputType); |
| } |
| b.return_(); |
| b.end(); |
| // int argument |
| translator.convertType(b, intInfo.nonNullableType, intType); |
| w.Local rightTemp = b.addLocal(intType); |
| b.local_set(rightTemp); |
| b.local_get(paramLocals[0]); |
| translator.convertType(b, leftType, intType); |
| b.local_get(rightTemp); |
| code(codeGen); |
| if (!isComparison(op)) { |
| translator.convertType(b, intType, outputType); |
| } |
| return true; |
| } |
| } |
| } |
| |
| // double unary members |
| if (member.enclosingClass == translator.boxedDoubleClass && |
| member.function.body == null) { |
| String op = member.name.text; |
| if (functionNode.requiredParameterCount == 0) { |
| CodeGenCallback? code = _unaryOperatorMap[doubleType]![op]; |
| if (code != null) { |
| w.ValueType resultType = _unaryResultMap[op] ?? doubleType; |
| w.ValueType inputType = functionType.inputs.single; |
| w.ValueType outputType = functionType.outputs.single; |
| b.local_get(paramLocals[0]); |
| translator.convertType(b, inputType, doubleType); |
| code(codeGen); |
| translator.convertType(b, resultType, outputType); |
| return true; |
| } |
| } |
| } |
| |
| if (member.enclosingClass == translator.closureClass && |
| name == "_isInstantiationClosure") { |
| assert(paramLocals.length == 1); |
| b.local_get(paramLocals[0]); // ref _Closure |
| b.emitInstantiationClosureCheck(translator); |
| return true; |
| } |
| |
| if (member.enclosingClass == translator.closureClass && |
| name == "_instantiatedClosure") { |
| assert(paramLocals.length == 1); |
| b.local_get(paramLocals[0]); // ref _Closure |
| b.emitGetInstantiatedClosure(translator); |
| return true; |
| } |
| |
| if (member.enclosingClass == translator.closureClass && |
| name == "_instantiationClosureTypeHash") { |
| assert(paramLocals.length == 1); |
| |
| // Instantiation context, to be passed to the hash function. |
| b.local_get(paramLocals[0]); // ref _Closure |
| b.ref_cast(w.RefType(translator.closureLayouter.closureBaseStruct, |
| nullable: false)); |
| b.struct_get(translator.closureLayouter.closureBaseStruct, |
| FieldIndex.closureContext); |
| b.ref_cast(w.RefType( |
| translator.closureLayouter.instantiationContextBaseStruct, |
| nullable: false)); |
| |
| // Hash function. |
| b.local_get(paramLocals[0]); // ref _Closure |
| b.emitGetInstantiatedClosure(translator); |
| b.emitGetClosureVtable(translator); |
| b.ref_cast(w.RefType.def( |
| translator.closureLayouter.genericVtableBaseStruct, |
| nullable: false)); |
| b.struct_get(translator.closureLayouter.genericVtableBaseStruct, |
| FieldIndex.vtableInstantiationTypeHashFunction); |
| b.call_ref( |
| translator.closureLayouter.instantiationClosureTypeHashFunctionType); |
| |
| return true; |
| } |
| |
| if (member.enclosingClass == translator.closureClass && |
| name == "_instantiationClosureTypeEquals") { |
| assert(paramLocals.length == 2); |
| |
| final w.StructType closureBaseStruct = |
| translator.closureLayouter.closureBaseStruct; |
| |
| final w.RefType instantiationContextBase = w.RefType( |
| translator.closureLayouter.instantiationContextBaseStruct, |
| nullable: false); |
| |
| b.local_get(paramLocals[0]); // ref _Closure |
| b.ref_cast(w.RefType(closureBaseStruct, nullable: false)); |
| b.struct_get(closureBaseStruct, FieldIndex.closureContext); |
| b.ref_cast(instantiationContextBase); |
| |
| b.local_get(paramLocals[1]); // ref _Closure |
| b.ref_cast(w.RefType(closureBaseStruct, nullable: false)); |
| b.struct_get(closureBaseStruct, FieldIndex.closureContext); |
| b.ref_cast(instantiationContextBase); |
| |
| b.local_get(paramLocals[0]); |
| b.emitGetInstantiatedClosure(translator); |
| b.emitGetClosureVtable(translator); |
| b.ref_cast(w.RefType.def( |
| translator.closureLayouter.genericVtableBaseStruct, |
| nullable: false)); |
| b.struct_get(translator.closureLayouter.genericVtableBaseStruct, |
| FieldIndex.vtableInstantiationTypeComparisonFunction); |
| |
| b.call_ref(translator |
| .closureLayouter.instantiationClosureTypeComparisonFunctionType); |
| |
| return true; |
| } |
| |
| if (member.enclosingClass == translator.closureClass && |
| name == "_isInstanceTearOff") { |
| assert(paramLocals.length == 1); |
| b.local_get(paramLocals[0]); // ref _Closure |
| b.emitTearOffCheck(translator); |
| return true; |
| } |
| |
| if (member.enclosingClass == translator.closureClass && |
| name == "_instanceTearOffReceiver") { |
| assert(paramLocals.length == 1); |
| b.local_get(paramLocals[0]); // ref _Closure |
| b.emitGetTearOffReceiver(translator); |
| return true; |
| } |
| |
| if (member.enclosingClass == translator.closureClass && name == "_vtable") { |
| assert(paramLocals.length == 1); |
| b.local_get(paramLocals[0]); // ref _Closure |
| b.emitGetClosureVtable(translator); |
| return true; |
| } |
| |
| if (member.enclosingClass == translator.coreTypes.functionClass && |
| name == "apply") { |
| assert(functionType.inputs.length == 3); |
| |
| final closureLocal = paramLocals[0]; // ref #ClosureBase |
| final posArgsNullableLocal = paramLocals[1]; // ref null Object |
| final namedArgsLocal = paramLocals[2]; // ref null Object |
| |
| // Create empty type arguments array. |
| final typeArgsLocal = b.addLocal(translator.makeArray( |
| b, translator.typeArrayType, 0, (elementType, elementIndex) {})); |
| b.local_set(typeArgsLocal); |
| |
| // Create empty list for positional args if the argument is null |
| final posArgsLocal = b.addLocal(translator.nullableObjectArrayTypeRef); |
| b.local_get(posArgsNullableLocal); |
| b.ref_is_null(); |
| |
| b.if_([], [translator.nullableObjectArrayTypeRef]); |
| translator.makeArray( |
| b, translator.nullableObjectArrayType, 0, (_, __) {}); |
| |
| b.else_(); |
| // List argument may be a custom list type, convert it to `WasmListBase` |
| // with `WasmListBase.of`. |
| translator.constants.instantiateConstant( |
| b, |
| TypeLiteralConstant(DynamicType()), |
| translator.types.nonNullableTypeType, |
| ); |
| b.local_get(posArgsNullableLocal); |
| b.ref_as_non_null(); |
| codeGen.call(translator.listOf.reference); |
| translator.getListBaseArray(b); |
| b.end(); |
| b.local_set(posArgsLocal); |
| |
| // Convert named argument map to list, to be passed to shape and type |
| // checkers and the dynamic call entry. |
| final namedArgsListLocal = |
| b.addLocal(translator.nullableObjectArrayTypeRef); |
| b.local_get(namedArgsLocal); |
| codeGen.call(translator.namedParameterMapToArray.reference); |
| b.local_set(namedArgsListLocal); |
| |
| final noSuchMethodBlock = b.block(); |
| |
| generateDynamicFunctionCall(translator, b, closureLocal, typeArgsLocal, |
| posArgsLocal, namedArgsListLocal, noSuchMethodBlock); |
| b.return_(); |
| |
| b.end(); // noSuchMethodBlock |
| |
| generateNoSuchMethodCall( |
| translator, |
| b, |
| () => b.local_get(closureLocal), |
| () => createInvocationObject(translator, b, "call", typeArgsLocal, |
| posArgsLocal, namedArgsListLocal)); |
| |
| return true; |
| } |
| |
| // Error._throw |
| if (member.enclosingClass == translator.errorClass && name == "_throw") { |
| final objectLocal = paramLocals[0]; // ref #Top |
| final stackTraceLocal = paramLocals[1]; // ref Object |
| |
| final notErrorBlock = b.block([], [objectLocal.type]); |
| |
| final errorClassInfo = translator.classInfo[translator.errorClass]!; |
| final errorRefType = errorClassInfo.nonNullableType; |
| final stackTraceFieldIndex = |
| translator.fieldIndex[translator.errorClassStackTraceField]!; |
| b.local_get(objectLocal); |
| b.br_on_cast_fail( |
| notErrorBlock, objectLocal.type as w.RefType, errorRefType); |
| |
| final errorLocal = b.addLocal(errorRefType); |
| b.local_tee(errorLocal); |
| |
| b.struct_get(errorClassInfo.struct, stackTraceFieldIndex); |
| b.ref_is_null(); |
| b.if_(); |
| b.local_get(errorLocal); |
| b.local_get(stackTraceLocal); |
| b.struct_set(errorClassInfo.struct, stackTraceFieldIndex); |
| b.end(); |
| |
| b.local_get(objectLocal); |
| b.end(); // notErrorBlock |
| |
| b.local_get(stackTraceLocal); |
| b.throw_(translator.exceptionTag); |
| |
| return true; |
| } |
| |
| if (member.enclosingClass == translator.wasmExternRefClass && |
| name == "nullRef") { |
| b.ref_null(w.HeapType.noextern); |
| return true; |
| } |
| |
| return false; |
| } |
| } |
