Jacob Richman
d1fa3c67af
BUG= R=asgerf@google.com Review-Url: https://codereview.chromium.org/2747113004 .
107 lines
3.1 KiB
Dart
107 lines
3.1 KiB
Dart
// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library kernel.target.vm;
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import '../ast.dart';
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import '../class_hierarchy.dart';
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import '../core_types.dart';
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import '../transformations/continuation.dart' as cont;
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import '../transformations/erasure.dart';
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import '../transformations/insert_covariance_checks.dart';
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import '../transformations/insert_type_checks.dart';
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import '../transformations/mixin_full_resolution.dart' as mix;
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import '../transformations/sanitize_for_vm.dart';
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import '../transformations/setup_builtin_library.dart' as setup_builtin_library;
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import '../transformations/treeshaker.dart';
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import 'targets.dart';
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/// Specializes the kernel IR to the Dart VM.
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class VmTarget extends Target {
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final TargetFlags flags;
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VmTarget(this.flags);
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bool get strongMode => flags.strongMode;
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/// The VM patch files are not strong mode clean, so we adopt a hybrid mode
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/// where the SDK is internally unchecked, but trusted to satisfy the types
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/// declared on its interface.
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bool get strongModeSdk => false;
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String get name => 'vm';
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// This is the order that bootstrap libraries are loaded according to
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// `runtime/vm/object_store.h`.
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List<String> get extraRequiredLibraries => const <String>[
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'dart:async',
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'dart:collection',
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'dart:convert',
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'dart:developer',
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'dart:_internal',
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'dart:isolate',
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'dart:math',
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// The library dart:mirrors may be ignored by the VM, e.g. when built in
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// PRODUCT mode.
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'dart:mirrors',
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'dart:profiler',
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'dart:typed_data',
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'dart:vmservice_io',
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'dart:_vmservice',
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'dart:_builtin',
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'dart:nativewrappers',
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'dart:io',
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];
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ClassHierarchy _hierarchy;
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void performModularTransformations(Program program) {
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var mixins = new mix.MixinFullResolution()..transform(program);
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_hierarchy = mixins.hierarchy;
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}
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void performGlobalTransformations(Program program) {
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var coreTypes = new CoreTypes(program);
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if (strongMode) {
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new InsertTypeChecks(hierarchy: _hierarchy, coreTypes: coreTypes)
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.transformProgram(program);
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new InsertCovarianceChecks(hierarchy: _hierarchy, coreTypes: coreTypes)
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.transformProgram(program);
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}
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if (flags.treeShake) {
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performTreeShaking(program);
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}
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cont.transformProgram(program);
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// Repair `_getMainClosure()` function in dart:_builtin.
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setup_builtin_library.transformProgram(program);
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if (strongMode) {
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performErasure(program);
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}
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new SanitizeForVM().transform(program);
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}
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void performTreeShaking(Program program) {
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var coreTypes = new CoreTypes(program);
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new TreeShaker(program,
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hierarchy: _hierarchy,
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coreTypes: coreTypes,
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strongMode: strongMode,
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programRoots: flags.programRoots)
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.transform(program);
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_hierarchy = null; // Hierarchy must be recomputed.
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}
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void performErasure(Program program) {
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new Erasure().transform(program);
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}
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}
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