Florian Schneider
71cb54714b
This reverts commit d44fec08b0.
Remove special-cases for known types (int, String, num, double, Smi). The generic
lowering into an instance call (_simpleInstanceOf) works just fine for these predefined
types.
Also, remove parameter for negated is-tests. Instead insert explicit negation when.
building the flow graph.
Diff to original CL:
* Correct number of arguments in invocation of _instanceOf in kernel_to_il.cc.
R=vegorov@google.com
TBR=vegorov@google.com
Review-Url: https://codereview.chromium.org/2748063003 .
80 lines
2.8 KiB
Dart
80 lines
2.8 KiB
Dart
// Copyright (c) 2012, 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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@patch class Object {
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// The VM has its own implementation of equals.
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@patch bool operator ==(other) native "Object_equals";
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// Helpers used to implement hashCode. If a hashCode is used, we remember it
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// in a weak table in the VM. A new hashCode value is calculated using a
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// number generator.
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static final _hashCodeRnd = new Random();
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static _getHash(obj) native "Object_getHash";
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static _setHash(obj, hash) native "Object_setHash";
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// Shared static implentation for hashCode and _identityHashCode.
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static int _objectHashCode(obj) {
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var result = _getHash(obj);
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if (result == 0) {
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// We want the hash to be a Smi value greater than 0.
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result = _hashCodeRnd.nextInt(0x40000000);
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while (result == 0) {
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result = _hashCodeRnd.nextInt(0x40000000);
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}
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_setHash(obj, result);
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}
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return result;
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}
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@patch int get hashCode => _objectHashCode(this);
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int get _identityHashCode => _objectHashCode(this);
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@patch String toString() native "Object_toString";
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// A statically dispatched version of Object.toString.
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static String _toString(obj) native "Object_toString";
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_noSuchMethod(bool isMethod,
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String memberName,
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int type,
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List arguments,
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Map<String, dynamic> namedArguments)
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native "Object_noSuchMethod";
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@patch dynamic noSuchMethod(Invocation invocation) {
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return _noSuchMethod(invocation.isMethod,
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internal.Symbol.getName(invocation.memberName),
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invocation._type,
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invocation.positionalArguments,
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_symbolMapToStringMap(invocation.namedArguments));
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}
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@patch Type get runtimeType native "Object_runtimeType";
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static bool _haveSameRuntimeType(a, b) native "Object_haveSameRuntimeType";
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// Call this function instead of inlining instanceof, thus collecting
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// type feedback and reducing code size of unoptimized code.
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bool _instanceOf(instantiator_type_arguments, type)
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native "Object_instanceOf";
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// Group of functions for implementing fast simple instance of.
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bool _simpleInstanceOf(type) native "Object_simpleInstanceOf";
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bool _simpleInstanceOfTrue(type) => true;
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bool _simpleInstanceOfFalse(type) => false;
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// Call this function instead of inlining 'as', thus collecting type
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// feedback. Returns receiver.
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_as(instantiator_type_arguments, type) native "Object_as";
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static _symbolMapToStringMap(Map<Symbol, dynamic> map) {
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var result = new Map<String, dynamic>();
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map.forEach((Symbol key, value) {
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result[internal.Symbol.getName(key)] = value;
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});
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return result;
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}
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}
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