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https://github.com/dart-lang/sdk
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a02ca2070f
Bug: Change-Id: If806f50a6254c187fc862fc7e5c19f45ccb9a8e8 Reviewed-on: https://dart-review.googlesource.com/8361 Reviewed-by: Ben Konyi <bkonyi@google.com>
156 lines
3 KiB
Dart
156 lines
3 KiB
Dart
// Copyright (c) 2011, 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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// Test various setter situations, testing special cases in optimizing compiler.
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// VMOptions=--optimization-counter-threshold=10 --no-use-osr
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import "package:expect/expect.dart";
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class A {
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int field = 0;
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}
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class B extends A {}
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void sameImplicitSetter() {
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oneTarget(var a, var v) {
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a.field = v;
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}
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A a = new A();
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B b = new B();
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// Optimize 'oneTarget' for one class, one target.
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for (int i = 0; i < 20; i++) {
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oneTarget(a, 5);
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Expect.equals(5, a.field);
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}
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// Deoptimize 'oneTarget', since class B is not expected.
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oneTarget(b, 6);
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Expect.equals(6, b.field);
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// Optimize 'oneTarget' for A and B classes, one target.
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for (int i = 0; i < 20; i++) {
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oneTarget(a, 7);
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Expect.equals(7, a.field);
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}
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oneTarget(b, 8);
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Expect.equals(8, b.field);
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}
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// Deoptimize when no feedback exists.
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void setterNoFeedback() {
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maybeSet(var a, var v, bool set_it) {
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if (set_it) {
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return a.field = v;
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}
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return -1;
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}
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A a = new A();
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for (int i = 0; i < 20; i++) {
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var r = maybeSet(a, 5, false);
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Expect.equals(0, a.field);
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Expect.equals(-1, r);
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}
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var r = maybeSet(a, 5, true);
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Expect.equals(5, a.field);
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Expect.equals(5, r);
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for (int i = 0; i < 20; i++) {
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var r = maybeSet(a, 6, true);
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Expect.equals(6, a.field);
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Expect.equals(6, r);
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}
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}
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// Check non-implicit setter
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class X {
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int pField = 0;
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set field(v) {
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pField = v;
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}
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get field => 10;
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}
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void sameNotImplicitSetter() {
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oneTarget(var a, var v) {
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return a.field = v;
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}
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incField(var a) {
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a.field++;
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}
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X x = new X();
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for (int i = 0; i < 20; i++) {
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var r = oneTarget(x, 3);
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Expect.equals(3, x.pField);
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Expect.equals(3, r);
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}
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oneTarget(x, 0);
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for (int i = 0; i < 20; i++) {
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incField(x);
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}
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Expect.equals(11, x.pField);
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}
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class Y {
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int field = 0;
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}
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multiImplicitSetter() {
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oneTarget(var a, var v) {
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return a.field = v;
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}
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// Both classes 'Y' and 'A' have a distinct field getter.
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A a = new A();
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Y y = new Y();
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for (int i = 0; i < 20; i++) {
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var r = oneTarget(a, 5);
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Expect.equals(5, a.field);
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Expect.equals(5, r);
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r = oneTarget(y, 6);
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Expect.equals(6, y.field);
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Expect.equals(6, r);
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}
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}
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class Z {
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int pField = 0;
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set field(v) {
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pField = v;
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}
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get field => 10;
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}
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multiNotImplicitSetter() {
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oneTarget(var a, var v) {
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return a.field = v;
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}
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Y y = new Y();
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Z z = new Z();
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for (int i = 0; i < 20; i++) {
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var r = oneTarget(y, 8);
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Expect.equals(8, y.field);
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Expect.equals(8, r);
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r = oneTarget(z, 12);
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Expect.equals(12, z.pField);
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Expect.equals(12, r);
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}
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A a = new A();
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var r = oneTarget(a, 11);
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Expect.equals(11, a.field);
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Expect.equals(11, r);
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}
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void main() {
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sameImplicitSetter();
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setterNoFeedback();
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sameNotImplicitSetter();
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multiImplicitSetter();
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multiNotImplicitSetter();
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}
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