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| 1 // Copyright (c) 2014, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. |
| 4 // Test correctness of side effects tracking used by load to load forwarding. |
| 5 |
| 6 // VMOptions=--optimization-counter-threshold=10 --no-use-osr --enable-inlining-
annotations |
| 7 |
| 8 // Tests correct handling of redefinitions in aliasing computation. |
| 9 |
| 10 import "package:expect/expect.dart"; |
| 11 |
| 12 const alwaysInline = "AlwaysInline"; |
| 13 const noInline = "NeverInline"; |
| 14 |
| 15 var H = true; |
| 16 |
| 17 class A { |
| 18 B bb; |
| 19 |
| 20 @alwaysInline |
| 21 poly(p) { |
| 22 if (H) { |
| 23 bb = p; |
| 24 } |
| 25 B t = bb; |
| 26 t.bval = 123; |
| 27 return t.bval; |
| 28 } |
| 29 } |
| 30 |
| 31 class B { |
| 32 int bval = -1; |
| 33 |
| 34 @alwaysInline |
| 35 poly(p) { |
| 36 return bval; |
| 37 } |
| 38 } |
| 39 |
| 40 @alwaysInline |
| 41 foo(obj, p) => obj.poly(p); |
| 42 |
| 43 @noInline |
| 44 test() { |
| 45 A a = new A(); |
| 46 B b = new B(); |
| 47 foo(a, b); |
| 48 return b.bval; |
| 49 } |
| 50 |
| 51 main() { |
| 52 // Prime foo with polymorphic type feedback. |
| 53 foo(new B(), new A()); |
| 54 foo(new A(), new B()); |
| 55 |
| 56 for (var i = 0; i < 100; i++) test(); |
| 57 Expect.equals(123, test()); |
| 58 } |
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