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// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --nostress-opt --track-field-types
// Flags: --opt --no-always-opt
(function() {
var o = { text: "Hello World!" };
function A() {
// Assign twice to make the field non-constant.
// TODO(ishell): update test once constant field tracking is done.
this.a = {text: 'foo'};
this.a = o;
}
function readA(x) {
return x.a;
}
var a = new A();
assertUnoptimized(readA);
readA(a); readA(a); readA(a);
%OptimizeFunctionOnNextCall(readA);
assertEquals(readA(a), o);
assertOptimized(readA);
var b = new A();
b.b = o;
assertEquals(readA(b), o);
assertUnoptimized(readA);
%OptimizeFunctionOnNextCall(readA);
assertEquals(readA(a), o);
assertOptimized(readA);
assertEquals(readA(a), o);
assertEquals(readA(b), o);
assertOptimized(readA);
function readAFromB(x) {
return x.a;
}
assertUnoptimized(readAFromB);
readAFromB(b); readAFromB(b); readAFromB(b);
%OptimizeFunctionOnNextCall(readAFromB);
assertEquals(readAFromB(b), o);
assertOptimized(readAFromB);
var c = new A();
c.c = o;
assertOptimized(readA);
assertOptimized(readAFromB);
c.a = [1];
assertUnoptimized(readA);
assertUnoptimized(readAFromB);
assertEquals(readA(a), o);
assertEquals(readA(b), o);
assertEquals(readA(c), [1]);
assertEquals(readAFromB(b), o);
%OptimizeFunctionOnNextCall(readA);
assertEquals(readA(a), o);
%OptimizeFunctionOnNextCall(readAFromB);
assertEquals(readAFromB(b), o);
assertOptimized(readA);
a.a = [1];
assertEquals(readA(a), [1]);
assertEquals(readA(b), o);
assertEquals(readA(c), [1]);
assertOptimized(readA);
b.a = [1];
assertEquals(readA(a), [1]);
assertEquals(readA(b), [1]);
assertEquals(readA(c), [1]);
assertOptimized(readA);
assertOptimized(readAFromB);
})();
(function() {
function A() { this.x = 0; }
A.prototype = {y: 20};
function B(o) { return o.a.y; }
function C() { this.a = new A(); }
B(new C());
B(new C());
%OptimizeFunctionOnNextCall(B);
var c = new C();
assertEquals(20, B(c));
assertOptimized(B);
c.a.y = 10;
assertEquals(10, B(c));
assertUnoptimized(B);
var c = new C();
%OptimizeFunctionOnNextCall(B);
assertEquals(20, B(c));
assertOptimized(B);
c.a.y = 30;
assertEquals(30, B(c));
assertOptimized(B);
})();
(function() {
var x = new Object();
x.a = 1 + "Long string that results in a cons string";
x = JSON.parse('{"a":"Short"}');
})();
(function() {
var x = {y: {z: 1}};
x.y.z = 1.1;
})();
(function() {
function Foo(x) { this.x = x; }
// TODO(ishell): update test once constant field tracking is done.
var f0 = new Foo({x: 0});
f0.x = {x: 0}; // make Foo.x non-constant here.
var f1 = new Foo({x: 1});
var f2 = new Foo({x: 2});
var f3 = new Foo({x: 3});
function readX(f) { return f.x.x; }
assertEquals(readX(f1), 1);
assertEquals(readX(f2), 2);
assertUnoptimized(readX);
%OptimizeFunctionOnNextCall(readX);
assertEquals(readX(f3), 3);
assertOptimized(readX);
function writeX(f, x) { f.x = x; }
writeX(f1, {x: 11});
writeX(f2, {x: 22});
assertUnoptimized(writeX);
assertEquals(readX(f1), 11);
assertEquals(readX(f2), 22);
assertOptimized(readX);
%OptimizeFunctionOnNextCall(writeX);
writeX(f3, {x: 33});
assertEquals(readX(f3), 33);
assertOptimized(readX);
assertOptimized(writeX);
function addY(f, y) { f.y = y; }
writeX(f1, {a: "a"});
assertUnoptimized(readX);
assertUnoptimized(writeX);
})();
(function() {
function Narf(x) { this.x = x; }
var f1 = new Narf(1);
var f2 = new Narf(2);
var f3 = new Narf(3);
function baz(f, y) { f.y = y; }
baz(f1, {y: 9});
baz(f2, {y: 9});
baz(f2, {y: 9});
%OptimizeFunctionOnNextCall(baz);
baz(f2, {y: 9});
baz(f3, {a: -1});
assertUnoptimized(baz);
})();
(function() {
function Foo(x) { this.x = x; this.a = x; }
function Bar(x) { this.x = x; this.b = x; }
function readA(o) { return o.x.a; }
var f = new Foo({a:1});
var b = new Bar({a:2});
assertEquals(readA(f), 1);
assertEquals(readA(b), 2);
assertEquals(readA(f), 1);
assertEquals(readA(b), 2);
%OptimizeFunctionOnNextCall(readA);
assertEquals(readA(f), 1);
assertEquals(readA(b), 2);
assertOptimized(readA);
f.a.y = 0;
assertUnoptimized(readA);
})();
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