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Edit File: simple-inlining.js
// Copyright 2010 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // Flags: --allow-natives-syntax // Test that we can inline a function that returns a constant. function TestInlineConstant(o) { // Effect context. o.f(); // Value context. var x = o.f(); assertEquals(42, x); assertEquals(42, o.f()); // Test context. if (!o.f()) { assertTrue(false); // Should not happen. } } var o1 = {}; o1.f = function() { return 42; }; for (var i = 0; i < 5; i++) TestInlineConstant(o1); %OptimizeFunctionOnNextCall(TestInlineConstant); TestInlineConstant(o1); TestInlineConstant({f: o1.f}); // Test that we can inline a function that returns 'this'. function TestInlineThis(o) { // Effect context. o.g(); // Value context. var x = o.g(); assertEquals(o, x); assertEquals(o, o.g()); // Test context. if (!o.g()) { assertTrue(false); // Should not happen. } } var o2 = {}; o2.g = function() { return this; }; for (var i = 0; i < 5; i++) TestInlineThis(o2); %OptimizeFunctionOnNextCall(TestInlineThis); TestInlineThis(o2); TestInlineThis({g: o2.g}); // Test that we can inline a function that returns 'this.x'. function TestInlineThisX(o) { // Effect context. o.h(); // Value context. var x = o.h(); assertEquals(42, x); assertEquals(42, o.h()); // Test context. if (!o.h()) { assertTrue(false); // Should not happen. } } var o3 = {y:0,x:42}; o3.h = function() { return this.x; }; for (var i = 0; i < 5; i++) TestInlineThisX(o3); %OptimizeFunctionOnNextCall(TestInlineThisX); TestInlineThisX(o3); TestInlineThisX({h: o3.h, x:42}); // Test that we can inline a function that returns 'this.x.length'. function TestInlineThisXLength(o) { // Effect context. o.h(); // Value context. var x = o.h(); assertEquals(3, x); assertEquals(3, o.h()); // Test context. if (!o.h()) { assertTrue(false); // Should not happen. } } var o4 = {x:[1,2,3]}; o4.h = function() { return this.x.length; }; for (var i = 0; i < 5; i++) TestInlineThisXLength(o4); %OptimizeFunctionOnNextCall(TestInlineThisXLength); TestInlineThisXLength(o4); TestInlineThisXLength({h: o4.h, x:[1,2,3]}); // Test that we can inline a function that returns 'this.x.y'. function TestInlineThisXY(o) { // Effect context. o.h(); // Value context. var x = o.h(); assertEquals(42, x); assertEquals(42, o.h()); // Test context. if (!o.h()) { assertTrue(false); // Should not happen. } } var o6 = {y:42} var o5 = {e:o6}; o5.h = function() { return this.e.y; }; for (var i = 0; i < 5; i++) TestInlineThisXY(o5); %OptimizeFunctionOnNextCall(TestInlineThisXY); TestInlineThisXY(o5); TestInlineThisXY({h: o5.h, e:o6}); // Test that we can inline a function that returns 'this.x.length'. function TestInlineThisX0(o) { // Effect context. o.foo(); // Value context. var x = o.foo(); assertEquals(42, x); assertEquals(42, o.foo()); // Test context. if (!o.foo()) { assertTrue(false); // Should not happen. } } var o7 = {x:[42,43,44]}; o7.foo = function() { return this.x[0]; }; for (var i = 0; i < 5; i++) TestInlineThisX0(o7); %OptimizeFunctionOnNextCall(TestInlineThisX0); TestInlineThisX0(o7); TestInlineThisX0({foo: o7.foo, x:[42,0,0]});