// Copyright 2013 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 adding undefined from hole in double-holey to string. var a = [1.5, , 1.8]; function f(a, i, l) { var v = a[i]; return l + v; } %PrepareFunctionForOptimization(f); assertEquals("test1.5", f(a, 0, "test")); assertEquals("test1.5", f(a, 0, "test")); %OptimizeFunctionOnNextCall(f); assertEquals("testundefined", f(a, 1, "test")); // Test double-hole going through a phi to a string-add. function f2(b, a1, a2) { var v; if (b) { v = a1[0]; } else { v = a2[0]; } x = v * 2; return "test" + v + x; } %PrepareFunctionForOptimization(f2); f2(true, [1.4,1.8,,1.9], [1.4,1.8,,1.9]); f2(true, [1.4,1.8,,1.9], [1.4,1.8,,1.9]); f2(false, [1.4,1.8,,1.9], [1.4,1.8,,1.9]); f2(false, [1.4,1.8,,1.9], [1.4,1.8,,1.9]); %OptimizeFunctionOnNextCall(f2); assertEquals("testundefinedNaN", f2(false, [,1.8,,1.9], [,1.9,,1.9])); // Test converting smi-hole to double-hole. function t_smi(a) { a[0] = 1.5; } %PrepareFunctionForOptimization(t_smi); t_smi([1,,3]); t_smi([1,,3]); t_smi([1,,3]); %OptimizeFunctionOnNextCall(t_smi); var ta = [1,,3]; t_smi(ta); ta.__proto__ = [6,6,6]; assertEquals([1.5,6,3], ta); // Test converting double-hole to tagged-hole. function t(b) { b[1] = {}; } %PrepareFunctionForOptimization(t); t([1.4, 1.6,,1.8, NaN]); t([1.4, 1.6,,1.8, NaN]); %OptimizeFunctionOnNextCall(t); var a = [1.6, 1.8,,1.9, NaN]; t(a); a.__proto__ = [6,6,6,6,6]; assertEquals([1.6, {}, 6, 1.9, NaN], a);