// 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 --nodead-code-elimination // Flags: --nofold-constants --nouse-gvn // Create a function to get a long series of removable simulates. // f() { // var _0 = <random>, _1 = <random>, ... _1000 = <random>, // _1001 = <random var> + <random var>, // _1002 = <random var> + <random var>, // ... // _99999 = <random var> + <random var>, // x = 1; // return _0; // } var seed = 1; function rand() { seed = seed * 171 % 1337 + 17; return (seed % 1000) / 1000; } function randi(max) { seed = seed * 131 % 1773 + 13; return seed % max; } function varname(i) { return "_" + i; } var source = "var "; for (var i = 0; i < 750; i++) { source += [varname(i), "=", rand(), ","].join(""); } for (var i = 750; i < 3000; i++) { source += [varname(i), "=", varname(randi(i)), "+", varname(randi(i)), ","].join(""); } source += "x=1; return _0;" var f = new Function(source); f(); %OptimizeFunctionOnNextCall(f); f();