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Edit File: regress-r4998.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. // Test for a broken fast-smi-loop that does not save the incremented value // of the loop index. If this test fails, it loops forever, and times out. // Flags: --nofull-compiler // Calling foo() spills the virtual frame. function foo() { return; } function bar() { var x1 = 3; var x2 = 3; var x3 = 3; var x4 = 3; var x5 = 3; var x6 = 3; var x7 = 3; var x8 = 3; var x9 = 3; var x10 = 3; var x11 = 3; var x12 = 3; var x13 = 3; foo(); x1 = 257; x2 = 258; x3 = 259; x4 = 260; x5 = 261; x6 = 262; x7 = 263; x8 = 264; x9 = 265; x10 = 266; x11 = 267; x12 = 268; x13 = 269; // The loop variable x7 is initialized to 3, // and then MakeMergeable is called on the virtual frame. // MakeMergeable has forced the loop variable x7 to be spilled, // so it is marked as synced // The back edge then merges its virtual frame, which incorrectly // claims that x7 is synced, and does not save the modified // value. for (x7 = 3; x7 < 10; ++x7) { foo(); } } bar(); function aliasing() { var x = 3; var j; for (j = 7; j < 11; ++j) { x = j; } assertEquals(10, x); assertEquals(11, j); } aliasing();