1bfbfc34ad
Review URL: https://codereview.chromium.org/10967064 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12588 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
77 lines
2.8 KiB
JavaScript
77 lines
2.8 KiB
JavaScript
// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --max-new-space-size=256 --allow-natives-syntax
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var test_id = 0;
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function testFloor(expect, input) {
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var test = new Function('n',
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'"' + (test_id++) + '";return Math.floor(n)');
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assertEquals(expect, test(input));
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assertEquals(expect, test(input));
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assertEquals(expect, test(input));
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%OptimizeFunctionOnNextCall(test);
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assertEquals(expect, test(input));
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}
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function zero() {
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var x = 0.5;
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return (function() { return x - 0.5; })();
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}
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function test() {
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testFloor(0, 0);
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testFloor(0, zero());
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testFloor(-0, -0);
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testFloor(Infinity, Infinity);
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testFloor(-Infinity, -Infinity);
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testFloor(NaN, NaN);
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}
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// Test in a loop to cover the custom IC and GC-related issues.
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for (var i = 0; i < 100; i++) {
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test();
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}
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// Regression test for a bug where a negative zero coming from Math.floor
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// was not properly handled by other operations.
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function floorsum(i, n) {
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var ret = Math.floor(n);
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while (--i > 0) {
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ret += Math.floor(n);
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}
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return ret;
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}
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assertEquals(-0, floorsum(1, -0));
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%OptimizeFunctionOnNextCall(floorsum);
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// The optimized function will deopt. Run it with enough iterations to try
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// to optimize via OSR (triggering the bug).
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assertEquals(-0, floorsum(100000, -0));
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