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// Copyright 2011 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: --max-semi-space-size=1 --allow-natives-syntax
var test_id = 0;
function testFloor(expect, input) {
var test = new Function('n',
'"' + (test_id++) + '";return Math.floor(n)');
assertEquals(expect, test(input));
assertEquals(expect, test(input));
assertEquals(expect, test(input));
%OptimizeFunctionOnNextCall(test);
assertEquals(expect, test(input));
var test_double_output = new Function(
'n',
'"' + (test_id++) + '";return Math.floor(n) + -0.0');
assertEquals(expect, test_double_output(input));
assertEquals(expect, test_double_output(input));
assertEquals(expect, test_double_output(input));
%OptimizeFunctionOnNextCall(test_double_output);
assertEquals(expect, test_double_output(input));
}
function zero() {
var x = 0.5;
return (function() { return x - 0.5; })();
}
function test() {
testFloor(0, 0);
testFloor(0, zero());
testFloor(-0, -0);
testFloor(Infinity, Infinity);
testFloor(-Infinity, -Infinity);
testFloor(NaN, NaN);
}
// Test in a loop to cover the custom IC and GC-related issues.
for (var i = 0; i < 100; i++) {
test();
}
// Regression test for a bug where a negative zero coming from Math.floor
// was not properly handled by other operations.
function floorsum(i, n) {
var ret = Math.floor(n);
while (--i > 0) {
ret += Math.floor(n);
}
return ret;
}
assertEquals(-0, floorsum(1, -0));
%OptimizeFunctionOnNextCall(floorsum);
// The optimized function will deopt. Run it with enough iterations to try
// to optimize via OSR (triggering the bug).
assertEquals(-0, floorsum(100000, -0));
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