48b65f8cd5
- Added a general DoubleToIStub so that it's possible to extend to other platforms and non-truncating case. - This version handles all cases of truncation (previous code deopted in some cases) and all source/destination register combinations without clobbering any temps. R=yangguo@chromium.org Review URL: https://codereview.chromium.org/18612005 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15645 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
79 lines
3.3 KiB
JavaScript
79 lines
3.3 KiB
JavaScript
// Copyright 2012 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: --allow-natives-syntax
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function RunOneTruncationTest(a, b) {
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var temp = a | 0;
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assertEquals(b, temp);
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}
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function RunAllTruncationTests() {
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RunOneTruncationTest(0, 0);
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RunOneTruncationTest(0.5, 0);
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RunOneTruncationTest(-0.5, 0);
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RunOneTruncationTest(1.5, 1);
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RunOneTruncationTest(-1.5, -1);
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RunOneTruncationTest(5.5, 5);
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RunOneTruncationTest(-5.0, -5);
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RunOneTruncationTest(NaN, 0);
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RunOneTruncationTest(Infinity, 0);
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RunOneTruncationTest(-NaN, 0);
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RunOneTruncationTest(-Infinity, 0);
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RunOneTruncationTest(4.5036e+15, 0x1635E000);
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RunOneTruncationTest(-4.5036e+15, -372629504);
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RunOneTruncationTest(4503603922337791.0, -1);
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RunOneTruncationTest(-4503603922337791.0, 1);
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RunOneTruncationTest(4503601774854143.0, 2147483647);
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RunOneTruncationTest(-4503601774854143.0, -2147483647);
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RunOneTruncationTest(9007207844675582.0, -2);
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RunOneTruncationTest(-9007207844675582.0, 2);
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RunOneTruncationTest(2.4178527921507624e+24, -536870912);
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RunOneTruncationTest(-2.4178527921507624e+24, 536870912);
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RunOneTruncationTest(2.417853945072267e+24, -536870912);
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RunOneTruncationTest(-2.417853945072267e+24, 536870912);
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RunOneTruncationTest(4.8357055843015248e+24, -1073741824);
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RunOneTruncationTest(-4.8357055843015248e+24, 1073741824);
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RunOneTruncationTest(4.8357078901445341e+24, -1073741824);
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RunOneTruncationTest(-4.8357078901445341e+24, 1073741824);
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RunOneTruncationTest(9.6714111686030497e+24, -2147483648);
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RunOneTruncationTest(-9.6714111686030497e+24, -2147483648);
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RunOneTruncationTest(9.6714157802890681e+24, -2147483648);
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RunOneTruncationTest(-9.6714157802890681e+24, -2147483648);
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}
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RunAllTruncationTests();
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RunAllTruncationTests();
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%OptimizeFunctionOnNextCall(RunOneTruncationTest);
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RunAllTruncationTests();
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RunAllTruncationTests();
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