9dd35ee2f9
* Fast runtime calls for div and mod. * Fix assembly and disassembly of multiply instructions. * Strength reduce and inline multiplications to shift-add. * Strength reduce and inline mod by power of 2. * Strength reduce mod by other small integers to mul. * Strength reduce div by 2 and 3. Review URL: http://codereview.chromium.org/155047 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@2355 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
101 lines
4.0 KiB
JavaScript
101 lines
4.0 KiB
JavaScript
// Copyright 2008 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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// Ensure that operations on small integers handle -0.
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var zero = 0;
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var one = 1;
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var minus_one = -1;
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var two = 2;
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var four = 4;
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var minus_two = -2;
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var minus_four = -4;
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// variable op variable
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assertEquals(one / (-zero), -Infinity, "one / -0 I");
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assertEquals(one / (zero * minus_one), -Infinity, "one / -1");
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assertEquals(one / (minus_one * zero), -Infinity, "one / -0 II");
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assertEquals(one / (zero * zero), Infinity, "one / 0 I");
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assertEquals(one / (minus_one * minus_one), 1, "one / 1");
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assertEquals(one / (zero / minus_one), -Infinity, "one / -0 III");
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assertEquals(one / (zero / one), Infinity, "one / 0 II");
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assertEquals(one / (minus_four % two), -Infinity, "foo");
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assertEquals(one / (minus_four % minus_two), -Infinity, "foo");
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assertEquals(one / (four % two), Infinity, "foo");
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assertEquals(one / (four % minus_two), Infinity, "foo");
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// literal op variable
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assertEquals(one / (0 * minus_one), -Infinity, "bar");
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assertEquals(one / (-1 * zero), -Infinity, "bar");
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assertEquals(one / (0 * zero), Infinity, "bar");
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assertEquals(one / (-1 * minus_one), 1, "bar");
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assertEquals(one / (0 / minus_one), -Infinity, "baz");
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assertEquals(one / (0 / one), Infinity, "baz");
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assertEquals(one / (-4 % two), -Infinity, "baz");
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assertEquals(one / (-4 % minus_two), -Infinity, "baz");
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assertEquals(one / (4 % two), Infinity, "baz");
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assertEquals(one / (4 % minus_two), Infinity, "baz");
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// variable op literal
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assertEquals(one / (zero * -1), -Infinity, "fizz");
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assertEquals(one / (minus_one * 0), -Infinity, "fizz");
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assertEquals(one / (zero * 0), Infinity, "fizz");
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assertEquals(one / (minus_one * -1), 1, "fizz");
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assertEquals(one / (zero / -1), -Infinity, "buzz");
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assertEquals(one / (zero / 1), Infinity, "buzz");
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assertEquals(one / (minus_four % 2), -Infinity, "buzz");
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assertEquals(one / (minus_four % -2), -Infinity, "buzz");
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assertEquals(one / (four % 2), Infinity, "buzz");
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assertEquals(one / (four % -2), Infinity, "buzz");
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// literal op literal
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assertEquals(one / (-0), -Infinity, "fisk1");
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assertEquals(one / (0 * -1), -Infinity, "fisk2");
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assertEquals(one / (-1 * 0), -Infinity, "fisk3");
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assertEquals(one / (0 * 0), Infinity, "fisk4");
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assertEquals(one / (-1 * -1), 1, "fisk5");
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assertEquals(one / (0 / -1), -Infinity, "hest");
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assertEquals(one / (0 / 1), Infinity, "hest");
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assertEquals(one / (-4 % 2), -Infinity, "fiskhest");
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assertEquals(one / (-4 % -2), -Infinity, "fiskhest");
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assertEquals(one / (4 % 2), Infinity, "fiskhest");
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assertEquals(one / (4 % -2), Infinity, "fiskhest");
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