8d20f2fe37
Migrate Math.ceil, Math.round and Math.trunc to TurboFan code stubs, similar to what we did with Math.floor, and make these builtins properly optimizable in TurboFan via appropriate simplified operators NumberCeil, NumberRound and NumberTrunc, which are intended to be reusable for ToInteger and ToLength optimizations that will be done in a followup CL. Also allows us to kill the funky %RoundNumber runtime function, which was quite heavy. Improve test coverage for Math.ceil and Math.trunc a lot, especially making sure that we also properly trigger the TurboFan builtin reducer case. R=jarin@chromium.org BUG=v8:4059 LOG=n Review URL: https://codereview.chromium.org/1841993002 Cr-Commit-Position: refs/heads/master@{#35135}
79 lines
2.4 KiB
JavaScript
79 lines
2.4 KiB
JavaScript
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --max-semi-space-size=1 --allow-natives-syntax
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var test_id = 0;
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function testCeil(expect, input) {
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var test = new Function('n',
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'"' + (test_id++) + '";return Math.ceil(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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var test_double_input = new Function(
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'n',
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'"' + (test_id++) + '";return Math.ceil(+n)');
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assertEquals(expect, test_double_input(input));
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assertEquals(expect, test_double_input(input));
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assertEquals(expect, test_double_input(input));
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%OptimizeFunctionOnNextCall(test_double_input);
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assertEquals(expect, test_double_input(input));
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var test_double_output = new Function(
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'n',
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'"' + (test_id++) + '";return Math.ceil(n) + -0.0');
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assertEquals(expect, test_double_output(input));
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assertEquals(expect, test_double_output(input));
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assertEquals(expect, test_double_output(input));
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%OptimizeFunctionOnNextCall(test_double_output);
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assertEquals(expect, test_double_output(input));
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var test_via_floor = new Function(
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'n',
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'"' + (test_id++) + '";return -Math.floor(-n)');
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assertEquals(expect, test_via_floor(input));
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assertEquals(expect, test_via_floor(input));
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assertEquals(expect, test_via_floor(input));
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%OptimizeFunctionOnNextCall(test_via_floor);
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assertEquals(expect, test_via_floor(input));
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if (input <= 0) {
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var test_via_trunc = new Function(
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'n',
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'"' + (test_id++) + '";return Math.trunc(n)');
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assertEquals(expect, test_via_trunc(input));
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assertEquals(expect, test_via_trunc(input));
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assertEquals(expect, test_via_trunc(input));
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%OptimizeFunctionOnNextCall(test_via_trunc);
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assertEquals(expect, test_via_trunc(input));
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}
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}
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function test() {
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testCeil(0, 0);
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testCeil(+0, +0);
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testCeil(-0, -0);
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testCeil(1, 0.49999);
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testCeil(1, 0.6);
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testCeil(1, 0.5);
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testCeil(-0, -0.1);
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testCeil(-0, -0.5);
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testCeil(-0, -0.6);
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testCeil(-1, -1.6);
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testCeil(-0, -0.50001);
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testCeil(Infinity, Infinity);
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testCeil(-Infinity, -Infinity);
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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 < 10; i++) {
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test();
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new Array(i * 10000);
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}
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