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}
99 lines
4.2 KiB
JavaScript
99 lines
4.2 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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// Flags: --expose-debug-as debug --allow-natives-syntax
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// Test the mirror object for scripts.
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function testScriptMirror(f, file_name, file_lines, type, compilation_type,
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source, eval_from_line) {
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// Create mirror and JSON representation.
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var mirror = debug.MakeMirror(f).script();
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var serializer = debug.MakeMirrorSerializer();
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var json = JSON.stringify(serializer.serializeValue(mirror));
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// Check the mirror hierachy.
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assertTrue(mirror instanceof debug.Mirror);
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assertFalse(mirror instanceof debug.ValueMirror);
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assertTrue(mirror instanceof debug.ScriptMirror);
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// Check the mirror properties.
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assertTrue(mirror.isScript());
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assertEquals('script', mirror.type());
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var name = mirror.name();
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if (name) {
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assertEquals(file_name, name.substring(name.length - file_name.length));
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} else {
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assertTrue(file_name === null);
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}
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assertEquals(0, mirror.lineOffset());
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assertEquals(0, mirror.columnOffset());
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if (file_lines > 0) {
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assertEquals(file_lines, mirror.lineCount());
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}
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assertEquals(type, mirror.scriptType());
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assertEquals(compilation_type, mirror.compilationType(), "compilation type");
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if (source) {
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assertEquals(source, mirror.source());
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}
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if (eval_from_line) {
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assertEquals(eval_from_line, mirror.evalFromLocation().line);
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}
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// Parse JSON representation and check.
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var fromJSON = JSON.parse(json);
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assertEquals('script', fromJSON.type);
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name = fromJSON.name;
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if (name) {
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assertEquals(file_name, name.substring(name.length - file_name.length));
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} else {
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assertTrue(file_name === null);
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}
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assertEquals(0, fromJSON.lineOffset);
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assertEquals(0, fromJSON.columnOffset);
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if (file_lines > 0) {
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assertEquals(file_lines, fromJSON.lineCount);
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}
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assertEquals(type, fromJSON.scriptType);
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assertEquals(compilation_type, fromJSON.compilationType);
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}
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// Test the script mirror for different functions.
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testScriptMirror(function(){}, 'mirror-script.js', 99, 2, 0);
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testScriptMirror(Math.abs, 'native math.js', -1, 0, 0);
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testScriptMirror(eval('(function(){})'), null, 1, 2, 1, '(function(){})', 87);
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testScriptMirror(eval('(function(){\n })'), null, 2, 2, 1, '(function(){\n })', 88);
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// Test taking slices of source.
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var mirror = debug.MakeMirror(eval('(function(){\n 1;\n})')).script();
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assertEquals('(function(){\n', mirror.sourceSlice(0, 1).sourceText());
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assertEquals(' 1;\n', mirror.sourceSlice(1, 2).sourceText());
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assertEquals('})', mirror.sourceSlice(2, 3).sourceText());
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assertEquals('(function(){\n 1;\n', mirror.sourceSlice(0, 2).sourceText());
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assertEquals(' 1;\n})', mirror.sourceSlice(1, 3).sourceText());
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assertEquals('(function(){\n 1;\n})', mirror.sourceSlice(0, 3).sourceText());
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