90d0f18007
Restored test code in allocation-site-info.js that was failing on ARM because of this bug. BUG= Review URL: https://codereview.chromium.org/12045017 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13462 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
127 lines
5.1 KiB
JavaScript
127 lines
5.1 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 --smi-only-arrays --expose-gc
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// Flags: --track-allocation-sites
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// Test element kind of objects.
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// Since --smi-only-arrays affects builtins, its default setting at compile
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// time sticks if built with snapshot. If --smi-only-arrays is deactivated
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// by default, only a no-snapshot build actually has smi-only arrays enabled
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// in this test case. Depending on whether smi-only arrays are actually
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// enabled, this test takes the appropriate code path to check smi-only arrays.
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support_smi_only_arrays = %HasFastSmiElements(new Array(1,2,3,4,5,6,7,8));
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if (support_smi_only_arrays) {
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print("Tests include smi-only arrays.");
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} else {
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print("Tests do NOT include smi-only arrays.");
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}
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var elements_kind = {
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fast_smi_only : 'fast smi only elements',
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fast : 'fast elements',
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fast_double : 'fast double elements',
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dictionary : 'dictionary elements',
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external_byte : 'external byte elements',
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external_unsigned_byte : 'external unsigned byte elements',
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external_short : 'external short elements',
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external_unsigned_short : 'external unsigned short elements',
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external_int : 'external int elements',
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external_unsigned_int : 'external unsigned int elements',
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external_float : 'external float elements',
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external_double : 'external double elements',
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external_pixel : 'external pixel elements'
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}
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function getKind(obj) {
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if (%HasFastSmiElements(obj)) return elements_kind.fast_smi_only;
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if (%HasFastObjectElements(obj)) return elements_kind.fast;
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if (%HasFastDoubleElements(obj)) return elements_kind.fast_double;
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if (%HasDictionaryElements(obj)) return elements_kind.dictionary;
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}
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function assertKind(expected, obj, name_opt) {
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if (!support_smi_only_arrays &&
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expected == elements_kind.fast_smi_only) {
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expected = elements_kind.fast;
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}
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assertEquals(expected, getKind(obj), name_opt);
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}
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if (support_smi_only_arrays) {
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function fastliteralcase(literal, value) {
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// var literal = [1, 2, 3];
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literal[0] = value;
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return literal;
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}
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function get_standard_literal() {
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var literal = [1, 2, 3];
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return literal;
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}
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// Case: [1,2,3] as allocation site
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obj = fastliteralcase(get_standard_literal(), 1);
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assertKind(elements_kind.fast_smi_only, obj);
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obj = fastliteralcase(get_standard_literal(), 1.5);
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assertKind(elements_kind.fast_double, obj);
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obj = fastliteralcase(get_standard_literal(), 2);
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assertKind(elements_kind.fast_double, obj);
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obj = fastliteralcase([5, 3, 2], 1.5);
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assertKind(elements_kind.fast_double, obj);
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obj = fastliteralcase([3, 6, 2], 1.5);
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assertKind(elements_kind.fast_double, obj);
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obj = fastliteralcase([2, 6, 3], 2);
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assertKind(elements_kind.fast_smi_only, obj);
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// Verify that we will not pretransition the double->fast path.
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obj = fastliteralcase(get_standard_literal(), "elliot");
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assertKind(elements_kind.fast, obj);
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// This fails until we turn off optimistic transitions to the
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// most general elements kind seen on keyed stores. It's a goal
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// to turn it off, but for now we need it.
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// obj = fastliteralcase(3);
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// assertKind(elements_kind.fast_double, obj);
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function fastliteralcase_smifast(value) {
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var literal = [1, 2, 3, 4];
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literal[0] = value;
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return literal;
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}
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obj = fastliteralcase_smifast(1);
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assertKind(elements_kind.fast_smi_only, obj);
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obj = fastliteralcase_smifast("carter");
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assertKind(elements_kind.fast, obj);
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obj = fastliteralcase_smifast(2);
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assertKind(elements_kind.fast, obj);
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}
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