31a3cfbc10
BUG=v8:8801 Change-Id: I9d9d9824c6c9ad0176bbfd3723da1b578b17c256 Reviewed-on: https://chromium-review.googlesource.com/c/1495555 Commit-Queue: Ross McIlroy <rmcilroy@chromium.org> Reviewed-by: Mythri Alle <mythria@chromium.org> Cr-Commit-Position: refs/heads/master@{#60001}
92 lines
3.3 KiB
JavaScript
92 lines
3.3 KiB
JavaScript
// Copyright 2012 the V8 project authors. All rights reserved.
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are
|
|
// met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
// * Redistributions in binary form must reproduce the above
|
|
// copyright notice, this list of conditions and the following
|
|
// disclaimer in the documentation and/or other materials provided
|
|
// with the distribution.
|
|
// * Neither the name of Google Inc. nor the names of its
|
|
// contributors may be used to endorse or promote products derived
|
|
// from this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
// Flags: --allow-natives-syntax
|
|
|
|
// Test that inlined object allocation works for different layouts of
|
|
// objects (e.g. in object properties, slack tracking in progress or
|
|
// changing of function prototypes)
|
|
|
|
function test_helper(construct, a, b) {
|
|
return new construct(a, b);
|
|
}
|
|
|
|
function test(construct) {
|
|
%DeoptimizeFunction(test);
|
|
%PrepareFunctionForOptimization(test_helper);
|
|
test_helper(construct, 0, 0);
|
|
test_helper(construct, 0, 0);
|
|
%OptimizeFunctionOnNextCall(test_helper);
|
|
// Test adding a new property after allocation was inlined.
|
|
var o = test_helper(construct, 1, 2);
|
|
o.z = 3;
|
|
assertEquals(1, o.x);
|
|
assertEquals(2, o.y);
|
|
assertEquals(3, o.z);
|
|
// Test changing the prototype after allocation was inlined.
|
|
construct.prototype = { z:6 };
|
|
var o = test_helper(construct, 4, 5);
|
|
assertEquals(4, o.x);
|
|
assertEquals(5, o.y);
|
|
assertEquals(6, o.z);
|
|
%DeoptimizeFunction(test_helper);
|
|
%ClearFunctionFeedback(test_helper);
|
|
}
|
|
|
|
function finalize_slack_tracking(construct) {
|
|
// Value chosen based on kGenerousAllocationCount = 8.
|
|
for (var i = 0; i < 8; i++) {
|
|
new construct(0, 0);
|
|
}
|
|
}
|
|
|
|
|
|
// Both properties are pre-allocated in object properties.
|
|
function ConstructInObjectPreAllocated(a, b) {
|
|
this.x = a;
|
|
this.y = b;
|
|
}
|
|
finalize_slack_tracking(ConstructInObjectPreAllocated);
|
|
test(ConstructInObjectPreAllocated);
|
|
|
|
|
|
// Both properties are unused in object properties.
|
|
function ConstructInObjectUnused(a, b) {
|
|
this.x = a < 0 ? 0 : a;
|
|
this.y = b > 0 ? b : 0;
|
|
}
|
|
finalize_slack_tracking(ConstructInObjectUnused);
|
|
test(ConstructInObjectUnused);
|
|
|
|
|
|
// Test inlined allocation while slack tracking is still in progress.
|
|
function ConstructWhileSlackTracking(a, b) {
|
|
this.x = a;
|
|
this.y = b;
|
|
}
|
|
test(ConstructWhileSlackTracking);
|