ed17bab89d
This adds support for lowering {JSCreateArguments} within outermost
frames of type {CreateArgumentsType::kMappedArguments}. It will hence
enable escape analysis to work with such objects and allow for further
optimization.
This also adds a new {NewMappedArgumentsElements} simplfied operator.
Note that escape analysis support for this new operator will be done as
a follow-up.
R=tebbi@chromium.org
Change-Id: I0e2fac25c654f796433f57b116964053b6b68635
Reviewed-on: https://chromium-review.googlesource.com/641454
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Yang Guo <yangguo@chromium.org>
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#47761}
86 lines
2.7 KiB
JavaScript
86 lines
2.7 KiB
JavaScript
// Copyright 2013 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: --noanalyze-environment-liveness
|
|
|
|
Debug = debug.Debug
|
|
|
|
var error = null;
|
|
var array = ["a", "b", "c"];
|
|
var result = null;
|
|
|
|
function listener(event, exec_state, event_data, data) {
|
|
try {
|
|
if (event == Debug.DebugEvent.Break) {
|
|
result = exec_state.frame(0).evaluate('arguments').value();
|
|
}
|
|
} catch (e) {
|
|
error = e;
|
|
}
|
|
};
|
|
|
|
Debug.setListener(listener);
|
|
|
|
|
|
function f(a, b) {
|
|
arguments;
|
|
debugger; // Arguments object is already materialized.
|
|
}
|
|
|
|
result = null;
|
|
f.apply(this, array);
|
|
assertArrayEquals(array, result);
|
|
result = null;
|
|
f("a", "b", "c");
|
|
assertArrayEquals(array, result);
|
|
assertNull(error);
|
|
|
|
function g(a, b) {
|
|
debugger; // Arguments object is not yet materialized.
|
|
}
|
|
|
|
result = null;
|
|
g.apply(this, array);
|
|
assertArrayEquals(array, result);
|
|
result = null;
|
|
g("a", "b", "c");
|
|
assertArrayEquals(array, result);
|
|
assertNull(error);
|
|
|
|
function h(a, b) {
|
|
var arguments = undefined;
|
|
debugger; // Arguments already used as local variable.
|
|
}
|
|
|
|
result = null;
|
|
h.apply(this, array);
|
|
assertEquals(undefined, result);
|
|
result = null;
|
|
h("a", "b", "c");
|
|
assertEquals(undefined, result);
|
|
assertNull(error);
|