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09a8440b45
PR-URL: https://github.com/nodejs/node/pull/51362 Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
74 lines
2.6 KiB
JavaScript
74 lines
2.6 KiB
JavaScript
// Copyright 2013 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 --turbofan
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// Allocation site for empty smi arrays.
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function foo() {
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return new Array();
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}
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var a = foo();
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// Transition from smi to double.
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a[0] = 1.1;
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// Emit a TransitionElementsKindStub which transitions from double to object.
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function store(a, x) {
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a[0] = x;
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};
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%PrepareFunctionForOptimization(store);
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store([1.1], 'a');
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store([1.1], 1.1);
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%OptimizeFunctionOnNextCall(store);
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// Use the TransitionElementsKindStub to transition from double to object.
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var b = foo();
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b[0] = 1.1;
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assertTrue(%HasDoubleElements(b));
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store(b, 'a');
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assertTrue(%HasObjectElements(b));
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assertOptimized(store);
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// Test transitions with polymorphic feedback.
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function poly_store(a, x) {
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a[0] = x;
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};
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%PrepareFunctionForOptimization(poly_store);
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poly_store([1.1], 'a');
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poly_store([1.1], 2.1);
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var x = foo();
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x[0] = 1.1;
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x.x = 12;
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poly_store(x, 'a');
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%OptimizeFunctionOnNextCall(poly_store);
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var c = foo();
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c[0] = 1.1;
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assertTrue(%HasDoubleElements(c));
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poly_store(c, 'a');
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assertTrue(%HasObjectElements(c));
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assertOptimized(poly_store);
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