837ce0f9a3
Make sure we have at least two elements in the Map, otherwise we don't perform a proper dictionary lookup. Bug: chromium:781218 Change-Id: I471e3822b95c15e3a5b2ac54c8ad1f030bd54d40 Reviewed-on: https://chromium-review.googlesource.com/768708 Reviewed-by: Jaroslav Sevcik <jarin@chromium.org> Commit-Queue: Camillo Bruni <cbruni@chromium.org> Cr-Commit-Position: refs/heads/master@{#49345}
54 lines
1.1 KiB
JavaScript
54 lines
1.1 KiB
JavaScript
// Copyright 2017 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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var m = new Map();
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function C() { }
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// Make sure slack tracking kicks in and shrinks the default size to prevent
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// any further in-object properties.
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%CompleteInobjectSlackTracking(new C());
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function f(o) {
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o.x = true;
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}
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// Warm up {f}.
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f(new C());
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f(new C());
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var o = new C();
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%HeapObjectVerify(o);
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// We need at least 2 elements in the Map.
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m.set({}, 3);
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// This creates hash code on o.
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m.set(o, 1);
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// Add an out-of-object property.
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o.x = true;
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%HeapObjectVerify(o);
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// Delete the property (so we have no out-of-object properties).
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delete o.x;
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%HeapObjectVerify(o);
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// Ensure that growing the properties backing store in optimized code preserves
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// the hash.
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%OptimizeFunctionOnNextCall(f);
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f(o);
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%HeapObjectVerify(o);
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assertEquals(1, m.get(o));
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// Grow the Map and ensure the object is still found.
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for (let i = 0; i < 1000; i++) {
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let object = {};
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m.set(object, object);
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assertEquals(1, m.get(o));
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}
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