67 lines
2.6 KiB
JavaScript
67 lines
2.6 KiB
JavaScript
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// 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: --expose-gc --allow-natives-syntax
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function f() {
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return 23;
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}
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function call(o) {
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return o['']();
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}
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function test() {
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var o1 = %ToFastProperties(Object.create({ foo:1 }, { '': { value:f }}));
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var o2 = %ToFastProperties(Object.create({ bar:1 }, { '': { value:f }}));
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var o3 = %ToFastProperties(Object.create({ baz:1 }, { '': { value:f }}));
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var o4 = %ToFastProperties(Object.create({ qux:1 }, { '': { value:f }}));
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var o5 = %ToFastProperties(Object.create({ loo:1 }, { '': { value:f }}));
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// Called twice on o1 to turn monomorphic.
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assertEquals(23, call(o1));
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assertEquals(23, call(o1));
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// Called on four other objects to turn megamorphic.
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assertEquals(23, call(o2));
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assertEquals(23, call(o3));
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assertEquals(23, call(o4));
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assertEquals(23, call(o5));
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return o1;
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}
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// Fill stub cache with entries.
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test();
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// Clear stub cache during GC.
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gc();
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// Turn IC megamorphic again.
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var oboom = test();
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// Optimize with previously cleared stub cache.
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%OptimizeFunctionOnNextCall(call);
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assertEquals(23, call(oboom));
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