6904a8120b
.. mostly mentions in mjsunit `Flags:` lines and in comments. Bug: v8:10386 Change-Id: If79dfdc448d0a3f19883ef1f816e77e750cb4061 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3865964 Commit-Queue: Jakob Linke <jgruber@chromium.org> Reviewed-by: Michael Achenbach <machenbach@chromium.org> Reviewed-by: Leszek Swirski <leszeks@chromium.org> Cr-Commit-Position: refs/heads/main@{#82852}
59 lines
2.6 KiB
JavaScript
59 lines
2.6 KiB
JavaScript
// Copyright 2021 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 --concurrent-recompilation
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// Flags: --no-always-turbofan
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function f1(a, i) {
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return a[i] + 0.5;
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}
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%PrepareFunctionForOptimization(f1);
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var arr = [0.0,,2.5];
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assertEquals(0.5, f1(arr, 0));
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assertEquals(0.5, f1(arr, 0));
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// Optimized code of f1 depends on initial object and array maps.
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%DisableOptimizationFinalization();
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%OptimizeFunctionOnNextCall(f1, "concurrent");
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// Kick off recompilation.
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assertEquals(0.5, f1(arr, 0));
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%WaitForBackgroundOptimization();
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// Invalidate current initial object map.
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Object.prototype[1] = 1.5;
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assertEquals(2, f1(arr, 1));
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// Not yet optimized since concurrent recompilation is blocked.
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assertUnoptimized(f1);
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// Sync with background thread to conclude optimization, which does bailout due
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// to map dependency, because the compiler read the NoElements protector before
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// the store to Object.prototype above.
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%FinalizeOptimization();
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assertUnoptimized(f1);
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assertEquals(2, f1(arr, 1));
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// Clear type info for stress runs.
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%ClearFunctionFeedback(f1);
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