5504068f49
This reverts commit ad1fcd4343.
Reason for revert: Breaks waterfall.
Original change's description:
> [cleanup] Remove the now-unused deopt_count from feedback vector.
>
> Bug: v8:9183
> Change-Id: Iceeccc8ab1e4e77b428e7e2feec39bff3317f241
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1617675
> Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
> Reviewed-by: Michael Starzinger <mstarzinger@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#61665}
TBR=mstarzinger@chromium.org,jarin@chromium.org
Change-Id: Iea0e6a329f55a3a941f0b976925b2abdf7eece38
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:9183
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1619867
Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
Commit-Queue: Jaroslav Sevcik <jarin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61666}
33 lines
737 B
JavaScript
33 lines
737 B
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 --opt --no-always-opt
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function foo(i, deopt = false) {
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if (i == 0) {
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if (deopt) {
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// Trigger a lazy deopt.
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%DeoptimizeNow();
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}
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} else {
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foo(i - 1, deopt);
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}
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}
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%PrepareFunctionForOptimization(foo);
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%PrepareFunctionForOptimization(foo);
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assertEquals(0, %GetDeoptCount(foo));
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foo(10);
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foo(10);
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%OptimizeFunctionOnNextCall(foo);
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foo(10);
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assertOptimized(foo);
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assertEquals(0, %GetDeoptCount(foo));
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foo(10, true);
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assertUnoptimized(foo);
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assertEquals(1, %GetDeoptCount(foo));
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