7c1ed0b8f8
This is a reland of 9284ad5731, after
adding a missing speculation mode check in ReduceCallApiFunction.
Original change's description:
> [turbofan] Avoid raw InferReceiverMaps in JSCallReducer
>
> Instead provide an abstraction that makes it hard to forget
> dealing with unreliable maps.
>
> This also fixes a deopt loop in Function.prototype.bind and
> one in Array.prototype.reduce.
>
> Bug: v8:9137
> Change-Id: If6a51182c8693a62e9fb6d302cec19b4d48e25cb
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1578501
> Commit-Queue: Georg Neis <neis@chromium.org>
> Reviewed-by: Jaroslav Sevcik <jarin@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#61106}
Tbr: jarin@chromium.org
Bug: v8:9137, v8:9197
Change-Id: I0db68d267055969553c0c1b85fad7b909075c062
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1589976
Commit-Queue: Georg Neis <neis@chromium.org>
Reviewed-by: Georg Neis <neis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61140}
29 lines
654 B
JavaScript
29 lines
654 B
JavaScript
// Copyright 2019 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
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// Flags: --no-flush-bytecode --no-stress-flush-bytecode
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function changeMap(obj) {
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obj.blub = 42;
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}
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function reducer(acc, val, i, obj) {
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return changeMap(obj);
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}
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function foo(obj) {
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return obj.reduce(reducer);
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}
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%NeverOptimizeFunction(reducer);
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%PrepareFunctionForOptimization(foo);
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foo([0, 1, 2]);
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foo([0, 1, 2]);
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%OptimizeFunctionOnNextCall(foo);
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foo([0, 1, 2]);
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%OptimizeFunctionOnNextCall(foo);
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foo([0, 1, 2]);
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assertOptimized(foo);
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