d9a0b7b11e
This reverts commit 30ca51ec48.
Reason for revert: TSAN failures https://ci.chromium.org/p/v8/builders/ci/V8%20Linux64%20TSAN/34104
Original change's description:
> [super] Optimize super property access in JSNativeContextSpecialization
>
> This is a reland of https://chromium-review.googlesource.com/c/v8/v8/+/2487122
>
> Generalize the existing property lookup machinery
> (JSNCS::ReduceNamedAccess) to handle the case where the
> lookup_start_object and the receiver are different objects.
>
> Design doc: https://docs.google.com/document/d/1b_wgtExmJDLb8206jpJol-g4vJAxPs1XjEx95hwRboI/edit#heading=h.xqthbgih7l2l
>
> Bug: v8:9237
> Change-Id: Ia8e79b00f7720f4e3e90801e49a0106e03b4767d
> Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2523197
> Commit-Queue: Marja Hölttä <marja@chromium.org>
> Reviewed-by: Georg Neis <neis@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#71052}
TBR=marja@chromium.org,neis@chromium.org
Change-Id: I2b10963a9a99f7b482f1014472a6a281fcf9b8c1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: v8:9237
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2527184
Reviewed-by: Shu-yu Guo <syg@chromium.org>
Commit-Queue: Shu-yu Guo <syg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71058}
22 lines
786 B
JavaScript
22 lines
786 B
JavaScript
// Copyright 2020 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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// Add --allow-natives-syntax --runtime-call-stats to your test file in order to
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// use this function. You can suppress the extra printout by calling
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// %GetAndResetRuntimeCallStats() at the end of the test.
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function getRuntimeFunctionCallCount(function_name) {
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const stats = %GetAndResetRuntimeCallStats();
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const lines = stats.split("\n");
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for (let i = 3; i < lines.length - 3; ++i) {
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const line = lines[i];
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const m = line.match(/(?<name>\S+)\s+\S+\s+\S+\s+(?<count>\S+)/);
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if (function_name == m.groups.name) {
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return m.groups.count;
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}
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}
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return 0;
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}
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