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lib: remove outdated optimizations #27380

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lib: remove outdated optimizations #27380

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3 changes: 0 additions & 3 deletions lib/internal/process/task_queues.js
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Expand Up @@ -92,9 +92,6 @@ function processTicksAndRejections() {

class TickObject {
constructor(callback, args, triggerAsyncId) {
// This must be set to null first to avoid function tracking
// on the hidden class, revisit in V8 versions after 6.2
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@joyeecheung joyeecheung Apr 24, 2019 •
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Are these related to https://bugs.chromium.org/p/v8/issues/detail?id=5456 ? @apapirovski
AFAIK constant field tracking is not yet shipped in V8 but the issue is closed so I assume the deopt storm issue has been alleviated by other patches in the upstream.

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Yes but last I tried this, it was still an issue. We should create a benchmark that actually tests this if we want to be certain. (i recently tried this with timers and still saw perf penalty.)

this.callback = null;
this.callback = callback;
this.args = args;

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3 changes: 0 additions & 3 deletions lib/timers.js
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Expand Up @@ -207,9 +207,6 @@ const Immediate = class Immediate {
constructor(callback, args) {
this._idleNext = null;
this._idlePrev = null;
// This must be set to null first to avoid function tracking
// on the hidden class, revisit in V8 versions after 6.2
this._onImmediate = null;
this._onImmediate = callback;
this._argv = args;
this._destroyed = false;
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