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tc39
ecmascript_simd
JavaScript2013–2026
tc39 / ecmascript_simd · Archived

ecmascript_simd

SIMD numeric type for EcmaScript

14Distinct people
15Mentions
0Explicit recommenders
546GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

SIMD numeric type for EcmaScript

GitHub

Where it is used

No documented product use was verified in the last source check.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 11:23:53 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year15 dated mentions

Observed mentions: 2013-10-15 17:38:33 UTC to 2026-09-24 01:50:27 UTC.

012342013-01-01 00:00:00 UTC to 2014-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments20132014-01-01 00:00:00 UTC to 2015-01-01 00:00:00 UTC (exclusive): 4 mentions; 0 submissions, 4 comments2015-01-01 00:00:00 UTC to 2016-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments2016-01-01 00:00:00 UTC to 2017-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2017-01-01 00:00:00 UTC to 2018-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2018-01-01 00:00:00 UTC to 2019-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2019-01-01 00:00:00 UTC to 2020-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments20192020-01-01 00:00:00 UTC to 2021-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-01-01 00:00:00 UTC to 2026-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2026-01-01 00:00:00 UTC to 2027-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments. Incomplete calendar period.2026*

* An incomplete calendar period is marked with an outlined bar. Its count is not directly comparable with a full period.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20132013-01-01 00:00:00 UTC2014-01-01 00:00:00 UTC101
20142014-01-01 00:00:00 UTC2015-01-01 00:00:00 UTC404
20152015-01-01 00:00:00 UTC2016-01-01 00:00:00 UTC303
20162016-01-01 00:00:00 UTC2017-01-01 00:00:00 UTC101
20172017-01-01 00:00:00 UTC2018-01-01 00:00:00 UTC202
20182018-01-01 00:00:00 UTC2019-01-01 00:00:00 UTC000
20192019-01-01 00:00:00 UTC2020-01-01 00:00:00 UTC000
20202020-01-01 00:00:00 UTC2021-01-01 00:00:00 UTC000
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC101
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC000
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC000
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC000
20252025-01-01 00:00:00 UTC2026-01-01 00:00:00 UTC202
2026 (partial)2026-01-01 00:00:00 UTC2027-01-01 00:00:00 UTC101

What Hacker News says

3 sources
They list Intel's contribution extensively in the post. I'm not sure why you'd assume they are trying to deceive anyone. > Intel has been contributing to Chakra, the JavaScript engine for Microsoft Edge > Some examples of Intel’s direct contributions to Chakra’s JIT compiler include better instruction selection and scheduling. > [they] also helped us identify opportunities of missed redundant instruction elimination, and inline overhead reduction. > Intel engineers are collaborating with us closely to implement Single Instruction Multiple Data (SIMD) [1], a future ECMAScript proposal, in Chakra > Intel recently contributed an optimization to improve navigation (load) time for pages containing several inline elements, optimizations to reduce DOM parse times for text-area elements, and participated in investigations and root cause analysis
Read the rest
In Intel’s contributions in Microsoft Edge: SIMD and other performance enhancements
Good for lulz, but this is really uninformed, if not made up from whole cloth. The influence of Dart on ES6 and 7 apart from SIMD (John McCutchan shout-out, John did the Dart work and then worked on https://github.com/johnmccutchan/ecmascript_simd; I had some small helpful role to do with the project involving Mozilla and Intel, too) and the courage and validation -- not the idea, which pre-dates Dart -- of giving the for (let...) loop a binding per iteration in ES6 as in Dart, there has been no influence or help from Dart. Modules in ES6 have nothing to do with Dart, and the work started in 2010, well before Dart ("Dash") leaked. Classes too pre-date Dart, in some ways they go back to JS2/ES4 of the 1999-2003 era, and ES4 of the 2006-8 era. CoffeeScript owes a lot to Ruby and Python, of course, and I did design-champion fat arrow functio
Read the rest
ns into ES6, inspired in part by CoffeeScript. ES6's for-of loop is responding to the same gravity-well as CoffeeScript's for-of, but it differs in substantial aspects. And so on. Languages influence one another -- news at 11 -- but Dart did very little intentional uplift work for JS. SIMD is the big and very good exception to this norm. Better late than never, I say. Now is a good time to help get value objects including bignums into ES7. https://code.google.com/p/dart/issues/detail?id=1533
In “We have decided not to integrate the Dart VM into Chrome”
I think Dart is sort of like CoffeeScript in that it was an experiment and influenced a lot of JavaScript standards people. A lot of the features of CoffeeScript are being integrated into JS with ES6 and ES7. The same is actually happening to the unique features of Dart such as typing and SIMD and better modules. Typing is so cool: http://wiki.ecmascript.org/doku.php?id=harmony:typed_objects SIMD is amazing: https://github.com/johnmccutchan/ecmascript_simd So, thank you Dart for showing us the way! My only worry is that the innovators behind Dart are going to be stuck on the Dart project while JavaScript gains their features and even more momentum. I would suggest that they let Dart die and not be stuck with it for years after it has stopped being relevant -- that would be a waste of their talents as they did really see what the future
Read the rest
would be.
In “We have decided not to integrate the Dart VM into Chrome”

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