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FastVM
Web49
WebAssembly2023–2023
FastVM / Web49

Web49

Web49: WebAssembly Interpeter

2Distinct people
2Mentions
0Explicit recommenders
331GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Web49: WebAssembly Interpeter

GitHub

Where it is used

No documented product use has been verified yet.

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, 1:49:46 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 hour2 dated mentions

Observed mentions: 2023-01-09 14:02:45 UTC to 2023-01-09 16:46:49 UTC.

012023-01-09 14:00:00 UTC to 2023-01-09 15:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 commentsJan 9, 14:002023-01-09 15:00:00 UTC to 2023-01-09 16:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 commentsJan 9, 15:002023-01-09 16:00:00 UTC to 2023-01-09 17:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsJan 9, 16:00

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
Jan 9, 14:002023-01-09 14:00:00 UTC2023-01-09 15:00:00 UTC110
Jan 9, 15:002023-01-09 15:00:00 UTC2023-01-09 16:00:00 UTC000
Jan 9, 16:002023-01-09 16:00:00 UTC2023-01-09 17:00:00 UTC101

What Hacker News says

2 sources
> I developed a unique way to write interpreters based on threaded code jumps and basic block versioning when I made MiniVM (https://github.com/FastVM/minivm). It was both larger and more dynamic than WebAssembly. I'd be very interested to read more about this. It looks like you are using "one big function" with computed goto (https://github.com/FastVM/Web49/blob/main/src/interp/interp....). My experience working on this problem led me to the same conclusion as Mike Pall, which is that compilers do not do well with this pattern (particularly when it comes to register allocation): http://lua-users.org/lists/lua-l/2011-02/msg00742.html I'm curious how you worked around the problem of poor register allocation in the compiler. I've come to the conclusion that tail calls are the best solution to this problem: https://blog.reverberate.org/20
Read the rest
In Show HN: I wrote a WebAssembly Interpreter and Toolkit in C

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