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From: Thomas 'PointedEars' Lahn <PointedEars@web.de>
Newsgroups: comp.lang.javascript
Subject: Re: Loop optimisation.
Date: Wed, 14 Apr 2021 17:31:36 +0200
Organization: PointedEars Software (PES)
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Michael Haufe (TNO) wrote:

> On Tuesday, April 13, 2021 at 7:20:42 PM UTC-5, Thomas 'PointedEars' Lahn
> wrote:
>> Michael Haufe (TNO) wrote:
>> 
>> > Modern JavaScript engines use JIT compilation.
>> AFAIK, they always did. What is new with “modern JavaScript engines”, IOW
>> Google V8 (JavaScript), is only that the source code is compiled to
>> native machine code instead of bytecode for a virtual machine.
> 
> Afraid not. They were all interpreters
> 
> - Firefox 3.1 was the first browser to introduce a JIT in version 3.1
> called TraceMonkey [1] -

No, certainly not.  The wording “a new kind of Just-In-Time (JIT) compiler” 
does not imply that previous script engines interpreted source code.

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PointedEars
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