It's not that much about native code but reducing dynamic typing to the most "probable" static types.

A scalar in Perl is a container which can be internally an integer or a float, a string, a ref, an object ... etc.

Very similar in JS.

Each time you have an operation on two dynamic data types, the VM needs to find out how to combine the cases for the two types.

But if in the dynamic process you found out that the variables involved "always" (or mostly) have the same type, you can JIT compile to optimized code.

In other words: The JIT compiler can treat the code as if the variables where statically typed.

see https://hacks.mozilla.org/2017/02/a-crash-course-in-just-in-time-jit-compilers/ for a nice explanation.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery FootballPerl is like chess, only without the dice

In reply to Re^9: Run Perl 5 in the Browser! by LanX
in thread Run Perl 5 in the Browser! by haukex

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.