how does elisp compare to common lisp?
reddit / emacs

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plsstobanninmeffs · 2022-11-06 16:39

I heard that the gccemacs branch was merged a while ago so that elisp
is now natively compiled and i wanted to know if there are any
benchmarks on any speed improvements against common lisp (say on
sbcl).

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Vince_Vice · 2022-11-07 00:48

I have neither knowledge nor much experience in this regard.

Bur I wouldn't expect elisp to be anywhere near sbcl speed.

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No-Walk1841 · 2022-11-07 02:04

Emacs Lisp uses libgccjit for its native compilation. CL has an
implementation called Clasp, which uses LLVM-powered JIT compilation.
They are close in single-thread performance in my test, but both are
far (about 10x) slower than the fastest CL implementation (SBCL).

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krypt3c · 2022-11-07 02:22

Any idea where clojure ranks in?

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No-Walk1841 · 2022-11-07 05:14

Due to the excellent JIT compiler of JVM, Clojure performs at the same
level as unoptimized CL code running on SBCL, which is also much
faster than Emacs Lisp.