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Mattias Engdegård authored
Turn (+ a b c) into (+ (+ a b) c), and do the same for - and *. The 2-arg operations have their own bytecode which results in a 1.5× speed-up. Furthermore, the transform enables other optimisations; for example, (+ a 1 b) -> (+ (1+ a) b). * lisp/emacs-lisp/byte-opt.el (byte-optimize-plus, byte-optimize-minus) (byte-optimize-multiply): Transform (OP a b c) into (OP (OP a b) c).
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