diff options
Diffstat (limited to 'lisp/emacs-lisp/byte-opt.el')
| -rw-r--r-- | lisp/emacs-lisp/byte-opt.el | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lisp/emacs-lisp/byte-opt.el b/lisp/emacs-lisp/byte-opt.el index 0a79bf9b797..39bb6224595 100644 --- a/lisp/emacs-lisp/byte-opt.el +++ b/lisp/emacs-lisp/byte-opt.el @@ -1049,6 +1049,14 @@ See Info node `(elisp) Integer Basics'." form ; No improvement. (cons 'concat (nreverse newargs))))) +(defun byte-optimize-string-greaterp (form) + ;; Rewrite in terms of `string-lessp' which has its own bytecode. + (pcase (cdr form) + (`(,a ,b) (let ((arg1 (make-symbol "arg1"))) + `(let ((,arg1 ,a)) + (string-lessp ,b ,arg1)))) + (_ form))) + (put 'identity 'byte-optimizer #'byte-optimize-identity) (put 'memq 'byte-optimizer #'byte-optimize-memq) (put 'memql 'byte-optimizer #'byte-optimize-member) @@ -1072,6 +1080,9 @@ See Info node `(elisp) Integer Basics'." (put 'string= 'byte-optimizer #'byte-optimize-binary-predicate) (put 'string-equal 'byte-optimizer #'byte-optimize-binary-predicate) +(put 'string-greaterp 'byte-optimizer #'byte-optimize-string-greaterp) +(put 'string> 'byte-optimizer #'byte-optimize-string-greaterp) + (put 'concat 'byte-optimizer #'byte-optimize-concat) ;; I'm not convinced that this is necessary. Doesn't the optimizer loop |