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authorStefan Monnier <monnier@iro.umontreal.ca>2014-10-22 09:38:47 -0400
committerStefan Monnier <monnier@iro.umontreal.ca>2014-10-22 09:38:47 -0400
commitbe603ee9b653b14f62bb1bbcc6bded35e76f3ee7 (patch)
treee1e6ec218a93b275bc5c2d8ca41fb0c46658c1b1 /lisp/emacs-lisp/bytecomp.el
parentbdc9a8b5acdffe0acd6360b1cade8ff732df3e76 (diff)
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* lisp/emacs-lisp/bytecomp.el (byte-compile-and-folded): Optimize case where
all args are copyable. (=, <, >, <=, >=): Re-enable the optimization. Fixes: debbugs:18767
Diffstat (limited to 'lisp/emacs-lisp/bytecomp.el')
-rw-r--r--lisp/emacs-lisp/bytecomp.el19
1 files changed, 10 insertions, 9 deletions
diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el
index 69c4e0f1628..6ab0efff86b 100644
--- a/lisp/emacs-lisp/bytecomp.el
+++ b/lisp/emacs-lisp/bytecomp.el
@@ -120,7 +120,7 @@
(require 'backquote)
(require 'macroexp)
(require 'cconv)
-(eval-when-compile (require 'cl-lib))
+(require 'cl-lib)
(or (fboundp 'defsubst)
;; This really ought to be loaded already!
@@ -3261,11 +3261,11 @@ If it is nil, then the handler is \"byte-compile-SYMBOL.\""
(byte-defop-compiler cons 2)
(byte-defop-compiler aref 2)
(byte-defop-compiler set 2)
-(byte-defop-compiler (= byte-eqlsign) 2) ;; -and bug#18767
-(byte-defop-compiler (< byte-lss) 2) ;; -and bug#18767
-(byte-defop-compiler (> byte-gtr) 2) ;; -and bug#18767
-(byte-defop-compiler (<= byte-leq) 2) ;; -and bug#18767
-(byte-defop-compiler (>= byte-geq) 2) ;; -and bug#18767
+(byte-defop-compiler (= byte-eqlsign) 2-and)
+(byte-defop-compiler (< byte-lss) 2-and)
+(byte-defop-compiler (> byte-gtr) 2-and)
+(byte-defop-compiler (<= byte-leq) 2-and)
+(byte-defop-compiler (>= byte-geq) 2-and)
(byte-defop-compiler get 2)
(byte-defop-compiler nth 2)
(byte-defop-compiler substring 2-3)
@@ -3332,13 +3332,14 @@ If it is nil, then the handler is \"byte-compile-SYMBOL.\""
(defun byte-compile-and-folded (form)
"Compile calls to functions like `<='.
These implicitly `and' together a bunch of two-arg bytecodes."
- ;; FIXME: bug#18767 means we can't do it this way!
(let ((l (length form)))
(cond
((< l 3) (byte-compile-form `(progn ,(nth 1 form) t)))
((= l 3) (byte-compile-two-args form))
- (t (byte-compile-form `(and (,(car form) ,(nth 1 form) ,(nth 2 form))
- (,(car form) ,@(nthcdr 2 form))))))))
+ ((cl-every #'macroexp-copyable-p (nthcdr 2 form))
+ (byte-compile-form `(and (,(car form) ,(nth 1 form) ,(nth 2 form))
+ (,(car form) ,@(nthcdr 2 form)))))
+ (t (byte-compile-normal-call form)))))
(defun byte-compile-three-args (form)
(if (not (= (length form) 4))