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| author | Mattias Engdegård <mattiase@acm.org> | 2022-01-02 11:35:16 +0100 |
|---|---|---|
| committer | Mattias Engdegård <mattiase@acm.org> | 2022-01-24 11:41:46 +0100 |
| commit | 721357b86856505324b5f32584d5eae0ba9ab4ac (patch) | |
| tree | 922da8bb1fae1ffbf1c3998febc05bfe4a381845 /lisp/emacs-lisp/bytecomp.el | |
| parent | 4ff1fb8eb475a540c094878db1811797e2ca2368 (diff) | |
| download | emacs-721357b86856505324b5f32584d5eae0ba9ab4ac.tar.gz emacs-721357b86856505324b5f32584d5eae0ba9ab4ac.tar.bz2 emacs-721357b86856505324b5f32584d5eae0ba9ab4ac.zip | |
Remove the unused unbind-all bytecode
It was implemented but never generated, originally intended for
TCO in the pre-lexbind era (which was semantically dubious anyway).
Removing it speeds up the interpreter because there is no longer any
need for the outermost `count` variable unless checking is enabled.
* lisp/emacs-lisp/bytecomp.el:
* lisp/emacs-lisp/comp.el (comp-limplify-lap-inst):
* src/bytecode.c (BYTE_CODES, exec_byte_code):
Remove definition and implementation of unbind-all, freeing up the opcode
for other purposes.
Diffstat (limited to 'lisp/emacs-lisp/bytecomp.el')
| -rw-r--r-- | lisp/emacs-lisp/bytecomp.el | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/lisp/emacs-lisp/bytecomp.el b/lisp/emacs-lisp/bytecomp.el index a34ba37c04d..2f4bf663438 100644 --- a/lisp/emacs-lisp/bytecomp.el +++ b/lisp/emacs-lisp/bytecomp.el @@ -796,11 +796,7 @@ the unwind-action") (byte-defop 144 0 byte-temp-output-buffer-setup-OBSOLETE) (byte-defop 145 -1 byte-temp-output-buffer-show-OBSOLETE) -;; these ops are new to v19 - -;; To unbind back to the beginning of this frame. -;; Not used yet, but will be needed for tail-recursion elimination. -(byte-defop 146 0 byte-unbind-all) +;; unused: 146 ;; these ops are new to v19 (byte-defop 147 -2 byte-set-marker) |