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Normalise setq during macro-expansion

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Early normalisation of setq during macroexpand-all allows later
stages, cconv, byte-opt and codegen, to be simplified and duplicated
checks to be eliminated.

* lisp/emacs-lisp/macroexp.el (macroexp--expand-all):
Normalise all setq forms to a sequence of (setq VAR EXPR).
Emit warnings if necessary.
* lisp/emacs-lisp/cconv.el (cconv-convert, cconv-analyze-form):
* lisp/emacs-lisp/byte-opt.el (byte-optimize-form-code-walker):
* lisp/emacs-lisp/bytecomp.el (byte-compile-setq):
Simplify.
* test/lisp/emacs-lisp/bytecomp-tests.el: Adapt and add tests.
* test/lisp/emacs-lisp/bytecomp-resources/warn-variable-setq-nonvariable.el;
* test/lisp/emacs-lisp/bytecomp-resources/warn-variable-setq-odd.el:
New files.
This commit is contained in:
Mattias Engdegård 2022-06-03 20:31:10 +02:00
parent 175bc8e5a5
commit 6825e5686a
7 changed files with 100 additions and 74 deletions
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3
test/lisp/emacs-lisp/bytecomp-resources/warn-variable-setq-nonvariable.el Normal file
View file

@ -0,0 +1,3 @@
;;; -*- lexical-binding: t -*-
(defun foo ()
(setq (a) nil))