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Mattias Engdegård ea29908c18 Avoid traversing dead if branches in bytecode optimiser 
There is no point in traversing conditional branches that are
statically known never to be executed.  This saves some optimisation
effort, but more importantly prevents variable assignments and
references in those branches from blocking effective constant
propagation.

Also attempt to traverse as much as possible in an unconditional
context, which enables constant-propagation through (linear)
assignments.

* lisp/emacs-lisp/byte-opt.el (byte-optimize-form):
Rewrite the (tail) recursion into an explicit loop.  Normalise a
return value of (quote nil) to nil, for easier subsequent
optimisations.
* lisp/emacs-lisp/byte-opt.el (byte-optimize-form-code-walker): Don't
traverse dead `if` branches.  Use unconditional traversion context
when possible.
2021-02-12 20:52:05 +01:00
..
advice.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
autoload.el * lisp/emacs-lisp/autoload.el: Improve last change 2021-01-05 17:57:15 -05:00
avl-tree.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
backquote.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
backtrace.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
benchmark.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
bindat.el Use lexical-binding in all of lisp/emacs-lisp 2021-01-28 14:42:21 -05:00
byte-opt.el Avoid traversing dead if branches in bytecode optimiser 2021-02-12 20:52:05 +01:00
byte-run.el Fix missing file&line info in "Unknown defun property" warnings 2021-01-23 16:04:36 -05:00
bytecomp.el * lisp/emacs-lisp/macroexp.el: Break cycle with bytecomp/byte-opt 2021-02-09 12:02:25 -05:00
cconv.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
chart.el Prefer defvar-local in emacs-lisp/*.el 2021-01-31 14:55:53 +01:00
check-declare.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
checkdoc.el * lisp/emacs-lisp/checkdoc.el: Doc fix; don't mention built-ins. 2021-02-05 02:52:52 +01:00
cl-extra.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
cl-generic.el * lisp/emacs-lisp/cl-generic.el (cl--generic-lambda): Fix last change 2021-01-08 18:28:47 -05:00
cl-indent.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
cl-lib.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
cl-macs.el * lisp/emacs-lisp/cl-macs.el (cl-flet): Fix edebug spec 2021-02-12 11:37:49 -05:00
cl-preloaded.el Fix copyright years by hand 2021-01-01 00:33:28 -08:00
cl-print.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
cl-seq.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
copyright.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
crm.el Use lexical-binding in all of lisp/emacs-lisp 2021-01-28 14:42:21 -05:00
cursor-sensor.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
debug.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
derived.el Use lexical-binding in all of lisp/emacs-lisp 2021-01-28 14:42:21 -05:00
disass.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
easy-mmode.el Allow a :variable keyword in define-globalized-minor-mode 2021-02-04 15:22:40 +01:00
easymenu.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
edebug.el * lisp/emacs-lisp/edebug.el (edebug--handle-&-spec-op) <&lookup>: New method 2021-02-12 12:17:40 -05:00
eieio-base.el * lisp/emacs-lisp/eieio-base.el: Silence warnings in last change 2021-01-11 16:44:39 -05:00
eieio-compat.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
eieio-core.el Fix obsolete variable warnings about class names 2021-01-06 10:51:28 +01:00
eieio-custom.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
eieio-datadebug.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
eieio-opt.el Use lexical-binding in all of lisp/emacs-lisp 2021-01-28 14:42:21 -05:00
eieio-speedbar.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
eieio.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
eldoc.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
elint.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
elp.el Remove some unnecessary references to Emacs 19 2021-02-04 05:28:00 +01:00
ert-x.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
ert.el * lisp/emacs-lisp/pcase.el: Add support for not to pred 2021-01-16 14:21:57 -05:00
ewoc.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
faceup.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
find-func.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
float-sup.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
generator.el Avoid a compilation warning in iter-do 2021-02-06 11:31:18 +01:00
generic.el Prefer defvar-local in emacs-lisp/*.el 2021-01-31 14:55:53 +01:00
gv.el * lisp/emacs-lisp/gv.el (gv-place): Simplify 2021-02-11 19:06:30 -05:00
helper.el Use lexical-binding in all of lisp/emacs-lisp 2021-01-28 14:42:21 -05:00
hierarchy.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
inline.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
let-alist.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
lisp-mnt.el Preserve leading whitespace in `lm-commentary'. 2021-02-09 09:10:45 +01:00
lisp-mode.el Remove some dead, commented out code from lisp-mode.el 2021-02-09 17:03:55 +01:00
lisp.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
macroexp.el * lisp/emacs-lisp/macroexp.el (macroexp--fgrep): Break cycles 2021-02-10 16:06:24 -05:00
map-ynp.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
map.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
memory-report.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
nadvice.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
package-x.el * lisp/gnus/gnus-art.el: Fix misuse of standard-value. 2021-02-02 14:39:28 -05:00
package.el Move the ‘declare’ form before the interactive spec in 10 functions. 2021-01-20 21:19:23 +02:00
pcase.el * lisp/emacs-lisp/edebug.el (edebug--handle-&-spec-op) <&lookup>: New method 2021-02-12 12:17:40 -05:00
pp.el Move all usages of values' to values--store-value' 2021-02-09 09:04:47 +01:00
radix-tree.el * lisp/emacs-lisp/pcase.el: Add support for not to pred 2021-01-16 14:21:57 -05:00
re-builder.el Prefer defvar-local in emacs-lisp/*.el 2021-01-31 14:55:53 +01:00
regexp-opt.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
regi.el Use lexical-binding in all of lisp/emacs-lisp 2021-01-28 14:42:21 -05:00
ring.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
rmc.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
rx.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
seq.el * lisp/emacs-lisp/seq.el (seq-concatenate): Unautoload (merge fix). 2021-01-15 09:38:20 +00:00
shadow.el Use lexical-binding in all of lisp/emacs-lisp 2021-01-28 14:42:21 -05:00
shortdoc.el Minor shortdoc link improvements 2021-01-10 13:45:44 +01:00
smie.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
subr-x.el * lisp/emacs-lisp/subr-x.el (named-let): New macro 2021-01-20 14:13:15 -05:00
syntax.el Prefer defvar-local in emacs-lisp/*.el 2021-01-31 14:55:53 +01:00
tabulated-list.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
tcover-ses.el ; Minor license statement fixes 2021-02-08 09:10:57 +01:00
testcover.el Fix previous change in testcover.el 2021-02-06 15:04:52 +01:00
text-property-search.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
thunk.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
timer-list.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
timer.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
tq.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
trace.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00
unsafep.el Use lexical-binding in all of lisp/emacs-lisp 2021-01-28 14:42:21 -05:00
warnings.el Update copyright year to 2021 2021-01-01 01:13:56 -08:00