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Name	Size	Permission	Date
closure-conversion.scm	37.26 KB	-rw-r--r--	2022-02-10 20:40
compile-bytecode.scm	30.67 KB	-rw-r--r--	2022-02-10 20:40
contification.scm	23.49 KB	-rw-r--r--	2022-02-10 20:40
cse.scm	32.62 KB	-rw-r--r--	2022-02-10 20:40
dce.scm	18.02 KB	-rw-r--r--	2022-02-10 20:40
devirtualize-integers.scm	11.33 KB	-rw-r--r--	2022-02-10 20:40
dump.scm	11.58 KB	-rw-r--r--	2022-02-10 20:40
effects-analysis.scm	27.17 KB	-rw-r--r--	2022-02-10 20:40
elide-arity-checks.scm	4.41 KB	-rw-r--r--	2022-02-10 20:40
graphs.scm	13.85 KB	-rw-r--r--	2022-02-10 20:40
intmap.scm	28.35 KB	-rw-r--r--	2022-02-10 20:40
intset.scm	29.59 KB	-rw-r--r--	2022-02-10 20:40
licm.scm	14.7 KB	-rw-r--r--	2022-02-10 20:40
loop-instrumentation.scm	2.55 KB	-rw-r--r--	2022-02-10 20:40
optimize.scm	5.7 KB	-rw-r--r--	2022-02-10 20:40
peel-loops.scm	14.52 KB	-rw-r--r--	2022-02-10 20:40
prune-top-level-scopes.scm	2.07 KB	-rw-r--r--	2022-02-10 20:40
reify-primitives.scm	23.88 KB	-rw-r--r--	2022-02-10 20:40
renumber.scm	10.21 KB	-rw-r--r--	2022-02-10 20:40
return-types.scm	6.47 KB	-rw-r--r--	2022-02-10 20:40
rotate-loops.scm	10.44 KB	-rw-r--r--	2022-02-10 20:40
self-references.scm	3.06 KB	-rw-r--r--	2022-02-10 20:40
simplify.scm	10.52 KB	-rw-r--r--	2022-02-10 20:40
slot-allocation.scm	33.36 KB	-rw-r--r--	2022-02-10 20:40
spec.scm	1.83 KB	-rw-r--r--	2022-02-10 20:40
specialize-numbers.scm	43.45 KB	-rw-r--r--	2022-02-10 20:40
specialize-primcalls.scm	6.71 KB	-rw-r--r--	2022-02-10 20:40
split-rec.scm	7.56 KB	-rw-r--r--	2022-02-10 20:40
switch.scm	18.01 KB	-rw-r--r--	2022-02-10 20:40
type-checks.scm	3.07 KB	-rw-r--r--	2022-02-10 20:40
type-fold.scm	28.47 KB	-rw-r--r--	2022-02-10 20:40
types.scm	80.65 KB	-rw-r--r--	2022-02-10 20:40
utils.scm	18.15 KB	-rw-r--r--	2022-02-10 20:40
verify.scm	12.45 KB	-rw-r--r--	2022-02-10 20:40
with-cps.scm	5.72 KB	-rw-r--r--	2022-02-10 20:40

Rename

;;; Continuation-passing style (CPS) intermediate language (IL)

;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
;;;; License as published by the Free Software Foundation; either
;;;; version 3 of the License, or (at your option) any later version.
;;;;
;;;; This library is distributed in the hope that it will be useful,
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;;;; Lesser General Public License for more details.
;;;;
;;;; You should have received a copy of the GNU Lesser General Public
;;;; License along with this library; if not, write to the Free Software
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

;;; Commentary:
;;;
;;; A simple pass to prune unneeded top-level scopes.
;;;
;;; Code:

(define-module (language cps prune-top-level-scopes)
  #:use-module (ice-9 match)
  #:use-module (language cps)
  #:use-module (language cps utils)
  #:use-module (language cps intmap)
  #:use-module (language cps intset)
  #:export (prune-top-level-scopes))

(define (compute-used-scopes conts)
  (persistent-intset
   (intmap-fold
    (lambda (label cont used-scopes)
      (match cont
        (($ $kargs _ _
            ($ $continue k src
               ($ $primcall 'cached-toplevel-box (scope name bound?))))
         (intset-add! used-scopes scope))
        (_
         used-scopes)))
    conts
    empty-intset)))

(define (prune-top-level-scopes conts)
  (let* ((used-scopes (compute-used-scopes conts)))
    (intmap-map
     (lambda (label cont)
       (match cont
         (($ $kargs names vars
             ($ $continue k src
                ($ $primcall 'cache-current-module! (scope-id) (module))))
          (if (intset-ref used-scopes scope-id)
              cont
              (build-cont ($kargs names vars
                                  ($continue k src ($values ()))))))
         (_
          cont)))
     conts)))