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Contification uses 'cons primcall

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* module/language/cps/contification.scm (apply-contification): Reify
'cons instead of using the lower-level scm-set! etc.
This commit is contained in:
Andy Wingo 2023-06-22 12:21:10 +02:00
parent 26b43f35c5
commit a80a5ade78
1 changed files with 4 additions and 13 deletions
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17
module/language/cps/contification.scm
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@ -1,6 +1,6 @@
;;; Continuation-passing style (CPS) intermediate language (IL)
;; Copyright (C) 2013-2021 Free Software Foundation, Inc.
;; Copyright (C) 2013-2021, 2023 Free Software Foundation, Inc.
;;;; This library is free software; you can redistribute it and/or
;;;; modify it under the terms of the GNU Lesser General Public
@ -426,20 +426,11 @@ function set."
(build-term ($continue k src ($const '())))))
((v . vals)
(with-cps cps
(letv pair tail)
(letk kdone ($kargs () () ($continue k src ($values (pair)))))
(letk ktail
($kargs () ()
($continue kdone src
($primcall 'scm-set!/immediate '(pair . 1) (pair tail)))))
(letk khead
($kargs ('pair) (pair)
($continue ktail src
($primcall 'scm-set!/immediate '(pair . 0) (pair v)))))
(letv tail)
(letk ktail
($kargs ('tail) (tail)
($continue khead src
($primcall 'allocate-words/immediate '(pair . 2) ()))))
($continue k src
($primcall 'cons #f (v tail)))))
($ (build-list ktail src vals))))))
(cond
((and (not rest) (eqv? (length vals) nreq))