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CPS2 renumber works with first-order CPS

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* module/language/cps2/renumber.scm (compute-renaming): Add support for
  $closure and $callk.
This commit is contained in:
Andy Wingo 2015-07-14 13:53:56 +02:00
parent dc27708f0b
commit a15a14203e
1 changed files with 12 additions and 0 deletions
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12
module/language/cps2/renumber.scm
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@ -128,6 +128,10 @@
(($ $kfun src meta self tail clause)
(rename-var self vars))
(_ vars))))
(define (maybe-visit-fun kfun labels vars)
(if (intmap-ref labels kfun (lambda (_) #f))
(values labels vars)
(visit-fun kfun labels vars)))
(define (visit-nested-funs k labels vars)
(match (intmap-ref conts k)
(($ $kargs names syms ($ $continue k src ($ $fun kfun)))
@ -135,6 +139,14 @@
(($ $kargs names syms ($ $continue k src ($ $rec names* syms*
(($ $fun kfun) ...))))
(fold2 visit-fun kfun labels vars))
(($ $kargs names syms ($ $continue k src ($ $closure kfun nfree)))
;; Closures with zero free vars get copy-propagated so it's
;; possible to already have visited them.
(maybe-visit-fun kfun labels vars))
(($ $kargs names syms ($ $continue k src ($ $callk kfun)))
;; Well-known functions never have a $closure created for them
;; and are only referenced by their $callk call sites.
(maybe-visit-fun kfun labels vars))
(_ (values labels vars))))
(define (visit-fun kfun labels vars)
(let* ((preds (compute-predecessors conts kfun))