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$prompt is now its own kind of CPS term.

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* module/language/cps.scm ($prompt): Rework to be its own term kind.
  Now $continue always continues to a single continuation.  Adapt
  callers.
This commit is contained in:
Andy Wingo 2018-01-03 17:17:23 +01:00
parent 29fee39c2a
commit ee15ca1455
22 changed files with 198 additions and 195 deletions
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10
module/language/cps/rotate-loops.scm
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@ -118,11 +118,11 @@ corresponding var from REPLACEMENTS; otherwise return VAR."
(($ $callk k proc args)
($callk k (rename proc) ,(rename* args)))
(($ $primcall name param args)
($primcall name param ,(rename* args)))
(($ $prompt escape? tag handler)
($prompt escape? (rename tag) handler)))))
($primcall name param ,(rename* args))))))
(($ $branch kf kt src op param args)
($branch kf kt src op param ,(rename* args)))))
($branch kf kt src op param ,(rename* args)))
(($ $prompt k kh src escape? tag)
($prompt k kh src escape? (rename tag)))))
(define (attach-trampoline cps label src names vars args)
(with-cps cps
(letk ktramp-out ,(make-trampoline join-label src args))
@ -211,7 +211,7 @@ corresponding var from REPLACEMENTS; otherwise return VAR."
(trivial-intset (loop-successors scc succs))
(match (intmap-ref cps entry)
;; Can't rotate $prompt out of loop header.
(($ $kargs _ _ ($ $continue _ _ ($ $prompt))) #f)
(($ $kargs _ _ ($ $prompt)) #f)
(_ #t)))
;; Loop header is an exit, and there is only one
;; exit continuation. Loop header isn't a prompt,