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Keep vars in local let's during closure convert

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Justin Ethier 2018-11-12 18:28:49 -05:00
parent 78b12779af
commit cde576aaa3
1 changed files with 11 additions and 0 deletions
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11
scheme/cyclone/cps-optimizations.sld
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@ -1695,6 +1695,9 @@
(else
(loop (cdr lst) (+ i 1))))))
(define (let->vars exp)
(map car (cadr exp)))
(define (closure-convert exp globals . opts)
(let ((optimization-level 2))
(if (pair? opts)
@ -1751,6 +1754,14 @@
,@(map cc (cdr exp)))) ;; TODO: need to splice?
((set!? exp) `(set! ,(set!->var exp)
,(cc (set!->exp exp))))
((tagged-list? 'let exp) ;; Special case now with local var redux
`(let
,(cadr exp)
,@(convert
(caddr exp)
self-var
(filter (lambda (v) (not (member v (let->vars exp)))) free-var-lst)))
)
((lambda? exp) (error `(Unexpected lambda in closure-convert ,exp)))
((if? exp) `(if ,@(map cc (cdr exp))))
((cell? exp) `(cell ,(cc (cell->value exp))))