(cond
((lookup (lexical-ref-gensym x))
=> (lambda (op)
- (let ((y (or (operand-residual-value op)
- (visit-operand op counter 'value 10 10)
- (operand-source op))))
- (cond
- ((and (lexical-ref? y)
- (= (lexical-refcount (lexical-ref-gensym x)) 1))
- ;; X is a simple alias for Y. Recurse, regardless of
- ;; the number of aliases we were expecting.
- (find-definition y n-aliases))
- ((= (lexical-refcount (lexical-ref-gensym x)) n-aliases)
- ;; We found a definition that is aliased the right
- ;; number of times. We still recurse in case it is a
- ;; lexical.
- (values (find-definition y 1)
- op))
- (else
- ;; We can't account for our aliases.
- (values #f #f))))))
+ (if (var-set? (operand-var op))
+ (values #f #f)
+ (let ((y (or (operand-residual-value op)
+ (visit-operand op counter 'value 10 10)
+ (operand-source op))))
+ (cond
+ ((and (lexical-ref? y)
+ (= (lexical-refcount (lexical-ref-gensym x)) 1))
+ ;; X is a simple alias for Y. Recurse, regardless of
+ ;; the number of aliases we were expecting.
+ (find-definition y n-aliases))
+ ((= (lexical-refcount (lexical-ref-gensym x)) n-aliases)
+ ;; We found a definition that is aliased the right
+ ;; number of times. We still recurse in case it is a
+ ;; lexical.
+ (values (find-definition y 1)
+ op))
+ (else
+ ;; We can't account for our aliases.
+ (values #f #f)))))))
(else
;; A formal parameter. Can't say anything about that.
(values #f #f))))
(make-primcall src name args))))))
(($ <primcall> src 'thunk? (proc))
- (match (for-value proc)
- (($ <lambda> _ _ ($ <lambda-case> _ req))
- (for-tail (make-const src (null? req))))
- (proc
- (case ctx
- ((effect) (make-void src))
- (else (make-primcall src 'thunk? (list proc)))))))
+ (case ctx
+ ((effect)
+ (for-tail (make-seq src proc (make-void src))))
+ (else
+ (match (for-value proc)
+ (($ <lambda> _ _ ($ <lambda-case> _ req))
+ (for-tail (make-const src (null? req))))
+ (proc
+ (match (find-definition proc 2)
+ (($ <lambda> _ _ ($ <lambda-case> _ req))
+ (for-tail (make-const src (null? req))))
+ (_
+ (make-primcall src 'thunk? (list proc)))))))))
- (($ <primcall> src (? accessor-primitive? name) args)
+ (($ <primcall> src name args)
(match (cons name (map for-value args))
;; FIXME: these for-tail recursions could take place outside
;; an effort counter.
(for-tail (make-seq src k (make-const #f #f))))
(else
(make-primcall src name (list k (make-const #f elts))))))))
- ((name . args)
- (fold-constants src name args ctx))))
-
- (($ <primcall> src (? equality-primitive? name) (a b))
- (let ((val-a (for-value a))
- (val-b (for-value b)))
- (log 'equality-primitive name val-a val-b)
- (cond ((and (lexical-ref? val-a) (lexical-ref? val-b)
- (eq? (lexical-ref-gensym val-a)
- (lexical-ref-gensym val-b)))
- (for-tail (make-const #f #t)))
- (else
- (fold-constants src name (list val-a val-b) ctx)))))
-
- (($ <primcall> src (? effect-free-primitive? name) args)
- (fold-constants src name (map for-value args) ctx))
+ (((? equality-primitive?)
+ ($ <lexical-ref> _ _ sym) ($ <lexical-ref> _ _ sym))
+ (for-tail (make-const #f #t)))
- (($ <primcall> src name args)
- (make-primcall src name (map for-value args)))
+ (((? effect-free-primitive?) . args)
+ (fold-constants src name args ctx))
+
+ ((name . args)
+ (make-primcall src name args))))
(($ <call> src orig-proc orig-args)
;; todo: augment the global env with specialized functions
;; todo: handle the more complex cases
(let* ((nargs (length orig-args))
(nreq (length req))
- (nopt (if opt (length opt) 0))
+ (opt (or opt '()))
+ (rest (if rest (list rest) '()))
+ (nopt (length opt))
(key (source-expression proc)))
(define (inlined-call)
- (make-let src
- (append req
- (or opt '())
- (if rest (list rest) '()))
- gensyms
- (if (> nargs (+ nreq nopt))
- (append (list-head orig-args (+ nreq nopt))
- (list
- (make-primcall
- #f 'list
- (drop orig-args (+ nreq nopt)))))
- (append orig-args
- (drop inits (- nargs nreq))
- (if rest
- (list (make-const #f '()))
- '())))
- body))
+ (let ((req-vals (list-head orig-args nreq))
+ (opt-vals (let lp ((args (drop orig-args nreq))
+ (inits inits)
+ (out '()))
+ (match inits
+ (() (reverse out))
+ ((init . inits)
+ (match args
+ (()
+ (lp '() inits (cons init out)))
+ ((arg . args)
+ (lp args inits (cons arg out))))))))
+ (rest-vals (cond
+ ((> nargs (+ nreq nopt))
+ (list (make-primcall
+ #f 'list
+ (drop orig-args (+ nreq nopt)))))
+ (rest (list (make-const #f '())))
+ (else '()))))
+ (if (>= nargs (+ nreq nopt))
+ (make-let src
+ (append req opt rest)
+ gensyms
+ (append req-vals opt-vals rest-vals)
+ body)
+ ;; The required argument values are in the scope
+ ;; of the optional argument initializers.
+ (make-let src
+ (append req rest)
+ (append (list-head gensyms nreq)
+ (last-pair gensyms))
+ (append req-vals rest-vals)
+ (make-let src
+ opt
+ (list-head (drop gensyms nreq) nopt)
+ opt-vals
+ body)))))
(cond
((or (< nargs nreq) (and (not rest) (> nargs (+ nreq nopt))))
HCoop / bpt / guile.git / blobdiff