ikarus/src/ikarus.compiler.ss

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(library (ikarus compiler)
(export compile-core-expr-to-port
assembler-output
current-primitive-locations eval-core)
(import
(ikarus system $fx)
(ikarus system $pairs)
(only (ikarus system $codes) $code->closure)
(only (ikarus system $records) $record-ref $record/rtd?)
(except (ikarus)
compile-core-expr-to-port assembler-output
current-primitive-locations eval-core)
(ikarus intel-assembler)
;(ikarus fasl write)
)
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(define-syntax record-case
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(lambda (x)
(define (enumerate fld* i)
(syntax-case fld* ()
[() #'()]
[(x . x*)
(with-syntax ([i i] [i* (enumerate #'x* (fx+ i 1))])
#'(i . i*))]))
(define (generate-body ctxt cls*)
(syntax-case cls* (else)
[() (with-syntax ([x x]) #'(error #f "unmatched ~s in ~s" v 'x))]
[([else b b* ...]) #'(begin b b* ...)]
[([(rec-name rec-field* ...) b b* ...] . rest) (identifier? #'rec-name)
(with-syntax ([altern (generate-body ctxt #'rest)]
[(id* ...) (enumerate #'(rec-field* ...) 0)]
[rtd #'(type-descriptor rec-name)])
#'(if ($record/rtd? v rtd)
(let ([rec-field* ($record-ref v id*)] ...)
b b* ...)
altern))]))
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(syntax-case x ()
[(_ expr cls* ...)
(with-syntax ([body (generate-body #'_ #'(cls* ...))])
#'(let ([v expr]) body))])))
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(include "set-operations.ss")
(define-record constant (value))
(define-record code-loc (label))
(define-record foreign-label (label))
(define-record var
(name assigned referenced
reg-conf frm-conf var-conf reg-move frm-move var-move
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loc index))
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(define-record cp-var (idx))
(define-record frame-var (idx))
(define-record new-frame (base-idx size body))
(define-record save-cp (loc))
(define-record eval-cp (check body))
(define-record return (value))
(define-record call-cp
(call-convention label save-cp? rp-convention base-idx arg-count live-mask))
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(define-record tailcall-cp (convention label arg-count))
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(define-record primcall (op arg*))
(define-record primref (name))
(define-record conditional (test conseq altern))
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(define-record interrupt-call (test handler))
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(define-record bind (lhs* rhs* body))
(define-record recbind (lhs* rhs* body))
(define-record rec*bind (lhs* rhs* body))
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(define-record fix (lhs* rhs* body))
(define-record seq (e0 e1))
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(define-record case-info (label args proper))
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(define-record clambda-case (info body))
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(define-record clambda (label cases free))
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(define-record closure (code free*))
(define-record funcall (op rand*))
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(define-record jmpcall (label op rand*))
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(define-record forcall (op rand*))
(define-record codes (list body))
(define-record assign (lhs rhs))
(define-record mvcall (producer consumer))
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(define-record shortcut (body handler))
(define-record fvar (idx))
(define-record object (val))
(define-record locals (vars body))
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(define-record nframe (vars live body))
(define-record nfv (conf loc var-conf frm-conf nfv-conf))
(define-record ntcall (target value args mask size))
(define-record asm-instr (op dst src))
(define-record disp (s0 s1))
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(define mkfvar
(let ([cache '()])
(lambda (i)
(cond
[(fixnum? i)
(cond
[(assv i cache) => cdr]
[else
(let ([fv (make-fvar i)])
(set! cache (cons (cons i fv) cache))
fv)])]
[else (error 'mkfvar "~s is not a fixnum" i)]))))
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(define (unique-var x)
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(make-var (gensym x) #f #f #f #f #f #f #f #f #f #f))
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(define (recordize x)
(define *cookie* (gensym))
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(define (gen-fml* fml*)
(cond
[(pair? fml*)
(let ([v (unique-var (car fml*))])
(putprop (car fml*) *cookie* v)
(cons v (gen-fml* (cdr fml*))))]
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[(symbol? fml*)
(let ([v (unique-var fml*)])
(putprop fml* *cookie* v)
v)]
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[else '()]))
(define (ungen-fml* fml*)
(cond
[(pair? fml*)
(remprop (car fml*) *cookie*)
(ungen-fml* (cdr fml*))]
[(symbol? fml*)
(remprop fml* *cookie*)]))
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(define (properize fml*)
(cond
[(pair? fml*)
(cons (car fml*) (properize (cdr fml*)))]
[(null? fml*) '()]
[else (list fml*)]))
(define (quoted-sym x)
(if (and (list? x)
(fx= (length x) 2)
(eq? 'quote (car x))
(symbol? (cadr x)))
(cadr x)
(error 'quoted-sym "not a quoted symbol ~s" x)))
(define (quoted-string x)
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(if (and (list? x)
(fx= (length x) 2)
(eq? 'quote (car x))
(string? (cadr x)))
(cadr x)
(error 'quoted-string "not a quoted string ~s" x)))
(define (Var x)
(or (getprop x *cookie*)
(error 'recordize "unbound ~s" x)))
(define (E x)
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(cond
[(pair? x)
(case (car x)
[(quote) (make-constant (cadr x))]
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[(if)
(make-conditional
(E (cadr x))
(E (caddr x))
(E (cadddr x)))]
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[(set!)
(let ([lhs (cadr x)] [rhs (caddr x)])
(make-assign (Var lhs) (E rhs)))]
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[(begin)
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(let f ([a (E (cadr x))] [d (cddr x)])
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(cond
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[(null? d) a]
[else
(f (make-seq a (E (car d))) (cdr d))]))]
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[(letrec)
(let ([bind* (cadr x)] [body (caddr x)])
(let ([lhs* (map car bind*)]
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[rhs* (map cadr bind*)])
(let ([nlhs* (gen-fml* lhs*)])
(let ([expr (make-recbind nlhs* (map E rhs*) (E body))])
(ungen-fml* lhs*)
expr))))]
[(letrec*)
(let ([bind* (cadr x)] [body (caddr x)])
(let ([lhs* (map car bind*)]
[rhs* (map cadr bind*)])
(let ([nlhs* (gen-fml* lhs*)])
(let ([expr (make-rec*bind nlhs* (map E rhs*) (E body))])
(ungen-fml* lhs*)
expr))))]
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[(case-lambda)
(let ([cls*
(map
(lambda (cls)
(let ([fml* (car cls)] [body (cadr cls)])
(let ([nfml* (gen-fml* fml*)])
(let ([body (E body)])
(ungen-fml* fml*)
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(make-clambda-case
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(make-case-info
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(gensym)
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(properize nfml*)
(list? fml*))
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body)))))
(cdr x))])
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(make-clambda (gensym) cls* #f))]
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[(foreign-call)
(let ([name (quoted-string (cadr x))] [arg* (cddr x)])
(make-forcall name (map E arg*)))]
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[(|#primitive|)
(let ([var (cadr x)])
(make-primref var))]
[(top-level-value)
(let ([var (quoted-sym (cadr x))])
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(make-funcall
(make-primref 'top-level-value)
(list (make-constant var))))]
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[(set-top-level-value!)
(make-funcall (make-primref 'set-top-level-value!)
(map E (cdr x)))]
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[(void)
(make-constant (void))]
[else
(make-funcall (E (car x)) (map E (cdr x)))])]
[(symbol? x) (Var x)]
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[else (error 'recordize "invalid expression ~s" x)]))
(E x))
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(define (unparse x)
(define (E-args proper x)
(if proper
(map E x)
(let f ([a (car x)] [d (cdr x)])
(cond
[(null? d) (E a)]
[else (cons (E a) (f (car d) (cdr d)))]))))
(define (E x)
(record-case x
[(constant c) `(quote ,c)]
[(code-loc x) `(code-loc ,x)]
[(var x) (string->symbol (format "v:~a" x))]
[(primref x) x]
[(conditional test conseq altern)
`(if ,(E test) ,(E conseq) ,(E altern))]
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[(interrupt-call e0 e1)
`(interrupt-call ,(E e0) ,(E e1))]
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[(primcall op arg*) `(,op . ,(map E arg*))]
[(bind lhs* rhs* body)
`(let ,(map (lambda (lhs rhs) (list (E lhs) (E rhs))) lhs* rhs*)
,(E body))]
[(recbind lhs* rhs* body)
`(letrec ,(map (lambda (lhs rhs) (list (E lhs) (E rhs))) lhs* rhs*)
,(E body))]
[(rec*bind lhs* rhs* body)
`(letrec* ,(map (lambda (lhs rhs) (list (E lhs) (E rhs))) lhs* rhs*)
,(E body))]
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[(fix lhs* rhs* body)
`(fix ,(map (lambda (lhs rhs) (list (E lhs) (E rhs))) lhs* rhs*)
,(E body))]
[(seq e0 e1)
(let ()
(define (f x ac)
(record-case x
[(seq e0 e1) (f e0 (f e1 ac))]
[else (cons (E x) ac)]))
(cons 'begin (f e0 (f e1 '()))))]
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[(clambda-case info body)
`(,(E-args (case-info-proper info)
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(case-info-args info))
,(E body))]
[(clambda g cls* free)
`(,g (case-lambda . ,(map E cls*)))]
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[(clambda label clauses free)
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`(code ,label . ,(map E clauses))]
[(closure code free*)
`(closure ,(E code) ,(map E free*))]
[(codes list body)
`(codes ,(map E list)
,(E body))]
[(funcall rator rand*) `(funcall ,(E rator) . ,(map E rand*))]
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[(jmpcall label rator rand*)
`(jmpcall ,label ,(E rator) . ,(map E rand*))]
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[(forcall rator rand*) `(foreign-call ,rator . ,(map E rand*))]
[(assign lhs rhs) `(set! ,(E lhs) ,(E rhs))]
[(return x) `(return ,(E x))]
[(new-frame base-idx size body)
`(new-frame [base: ,base-idx]
[size: ,size]
,(E body))]
[(frame-var idx)
(string->symbol (format "fv.~a" idx))]
[(cp-var idx)
(string->symbol (format "cp.~a" idx))]
[(save-cp expr)
`(save-cp ,(E expr))]
[(eval-cp check body)
`(eval-cp ,check ,(E body))]
[(call-cp call-convention label save-cp? rp-convention base-idx arg-count live-mask)
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`(call-cp [conv: ,call-convention]
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[label: ,label]
[rpconv: ,(if (symbol? rp-convention)
rp-convention
(E rp-convention))]
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[base-idx: ,base-idx]
[arg-count: ,arg-count]
[live-mask: ,live-mask])]
[(tailcall-cp convention label arg-count)
`(tailcall-cp ,convention ,label ,arg-count)]
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[(foreign-label x) `(foreign-label ,x)]
[(mvcall prod cons) `(mvcall ,(E prod) ,(E cons))]
[(fvar idx) (string->symbol (format "fv.~a" idx))]
[(nfv idx) 'nfv]
[(locals vars body) `(locals ,(map E vars) ,(E body))]
[(asm-instr op d s)
`(asm ,op ,(E d) ,(E s))]
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[(disp s0 s1)
`(disp ,(E s0) ,(E s1))]
[(nframe vars live body) `(nframe ;[vars: ,(map E vars)]
;[live: ,(map E live)]
,(E body))]
[(shortcut body handler)
`(shortcut ,(E body) ,(E handler))]
[(ntcall target valuw args mask size)
`(ntcall ,target ,size)]
[else
(if (symbol? x)
x
"#<unknown>")]))
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(E x))
(define open-mvcalls (make-parameter #t))
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(define (optimize-direct-calls x)
(define who 'optimize-direct-calls)
(define (make-conses ls)
(cond
[(null? ls) (make-constant '())]
[else
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(make-funcall (make-primref 'cons)
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(list (car ls) (make-conses (cdr ls))))]))
(define (properize lhs* rhs*)
(cond
[(null? lhs*) (error who "improper improper")]
[(null? (cdr lhs*))
(list (make-conses rhs*))]
[else (cons (car rhs*) (properize (cdr lhs*) (cdr rhs*)))]))
(define (inline-case cls rand*)
(record-case cls
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[(clambda-case info body)
(record-case info
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[(case-info label fml* proper)
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(if proper
(and (fx= (length fml*) (length rand*))
(make-bind fml* rand* body))
(and (fx<= (length fml*) (length rand*))
(make-bind fml* (properize fml* rand*) body)))])]))
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(define (try-inline cls* rand* default)
(cond
[(null? cls*) default]
[(inline-case (car cls*) rand*)]
[else (try-inline (cdr cls*) rand* default)]))
(define (inline rator rand*)
(define (valid-mv-consumer? x)
(record-case x
[(clambda L cases F)
(and (fx= (length cases) 1)
(record-case (car cases)
[(clambda-case info body)
(record-case info
[(case-info L args proper) proper])]))]
[else #f]))
(define (single-value-consumer? x)
(record-case x
[(clambda L cases F)
(and (fx= (length cases) 1)
(record-case (car cases)
[(clambda-case info body)
(record-case info
[(case-info L args proper)
(and proper (fx= (length args) 1))])]))]
[else #f]))
(define (valid-mv-producer? x)
(record-case x
[(funcall) #t]
[(conditional) #f]
[(bind lhs* rhs* body) (valid-mv-producer? body)]
[else #f] ;; FIXME BUG
; [else (error 'valid-mv-producer? "unhandles ~s"
; (unparse x))]
))
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(record-case rator
[(clambda g cls*)
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(try-inline cls* rand*
(make-funcall rator rand*))]
[(primref op)
(case op
;;; FIXME HERE
[(call-with-values)
(cond
[(and (open-mvcalls) (fx= (length rand*) 2))
(let ([producer (inline (car rand*) '())]
[consumer (cadr rand*)])
(cond
[(single-value-consumer? consumer)
(inline consumer (list producer))]
[(and (valid-mv-consumer? consumer)
(valid-mv-producer? producer))
(make-mvcall producer consumer)]
[else
(make-funcall rator rand*)]))]
[else
(make-funcall rator rand*)])]
[else
(make-funcall rator rand*)])]
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[else (make-funcall rator rand*)]))
(define (Expr x)
(record-case x
[(constant) x]
[(var) x]
[(primref) x]
[(bind lhs* rhs* body)
(make-bind lhs* (map Expr rhs*) (Expr body))]
[(recbind lhs* rhs* body)
(make-recbind lhs* (map Expr rhs*) (Expr body))]
[(rec*bind lhs* rhs* body)
(make-rec*bind lhs* (map Expr rhs*) (Expr body))]
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[(conditional test conseq altern)
(make-conditional
(Expr test)
(Expr conseq)
(Expr altern))]
[(seq e0 e1)
(make-seq (Expr e0) (Expr e1))]
[(clambda g cls*)
(make-clambda g
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(map (lambda (x)
(record-case x
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[(clambda-case info body)
(make-clambda-case info (Expr body))]))
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cls*)
#f)]
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[(funcall rator rand*)
(inline (Expr rator) (map Expr rand*))]
[(forcall rator rand*)
(make-forcall rator (map Expr rand*))]
[(assign lhs rhs)
(make-assign lhs (Expr rhs))]
[else (error who "invalid expression ~s" (unparse x))]))
(Expr x))
(define simple-primitives
;;; primitives that are side-effect-free
;;; FIXME: surely something must go here, no?
'())
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(define (optimize-letrec x)
(define who 'optimize-letrec)
(define (extend-hash lhs* h ref)
(for-each (lambda (lhs) (put-hash-table! h lhs #t)) lhs*)
(lambda (x)
(unless (get-hash-table h x #f)
(put-hash-table! h x #t)
(ref x))))
(define (E* x* ref comp)
(cond
[(null? x*) '()]
[else
(cons (E (car x*) ref comp)
(E* (cdr x*) ref comp))]))
(define (do-rhs*-old i lhs* rhs* ref comp vref vcomp)
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(cond
[(null? rhs*) '()]
[else
(let ([h (make-hash-table)])
(let ([ref
(lambda (x)
(unless (get-hash-table h x #f)
(put-hash-table! h x #t)
(ref x)
(when (memq x lhs*)
(vector-set! vref i #t))))]
[comp
(lambda ()
(vector-set! vcomp i #t)
(comp))])
(cons (E (car rhs*) ref comp)
(do-rhs* (fxadd1 i) lhs* (cdr rhs*) ref comp vref vcomp))))]))
(define (do-rhs* i lhs* rhs* ref comp vref vcomp)
(cond
[(null? rhs*) '()]
[else
(let ([h (make-hash-table)]
[rest (do-rhs* (fxadd1 i) lhs* (cdr rhs*) ref comp vref vcomp)])
(let ([ref
(lambda (x)
(unless (get-hash-table h x #f)
(put-hash-table! h x #t)
(ref x)
(when (memq x lhs*)
(vector-set! vref i #t))))]
[comp
(lambda ()
(vector-set! vcomp i #t)
(comp))])
(cons (E (car rhs*) ref comp) rest)))]))
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(define (partition-rhs* i lhs* rhs* vref vcomp)
(cond
[(null? lhs*) (values '() '() '() '() '() '())]
[else
(let-values
([(slhs* srhs* llhs* lrhs* clhs* crhs*)
(partition-rhs* (fxadd1 i) (cdr lhs*) (cdr rhs*) vref vcomp)]
[(lhs rhs) (values (car lhs*) (car rhs*))])
(cond
[(var-assigned lhs)
(values slhs* srhs* llhs* lrhs* (cons lhs clhs*) (cons rhs crhs*))]
[(clambda? rhs)
(values slhs* srhs* (cons lhs llhs*) (cons rhs lrhs*) clhs* crhs*)]
[(or (vector-ref vref i) (vector-ref vcomp i))
(values slhs* srhs* llhs* lrhs* (cons lhs clhs*) (cons rhs crhs*))]
[else
(values (cons lhs slhs*) (cons rhs srhs*) llhs* lrhs* clhs* crhs*)]
))]))
(define (do-recbind lhs* rhs* body ref comp letrec?)
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(let ([h (make-hash-table)]
[vref (make-vector (length lhs*) #f)]
[vcomp (make-vector (length lhs*) #f)])
(let* ([ref (extend-hash lhs* h ref)]
[body (E body ref comp)])
(let ([rhs* (do-rhs* 0 lhs* rhs* ref comp vref vcomp)])
(let-values ([(slhs* srhs* llhs* lrhs* clhs* crhs*)
(partition-rhs* 0 lhs* rhs* vref vcomp)])
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(let ([v* (map (lambda (x) (make-constant (void))) clhs*)])
;(let ([ls
; (let f ([ls clhs*])
; (cond
; [(null? ls) '()]
; [(var-assigned (car ls)) (f (cdr ls))]
; [else (cons (var-name (car ls)) (f (cdr ls)))]))])
; (unless (null? ls) (printf "complex: ~s\n" ls)))
(make-bind slhs* srhs*
(make-bind clhs* v*
(make-fix llhs* lrhs*
(if letrec?
(let ([t* (map (lambda (x) (unique-var 'tmp)) clhs*)])
(make-bind t* crhs*
(build-assign* clhs* t* body)))
(build-assign* clhs* crhs* body)))))))))))
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(define (build-assign* lhs* rhs* body)
(cond
[(null? lhs*) body]
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[else
(make-seq
(make-assign (car lhs*) (car rhs*))
(build-assign* (cdr lhs*) (cdr rhs*) body))]))
(define (E x ref comp)
(record-case x
[(constant) x]
[(var) (ref x) x]
[(assign lhs rhs)
(set-var-assigned! lhs #t)
(ref lhs)
(make-assign lhs (E rhs ref comp))]
[(primref) x]
[(bind lhs* rhs* body)
(let ([rhs* (E* rhs* ref comp)])
(let ([h (make-hash-table)])
(let ([body (E body (extend-hash lhs* h ref) comp)])
(make-bind lhs* rhs* body))))]
[(recbind lhs* rhs* body)
(if (null? lhs*)
(E body ref comp)
(do-recbind lhs* rhs* body ref comp #t))]
[(rec*bind lhs* rhs* body)
(if (null? lhs*)
(E body ref comp)
(do-recbind lhs* rhs* body ref comp #f))]
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[(conditional e0 e1 e2)
(make-conditional (E e0 ref comp) (E e1 ref comp) (E e2 ref comp))]
[(seq e0 e1) (make-seq (E e0 ref comp) (E e1 ref comp))]
[(clambda g cls*)
(make-clambda g
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(map (lambda (x)
(record-case x
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[(clambda-case info body)
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(let ([h (make-hash-table)])
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(let ([body (E body (extend-hash (case-info-args info) h ref) void)])
(make-clambda-case info body)))]))
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cls*)
#f)]
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[(funcall rator rand*)
(let ([rator (E rator ref comp)] [rand* (E* rand* ref comp)])
(record-case rator
[(primref op)
(unless (memq op simple-primitives)
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(comp))]
[else
(comp)])
(make-funcall rator rand*))]
[(mvcall p c)
(let ([p (E p ref comp)] [c (E c ref comp)])
(comp)
(make-mvcall p c))]
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[(forcall rator rand*)
(make-forcall rator (E* rand* ref comp))]
[else (error who "invalid expression ~s" (unparse x))]))
(E x (lambda (x) (error who "free var ~s found" x))
void))
(define (uncover-assigned/referenced x)
(define who 'uncover-assigned/referenced)
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(define (Expr* x*)
(for-each Expr x*))
(define (init-var x)
(set-var-assigned! x #f)
(set-var-referenced! x #f))
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(define (Expr x)
(record-case x
[(constant) (void)]
[(var) (set-var-referenced! x #t)]
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[(primref) (void)]
[(bind lhs* rhs* body)
(for-each init-var lhs*)
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(begin (Expr body) (Expr* rhs*))]
[(fix lhs* rhs* body)
(for-each init-var lhs*)
(Expr* rhs*)
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(Expr body)
(when (ormap var-assigned lhs*)
(error who "a fix lhs is assigned"))]
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[(conditional test conseq altern)
(begin (Expr test) (Expr conseq) (Expr altern))]
[(seq e0 e1) (begin (Expr e0) (Expr e1))]
[(clambda g cls*)
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(for-each
(lambda (cls)
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(record-case cls
[(clambda-case info body)
(for-each init-var (case-info-args info))
(Expr body)]))
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cls*)]
[(primcall rator rand*) (Expr* rand*)]
[(funcall rator rand*)
(begin (Expr rator) (Expr* rand*))]
[(mvcall p c) (begin (Expr p) (Expr c))]
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[(forcall rator rand*) (Expr* rand*)]
[(assign lhs rhs)
(set-var-assigned! lhs #t)
(Expr rhs)]
[else (error who "invalid expression ~s" (unparse x))]))
(Expr x)
x)
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#|FIXME:missing-optimizations
111 cadr
464 $record/rtd?
404 memq
249 map
114 not
451 car
224 syntax-error
248 $syntax-dispatch
237 pair?
125 length
165 $cdr
137 $car
805 $record-ref
181 fixnum?
328 null?
136 fx-
207 eq?
153 call-with-values
165 values
336 apply
384 cdr
898 cons
747 error
555 void
645 list
|#
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;;; FIXME URGENT: should handle (+ x k), (- x k) where k is a fixnum
;;; also fx+, fx-
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(module (optimize-primcall)
(define (optimize-primcall ctxt op rand*)
(cond
[(getprop op *cookie*) =>
(lambda (proc)
(proc ctxt op rand*
(lambda ()
(make-funcall (make-primref op) rand*))))]
[else
(make-funcall (make-primref op) rand*)]))
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(define (constant-value x k)
(record-case x
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[(constant t) (k t)] ; known
[(bind lhs* rhs* body) (constant-value body k)]
[(fix lhs* rhs* body) (constant-value body k)]
[(seq e0 e1) (constant-value e1 k)]
[else #f]))
(define (mk-seq e0 e1) ;;; keep e1 seq-free.
(cond
[(and (primcall? e0) (eq? (primcall-op e0) 'void)) e1]
[(seq? e1)
(make-seq (make-seq e0 (seq-e0 e1)) (seq-e1 e1))]
[else
(make-seq e0 e1)]))
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(define (equable? x)
(if (number? x) (fixnum? x) #t))
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(define *cookie* (gensym "optimizer-cookie"))
(define-syntax set-cases
(syntax-rules ()
[(_ ctxt op rand* giveup
[(op** ...) b* b** ...] ...)
(begin
(let ([p (lambda (ctxt op rand* giveup) b* b** ...)])
(putprop 'op** *cookie* p) ...
(void)) ...)]))
(set-cases ctxt op rand* giveup
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[(eq?)
(or (and (fx= (length rand*) 2)
(let ([a0 (car rand*)] [a1 (cadr rand*)])
(or
(constant-value a0
(lambda (x0)
(constant-value a1
(lambda (x1)
(mk-seq (mk-seq a0 a1)
(make-constant (eq? x0 x1)))))
(and (eq? ctxt 'e)
(mk-seq a0 a1)))))))
(giveup))]
[(eqv?)
(or (and (fx= (length rand*) 2)
(let ([a0 (car rand*)] [a1 (cadr rand*)])
(or
(constant-value a0
(lambda (x0)
(or (constant-value a1
(lambda (x1)
(mk-seq (mk-seq a0 a1)
(make-constant (eqv? x0 x1)))))
(and (equable? x0)
(optimize-primcall ctxt 'eq? rand*)))))
(constant-value a1
(lambda (x1)
(and (equable? x1)
(optimize-primcall ctxt 'eq? rand*))))
(and (eq? ctxt 'e)
(mk-seq a0 a1)))))
(giveup))]
[(memv)
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(or (and (fx= (length rand*) 2)
(let ([a0 (car rand*)] [a1 (cadr rand*)])
(constant-value a1
(lambda (ls)
(cond
[(not (list? ls)) #f]
[(eq? ctxt 'e) (mk-seq a0 a1)]
[(constant-value a0
(lambda (x)
(mk-seq (mk-seq a0 a1)
(case ctxt
[(v) (make-constant (memv x ls))]
[else (make-constant
(if (memv x ls) #t #f))]))))]
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[(andmap equable? ls)
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(optimize-primcall ctxt 'memq rand*)]
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[(fx= (length ls) 1)
(mk-seq a1
(optimize-primcall ctxt 'eqv?
(list a0 (make-constant (car ls)))))]
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[else #f])))))
(giveup))]
[(memq)
(or (and (fx= (length rand*) 2)
(let ([a0 (car rand*)] [a1 (cadr rand*)])
(constant-value a1
(lambda (ls)
(cond
[(not (list? ls)) #f]
[(eq? ctxt 'e) (make-seq a0 a1)]
[(constant-value a0
(lambda (x)
(mk-seq (mk-seq a0 a1)
(case ctxt
[(v) (make-constant (memq x ls))]
[else (make-constant
(if (memq x ls) #t #f))]))))]
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[(fx= (length ls) 1)
(mk-seq a1
(optimize-primcall ctxt 'eq?
(list a0 (make-constant (car ls)))))]
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[else (make-funcall (make-primref '$memq) rand*)])))))
(giveup))]
[(length)
(or (and (fx= (length rand*) 1)
(let ([a0 (car rand*)])
(constant-value a0
(lambda (ls)
(cond
[(not (list? ls)) #f]
[(eq? ctxt 'v) (make-constant (length ls))]
[(eq? ctxt 'e) a0]
[else (mk-seq a0 (make-constant #t))])))))
(giveup))]
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[(list)
(case ctxt
[(v) (if (null? rand*) (make-constant '()) (giveup))]
[else
(if (null? rand*)
(make-constant #t)
(let f ([a (car rand*)] [d (cdr rand*)])
(cond
[(null? d) (make-seq a (make-constant #t))]
[else
(f (make-seq a (car d)) (cdr d))])))])]
[(cons*)
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(case ctxt
[(e)
(cond
[(null? rand*) (giveup)]
[else
(let f ([a (car rand*)] [d (cdr rand*)])
(cond
[(null? d) a]
[else (f (mk-seq a (car d)) (cdr d))]))])]
[