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t3_1
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ofix5.t
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1993-07-09
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7KB
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(herald ofix5 (syntax-table (env-syntax-table orbit-env)))
;;; from $BACK_END/closure.t
(define (close-analyze-label node heapenv heapvia)
(let* ((live (lambda-live node))
(need-contour? (eq? (lambda-env node) 'needs-link))
(b (variable-binder heapvia))
(via (if (or (lambda-live b)
(known-lambda? b)
(neq? (lambda-strategy b) strategy/heap))
*top-level-lambda*
heapvia)))
(set (lambda-env node) (create-join-point live via need-contour?))
(walk (lambda (var) (set (variable-definition var) 'many)) live)
(close-analyze-body (lambda-body node) '() via '() via)))
;;; from $BACK_END/lookup.t
(define (access-value node value)
(cond ((and (variable? value)
(not (variable-binder value))
(var-is-vcell? value))
(let ((acc (lookup node (get-lvalue value) nil)))
(let ((reg (get-register 'pointer node '*)))
(generate-move acc reg)
(set (reg-node reg) -1)
(reg-offset reg 2))))
(else
(really-access-value node value))))
;;; from $BACK_END/parassign.t
(define (do-assignment movers node)
(iterate loop1 ((movers movers)
(targets (map arg-mover-to movers))
(temp nil))
(cond ((null? movers))
(else
(iterate loop2 ((candidates targets))
(cond ((null? candidates)
(let ((mover (car movers)))
(generate-move (arg-mover-to mover)
(reg-offset TASK
(if (eq? (reg-type (arg-mover-to mover))
'pointer)
task/extra-pointer
task/extra-scratch)))
(really-rep-convert node
(arg-mover-from mover)
(arg-mover-from-rep mover)
(arg-mover-to mover)
(arg-mover-to-rep mover))
(loop1 (cdr movers)
(delq (arg-mover-to mover) targets)
(arg-mover-to mover))))
((not (mem? from-reg-eq? (car candidates) movers))
(let ((mover (car (mem to-reg-eq? (car candidates) movers))))
(really-rep-convert node
(cond ((eq? (arg-mover-from mover) temp)
(if (eq? (reg-type (arg-mover-from mover))
'pointer)
(reg-offset TASK task/extra-pointer)
(reg-offset TASK task/extra-scratch)))
(else
(arg-mover-from mover)))
(arg-mover-from-rep mover)
(arg-mover-to mover)
(arg-mover-to-rep mover))
(loop1 (delq mover movers)
(delq (arg-mover-to mover) targets)
temp)))
(else
(loop2 (cdr candidates)))))))))
;;; from $BACK_END/bookkeep.t
(define (kill-if-dead node where)
(cond ((lambda-node? node)
(walk (lambda (var)
(if (not (or (memq? var (lambda-live where))
(fx= (variable-number var) 0)))
(kill var)))
(lambda-live node)))
(else
(let ((var (leaf-value node)))
(cond ((not (variable? var))
(kill var))
(else
(let ((var (cond ((variable-known var) => lambda-self-var)
(else var))))
(if (not (memq? var (lambda-live where)))
(kill var)))))))))
;;; from $FRONT_END/fixup.t send to hunt
(define (fix-exit-reference var node value)
(let ((proc (call-proc (node-parent node))))
(cond ((eq? node proc)
(return))
((not (primop-node? proc))
(introduce-exit-lambda var node value '#t))
((eq? primop/y (primop-value proc))
(introduce-exit-lambda var node value '#t))
(else
(replace-with-lambda
node
(primop.values-returned
(primop-value (call-proc (node-parent node)))))))))
;;; from $BACK_END/reg.t
(define (allocate-location node prim)
(let ((c (cont node)))
(if (and (lambda-node? c)
(let ((refs (variable-refs (car (lambda-variables c)))))
(and refs
(null? (cdr refs))
(eq? c (node-parent (node-parent (car refs))))
(let ((proc (call-proc (lambda-body c))))
(and (primop-node? proc)
(neq? (primop-value proc) primop/make-cell)))
(reps-compatable?
(primop.rep-wants (leaf-value ((call-arg 2) node)))
(variable-rep (car (lambda-variables c)))))))
(generate-location-access node)
(really-allocate-primop-call node prim))))
(define (introduce-cell var)
(let ((node (variable-binder var))
(new-var (create-variable (variable-name var))))
(hack-references var new-var)
(let-nodes ((call (($ primop/make-cell) 1 (^ cont1)))
(cont1 (() (v new-var))
(($ primop/set-location) 1
(^ cont2) ($ primop/cell-value) (* var) (* new-var)))
(cont2 (#f) ()))
(cond ((primop-ref? (call-proc (lambda-body node))
primop/remove-state-object)
(insert-call call cont2 (car (call-args (lambda-body node)))))
(else
(insert-call call cont2 node))))))
(define (add-side-effects name)
(let* ((def (base-early-binding-env name))
(primop (vref (definition-value def) 0))
(mask (table-entry primop-predicate-table 'primop.side-effects?)))
(modify (%primop-bitv primop)
(lambda (x) (fixnum-logior x 2)))))
(add-side-effects 'receive-values)
#|
;Real Fix - change this in DECLARE.T in the front-end:
(define-declaration (simplifier name exp) (shape)
(cond ((new-env-definition shape name)
=> (lambda (def)
(let* ((clauses `(((primop.simplify self node) (,exp node))
((primop.side-effects? self) '#t)
((primop.integrate? self node) nil)))
(primop (eval (primop-code name '() clauses) orbit-env)))
(set (primop.source primop) clauses)
(add-new-primop shape primop)
(set (definition-value def)
(node->vector (create-primop-node primop))))))
(else
(missing-declaration-variable-warning name 'simplifier))))
|#