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more optimizations

This commit is contained in:
Abdulaziz Ghuloum 2006-12-06 00:33:25 -05:00
parent 15a36e7333
commit 06c64dab3a
3 changed files with 121 additions and 4 deletions
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BIN
lib/ikarus.boot
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123
lib/libcompile.ss
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@ -913,7 +913,6 @@
(define (optimize-primcall ctxt op rand*)
(define (giveup)
(tally-giveup op)
(make-funcall (make-primref op) rand*))
(define (constant-value x k)
(record-case x
@ -1008,7 +1007,125 @@
(list a0 (make-constant (car ls)))))]
[else (make-primcall '$memq rand*)])))))
(giveup))]
[else (giveup)]))
[(list)
(case ctxt
[(v) (if (null? rand*) (make-constant '()) (giveup))]
[else
(if (null? rand*)
(make-constant #t)
(let f ([a (car rand*)] [d (cdr rand*)])
(cond
[(null? d) (make-seq a (make-constant #t))]
[else
(f (make-seq a (car d)) (cdr d))])))])]
[(list*)
(case ctxt
[(e)
(cond
[(null? rand*) (giveup)]
[else
(let f ([a (car rand*)] [d (cdr rand*)])
(cond
[(null? d) a]
[else (f (mk-seq a (car d)) (cdr d))]))])]
[(p)
(cond
[(null? rand*) (giveup)]
[(null? (cdr rand*))
(let ([a (car rand*)])
(or (constant-value a
(lambda (v)
(mk-seq a (make-constant (if v #t #f)))))
a))]
[else
(let f ([a (car rand*)] [d (cdr rand*)])
(cond
[(null? d) (mk-seq a (make-constant #t))]
[else (f (mk-seq a (car d)) (cdr d))]))])]
[else
(cond
[(null? rand*) (giveup)]
[(null? (cdr rand*)) (car rand*)]
[else (giveup)])])]
[(cons)
(or (and (fx= (length rand*) 2)
(let ([a0 (car rand*)] [a1 (cadr rand*)])
(case ctxt
[(e) (mk-seq a0 a1)]
[(p) (mk-seq (mk-seq a0 a1) (make-constant #t))]
[else (giveup)])))
(giveup))]
[($record-ref $record/rtd?)
(or (and (fx= (length rand*) 2)
(let ([a0 (car rand*)] [a1 (cadr rand*)])
(case ctxt
[(e) (mk-seq a0 a1)]
[else
(or (constant-value a1
(lambda (n1)
(mk-seq a1
(make-primcall op
(list a0 (make-constant n1))))))
(make-primcall op rand*))])))
(error 'optimize "~s rands to ~s" (map unparse rand*) op))]
[(void)
(or (and (null? rand*)
(case ctxt
[(p) (make-constant #t)]
[else (make-constant (void))]))
(giveup))]
[(car cdr)
(or (and (fx= (length rand*) 1)
(let ([a (car rand*)])
(constant-value a
(lambda (v)
(and (pair? v)
(mk-seq a
(make-constant
(case op
[(car) (car v)]
[else (cdr v)]))))))))
(giveup))]
[(not null? pair? fixnum? vector?)
(or (and (fx= (length rand*) 1)
(let ([a (car rand*)])
(case ctxt
[(e) a]
[else
(constant-value a
(lambda (v)
(mk-seq a
(make-constant
(case op
[(not) (not v)]
[(null?) (null? v)]
[(pair?) (pair? v)]
[(fixnum?) (fixnum? v)]
[(vector?) (vector? v)]
[else
(error 'optimize
"huh ~s" op)])))))])))
(giveup))]
[($car $cdr)
(or (and (fx= (length rand*) 1)
(let ([a (car rand*)])
(or (constant-value a
(lambda (v)
(if (pair? v)
(make-seq a
(make-constant
(case op
[($car) (car v)]
[else (cdr v)])))
(error 'optimize
"incorrect arg ~s to ~s"
v op))))
(giveup))))
(error 'optimize "incorrect args ~s to ~s"
(map unparse rand*) op))]
[else
(tally-giveup op)
(giveup)]))
(define (copy-propagate x)
@ -3737,7 +3854,7 @@
[(null? arg*) ac]
[else
(Effect (car arg*) (f (cdr arg*)))]))]
[(car) ;;; may signal an error
[(car cdr top-level-value) ;;; may signal an error
(do-value-prim op arg* ac)]
[else
(error 'do-effect-prim "unhandled op ~s" op)]))

2
lib/makefile.ss
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@ -266,5 +266,5 @@
(format "cat ~a > ikarus.boot"
(join " " (map caddr scheme-library-files))))
;(#%compiler-giveup-tally)
(#%compiler-giveup-tally)