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mescc: Refactor function-offset.

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* module/mes/elf-util.mes (function-offset): Recurse down.  Factor 5
  speedup on mini-mes.c.
This commit is contained in:
Jan Nieuwenhuizen 2017-03-18 19:12:25 +01:00
parent 4b349fabf1
commit 2397e0c8e2
1 changed files with 9 additions and 5 deletions
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14
module/mes/elf-util.mes
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@ -72,11 +72,15 @@
(let ((cache '()))
(lambda (name functions)
(or (assoc-ref cache name)
(let* ((prefix (function-prefix name functions))
(offset (if prefix (length (functions->text (cdr prefix) '() 0 0 0))
0)))
(if (and prefix (or (equal? name "exit") (> offset 0))) (set! cache (assoc-set! cache name offset)))
offset)))))
(let* ((functions (if (and (pair? functions) (equal? (caar functions) "exit")) functions (reverse functions)))
(prefix (and=> (function-prefix name functions) cdr))
(offset (and prefix
(if (null? prefix) 0
(+ (length (functions->text (list (car prefix)) '() 0 0 0))
(if (null? (cdr prefix)) 0
(function-offset (caar prefix) functions)))))))
(if (and offset (or (equal? name "exit") (> offset 0))) (set! cache (assoc-set! cache name offset)))
(or offset 0))))))
(define label-offset
(let ((cache '()))