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Sketch of how to choose different compiler based on -O0

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* module/system/base/compile.scm (next-pass, compute-compiler): Allow
  optimization level to determine pass order.
This commit is contained in:
Andy Wingo 2020-05-08 17:28:55 +02:00
parent 4311dc9858
commit ded883b6f0
1 changed files with 16 additions and 6 deletions
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22
module/system/base/compile.scm
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@ -230,18 +230,28 @@
(#f (lambda (exp env) exp))
(proc (proc optimization-level opts))))
(define (next-pass from lang to optimization-level opts)
(if (eq? lang to)
#f ;; Done.
(match (language-compilers lang)
(((name . pass))
(cons (lookup-language name) pass))
((_ _)
(error "multiple compilers; language should supply chooser"))
(_
(error "no way to compile" from "to" to)))))
(define (compute-compiler from to optimization-level warning-level opts)
(let lp ((order (or (lookup-compilation-order from to)
(error "no way to compile" from "to" to))))
(match order
(() (lambda (exp env) (values exp env env)))
(((lang . pass) . order)
(let lp ((lang from))
(match (next-pass from lang to optimization-level opts)
(#f (lambda (exp env) (values exp env env)))
((next . pass)
(let* ((analyze (compute-analyzer lang warning-level opts))
(lower (compute-lowerer lang optimization-level opts))
(compile (lambda (exp env)
(analyze exp env)
(pass (lower exp env) env opts)))
(tail (lp order)))
(tail (lp next)))
(lambda (exp env)
(let*-values (((exp env cenv) (compile exp env))
((exp env cenv*) (tail exp env)))