mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-06-17 17:20:29 +02:00
31cb10af81
* doc/ref/api-evaluation.texi (Compilation): Document the -O options. * doc/ref/api-modules.texi (Using Guile Modules): @@ docs refer to declarative modules. (Creating Guile Modules): Use when for 1-armed if. (Declarative Modules): Make implications of declarative bindings more explicit, and explicitly document ways to disable the optimization. * module/language/tree-il/optimize.scm (tree-il-optimizations): Punt letrectification to -O2.
70 lines
2.6 KiB
Scheme
70 lines
2.6 KiB
Scheme
;;; Tree-il optimizer
|
|
|
|
;; Copyright (C) 2009, 2010-2015, 2018, 2019 Free Software Foundation, Inc.
|
|
|
|
;;;; This library is free software; you can redistribute it and/or
|
|
;;;; modify it under the terms of the GNU Lesser General Public
|
|
;;;; License as published by the Free Software Foundation; either
|
|
;;;; version 3 of the License, or (at your option) any later version.
|
|
;;;;
|
|
;;;; This library is distributed in the hope that it will be useful,
|
|
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
;;;; Lesser General Public License for more details.
|
|
;;;;
|
|
;;;; You should have received a copy of the GNU Lesser General Public
|
|
;;;; License along with this library; if not, write to the Free Software
|
|
;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
;;; Code:
|
|
|
|
(define-module (language tree-il optimize)
|
|
#:use-module (language tree-il)
|
|
#:use-module (language tree-il debug)
|
|
#:use-module (language tree-il fix-letrec)
|
|
#:use-module (language tree-il letrectify)
|
|
#:use-module (language tree-il peval)
|
|
#:use-module (language tree-il primitives)
|
|
#:use-module (ice-9 match)
|
|
#:export (optimize
|
|
tree-il-optimizations))
|
|
|
|
(define (kw-arg-ref args kw default)
|
|
(match (memq kw args)
|
|
((_ val . _) val)
|
|
(_ default)))
|
|
|
|
(define *debug?* #f)
|
|
|
|
(define (maybe-verify x)
|
|
(if *debug?*
|
|
(verify-tree-il x)
|
|
x))
|
|
|
|
(define (optimize x env opts)
|
|
(define-syntax-rule (run-pass pass kw default)
|
|
(when (kw-arg-ref opts kw default)
|
|
(set! x (maybe-verify (pass x)))))
|
|
(define (resolve* x) (resolve-primitives x env))
|
|
(define (peval* x) (peval x env))
|
|
(maybe-verify x)
|
|
(run-pass resolve* #:resolve-primitives? #t)
|
|
(run-pass expand-primitives #:expand-primitives? #t)
|
|
(run-pass letrectify #:letrectify? #t)
|
|
(set! x (fix-letrec x))
|
|
(run-pass peval* #:partial-eval? #t)
|
|
x)
|
|
|
|
(define (tree-il-optimizations)
|
|
;; Avoid resolve-primitives until -O2, when CPS optimizations kick in.
|
|
;; Otherwise, inlining the primcalls during Tree-IL->CPS compilation
|
|
;; will result in a lot of code that will never get optimized nicely.
|
|
;; Similarly letrectification is great for generated code quality, but
|
|
;; as it gives the compiler more to work with, it increases compile
|
|
;; time enough that we reserve it for -O2. Also, this makes -O1 avoid
|
|
;; assumptions about top-level values, in the same way that avoiding
|
|
;; resolve-primitives does.
|
|
'((#:resolve-primitives? 2)
|
|
(#:expand-primitives? 1)
|
|
(#:letrectify? 2)
|
|
(#:partial-eval? 1)))
|