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;;; Optimization flags
;; Copyright (C) 2018,2020-2022,2024 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 (system base optimize)
#:use-module (ice-9 match)
#:export (available-optimizations
pass-optimization-level
optimizations-for-level))
(define* (available-optimizations #:optional lang-name)
(match lang-name
('tree-il
'((#:cps? 2)
(#:resolve-free-vars? 2)
(#:resolve-primitives? 1)
(#:expand-primitives? 1)
(#:letrectify? 2)
(#:demux-lambda? 2)
(#:seal-private-bindings? 3)
(#:partial-eval? 1)
(#:eta-expand? 2)
(#:inlinable-exports? 2)
(#:cross-module-inlining? 2)))
('cps
'( ;; (#:split-rec? #t)
(#:simplify? 2)
(#:eliminate-dead-code? 2)
(#:prune-top-level-scopes? 2)
(#:contify? 2)
(#:specialize-primcalls? 2)
(#:peel-loops? 2)
(#:cse? 2)
(#:type-fold? 2)
(#:elide-arity-checks? 2)
(#:optimize-known-return-types? 2)
(#:resolve-self-references? 2)
(#:devirtualize-integers? 2)
(#:specialize-numbers? 2)
(#:optimize-branch-chains? 2)
(#:licm? 2)
(#:rotate-loops? 2)
;; This one is used by the slot allocator.
(#:precolor-calls? 2)))
(#f
(append (available-optimizations 'tree-il)
(available-optimizations 'cps)))))
(define (pass-optimization-level kw)
(match (assq kw (available-optimizations))
((kw level) level)
(_ (error "unknown optimization" kw))))
;; Turn on all optimizations unless -O0.
(define (optimizations-for-level level)
(let lp ((options (available-optimizations)))
(match options
(() '())
(((kw at-level) . options)
(cons* kw (<= at-level level) (lp options))))))
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