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+;;; Optimization flags
+
+;; Copyright (C) 2018 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 (language tree-il optimize)
+ #:use-module (language cps optimize)
+ #:use-module (ice-9 match)
+ #:export (available-optimizations
+ pass-optimization-level
+ optimizations-for-level))
+
+(define (available-optimizations)
+ (append (tree-il-optimizations) (cps-optimizations)))
+
+(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))))))