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* module/language/cps/hoot/lower-primcalls.scm: New file. * module/language/cps/hoot.scm (make-lowerer): Wire in new pass. * am/bootstrap.am (SOURCES): Add new file.
81 lines
2.6 KiB
Scheme
81 lines
2.6 KiB
Scheme
;;; Continuation-passing style (CPS) intermediate language (IL)
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;; Copyright (C) 2023 Free Software Foundation, Inc.
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;;; This library is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU Lesser General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; This library is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
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;;; General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU Lesser General Public License
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;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;;;
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;;; Backend-specific lowering and optimization when targetting the Hoot
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;;; Wasm/GC run-time.
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;;;
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;;; Code:
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(define-module (language cps hoot)
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#:use-module (ice-9 match)
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#:use-module (language cps dce)
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#:use-module (language cps simplify)
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#:use-module (language cps verify)
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#:use-module (language cps hoot lower-primcalls)
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#:use-module (language cps hoot tailify)
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#:use-module (language cps hoot unify-returns)
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#:export (make-lowerer
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available-optimizations))
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(define *debug?* #f)
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(define (maybe-verify program)
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(if *debug?*
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(verify program)
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program))
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(define-syntax-rule (define-optimizer optimize (pass kw) ...)
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(define* (optimize program #:optional (opts '()))
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(let* ((program (maybe-verify program))
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(program (if (assq-ref opts kw)
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(maybe-verify (pass program))
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program))
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...)
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program)))
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(define (available-optimizations)
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'((#:eliminate-dead-code? 2)
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(#:simplify? 1)))
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(define-optimizer optimize-hoot-backend-cps
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(eliminate-dead-code #:eliminate-dead-code?)
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(simplify #:simplify?))
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(define (select-optimizations optimization-level opts all-opts)
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(define (kw-arg-ref args kw default)
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(match (memq kw args)
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((_ val . _) val)
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(_ default)))
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(define (enabled-for-level? level) (<= level optimization-level))
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(let lp ((all-opts all-opts))
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(match all-opts
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(() '())
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(((kw level) . all-opts)
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(acons kw (kw-arg-ref opts kw (enabled-for-level? level))
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(lp all-opts))))))
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(define (make-lowerer optimization-level opts)
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(let ((opts (select-optimizations optimization-level opts
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(available-optimizations))))
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(lambda (exp env)
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(optimize-hoot-backend-cps
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(unify-returns
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(tailify
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(lower-primcalls exp)))
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opts))))
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