mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-05-01 04:10:18 +02:00
cd5ab6377b
* module/language/cps.scm ($switch): New term. * doc/ref/compiler.texi (CPS in Guile): Add documentation. * module/language/cps.scm (build-term, parse-cps, unparse-cps) * module/language/cps/closure-conversion.scm (compute-non-operator-uses) (compute-singly-referenced-labels, rewrite-shared-closure-calls) (compute-free-vars, convert-one) * module/language/cps/compile-bytecode.scm (compile-function) * module/language/cps/contification.scm (compute-singly-referenced-labels) (compute-contification-candidates, apply-contification) * module/language/cps/cse.scm (compute-truthy-expressions) (forward-cont, term-successors, eliminate-common-subexpressions-in-fun) * module/language/cps/dce.scm (compute-known-allocations) (compute-live-code, process-eliminations) * module/language/cps/devirtualize-integers.scm (compute-use-counts) (peel-trace) * module/language/cps/effects-analysis.scm (compute-effects) * module/language/cps/licm.scm (hoist-one, hoist-in-loop) * module/language/cps/loop-instrumentation.scm (compute-loop-headers) * module/language/cps/peel-loops.scm (rename-cont) * module/language/cps/renumber.scm (sort-labels-locally, renumber) * module/language/cps/rotate-loops.scm (rotate-loop) (rotate-loops-in-function) * module/language/cps/self-references.scm (resolve-self-references) * module/language/cps/simplify.scm (compute-singly-referenced-vars) (eta-reduce, compute-singly-referenced-labels, beta-reduce) * module/language/cps/slot-allocation.scm (compute-defs-and-uses) (add-prompt-control-flow-edges, compute-var-representations) * module/language/cps/specialize-numbers.scm (compute-significant-bits) * module/language/cps/split-rec.scm (compute-free-vars) * module/language/cps/type-fold.scm (local-type-fold) * module/language/cps/types.scm (successor-count, infer-types) * module/language/cps/utils.scm (compute-function-body) (compute-successors, compute-predecessors) * module/language/cps/verify.scm (compute-available-definitions) (check-valid-var-uses, check-arities): Add support for new term.
81 lines
3 KiB
Scheme
81 lines
3 KiB
Scheme
;;; Continuation-passing style (CPS) intermediate language (IL)
|
|
|
|
;; Copyright (C) 2013-2020 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
|
|
|
|
;;; Commentary:
|
|
;;;
|
|
;;; A pass that replaces free references to recursive functions with
|
|
;;; bound references.
|
|
;;;
|
|
;;; Code:
|
|
|
|
(define-module (language cps self-references)
|
|
#:use-module (ice-9 match)
|
|
#:use-module ((srfi srfi-1) #:select (fold))
|
|
#:use-module (language cps)
|
|
#:use-module (language cps utils)
|
|
#:use-module (language cps intmap)
|
|
#:use-module (language cps intset)
|
|
#:export (resolve-self-references))
|
|
|
|
(define* (resolve-self-references cps #:optional (label 0) (env empty-intmap))
|
|
(define (subst var)
|
|
(intmap-ref env var (lambda (var) var)))
|
|
|
|
(define (rename-exp exp)
|
|
(rewrite-exp exp
|
|
((or ($ $const) ($ $prim)) ,exp)
|
|
(($ $call proc args)
|
|
($call (subst proc) ,(map subst args)))
|
|
(($ $callk k proc args)
|
|
($callk k (subst proc) ,(map subst args)))
|
|
(($ $primcall name param args)
|
|
($primcall name param ,(map subst args)))
|
|
(($ $values args)
|
|
($values ,(map subst args)))))
|
|
|
|
(define (rename-term term)
|
|
(rewrite-term term
|
|
(($ $continue k src exp)
|
|
($continue k src ,(rename-exp exp)))
|
|
(($ $branch kf kt src op param args)
|
|
($branch kf kt src op param ,(map subst args)))
|
|
(($ $switch kf kt* src arg)
|
|
($switch kf kt* src (subst arg)))
|
|
(($ $prompt k kh src escape? tag)
|
|
($prompt k kh src escape? (subst tag)))
|
|
(($ $throw src op param args)
|
|
($throw src op param ,(map subst args)))))
|
|
|
|
(define (visit-label label cps)
|
|
(match (intmap-ref cps label)
|
|
(($ $kargs _ _ ($ $continue k src ($ $fun label)))
|
|
(resolve-self-references cps label env))
|
|
(($ $kargs _ _ ($ $continue k src
|
|
($ $rec names vars (($ $fun labels) ...))))
|
|
(fold (lambda (label var cps)
|
|
(match (intmap-ref cps label)
|
|
(($ $kfun src meta self)
|
|
(resolve-self-references cps label
|
|
(intmap-add env var self)))))
|
|
cps labels vars))
|
|
(($ $kargs names vars term)
|
|
(intmap-replace! cps label
|
|
(build-cont ($kargs names vars ,(rename-term term)))))
|
|
(_ cps)))
|
|
|
|
(intset-fold visit-label (compute-function-body cps label) cps))
|