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594d9d4c48
* module/language/Makefile.am: OK, we can compile compile-ghil.scm now, thankfully. * module/language/ecmascript/compile-ghil.scm (ormatch): New macro, a wrapper around pmatch to avoid some of the more egregious non-tail recursiveness. (comp): Use ormatch. * module/language/ghil.scm (unparse-ghil): The body of bind and mv-bind is a single expression, not a list of expressions. * module/language/ghil/compile-glil.scm (codegen): Be more clever when allocating "local" variables -- if a variable goes out of scope, its index can be re-used later. * module/language/glil.scm (parse-glil, unparse-ghil): The "rest" of a mv-bind is a flag, not a list. The "ra" of an mv-call is a label, not a GLIL expression. * module/language/objcode/spec.scm (collapse-locals, decompile-value): When decompiling a value, process the bindings list differently. Comments in the code. * module/language/scheme/compile-ghil.scm (define-scheme-translator): Fix the generated error procedure. (let): Re-indent. (letrec): Re-indent. * module/system/base/syntax.scm (record-case): If the body of a clause is null, fill it with the unspecified value.
167 lines
5.6 KiB
Scheme
167 lines
5.6 KiB
Scheme
;;; Guile Low Intermediate Language
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;; Copyright (C) 2001 Free Software Foundation, Inc.
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;;
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;;
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;; You should have received a copy of the GNU General Public License
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;; along with this program; see the file COPYING. If not, write to
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;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Code:
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(define-module (language glil)
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#:use-module (system base syntax)
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#:use-module (system base pmatch)
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#:use-module ((srfi srfi-1) #:select (fold))
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#:export
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(<glil-program> make-glil-program glil-program?
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glil-program-nargs glil-program-nrest glil-program-nlocs glil-program-nexts
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glil-program-meta glil-program-body glil-program-closure-level
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<glil-bind> make-glil-bind glil-bind?
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glil-bind-vars
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<glil-mv-bind> make-glil-mv-bind glil-mv-bind?
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glil-mv-bind-vars glil-mv-bind-rest
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<glil-unbind> make-glil-unbind glil-unbind?
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<glil-source> make-glil-source glil-source?
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glil-source-props
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<glil-void> make-glil-void glil-void?
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<glil-const> make-glil-const glil-const?
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glil-const-obj
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<glil-argument> make-glil-argument glil-argument?
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glil-argument-op glil-argument-index
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<glil-local> make-glil-local glil-local?
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glil-local-op glil-local-index
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<glil-external> make-glil-external glil-external?
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glil-external-op glil-external-depth glil-external-index
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<glil-toplevel> make-glil-toplevel glil-toplevel?
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glil-toplevel-op glil-toplevel-name
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<glil-module> make-glil-module glil-module?
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glil-module-op glil-module-mod glil-module-name glil-module-public?
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<glil-label> make-glil-label glil-label?
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glil-label-label
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<glil-branch> make-glil-branch glil-branch?
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glil-branch-inst glil-branch-label
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<glil-call> make-glil-call glil-call?
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glil-call-inst glil-call-nargs
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<glil-mv-call> make-glil-mv-call glil-mv-call?
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glil-mv-call-nargs glil-mv-call-ra
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parse-glil unparse-glil))
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(define (print-glil x port)
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(format port "#<glil ~s>" (unparse-glil x)))
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(define-type (<glil> #:printer print-glil)
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;; Meta operations
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(<glil-program> nargs nrest nlocs nexts meta body (closure-level #f))
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(<glil-bind> vars)
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(<glil-mv-bind> vars rest)
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(<glil-unbind>)
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(<glil-source> props)
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;; Objects
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(<glil-void>)
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(<glil-const> obj)
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;; Variables
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(<glil-argument> op index)
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(<glil-local> op index)
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(<glil-external> op depth index)
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(<glil-toplevel> op name)
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(<glil-module> op mod name public?)
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;; Controls
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(<glil-label> label)
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(<glil-branch> inst label)
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(<glil-call> inst nargs)
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(<glil-mv-call> nargs ra))
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(define (compute-closure-level body)
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(fold (lambda (x ret)
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(record-case x
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((<glil-program> closure-level) (max ret closure-level))
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((<glil-external> depth) (max ret depth))
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(else ret)))
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0 body))
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(define %make-glil-program make-glil-program)
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(define (make-glil-program . args)
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(let ((prog (apply %make-glil-program args)))
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(if (not (glil-program-closure-level prog))
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(set! (glil-program-closure-level prog)
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(compute-closure-level (glil-program-body prog))))
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prog))
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(define (parse-glil x)
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(pmatch x
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((program ,nargs ,nrest ,nlocs ,nexts ,meta . ,body)
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(make-glil-program nargs nrest nlocs nexts meta (map parse-glil body)))
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((bind . ,vars) (make-glil-bind vars))
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((mv-bind ,vars ,rest) (make-glil-mv-bind vars rest))
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((unbind) (make-glil-unbind))
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((source ,props) (make-glil-source props))
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((void) (make-glil-void))
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((const ,obj) (make-glil-const obj))
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((argument ,op ,index) (make-glil-argument op index))
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((local ,op ,index) (make-glil-local op index))
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((external ,op ,depth ,index) (make-glil-external op depth index))
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((toplevel ,op ,name) (make-glil-toplevel op name))
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((module public ,op ,mod ,name) (make-glil-module op mod name #t))
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((module private ,op ,mod ,name) (make-glil-module op mod name #f))
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((label ,label) (make-label ,label))
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((branch ,inst ,label) (make-glil-branch inst label))
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((call ,inst ,nargs) (make-glil-call inst nargs))
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((mv-call ,nargs ,ra) (make-glil-mv-call nargs ra))
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(else (error "invalid glil" x))))
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(define (unparse-glil glil)
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(record-case glil
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;; meta
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((<glil-program> nargs nrest nlocs nexts meta body)
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`(program ,nargs ,nrest ,nlocs ,nexts ,meta ,@(map unparse-glil body)))
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((<glil-bind> vars) `(bind ,@vars))
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((<glil-mv-bind> vars rest) `(mv-bind ,vars ,rest))
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((<glil-unbind>) `(unbind))
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((<glil-source> props) `(source ,props))
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;; constants
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((<glil-void>) `(void))
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((<glil-const> obj) `(const ,obj))
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;; variables
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((<glil-argument> op index)
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`(argument ,op ,index))
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((<glil-local> op index)
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`(local ,op ,index))
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((<glil-external> op depth index)
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`(external ,op ,depth ,index))
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((<glil-toplevel> op name)
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`(toplevel ,op ,name))
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((<glil-module> op mod name public?)
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`(module ,(if public? 'public 'private) ,op ,mod ,name))
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;; controls
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((<glil-label> label) `(label ,label))
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((<glil-branch> inst label) `(branch ,inst ,label))
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((<glil-call> inst nargs) `(call ,inst ,nargs))
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((<glil-mv-call> nargs ra) `(mv-call ,nargs ,ra))))
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