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99983d544a
* module/language/scheme/decompile-tree-il.scm (do-decompile):
* module/language/tree-il/analyze.scm (analyze-lexicals):
* module/language/tree-il/canonicalize.scm (canonicalize):
* module/language/tree-il/compile-glil.scm (flatten-lambda-case):
* module/language/tree-il/cse.scm (cse):
* module/language/tree-il/peval.scm (peval):
* test-suite/tests/peval.test ("partial evaluation"): Partially revert
178a40928, so that escape-only prompts explicitly inline their bodies.
82 lines
2.8 KiB
Scheme
82 lines
2.8 KiB
Scheme
;;; Tree-il canonicalizer
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;; Copyright (C) 2011, 2012, 2013 Free Software Foundation, Inc.
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;;;; This library is free software; you can redistribute it and/or
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;;;; modify it under the terms of the GNU Lesser General Public
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;;;; License as published by the Free Software Foundation; either
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;;;; version 3 of the License, or (at 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,
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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 GNU
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;;;; Lesser 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
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;;;; License along with this library; if not, write to the Free Software
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;;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;;; Code:
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(define-module (language tree-il canonicalize)
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#:use-module (language tree-il)
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#:use-module (ice-9 match)
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#:use-module (srfi srfi-1)
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#:export (canonicalize))
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(define (tree-il-any proc exp)
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(tree-il-fold (lambda (exp res)
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(or res (proc exp)))
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(lambda (exp res) res)
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#f exp))
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(define (canonicalize x)
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(post-order
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(lambda (x)
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(match x
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(($ <let> src () () () body)
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body)
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(($ <letrec> src _ () () () body)
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body)
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(($ <fix> src () () () body)
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body)
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(($ <lambda> src meta #f)
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;; Give a body to case-lambda with no clauses.
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(make-lambda
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src meta
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(make-lambda-case
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#f '() #f #f #f '() '()
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(make-primcall
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#f
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'throw
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(list (make-const #f 'wrong-number-of-args)
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(make-const #f #f)
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(make-const #f "Wrong number of arguments")
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(make-const #f '())
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(make-const #f #f)))
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#f)))
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(($ <prompt> src escape-only? tag body handler)
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;; The prompt handler should be a simple lambda, so that we
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;; can inline it.
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(match handler
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(($ <lambda> _ _
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($ <lambda-case> _ req #f rest #f () syms body #f))
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x)
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(else
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(let ((handler-sym (gensym))
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(args-sym (gensym)))
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(make-let
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#f (list 'handler) (list handler-sym) (list handler)
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(make-prompt
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src escape-only? tag body
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(make-lambda
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#f '()
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(make-lambda-case
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#f '() #f 'args #f '() (list args-sym)
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(make-primcall
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#f 'apply
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(list (make-lexical-ref #f 'handler handler-sym)
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(make-lexical-ref #f 'args args-sym)))
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#f))))))))
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(_ x)))
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x))
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