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fix prompt in fix in single-value context compilation

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* module/language/tree-il/compile-glil.scm (flatten): When compiling a
  <prompt> in push context with an RA, after the body returns normally,
  jump to that RA instead of to our POST label (which in that case does
  not need to be emitted).  Fixes a tail <prompt> in a push <fix>.

* test-suite/tests/control.test ("prompt in different contexts"): Add
  more test cases.
This commit is contained in:
Andy Wingo 2011-03-27 15:00:18 +02:00
parent 62f528e929
commit 9dadfa47b0
2 changed files with 99 additions and 4 deletions
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8
module/language/tree-il/compile-glil.scm
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@ -1,6 +1,6 @@
;;; TREE-IL -> GLIL compiler
;; Copyright (C) 2001,2008,2009,2010 Free Software Foundation, Inc.
;; Copyright (C) 2001,2008,2009,2010,2011 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
@ -1095,7 +1095,7 @@
;; post
(comp-push body)
(emit-code #f (make-glil-call 'unwind 0))
(emit-branch #f 'br POST))
(emit-branch #f 'br (or RA POST)))
((vals)
(let ((MV (make-label)))
@ -1138,8 +1138,8 @@
(comp-tail body)
(emit-code #f (make-glil-unbind))))
(if (or (eq? context 'push)
(and (eq? context 'drop) (not RA)))
(if (and (not RA)
(or (eq? context 'push) (eq? context 'drop)))
(emit-label POST))))
((<abort> src tag args tail)