diff --git a/compiler/control.lisp b/compiler/control.lisp index 5bc2f7efaece4eb8b339e06c5c220deab562acab..e41837e6a9b8bf8bbaf2e7eb2232ec57f23ff40d 100644 --- a/compiler/control.lisp +++ b/compiler/control.lisp @@ -7,7 +7,7 @@ ;;; Scott Fahlman or slisp-group@cs.cmu.edu. ;;; (ext:file-comment - "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/compiler/control.lisp,v 1.6 1991/11/08 15:28:35 ram Exp $") + "$Header: /Volumes/share2/src/cmucl/cvs2git/cvsroot/src/compiler/control.lisp,v 1.7 1991/11/08 22:20:33 ram Exp $") ;;; ;;; ********************************************************************** ;;; @@ -53,6 +53,10 @@ ;;; numbers. Beats me if this is in general optimal, but it works in simple ;;; cases. ;;; +;;; This optimization is inhibited in functions with NLX EPs, since it is hard +;;; to do this without possibly messing up the special-case walking from NLX +;;; EPs described in CONTROL-ANALYZE-1-FUN. +;;; (defun find-rotated-loop-head (block) (declare (type cblock block)) (let* ((num (block-number block)) @@ -63,7 +67,7 @@ (< (block-number pred) num)) (return pred))))) (cond - (pred + ((and pred (not (environment-nlx-info env))) (let ((current pred) (current-num (block-number pred))) (block DONE