From: Chris Hanson <org/chris-hanson/cph>
Date: Wed, 15 Nov 1989 02:48:07 +0000 (+0000)
Subject: Rules that perform index->fixnum conversions must use arithmetic left
X-Git-Tag: 20090517-FFI~11687
X-Git-Url: https://birchwood-abbey.net/git?a=commitdiff_plain;h=1128d2c3cfd143ef1b20d30f00032056d1853c8e;p=mit-scheme.git

Rules that perform index->fixnum conversions must use arithmetic left
shift so that proper testing for overflow can occur.  The reason:
these rules also get invoked by generic arithmetic because the code
compressor sees them and combines instruction pairs to use them.
---

diff --git a/v7/src/compiler/machines/bobcat/make.scm-68040 b/v7/src/compiler/machines/bobcat/make.scm-68040
index dd00844e7..62c2a1ec7 100644
--- a/v7/src/compiler/machines/bobcat/make.scm-68040
+++ b/v7/src/compiler/machines/bobcat/make.scm-68040
@@ -1,6 +1,6 @@
 #| -*-Scheme-*-
 
-$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/compiler/machines/bobcat/make.scm-68040,v 4.58 1989/11/02 08:08:54 cph Exp $
+$Header: /Users/cph/tmp/foo/mit-scheme/mit-scheme/v7/src/compiler/machines/bobcat/make.scm-68040,v 4.59 1989/11/15 02:48:07 cph Exp $
 
 Copyright (c) 1988, 1989 Massachusetts Institute of Technology
 
@@ -41,4 +41,4 @@ MIT in each case. |#
 	    ((package/reference (find-package name) 'INITIALIZE-PACKAGE!)))
 	  '((COMPILER MACROS)
 	    (COMPILER DECLARATIONS)))
-(add-system! (make-system "Liar (Motorola MC68020)" 4 58 '()))
\ No newline at end of file
+(add-system! (make-system "Liar (Motorola MC68020)" 4 59 '()))
\ No newline at end of file