#! /bin/sh -e

dir=
if [ $# -eq 3 -a "$2" = '-d' ]; then
    pdir="-d $3"
    dir="$3/"
elif [ $# -ne 1 ]; then
    echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
    exit 1
fi
case "$1" in
    -patch)
        patch $pdir -f --no-backup-if-mismatch -p0 < $0
        #cd ${dir}gcc && autoconf
        ;;
    -unpatch)
        patch $pdir -f --no-backup-if-mismatch -R -p0 < $0
        #rm ${dir}gcc/configure
        ;;
    *)
        echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
        exit 1
esac
exit 0

# DP: 2003-05-15  Philip Blundell  <philb@gnu.org>
# DP: 
# DP: 	PR target/10730
# DP: 	* config/arm/arm.c (adjacent_mem_locations): Reject offsets
# DP: 	involving invalid constants.

Index: arm.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/config/arm/arm.c,v
retrieving revision 1.271
diff -u -p -r1.271 arm.c
--- gcc/config/arm/arm.c	10 May 2003 13:10:46 -0000	1.271
+++ gcc/config/arm/arm.c	14 May 2003 21:26:26 -0000
@@ -4567,6 +4571,12 @@ adjacent_mem_locations (a, b)
       else
 	reg1 = REGNO (XEXP (b, 0));
 
+      /* Don't accept any offset that will require multiple instructions to handle,
+	 since this would cause the arith_adjacentmem pattern to output an overlong
+	 sequence.  */
+      if (!const_ok_for_op (PLUS, val0) || !const_ok_for_op (PLUS, val1))
+	return 0;
+      
       return (reg0 == reg1) && ((val1 - val0) == 4 || (val0 - val1) == 4);
     }
   return 0;