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#! /bin/sh -e
# DP: 2003-04-07 Roman Zippel <zippel@linux-m68k.org>
# DP:
# DP: * gcc/final.c (alter_subreg): Adjust stack offset for a paradoxical
# DP: SUBREG, when it's pushed on the stack.
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
;;
-unpatch)
patch $pdir -f --no-backup-if-mismatch -R -p0 < $0
;;
*)
echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
exit 1
esac
exit 0
diff -u -p -r1.241.2.4 final.c
--- gcc/final.c 24 May 2002 21:26:50 -0000 1.241.2.4
+++ gcc/final.c 3 Apr 2003 22:55:06 -0000
@@ -2738,7 +2738,15 @@ alter_subreg (xp)
/* simplify_subreg does not remove subreg from volatile references.
We are required to. */
if (GET_CODE (y) == MEM)
- *xp = adjust_address (y, GET_MODE (x), SUBREG_BYTE (x));
+ {
+ register int offset = SUBREG_BYTE (x);
+
+ if (BYTES_BIG_ENDIAN)
+ if (GET_MODE_SIZE (GET_MODE (x)) > GET_MODE_SIZE (GET_MODE (y)))
+ offset -= GET_MODE_SIZE (GET_MODE (x)) - GET_MODE_SIZE (GET_MODE (y));
+
+ *xp = adjust_address (y, GET_MODE (x), offset);
+ }
else
{
rtx new = simplify_subreg (GET_MODE (x), y, GET_MODE (y),
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