expmed.c (store_bit_field): Ignore adjustment to bitpos and use bitnum to decide…

expmed.c (store_bit_field): Ignore adjustment to bitpos and use bitnum to decide about register move.

        * expmed.c (store_bit_field): Ignore adjustment to bitpos
        and use bitnum to decide about register move.

From-SVN: r45215

gcc/ChangeLog

+2001-08-27  Roman Zippel  <zippel@linux-m68k.org>
+
+	* expmed.c (store_bit_field): Ignore adjustment to bitpos
+	and use bitnum to decide about register move.
+
 2001-08-27  Richard Henderson  <rth@redhat.com>
 
 	* genattr.c (main): Emit state_t even when not doing scheduling.

gcc/expmed.c

@@ -350,14 +350,14 @@ store_bit_field (str_rtx, bitsize, bitnum, fieldmode, value, align, total_size)
      done with a simple store.  For targets that support fast unaligned
      memory, any naturally sized, unit aligned field can be done directly.  */
      
-  if (bitsize == GET_MODE_BITSIZE (fieldmode)
+  if (bitnum == 0
+      && bitsize == GET_MODE_BITSIZE (fieldmode)
       && (GET_CODE (op0) != MEM
 	  ? (GET_MODE_SIZE (fieldmode) >= UNITS_PER_WORD
 	     || GET_MODE_SIZE (GET_MODE (op0)) == GET_MODE_SIZE (fieldmode))
 	  : (! SLOW_UNALIGNED_ACCESS (fieldmode, align)
 	     || (offset * BITS_PER_UNIT % bitsize == 0
-		 && align % GET_MODE_BITSIZE (fieldmode) == 0)))
-      && (BYTES_BIG_ENDIAN ? bitpos + bitsize == unit : bitpos == 0))
+		 && align % GET_MODE_BITSIZE (fieldmode) == 0))))
     {
       if (GET_MODE (op0) != fieldmode)
 	{