From: Roman Zippel <zippel@linux-m68k.org>
Date: Mon, 27 Aug 2001 22:43:37 +0000 (+0000)
Subject: expmed.c (store_bit_field): Ignore adjustment to bitpos and use bitnum to decide... 
X-Git-Tag: prereleases/libstdc++-3.0.95~2402
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f21bdd05bdbac16e29fbc663731f6dfacb74dbd8;p=thirdparty%2Fgcc.git

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
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 42e7883a9472..3d64ee7950a3 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+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.
diff --git a/gcc/expmed.c b/gcc/expmed.c
index 7cbc8573f7d6..af5e56fdd757 100644
--- a/gcc/expmed.c
+++ b/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)
 	{