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From: Peter Wemm <peter@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
Subject: PERFORCE change 30873 for review
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http://perforce.freebsd.org/chv.cgi?CH=30873

Change 30873 by peter@peter_daintree on 2003/05/09 13:14:36

	Fix for vfprintf.c ICE from rth@redhat.com
	  * config/i386/i386.c (ix86_split_long_move): Fix base register
	  mode for XFmode splits for TARGET_64BIT.
	In the queue for gcc-3.3.1.

Affected files ...

.. //depot/projects/hammer/contrib/gcc/config/i386/i386.c#5 edit

Differences ...

==== //depot/projects/hammer/contrib/gcc/config/i386/i386.c#5 (text+ko) ====

@@ -8823,15 +8823,24 @@
 	 Do an lea to the last part and use only one colliding move.  */
       else if (collisions > 1)
 	{
+	  rtx base;
+
 	  collisions = 1;
-	  emit_insn (gen_rtx_SET (VOIDmode, part[0][nparts - 1],
-				  XEXP (part[1][0], 0)));
-	  part[1][0] = change_address (part[1][0],
-				       TARGET_64BIT ? DImode : SImode,
-				       part[0][nparts - 1]);
-	  part[1][1] = adjust_address (part[1][0], VOIDmode, UNITS_PER_WORD);
+
+	  base = part[0][nparts - 1];
+
+	  /* Handle the case when the last part isn't valid for lea.
+	     Happens in 64-bit mode storing the 12-byte XFmode.  */
+	  if (GET_MODE (base) != Pmode)
+	    base = gen_rtx_REG (Pmode, REGNO (base));
+
+	  emit_insn (gen_rtx_SET (VOIDmode, base, XEXP (part[1][0], 0)));
+	  part[1][0] = replace_equiv_address (part[1][0], base);
+	  part[1][1] = replace_equiv_address (part[1][1],
+				      plus_constant (base, UNITS_PER_WORD));
 	  if (nparts == 3)
-	    part[1][2] = adjust_address (part[1][0], VOIDmode, 8);
+	    part[1][2] = replace_equiv_address (part[1][2],
+				      plus_constant (base, 8));
 	}
     }