expr.c (emit_move_change_mode): Always adjust addresses, not just during reload.

	* expr.c (emit_move_change_mode): Always adjust addresses, not
	just during reload.  Copy replacements only during reload.
	(emit_move_insn_1): Move MODE_DECIMAL_FLOAT modes by invoking
	emit_move_via_integer.

From-SVN: r109845

gcc/ChangeLog

+2006-01-18  Ben Elliston  <bje@au.ibm.com>	
+
+	* expr.c (emit_move_change_mode): Always adjust addresses, not
+	just during reload.  Copy replacements only during reload.
+	(emit_move_insn_1): Move MODE_DECIMAL_FLOAT modes by invoking
+	emit_move_via_integer.
+
 2006-01-17  Shantonu Sen  <ssen@opendarwin.org>
 
 	* Makefile.in (check-%, check-consistency): Use $${srcdir}

gcc/expr.c

 /* Convert tree expression to rtl instructions, for GNU compiler.
    Copyright (C) 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-   2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+   2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation,
+   Inc.
 
 This file is part of GCC.
 
@@ -2783,19 +2784,21 @@ emit_move_change_mode (enum machine_mode new_mode,
 {
   rtx ret;
 
-  if (reload_in_progress && MEM_P (x))
+  if (MEM_P (x))
     {
-      /* We can't use gen_lowpart here because it may call change_address
-	 which is not appropriate if we were called when a reload was in
-	 progress.  We don't have to worry about changing the address since
-	 the size in bytes is supposed to be the same.  Copy the MEM to
-	 change the mode and move any substitutions from the old MEM to
-	 the new one.  */
-
+      /* We don't have to worry about changing the address since the
+	 size in bytes is supposed to be the same.  */
+      if (reload_in_progress)
+	{
+	  /* Copy the MEM to change the mode and move any
+	     substitutions from the old MEM to the new one.  */
 	  ret = adjust_address_nv (x, new_mode, 0);
 	  copy_replacements (x, ret);
 	}
       else
+	ret = adjust_address (x, new_mode, 0);
+    }
+  else
     {
       /* Note that we do want simplify_subreg's behavior of validating
 	 that the new mode is ok for a hard register.  If we were to use
@@ -3128,6 +3131,17 @@ emit_move_insn_1 (rtx x, rtx y)
   if (COMPLEX_MODE_P (mode))
     return emit_move_complex (mode, x, y);
 
+  if (GET_MODE_CLASS (mode) == MODE_DECIMAL_FLOAT)
+    {
+      rtx result = emit_move_via_integer (mode, x, y, true);
+
+      /* If we can't find an integer mode, use multi words.  */
+      if (result)
+	return result;
+      else
+	return emit_move_multi_word (mode, x, y);
+    }
+
   if (GET_MODE_CLASS (mode) == MODE_CC)
     return emit_move_ccmode (mode, x, y);