Don't set misaligned_prologue_used twice

	* config/i386/i386.c (ix86_expand_set_or_movmem): Don't set
	misaligned_prologue_used when it has been set.

From-SVN: r204512

gcc/ChangeLog

+2013-11-07  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* config/i386/i386.c (ix86_expand_set_or_movmem): Don't set
+	misaligned_prologue_used when it has been set.
+
 2013-11-07  Yury Gribov  <y.gribov@samsung.com>
 	    Jakub Jelinek  <jakub@redhat.com>
 

gcc/config/i386/i386.c

@@ -23796,7 +23796,6 @@ ix86_expand_set_or_movmem (rtx dst, rtx src, rtx count_exp, rtx val_exp,
   if (misaligned_prologue_used)
     {
       /* Misaligned move prologue handled small blocks by itself.  */
-      misaligned_prologue_used = true;
       expand_set_or_movmem_prologue_epilogue_by_misaligned_moves
 	   (dst, src, &destreg, &srcreg,
 	    move_mode, promoted_val, vec_promoted_val,