rtlanal.c (strip_address_mutation): Use SUBREG_REG instead of XEXP.

2012-10-29  Vladimir Makarov  <vmakarov@redhat.com>

	* rtlanal.c (strip_address_mutation): Use SUBREG_REG instead of
	XEXP.

From-SVN: r192951

gcc/ChangeLog

+2012-10-29  Vladimir Makarov  <vmakarov@redhat.com>
+
+	* rtlanal.c (strip_address_mutation): Use SUBREG_REG instead of
+	XEXP.
+
 2012-10-29  Uros Bizjak  <ubizjak@gmail.com>
 
 	* config/i386/i386.c (ix86_decompose_address): Use simplify_gen_subreg

gcc/rtlanal.c

@@ -5464,7 +5464,7 @@ strip_address_mutations (rtx *loc, enum rtx_code *outer_code)
                && subreg_lowpart_p (*loc))
 	/* (subreg (operator ...) ...) inside and is used for mode
 	   conversion too.  */
-	loc = &XEXP (*loc, 0);
+	loc = &SUBREG_REG (*loc);
       else
 	return loc;
       if (outer_code)