r216575 - in /trunk/gcc: ChangeLog fold-const.c...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Thu Oct 23 08:25:55 2014
New Revision: 216575

URL: https://gcc.gnu.org/viewcvs?rev=216575&root=gcc&view=rev
Log:
2014-10-22  Richard Biener  <rguenther@suse.de>

	* fold-const.c (fold_binary_loc): Preserve side-effects of
	X - X when simplifying to 0.
	* stor-layout.c (finish_bitfield_representative): Strip
	side-effects of evaluating the difference of two DECL_FIELD_OFFSET.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/fold-const.c
    trunk/gcc/stor-layout.c