r137345 - in /trunk/gcc: ChangeLog bitmap.c bit...

[rguenth@gcc.gnu.org]

Author: rguenth
Date: Wed Jul  2 08:07:41 2008
New Revision: 137345

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=137345
Log:
2008-07-02  Richard Guenther  <rguenther@suse.de>

	* bitmap.h (bitmap_set_bit): Return bool.
	(bitmap_clear_bit): Likewise.
	* bitmap.c (bitmap_set_bit): Return if the bit changed.  Only
	write to the bitmap if it would.
	(bitmap_clear_bit): Likewise.
	* tree-ssa-structalias.c (add_implicit_graph_edge): Use
	bitmap_set_bit return value.
	(add_pred_graph_edge): Likewise.
	(add_graph_edge): Likewise.
	(do_sd_constraint): Likewise.
	(do_ds_constraint): Likewise.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/bitmap.c
    trunk/gcc/bitmap.h
    trunk/gcc/tree-ssa-structalias.c