r116972 - in /trunk/gcc: ChangeLog config/bfin/...

[bernds@gcc.gnu.org]

Author: bernds
Date: Fri Sep 15 14:41:43 2006
New Revision: 116972

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=116972
Log:
	* config/bfin/bfin.c (struct loop_info): New members block_bitmap and
	bad.
	(struct loop_work and related VEC declarations): Delete.
	(bfin_dump_loops): Print out new member bad.
	(bfin_bb_in_loop): Use plain bitmap test.  Don't recurse.
	(bfin_scan_loop): Don't recurse.
	(bfin_optimize_loop): Don't use a loop depth of -1 to indicate bad
	loops.  No longer need to update outer loops if the current one is
	found bad.  Move some validitiy checks to bfin_discover_loop.
	(bfin_discover_loop): New function, mostly split from bfin_reorg_loops,
	but changed not to check for nesting.  Also changed to use the new bad
	flag.
	(bfin_reorg_loops): Use bfin_discover_loop to find single loops one at a
	time.  Use bitmap based test to discover loop nesting.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/bfin/bfin.c