r192526 - in /trunk/gcc: ChangeLog df-problems....

[steven@gcc.gnu.org]

Author: steven
Date: Wed Oct 17 06:15:38 2012
New Revision: 192526

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=192526
Log:
	* df-problems.c (df_kill_notes): Split up in two functions.
	(df_remove_dead_and_unused_notes): New function, first half of
	df_kill notes to remove all REG_DEAD and REG_UNUSED notes.
	(df_remove_dead_eq_notes): New function, second half of df_kill_notes
	to remove REG_EQUAL and REG_EQUIV notes referring to dead registers.
	(df_note_bb_compute): Call df_remove_dead_and_unused_notes instead
	of df_kill_notes.  Call df_remove_dead_eq_notes after processing insn.

	* web.c (web): Re-add DF_RD_PRUNE_DEAD_DEFS;


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/df-problems.c
    trunk/gcc/web.c