r154944 - in /trunk/gcc: ChangeLog regrename.c

[bernds@gcc.gnu.org]

Author: bernds
Date: Thu Dec  3 12:58:30 2009
New Revision: 154944

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=154944
Log:
	PR middle-end/42202
	* regrename.c (live_in_chains): New variable.
	(verify_reg_tracked): New static function.
	(scan_rtx_reg): Update live_in_chains.
	(scan_rtx): Only promote sets in COND_EXEC to OP_INOUT if
	we're already tracking the reg.
	(build_def_use): Likewise.  Initialize live_in_chains.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/regrename.c