r150893 - in /branches/var-tracking-assignments...

[aoliva@gcc.gnu.org]

Author: aoliva
Date: Tue Aug 18 19:10:05 2009
New Revision: 150893

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=150893
Log:
* regrenaem.c (regrename_optimize): Drop last.  Don't count debug
insns as uses.  Don't reject change because of debug insn.
(do_replace): Reject DEBUG_INSN as chain starter.  Take base_regno
from the chain starter, and check for inexact matches in
DEBUG_INSNS.
(scan_rtx_reg): Accept inexact matches in DEBUG_INSNs.
(build_def_use): Simplify and fix the marking of DEBUG_INSNs.

Modified:
    branches/var-tracking-assignments-4_4-branch/gcc/ChangeLog.vta
    branches/var-tracking-assignments-4_4-branch/gcc/regrename.c