------- Additional Comments From law at redhat dot com 2005-03-31 18:00 -------
Subject: Re: [PR tree-optimization/20640] add phi args to dests of
dce-redirected edges
On Thu, 2005-03-31 at 05:26 -0300, Alexandre Oliva wrote:
> On Mar 31, 2005, Alexandre Oliva <[EMAIL PROTECTED]> wrote:
[ ... ]
> Anyway, how does this patch look?
> Index: gcc/ChangeLog
from Alexandre Oliva <[EMAIL PROTECTED]>
PR tree-optimization/20640
* tree-ssa-dce.c (remove_dead_stmt): Don't redirect edge to
post-dominator if it has phi nodes.
(eliminate_unnecessary_stmts): Remove dead phis in all blocks
before dead statements.
BTW, if you want to go forward with this version, it looks OK to me
assuming it passes bootstrapping and regression testing.
Jeff
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20640
