This is the mail archive of the
gcc@gcc.gnu.org
mailing list for the GCC project.
Re: Value Range Propagation Patch
- To: aj at suse dot de
- Subject: Re: Value Range Propagation Patch
- From: John Wehle <john at feith dot com>
- Date: Mon, 30 Jul 2001 15:20:32 -0400 (EDT)
- Cc: gcc at gcc dot gnu dot org
Several people have recently asked about why the Value Range Propagation Patch
hasn't been integrated into GCC. The answer is:
1) It's a large patch which requires a lot of time to review. Jeff Law
did look over some of it and provided useful feedback in addition
to raising some concerns. Toon Moene has also been helpful in
testing various versions.
2) There are concerns regarding it's effectiveness and efficiency. I've
spent some time improving both though more work remains to be done.
3) I switched off of it to do some smaller gcc projects.
Given the renewed interest in the VRP patch I'll switch back to working on
it later this week.
-- John
-------------------------------------------------------------------------
| Feith Systems | Voice: 1-215-646-8000 | Email: john@feith.com |
| John Wehle | Fax: 1-215-540-5495 | |
-------------------------------------------------------------------------