This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug middle-end/33699] [4.1/4.2/4.3 regression], missing optimization on const addr area store
- From: "steven at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 7 Jan 2008 18:24:01 -0000
- Subject: [Bug middle-end/33699] [4.1/4.2/4.3 regression], missing optimization on const addr area store
- References: <bug-33699-1573@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from steven at gcc dot gnu dot org 2008-01-07 18:24 -------
This is related to some work done in the past for auto-increment addressing
modes (even though there are no auto-inc/dec modes in the reporter's assembly).
See one of Joern's old patches:
http://gcc.gnu.org/ml/gcc-patches/2005-02/msg01612.html
Look at the comment before optimize_related_value() to understand what this
patch is supposed to achieve. Let's not talk about how it achieved this -- it
suffices to say that the patch is not in the trunk -- but we really do need a
pass over RTL to optimize this kind of thing.
--
steven at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed|2007-12-26 01:33:50 |2008-01-07 18:24:00
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33699