public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug tree-optimization/17955] New: Perform associative optimization when it is safe
@ 2004-10-12 20:38 fjahanian at apple dot com
2004-10-13 13:43 ` [Bug tree-optimization/17955] " pinskia at gcc dot gnu dot org
2005-07-26 13:14 ` dberlin at gcc dot gnu dot org
0 siblings, 2 replies; 4+ messages in thread
From: fjahanian at apple dot com @ 2004-10-12 20:38 UTC (permalink / raw)
To: gcc-bugs
PR/17892 was filed because gcc-4.0 performs an unsafe optimization of (X*C)*C into X*(C*C).
Fix to this PR prevents certain safe transformation; such as X*2.0*2.0->X*4.0 from taking place.
This PR is to track this enhancement.
--
Summary: Perform associative optimization when it is safe
Product: gcc
Version: 4.0.0
Status: UNCONFIRMED
Severity: enhancement
Priority: P3
Component: tree-optimization
AssignedTo: roger at eyesopen dot com
ReportedBy: fjahanian at apple dot com
CC: gcc-bugs at gcc dot gnu dot org
GCC build triplet: apple-ppc-darwin
GCC host triplet: apple-ppc-darwin
GCC target triplet: apple-ppc-darwin
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17955
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/17955] Perform associative optimization when it is safe
2004-10-12 20:38 [Bug tree-optimization/17955] New: Perform associative optimization when it is safe fjahanian at apple dot com
@ 2004-10-13 13:43 ` pinskia at gcc dot gnu dot org
2005-07-26 13:14 ` dberlin at gcc dot gnu dot org
1 sibling, 0 replies; 4+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2004-10-13 13:43 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From pinskia at gcc dot gnu dot org 2004-10-13 13:43 -------
Confirmed.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Keywords| |missed-optimization
Last reconfirmed|0000-00-00 00:00:00 |2004-10-13 13:43:28
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17955
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/17955] Perform associative optimization when it is safe
2004-10-12 20:38 [Bug tree-optimization/17955] New: Perform associative optimization when it is safe fjahanian at apple dot com
2004-10-13 13:43 ` [Bug tree-optimization/17955] " pinskia at gcc dot gnu dot org
@ 2005-07-26 13:14 ` dberlin at gcc dot gnu dot org
1 sibling, 0 replies; 4+ messages in thread
From: dberlin at gcc dot gnu dot org @ 2005-07-26 13:14 UTC (permalink / raw)
To: gcc-bugs
--
Bug 17955 depends on bug 21445, which changed state.
Bug 21445 Summary: [meta-bug] we need a reassociate pass
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21445
What |Old Value |New Value
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17955
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Bug tree-optimization/17955] Perform associative optimization when it is safe
[not found] <bug-17955-7508@http.gcc.gnu.org/bugzilla/>
@ 2010-07-20 14:02 ` steven at gcc dot gnu dot org
0 siblings, 0 replies; 4+ messages in thread
From: steven at gcc dot gnu dot org @ 2010-07-20 14:02 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from steven at gcc dot gnu dot org 2010-07-20 14:02 -------
No test case. Nothing to do here.
--
steven at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |INVALID
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17955
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2010-07-20 14:02 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-10-12 20:38 [Bug tree-optimization/17955] New: Perform associative optimization when it is safe fjahanian at apple dot com
2004-10-13 13:43 ` [Bug tree-optimization/17955] " pinskia at gcc dot gnu dot org
2005-07-26 13:14 ` dberlin at gcc dot gnu dot org
[not found] <bug-17955-7508@http.gcc.gnu.org/bugzilla/>
2010-07-20 14:02 ` steven at gcc dot gnu dot org
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).