public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug target/39677] AMD Opteron E needs workaround for lock erratum
[not found] <bug-39677-4@http.gcc.gnu.org/bugzilla/>
@ 2021-07-19 18:28 ` pinskia at gcc dot gnu.org
0 siblings, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2021-07-19 18:28 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=39677
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |INVALID
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So reading https://www.amd.com/system/files/TechDocs/25759.pdf and errata #147,
the errata only occurs if lock is not there:
The erratum will not occur if there is a LOCK prefix on the read-modify-write
instruction.
And GCC never emits a cmpxchg without a lock prefix so there is nothing to be
done.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug target/39677] AMD Opteron E needs workaround for lock erratum
2009-04-07 13:36 [Bug middle-end/39677] New: " bonzini at gnu dot org
2009-10-13 1:07 ` [Bug target/39677] " rth at gcc dot gnu dot org
@ 2009-12-07 16:12 ` rth at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: rth at gcc dot gnu dot org @ 2009-12-07 16:12 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from rth at gcc dot gnu dot org 2009-12-07 16:12 -------
Not working on it any longer.
--
rth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|rth at gcc dot gnu dot org |unassigned at gcc dot gnu
| |dot org
Status|ASSIGNED |NEW
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39677
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug target/39677] AMD Opteron E needs workaround for lock erratum
2009-04-07 13:36 [Bug middle-end/39677] New: " bonzini at gnu dot org
@ 2009-10-13 1:07 ` rth at gcc dot gnu dot org
2009-12-07 16:12 ` rth at gcc dot gnu dot org
1 sibling, 0 replies; 3+ messages in thread
From: rth at gcc dot gnu dot org @ 2009-10-13 1:07 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from rth at gcc dot gnu dot org 2009-10-13 01:07 -------
Not an openmp bug; we've got to make the change for all code gcc generates.
--
rth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
AssignedTo|unassigned at gcc dot gnu |rth at gcc dot gnu dot org
|dot org |
Status|NEW |ASSIGNED
Component|middle-end |target
Keywords|openmp |
Last reconfirmed|2009-04-07 13:42:25 |2009-10-13 01:07:32
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39677
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2021-07-19 18:28 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
[not found] <bug-39677-4@http.gcc.gnu.org/bugzilla/>
2021-07-19 18:28 ` [Bug target/39677] AMD Opteron E needs workaround for lock erratum pinskia at gcc dot gnu.org
2009-04-07 13:36 [Bug middle-end/39677] New: " bonzini at gnu dot org
2009-10-13 1:07 ` [Bug target/39677] " rth at gcc dot gnu dot org
2009-12-07 16:12 ` rth 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).