https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
H.J. Lu changed:
What|Removed |Added
CC||luto at kernel dot org
--- Comment #13 from
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
H.J. Lu changed:
What|Removed |Added
Status|WAITING |RESOLVED
Resolution|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
--- Comment #11 from hjl at gcc dot gnu.org ---
Author: hjl
Date: Mon Apr 2 12:09:48 2018
New Revision: 259007
URL: https://gcc.gnu.org/viewcvs?rev=259007=gcc=rev
Log:
i386: Enable AVX/AVX512 features only if supported by OSXSAVE
Enable AVX
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
--- Comment #10 from hjl at gcc dot gnu.org ---
Author: hjl
Date: Mon Apr 2 12:03:16 2018
New Revision: 259006
URL: https://gcc.gnu.org/viewcvs?rev=259006=gcc=rev
Log:
i386: Enable AVX/AVX512 features only if supported by OSXSAVE
Enable AVX
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
--- Comment #9 from hjl at gcc dot gnu.org ---
Author: hjl
Date: Thu Mar 29 13:14:06 2018
New Revision: 258954
URL: https://gcc.gnu.org/viewcvs?rev=258954=gcc=rev
Log:
i386: Enable AVX/AVX512 features only if supported by OSXSAVE
Enable AVX
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
--- Comment #8 from Uroš Bizjak ---
Comment on attachment 43793
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43793
A patch
>+ if ((ecx & bit_OSXSAVE))
>+{
>+ /* Check if XMM state and YMM state are saved. */
>+ unsigned
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
Uroš Bizjak changed:
What|Removed |Added
Target Milestone|--- |6.5
Severity|enhancement
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
--- Comment #6 from Uroš Bizjak ---
(In reply to Richard Biener from comment #2)
> I think this is on purpose and unlikely to change.
No, __builtin_cpu_supports is used to enable parts that are able to execute
relevant instructions. So, HJ's
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
--- Comment #5 from Nathaniel J. Smith ---
Julian, are you able to test the patch? I don't have a reproduction setup
currently...
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
H.J. Lu changed:
What|Removed |Added
Status|NEW |WAITING
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
H.J. Lu changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
H.J. Lu changed:
What|Removed |Added
Assignee|unassigned at gcc dot gnu.org |hjl.tools at gmail dot
com
---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
--- Comment #3 from Nathaniel J. Smith ---
We're using it exactly like the docs recommend. What on earth is
__builtin_cpu_supports for, if not to tell you whether you can use a given
feature?
If this is by design, than at the very least the
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
Richard Biener changed:
What|Removed |Added
Target||x86_64-*-*, i?86-*-*
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85100
Nathaniel J. Smith changed:
What|Removed |Added
CC||njs at pobox dot com
--- Comment
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