https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
Andrew Pinski changed:
What|Removed |Added
Assignee|rguenth at gcc dot gnu.org |pinskia at gcc dot
gnu.org
---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
luoxhu at gcc dot gnu.org changed:
What|Removed |Added
CC||linkw at gcc dot gnu.org
---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
--- Comment #12 from Segher Boessenkool ---
But it could do just
stw r4,0(r3)
(on LE; and with a rotate first, on BE).
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
luoxhu at gcc dot gnu.org changed:
What|Removed |Added
CC||luoxhu at gcc dot gnu.org
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
--- Comment #10 from Xiong Hu XS Luo ---
(In reply to Andrew Pinski from comment #9)
> (In reply to rguent...@suse.de from comment #8)
> > On Fri, 15 Mar 2019, luoxhu at cn dot ibm.com wrote:
> >
> > >
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
--- Comment #9 from Andrew Pinski ---
(In reply to rguent...@suse.de from comment #8)
> On Fri, 15 Mar 2019, luoxhu at cn dot ibm.com wrote:
>
> > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
> >
> > Xiong Hu XS Luo changed:
> >
> >
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
--- Comment #8 from rguenther at suse dot de ---
On Fri, 15 Mar 2019, luoxhu at cn dot ibm.com wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
>
> Xiong Hu XS Luo changed:
>
>What|Removed
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
Xiong Hu XS Luo changed:
What|Removed |Added
CC||guojiufu at gcc dot gnu.org,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
--- Comment #6 from Segher Boessenkool ---
Doing an 8 byte load of something that was stored as 4 byte immediately
before will cause flushes and stalls... Yeah it could use a 4-byte load
here afaics.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
Nicholas Piggin changed:
What|Removed |Added
CC||npiggin at gmail dot com
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
--- Comment #4 from Anton Blanchard ---
Created attachment 39683
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=39683=edit
Another bitop LHS test case
Here's another issue found in the Linux kernel. Seems like this should be a
single
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
--- Comment #3 from rguenther at suse dot de ---
On Tue, 14 Jun 2016, segher at gcc dot gnu.org wrote:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
>
> --- Comment #2 from Segher Boessenkool ---
> (In reply to Richard Biener from
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71509
--- Comment #2 from Segher Boessenkool ---
(In reply to Richard Biener from comment #1)
> It looks like we didn't adjust the bitfield read paths for the mem model
> because in practice it doesn't matter and it may generate larger/slower code
>
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