From: Michael Meissner <meissner@linux.ibm.com>
To: Michael Meissner <meissner@linux.ibm.com>,
Segher Boessenkool <segher@kernel.crashing.org>,
gcc-patches@gcc.gnu.org, "Kewen.Lin" <linkw@linux.ibm.com>,
David Edelsohn <dje.gcc@gmail.com>,
Peter Bergner <bergner@linux.ibm.com>,
Will Schmidt <will_schmidt@vnet.ibm.com>
Subject: Re: [PATCH 0/6] PowerPC Dense Math prelimary support (-mcpu=future)
Date: Sun, 29 Jan 2023 21:52:38 -0500 [thread overview]
Message-ID: <Y9cw9mQCZBX+3urq@toto.the-meissners.org> (raw)
In-Reply-To: <Y9TOwPFZeXnObV9A@toto.the-meissners.org>
On Sat, Jan 28, 2023 at 02:29:04AM -0500, Michael Meissner wrote:
> On Fri, Jan 27, 2023 at 01:59:00PM -0600, Segher Boessenkool wrote:
> > > There is one bug that I noticed. When you use the full DMR instruction the
> > > constant copy propagation patch issues internal errors. I believe this is due
> > > to the CCP pass not handling opaque types cleanly enough, and it only shows up
> > > in larger types. I would like to get these patches committed, and then work
> > > the maintainers of the CCP to fix the problem.
> >
> > Erm. If the compiler ICEs, we can not include this code. But hopefully
> > you mean something else?
>
> I realize we can't include the code for final release. But as a temporary
> measure I was hoping we would put in the code, we could allow somebody more
> familar with ccp to debug it. Then if there were changes needed in the PowerPC
> back end, we could make them, once ccp was fixed.
>
> But that is a moot point, ccp no longer dies with the code, so I have removed
> the comment and the no tree ccp option in the next set of patches.
Unfortunately, while it worked on my x86 as a cross compiler, when I did the
builds for real, it is a problem, so I will need to look into it.
--
Michael Meissner, IBM
PO Box 98, Ayer, Massachusetts, USA, 01432
email: meissner@linux.ibm.com
next prev parent reply other threads:[~2023-01-30 2:52 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-10 2:43 Michael Meissner
2022-11-10 2:44 ` [PATCH 1/6] PowerPC: Add -mcpu=future Michael Meissner
2022-11-11 21:07 ` Peter Bergner
2023-01-20 21:05 ` Ping: " Michael Meissner
2023-01-27 20:00 ` Segher Boessenkool
2022-11-10 2:45 ` [PATCH 2/6] PowerPC: Make -mcpu=future enable -mblock-ops-vector-pair Michael Meissner
2023-01-20 21:07 ` Ping: " Michael Meissner
2022-11-10 2:46 ` [PATCH 3/6] PowerPC: Add support for accumulators in DMR registers Michael Meissner
2023-01-20 21:08 ` Ping: " Michael Meissner
2022-11-10 2:50 ` [PATCH 4/6] PowerPC: Make MMA insns support " Michael Meissner
2023-01-20 21:10 ` Ping: " Michael Meissner
2022-11-10 2:51 ` [PATCH 5/6] PowerPC: Switch to dense math names for all MMA operations Michael Meissner
2023-01-20 21:11 ` Ping: " Michael Meissner
2022-11-10 2:52 ` [PATCH 6/6] PowerPC: Add support for 1,024 bit DMR registers Michael Meissner
2023-01-20 21:12 ` Ping: " Michael Meissner
2022-11-12 5:07 ` [PATCH 7] PowerPC: Add -mcpu=future saturating subtract built-ins Michael Meissner
2023-01-20 21:13 ` Ping: " Michael Meissner
2022-11-12 5:10 ` [PATCH 8] PowerPC: Support load/store vector with right length Michael Meissner
2023-01-20 21:15 ` Patch: " Michael Meissner
2023-01-27 19:59 ` [PATCH 0/6] PowerPC Dense Math prelimary support (-mcpu=future) Segher Boessenkool
2023-01-28 7:29 ` Michael Meissner
2023-01-30 2:52 ` Michael Meissner [this message]
2023-02-01 3:31 ` Michael Meissner
2023-02-02 0:05 ` Segher Boessenkool
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