From: Stafford Horne <shorne@gmail.com>
To: Simon Marchi <simark@simark.ca>
Cc: GDB patches <gdb-patches@sourceware.org>,
Linux OpenRISC <linux-openrisc@vger.kernel.org>
Subject: Re: [PATCH] or1k: Fix ICE in libgcc caused by recent validate_subreg changes
Date: Mon, 9 Jun 2025 20:01:38 +0100 [thread overview]
Message-ID: <aEcvktufxzjdr95I@antec> (raw)
In-Reply-To: <ed2035f9-d5ea-4090-9d43-d6be9d40f901@simark.ca>
On Mon, Jun 09, 2025 at 02:57:46PM -0400, Simon Marchi wrote:
> On 6/9/25 2:52 PM, Stafford Horne wrote:
> > After commit eb2ea476db2 ("emit-rtl: Allow extra checks for
> > paradoxical subregs [PR119966]") paradoxical subregs or the OpenRISC
> > condition flag register (reg:BI sr_f) are no longer allowed.
> >
> > This causes and ICE in the ce1 pass which tries to get the or1k flag
> > register into an SI register, which is no longer possible.
> >
> > Adjust or1k_can_change_mode_class to allow changing the or1k flag reg to
> > SI mode which in turn allows paradoxical subregs to bre generated again.
> >
> > gcc/ChangeLog:
> >
> > PR or1k/120587
> > * config/or1k/or1k.cc (or1k_can_change_mode_class): Allow
> > changing flags mode from BI to SI to allow for paradoxical
> > subregs.
>
> Wrong mailing list I think (gcc, not gdb).
Yes sorry, I have tab completion and gdb-patches looked like gcc-patches to me.
I have resent to the correct list.
-Stafford
next prev parent reply other threads:[~2025-06-09 19:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-09 18:52 [PATCH] or1k: Fix ICE in libgcc caused by recent validate_subreg changes Stafford Horne
2025-06-09 18:57 ` Simon Marchi
2025-06-09 19:01 ` Stafford Horne [this message]
-- strict thread matches above, loose matches on Subject: below --
2025-06-09 18:59 Stafford Horne
2025-06-12 16:28 ` Stafford Horne
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