Re: [PATCH] or1k: Fix ICE in libgcc caused by recent validate_subreg changes

[Stafford Horne <shorne@gmail.com>]

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