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Date: Wed, 18 Jan 2023 15:16:07 +0000 (UTC)
From: Michael Matz <matz@suse.de>
To: Jakub Jelinek <jakub@redhat.com>
cc: Andreas Schwab <schwab@suse.de>, gcc-patches@gcc.gnu.org, 
    Richard Biener <richard.guenther@gmail.com>, Jan Hubicka <hubicka@ucw.cz>
Subject: Re: [PATCH] lto: pass through -funwind-tables and
 -fasynchronous-unwind-tables
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Hello,

On Wed, 18 Jan 2023, Jakub Jelinek wrote:

> On Wed, Jan 18, 2023 at 04:09:08PM +0100, Andreas Schwab wrote:
> > On Jan 18 2023, Jakub Jelinek wrote:
> > 
> > > Partly OT, what is riscv not defaulting that on as well?  Does it have
> > > usable unwind info even without that option, something else?
> > 
> > The RISC-V ABI does not address this, AFAICS.
> 
> And neither do many other ABIs, still we default there to
> -fasynchronous-unwind-tables because we've decided it is a good idea.

That might or might not be, but in the context of this thread that's 
immaterial.  Doing the same as the other archs will then simply hide the 
problem on risc-v as well, instead of fixing it.


Ciao,
Michael.