From: Andreas Schwab <schwab@suse.de>
To: Michael Matz <matz@suse.de>
Cc: gcc-patches@gcc.gnu.org, Jakub Jelinek <jakub@redhat.com>,
Richard Biener <richard.guenther@gmail.com>,
Jan Hubicka <hubicka@ucw.cz>
Subject: Re: [PATCH] lto: pass through -funwind-tables and -fasynchronous-unwind-tables
Date: Wed, 18 Jan 2023 15:14:01 +0100 [thread overview]
Message-ID: <mvmilh4x74m.fsf@suse.de> (raw)
In-Reply-To: <alpine.LSU.2.20.2301181328520.30340@wotan.suse.de> (Michael Matz's message of "Wed, 18 Jan 2023 14:03:42 +0000 (UTC)")
On Jan 18 2023, Michael Matz wrote:
> So, it's quite clear that the option merging algorithm related to all this
> is somewhat broken, the global (or per function, or whatever)
> -funwind-tables option from hello.o doesn't make it correctly into the
> output (when -g is there). Adding -fexception makes it work because then
> the functions will have personalities and on LTO-read-in _that_ will
> implicitely enable funwind-tables again (which should have been enabled
> already by the option-read-in).
My guess is that flag_unwind_tables is not yet set when .cfi_sections is
emitted (which is done by dwarf2out_assembly_start before compile starts).
--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."
next prev parent reply other threads:[~2023-01-18 14:14 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-18 10:16 Andreas Schwab
2023-01-18 11:05 ` Richard Biener
2023-01-18 11:25 ` Andreas Schwab
2023-01-18 11:31 ` Jakub Jelinek
2023-01-18 12:30 ` Andreas Schwab
2023-01-18 12:35 ` Jakub Jelinek
2023-01-18 12:39 ` Andreas Schwab
2023-01-18 12:47 ` Jakub Jelinek
2023-01-18 13:00 ` Andreas Schwab
2023-01-18 14:03 ` Michael Matz
2023-01-18 14:14 ` Andreas Schwab [this message]
2023-01-18 14:25 ` Jakub Jelinek
2023-01-18 15:11 ` Andreas Schwab
2023-01-18 14:27 ` Jakub Jelinek
2023-01-18 15:09 ` Andreas Schwab
2023-01-18 15:11 ` Jakub Jelinek
2023-01-18 15:16 ` Michael Matz
2023-01-18 15:19 ` Jakub Jelinek
2023-01-18 15:32 ` Michael Matz
2023-01-18 16:09 ` Andreas Schwab
2023-01-18 16:25 ` Jan Hubicka
2023-01-18 16:28 ` Jakub Jelinek
2023-01-18 15:07 ` Jan Hubicka
2023-01-19 7:14 ` Richard Biener
2023-01-18 13:36 ` Andreas Schwab
2023-01-25 13:16 ` Richard Biener
2023-01-25 13:50 ` Andreas Schwab
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