[PATCH] lto: pass through -funwind-tables and -fasynchronous-unwind-tables

[Andreas Schwab]

On Jan 18 2023, Jakub Jelinek wrote:

> On Wed, Jan 18, 2023 at 12:25:11PM +0100, Andreas Schwab via Gcc-patches wrote:
>> On Jan 18 2023, Richard Biener wrote:
>> 
>> > On Wed, Jan 18, 2023 at 11:17 AM Andreas Schwab via Gcc-patches
>> > <gcc-patches@gcc.gnu.org> wrote:
>> >>
>> >> The -funwind-tables and -fasynchronous-unwind-tables options are relevant
>> >> for the output pass, thus they need to be passed through by the lto
>> >> wrapper.
>> >
>> > They are already stored per function, and ...
>> 
>> Are they?  Are you sure you don't confuse that with -fexceptions?
>
> They clearly are:
> fasynchronous-unwind-tables
> Common Var(flag_asynchronous_unwind_tables) Optimization
> Generate unwind tables that are exact at each instruction boundary.
> and
> funwind-tables
> Common Var(flag_unwind_tables) Optimization
> Just generate unwind tables for exception handling.

How is that supposed to work then?

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
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