OK, thanks for this :)
On Fri, Jan 27, 2023 at 12:40 AM Andreas Schwab via Gcc-patches <
gcc-patches@gcc.gnu.org> wrote:
> This follows the example of aarch64.
>
> gcc/:
> * common/config/riscv/riscv-common.cc
> (riscv_option_optimization_table)
> [TARGET_DEFAULT_ASYNC_UNWIND_TABLES]: Enable
> -fasynchronous_unwind_tables and -funwind-tables.
> * config.gcc (riscv*-*-linux*): Define
> TARGET_DEFAULT_ASYNC_UNWIND_TABLES.
> ---
> gcc/common/config/riscv/riscv-common.cc | 4
> gcc/config.gcc | 1 +
> 2 files changed, 5 insertions(+)
>
> diff --git a/gcc/common/config/riscv/riscv-common.cc
> b/gcc/common/config/riscv/riscv-common.cc
> index 2e3116e7673..616e2f897b9 100644
> --- a/gcc/common/config/riscv/riscv-common.cc
> +++ b/gcc/common/config/riscv/riscv-common.cc
> @@ -1756,6 +1756,10 @@ static const struct default_options
> riscv_option_optimization_table[] =
>{
> { OPT_LEVELS_1_PLUS, OPT_fsection_anchors, NULL, 1 },
> { OPT_LEVELS_2_PLUS, OPT_free, NULL, 1 },
> +#if TARGET_DEFAULT_ASYNC_UNWIND_TABLES == 1
> +{ OPT_LEVELS_ALL, OPT_fasynchronous_unwind_tables, NULL, 1 },
> +{ OPT_LEVELS_ALL, OPT_funwind_tables, NULL, 1},
> +#endif
> { OPT_LEVELS_NONE, 0, NULL, 0 }
>};
>
> diff --git a/gcc/config.gcc b/gcc/config.gcc
> index 89f56047cfe..744b46fb3b0 100644
> --- a/gcc/config.gcc
> +++ b/gcc/config.gcc
> @@ -2417,6 +2417,7 @@ riscv*-*-linux*)
> *) echo "Unknown value for enable_multilib"; exit 1
> esac
> tmake_file="${tmake_file} riscv/t-riscv riscv/t-linux"
> + tm_defines="${tm_defines} TARGET_DEFAULT_ASYNC_UNWIND_TABLES=1"
> gnu_ld=yes
> gas=yes
> case $target in
> --
> 2.39.1
>
>
> --
> Andreas Schwab, SUSE Labs, sch...@suse.de
> GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
> "And now for something completely different."
>
