On Mon, 27 Jan 2025 at 10:55, Andreas Schwab <[email protected]> wrote:
>
> RISC-V only gained support for bfloat16_t after gcc 14. Passes
> libstdc++/check_abi on {x86_64,aarch64,ppc64le,riscv64,s390x}-suse-linux.
OK, thanks.
>
> PR libstdc++/118563
> * testsuite/util/testsuite_abi.cc (check_version): Add
> CXXABI_1.3.16.
> * config/abi/pre/gnu.ver (CXXABI_1.3.14) [__riscv]: Exclude
> typeinfo for bfloat16_t.
> (CXXABI_1.3.16) [__riscv]: Add it here.
> ---
> libstdc++-v3/config/abi/pre/gnu.ver | 23 ++++++++++++++++----
> libstdc++-v3/testsuite/util/testsuite_abi.cc | 1 +
> 2 files changed, 20 insertions(+), 4 deletions(-)
>
> diff --git a/libstdc++-v3/config/abi/pre/gnu.ver
> b/libstdc++-v3/config/abi/pre/gnu.ver
> index f7641974ec4..84ce874fe03 100644
> --- a/libstdc++-v3/config/abi/pre/gnu.ver
> +++ b/libstdc++-v3/config/abi/pre/gnu.ver
> @@ -2852,10 +2852,15 @@ CXXABI_1.3.13 {
> CXXABI_1.3.14 {
>
> # typeinfo for _Float{16,32,64,128,32x,64x,128x} and
> - # __bf16
> - _ZTIDF[0-9]*[_bx];
> - _ZTIPDF[0-9]*[_bx];
> - _ZTIPKDF[0-9]*[_bx];
> + # __bf16/bfloat16_t
> + _ZTIDF[0-9]*[_x];
> + _ZTIPDF[0-9]*[_x];
> + _ZTIPKDF[0-9]*[_x];
> +#ifndef __riscv
> + _ZTIDF16b;
> + _ZTIPDF16b;
> + _ZTIPKDF16b;
> +#endif
> _ZTIu6__bf16;
> _ZTIPu6__bf16;
> _ZTIPKu6__bf16;
> @@ -2869,6 +2874,16 @@ CXXABI_1.3.15 {
>
> } CXXABI_1.3.14;
>
> +CXXABI_1.3.16 {
> +
> +#ifdef __riscv
> + _ZTIDF16b;
> + _ZTIPDF16b;
> + _ZTIPKDF16b;
> +#endif
> +
> +} CXXABI_1.3.15;
> +
> # Symbols in the support library (libsupc++) supporting transactional memory.
> CXXABI_TM_1 {
>
> diff --git a/libstdc++-v3/testsuite/util/testsuite_abi.cc
> b/libstdc++-v3/testsuite/util/testsuite_abi.cc
> index dcf5b1a4e0b..0d6080fb92c 100644
> --- a/libstdc++-v3/testsuite/util/testsuite_abi.cc
> +++ b/libstdc++-v3/testsuite/util/testsuite_abi.cc
> @@ -237,6 +237,7 @@ check_version(symbol& test, bool added)
> known_versions.push_back("CXXABI_1.3.13");
> known_versions.push_back("CXXABI_1.3.14");
> known_versions.push_back("CXXABI_1.3.15");
> + known_versions.push_back("CXXABI_1.3.16");
> known_versions.push_back("CXXABI_IEEE128_1.3.13");
> known_versions.push_back("CXXABI_TM_1");
> known_versions.push_back("CXXABI_FLOAT128");
> --
> 2.48.1
>
>
> --
> Andreas Schwab, SUSE Labs, [email protected]
> GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
> "And now for something completely different."
>
