[Bug target/115475] AArch64 should define __ARM_FEATURE_SVE_BF16 when appropriate

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115475

--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-13 branch has been updated by Kyrylo Tkachov
<ktkachov@gcc.gnu.org>:

https://gcc.gnu.org/g:40d54856c1189ab6125d3eeb064df25082dd0e50

commit r13-8891-g40d54856c1189ab6125d3eeb064df25082dd0e50
Author: Kyrylo Tkachov <ktkachov@nvidia.com>
Date:   Fri Jun 28 13:22:37 2024 +0530

    aarch64: PR target/115475 Implement missing __ARM_FEATURE_SVE_BF16 macro

    The ACLE requires __ARM_FEATURE_SVE_BF16 to be enabled when SVE and BF16
    and the associated intrinsics are available.
    GCC does support the required intrinsics for TARGET_SVE_BF16 so define
    this macro too.

    Bootstrapped and tested on aarch64-none-linux-gnu.

    gcc/

            PR target/115475
            * config/aarch64/aarch64-c.cc (aarch64_update_cpp_builtins):
            Define __ARM_FEATURE_SVE_BF16 for TARGET_SVE_BF16.

    gcc/testsuite/

            PR target/115475
            * gcc.target/aarch64/acle/bf16_sve_feature.c: New test.

    Signed-off-by: Kyrylo Tkachov <ktkachov@nvidia.com>
    (cherry picked from commit 6492c7130d6ae9992298fc3d072e2589d1131376)