[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 #3 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Kyrylo Tkachov <ktkachov@gcc.gnu.org>:

https://gcc.gnu.org/g:6492c7130d6ae9992298fc3d072e2589d1131376

commit r15-1813-g6492c7130d6ae9992298fc3d072e2589d1131376
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>