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

[ktkachov at gcc dot gnu.org via Gcc-bugs]

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

            Bug ID: 115475
           Summary: AArch64 should define __ARM_FEATURE_SVE_BF16 when
                    appropriate
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ktkachov at gcc dot gnu.org
  Target Milestone: ---
            Target: aarch64

According to the ACLE:
https://github.com/ARM-software/acle/blob/main/main/acle.md#brain-16-bit-floating-point-support

GCC should define __ARM_FEATURE_SVE_BF16 when SVE and the BF16 intrinsics are
available.
GCC implements the associated intrinsics, but doesn't define the macro. Clang
does.