tree 169d64b4fe57f717d3d2a215904beec714cd1426
parent 0152f739622d40f3f05804c9a5217c849f903a89
author David Benjamin <davidben@google.com> 1690478380 -0700
committer Boringssl LUCI CQ <boringssl-scoped@luci-project-accounts.iam.gserviceaccount.com> 1690572617 +0000

Trim some redundant Arm feature detection files

cpu_arm_openbsd.c is the same as OPENSSL_STATIC_ARMCAP.
cpu_aarch64_freebsd.c is the same as cpu_aarch64_sysreg.c. (The FreeBSD
one was using the macros in their headers, but those macros expand to
the same inline assembly.)

Also send ANDROID_BAREMETAL + 32-bit Arm to OPENSSL_STATIC_ARMCAP. This
way we can remove OPENSSL_STATIC_ARMCAP from the Android baremetal build
without having to chase down constraining it to aarch64. See
b/291106677#comment6

Update-Note: This is a slight change to the OpenBSD build. Previously,
we assumed OpenBSD on 32-bit Arm implies NEON. Now, we pick it up from
the __ARM_NEON define from ACLE, i.e. whether the compiler has been told
that NEON is available. (This comes from -march or other options.) Doing
that is desirable anyway: if NEON is in your baseline, you should tell
your compiler so it can vectorize loops.

Change-Id: Icd43a2b56bb6e3f04f0fed996ae750fba65e3312
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/62066
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Bob Beck <bbe@google.com>