tree b02f7300495446114090b639b6bfe6d075380d3f
parent c2437e2022b9c7d938717a8c96ce98bf27778cfe
author Dimitry Andric <dimitry@andric.com> 1637406606 +0100
committer Copybara-Service <copybara-worker@google.com> 1637406976 -0800

compiler-rt: Use FreeBSD's elf_aux_info to detect AArch64 HW features

Using the out-of-line LSE atomics helpers for AArch64 on FreeBSD also
requires adding support for initializing __aarch64_have_lse_atomics
correctly. On Linux this is done with getauxval(3), on FreeBSD with
elf_aux_info(3), which has a slightly different interface.

Differential Revision: https://reviews.llvm.org/D109330

GitOrigin-RevId: 7dbbb5d3a46e1526cfa126ae02a5856d7ce0fda9