[all-commits] [llvm/llvm-project] 7dbbb5: compiler-rt: Use FreeBSD's elf_aux_info to detect ...

[Dimitry Andric via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 7dbbb5d3a46e1526cfa126ae02a5856d7ce0fda9
      https://github.com/llvm/llvm-project/commit/7dbbb5d3a46e1526cfa126ae02a5856d7ce0fda9
  Author: Dimitry Andric <dimitry at andric.com>
  Date:   2021-11-20 (Sat, 20 Nov 2021)

  Changed paths:
    M compiler-rt/lib/builtins/cpu_model.c

  Log Message:
  -----------
  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