[all-commits] [llvm/llvm-project] 71ef54: [darwin] switch blocking mutex from osspinlock to ...

[Emily Shi via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 71ef54337d5e83c6767e4816227ef340caa337fc
      https://github.com/llvm/llvm-project/commit/71ef54337d5e83c6767e4816227ef340caa337fc
  Author: Emily Shi <code at emi.sh>
  Date:   2021-03-01 (Mon, 01 Mar 2021)

  Changed paths:
    M compiler-rt/lib/sanitizer_common/sanitizer_mac.cpp

  Log Message:
  -----------
  [darwin] switch blocking mutex from osspinlock to os_unfair_lock

OSSpinLock is deprecated, so we are switching to `os_unfair_lock`. However, `os_unfair_lock` isn't available on older OSs, so we keep `OSSpinLock` as fallback.

Also change runtime assumption check to static since they only ever check constant values.

rdar://69588111

Reviewed By: delcypher, yln

Differential Revision: https://reviews.llvm.org/D97509