tree 2ed2a23e64f762c8cbf95a595b401126f4bcfab6
parent 69d9b84cca8354117b9fe9705a4430d789ee599b
author Luke Cheeseman <luke.cheeseman@arm.com> 1544787012 +0000
committer Luke Cheeseman <luke.cheeseman@arm.com> 1544787012 +0000

[AArch64][libunwind] Unwinding support for return address signing

- Follow up to revision r342895
- gcc would not build libunwind with the earlier patch as the autia1716
  instruction wasn't allowed to be assembled for pre armv8.3a targets
- The autia1716 instruction lives in the hint space encodings so is a valid
  instruction for all armv8a targets
- To work around this I have swapped out the autia1716 instruction for the hint
  instruction

Differential Revision: https://reviews.llvm.org/D55700


git-svn-id: https://llvm.org/svn/llvm-project/libunwind/trunk@349140 91177308-0d34-0410-b5e6-96231b3b80d8