tree 84d22e37b862ac39efbf5c68d2a72705ce8e23a6
parent 4c36031aeabbdd68b6b50d8af45089d2705f0790
author Louis Dionne <ldionne.2@gmail.com> 1634062202 -0400
committer Copybara-Service <copybara-worker@google.com> 1635255330 -0700

[libunwind] Take 2: Use the from-scratch testing configuration by default

Summary:
This commit switches libunwind from using the complicated logic in
libc++'s testing configuration to a from-scratch configuration.
I tried to make sure that all cases that were handled in the old
config were handled by this one too, so hopefully this shouldn't
break anyone. However, if you encounter issues with this change,
please let me know and feel free to revert if I don't reply quickly.

This change was engineered to be easily revertable.

This commit is a re-application of 5a8ad80b6fa5, which was reverted in
070a2ddcb665 because it broke the Bootstrapping build. This has now been
addressed by tweaking the from-scratch config.

Differential Revision: https://reviews.llvm.org/D112082

GitOrigin-RevId: 56b74613bf9168bb79e0088b424ec0b6dd0a66c9