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[clang][AARCH64] Add __ARM_FEATURE_{PAC, BTI}_DEFAULT defines

Authored by tamas.petz on Mar 31 2020, 4:05 AM.



As defined by Arm C Language Extensions (ACLE) these macro defines
should be set to specific values depending on -mbranch-protection.

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tamas.petz created this revision.Mar 31 2020, 4:05 AM
tamas.petz edited reviewers, added: chill; removed: momchil.velikov.Apr 1 2020, 1:27 AM
chill accepted this revision.Apr 1 2020, 2:35 AM

LGTM, conditional on the dependent patch. Thanks!

This revision is now accepted and ready to land.Apr 1 2020, 2:35 AM
This revision was automatically updated to reflect the committed changes.