| commit | 19cf5bffa2cecfd18afc6f74305f72a216bf21ac | [log] [tgz] |
|---|---|---|
| author | Oliver Stannard <oliver.stannard@arm.com> | Tue Feb 06 09:24:47 2018 +0000 |
| committer | Oliver Stannard <oliver.stannard@arm.com> | Tue Feb 06 09:24:47 2018 +0000 |
| tree | 2ca18c6a390879611ea7f1c65369c497cf6e8a6a | |
| parent | ee84001a30d264f1f2acc6f8245b9886a3c0401b [diff] |
[ARM][AArch64] Add CSDB speculation barrier instruction This adds the CSDB instruction, which is a new barrier instruction described by the whitepaper at [1]. This is in encoding space which was previously executed as a NOP, so it is available for all targets that have the relevant NOP encoding space. This matches the binutils behaviour for these instructions [2][3]. [1] https://developer.arm.com/support/security-update [2] https://sourceware.org/ml/binutils/2018-01/msg00116.html [3] https://sourceware.org/ml/binutils/2018-01/msg00120.html git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@324324 91177308-0d34-0410-b5e6-96231b3b80d8