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Jessica Clarke
34cffc25b7
[builtins][AArch64] Implement _sync out-of-line atomics Whilst Clang does not use these, recent GCC does, and so on systems such as FreeBSD that wish to use compiler-rt as the system runtime library but also wish to support building programs with GCC these interfaces are needed. This is a light adaptation of the code committed to GCC by Sebastian Pop <[email protected]>, relicensed with permission for use in compiler-rt. Fixes https://github.com/llvm/llvm-project/issues/63483 Reviewed By: sebpop, MaskRay Differential Revision: https://reviews.llvm.org/D158536 Reviewed by: dim Approved by: re (gjb) MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D41716 (cherry picked from commit8524dc53fd) (cherry picked from commit2f269a3532)