jrtc27 added a comment.
Also worth noting that the frontend needs to know the max width otherwise
`warn_atomic_op_misaligned` will be triggered with the message `large atomic
operation may incur significant performance penalty` (name is misleading since
the `%select{large|misaligned}0` means it's triggered for both large and
misaligned atomic ops, and it's also in the `atomic-alignment` group). This is
exactly what I did in my tree (other than the tests) and it seemed to work
correctly for RV64A compiling FreeBSD.
Repository:
rC Clang
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D57450/new/
https://reviews.llvm.org/D57450
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