[PATCH] D57450: [RISCV] Set MaxAtomicInlineWidth and MaxAtomicPromoteWidth for RV32/RV64 targets with atomics

[James Clarke via Phabricator via cfe-commits]

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

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  https://reviews.llvm.org/D57450/new/

https://reviews.llvm.org/D57450