[PATCH] D140693: [Driver][RISCV] Adjust the priority between -mcpu, -mtune and -march

[Kito Cheng via Phabricator via cfe-commits]

kito-cheng planned changes to this revision.
kito-cheng added a comment.

- @craig.topper has suggested we could pass all extension with `-` or `+` to neutralize the effect of the `-target-cpu`, that's less intrusive way.
- Add release note to mention the behavior change.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D140693/new/

https://reviews.llvm.org/D140693