[llvm-branch-commits] [llvm] [RISCV] Support llvm.readsteadycounter intrinsic (PR #82322)

[Wang Pengcheng via llvm-branch-commits]

wangpc-pp wrote:

Commited as b8ed69ecc01385c03844e8fa05ba418a5670d322.
SPR sometines failed to land after rebasing:
```shell
# spr land --cherry-pick                                                                                                                                                             
d830d43 [RISCV] Support llvm.readsteadycounter intrinsic                                                                                                                                                                      
  #️⃣   Pull Request #82322                                                                                                                                                                                                     
  🛫  Getting started...                                                                                                                                                                                                      
  🛑  GitHub: Validation Failed                                                                                                                                                                                               
      Documentation URL: https://docs.github.com/rest/pulls/pulls#update-a-pull-request                                                                                                                                       
      Errors:                                                                                                                                                                                                                 
      - {"code":"invalid","field":"base","message":"Proposed base branch 'refs/heads/main' is invalid","resource":"PullRequest"} 
```

https://github.com/llvm/llvm-project/pull/82322