[llvm] [RISCV] Support disjoint RISCVISD::OR_VL in combineOp_VLToVWOp_VL (PR #136820)

[Luke Lau via llvm-commits]

lukel97 wrote:

@tclin914 for whatever reason I keep on getting a 500 error from GitHub when I try to add you as a reviewer, no idea what's going on. Adding other reviewers seems to be fine!

https://github.com/llvm/llvm-project/pull/136820