[llvm-branch-commits] [llvm] [RISC-V] Use an optional offset for Xwch instructions (PR #215005)

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ArcaneNibble wrote:

Could you add a test to make sure the no-immediate form actually works? (Yes, I know there currently already wasn't a test for that, but since you're touching it...)

https://github.com/llvm/llvm-project/pull/215005