[PATCH] D135948: [LoongArch] Add codegen support for cmpxchg on LA64

[Gong LingQin via Phabricator via llvm-commits]

gonglingqin added a comment.

In D135948#3885111 <https://reviews.llvm.org/D135948#3885111>, @xen0n wrote:

> Wait. I didn't see any processing wrt the **return value** of `cmpxchg`. Would you mind adding some test cases where the `%res` is not optimized out, so we can get to verify the return value behavior is in line with expectations?

Thanks for your advice, I will add test cases.


Repository:
  rG LLVM Github Monorepo

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https://reviews.llvm.org/D135948