dtcxzyw wrote:

> Hi @dtcxzyw (or anyone else). If you would like to add a note about this fix 
> in the release notes (completely optional). Please reply to this comment with 
> a one or two sentence description of the fix.

Fixed an incorrect poison-generating flag preservation in InstSimplify. It will 
fix a miscompilation on RISCV, which turns the incorrect `or disjoint` into an 
`add`.

Is that OK?

https://github.com/llvm/llvm-project/pull/88353
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