llvm-project

df34eaca - [AArch64] Drop poison flags when lowering absolute difference patterns. (#152130)

[AArch64] Drop poison flags when lowering absolute difference patterns. (#152130) As a follow-up to #151177, when lowering SELECT_CC nodes of absolute difference patterns, drop poison-generating flags from the negated operand to avoid inadvertently propagating poison. As discussed in the PR above, I didn't find practical issues with the current code, but it seems safer to do this preemptively.