[llvm-branch-commits] [llvm] release/20.x: [SLP] Check for PHI nodes (potentially cycles!) when checking dependencies (PR #127267)

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dyung wrote:

This change seems to be causing the LLVM test `Transforms/SLPVectorizer/X86/perfect-matched-reused-bv.ll` to fail on two of my release build bots:
- https://lab.llvm.org/buildbot/#/builders/102/builds/118
- https://lab.llvm.org/buildbot/#/builders/74/builds/123

Can someone take a look?

https://github.com/llvm/llvm-project/pull/127267