llvm-project

1c7c8e3a - Revert "[VPlan] Remove trivial dead VPPhi cycles."

Revert "[VPlan] Remove trivial dead VPPhi cycles." This reverts commit 1f17bb133f4f49942a1e0245291811ca3c99a7d2. This seems to be breaking some RISCV bots, reverting for now https://lab.llvm.org/buildbot/#/builders/210/builds/1266